J/ApJS/239/26 NOFS astrometric measurements for distant WDs (Leggett+, 2018)
Distant white dwarfs in the US Naval Observatory Flagstaff Station parallax
sample.
Leggett S.K., Bergeron P., Subasavage J.P., Dahn C.C., Harris H.C.,
Munn J.A., Ables H.D., Canzian B.J., Guetter H.H., Henden A.H., Levine S.E.,
Luginbuhl C.B., Monet A.B., Monet D.G., Pier J.R., Stone R.C., Vrba F.J.,
Walker R.L., Tilleman T.M., Xu S., Dufour P.
<Astrophys. J. Suppl. Ser., 239, 26 (2018)>
=2018ApJS..239...26L 2018ApJS..239...26L
ADC_Keywords: Positional data; Stars, white dwarf; Photometry, infrared;
Spectra, optical; Stars, masses; Spectral types; Stars, ages;
Parallaxes, trigonometric; Proper motions
Keywords: astrometry ; white dwarfs
Abstract:
This paper presents new trigonometric parallaxes and proper motions
for 214 stars. The measurements were made at the US Naval Observatory
Flagstaff Station between 1989 and 2017, and the average uncertainty
in the parallax values is 0.6mas. We find good agreement with Gaia
Data Release 2 measurements for the stars in common, although there
may be a small systematic offset similar to what has been found by
other investigators. The sample is matched to catalogs and the
literature to create a photometric data set that spans the ultraviolet
to the mid-infrared. New mid-infrared photometry is obtained for 19
stars from archived Spitzer mosaics. New optical spectroscopy is
presented for seven systems and additional spectra were obtained from
the literature. We identify a subsample of 179 white dwarfs (WDs) at
distances of 25-200pc. Their spectral energy distributions (SEDs) are
analyzed using model atmospheres. The models reproduce the entire
flux-calibrated SED very well and provide the atmospheric chemical
composition, temperature, surface gravity, mass, and cooling age of
each WD. Twenty-six WDs are newly classified, and 12 systems are
presented as candidate unresolved binaries. We confirm one WD+red
dwarf system and identify two WDs as candidate dust disk systems.
Twelve old and high-velocity systems are identified as candidate thick
disk or halo objects. The WDs in the sample generally have Galactic
disk-like ages of <8Gyr and masses close to the canonical 0.6M☉.
Description:
Table 1 lists 216 new US Naval Observatory Flagstaff Station (NOFS)
astrometric measurements of 214 stars obtained between 1989 and 2017.
Although the stars in our sample are near the faint limit of DR2 and
predominantly have high proper motion, 90% have Gaia DR2 (I/345)
trigonometric parallaxes. See Section 2.
The entire sample was matched to the optical photometric catalogs
provided by the Sloan Digital Sky Survey (SDSS) Data Release 14 and
the Pan-STARRS1 Data Release 1 (II/349). The sample was also matched
to the near-infrared photometric catalogs provided by the Two Micron
Sky Survey (2MASS, II/246), the Tenth Data Release of the UKIRT
Infrared Deep Sky Survey (UKIDSS), the UKIRT Hemisphere Survey (UHS)
J-Band Data Release, and the Visible and Infrared Survey Telescope for
Astronomy (VISTA) public survey.
Mid-infrared photometry was also obtained for the sample from the
Wide-field Infrared Survey Explorer (WISE) ALLWISE catalog (II/328).
Spitzer Space Telescope Infrared Array Camera (IRAC) photometry was
also included for some stars.
See Section 3.
We obtained spectra of seven white dwarfs (WDs), as well as the red
dwarf companion to one of the WDs. Spectra covering 490-820nm were
obtained at the Gemini North and South Observatories using the GMOS
instruments. The data were obtained using Gemini's Fast Turnaround
program, via programs GN-2018A-FT-209 and GS-2018A-FT-206.
See Section 4.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 166 216 NOFS astrometric results
table2.dat 148 214 Optical and near-infrared photometry
table3.dat 98 19 New Spitzer photometry
table4.dat 98 8 New optical spectroscopy
table7.dat 74 13 Reddening correction for distant white dwarfs
table8.dat 78 179 White dwarf spectral classification
table9.dat 46 26 Reclassified white dwarfs
table11.dat 111 108 Properties of WDs with Hydrogen-rich atmospheres
table12.dat 111 24 Properties of WDs with Helium-rich atmospheres
table13.dat 111 24 Properties of WDs with metal-rich atmospheres
table14.dat 111 10 Properties of cool WDs with mixed Hydrogen and
Helium atmospheres
table15.dat 111 13 Properties of WDs with unconstrained composition
atmospheres
table16.dat 47 12 Candidate unresolved white dwarf binaries
table17.dat 56 12 Candidate halo white dwarfs
table18.dat 92 16 Ages of resolved double degenerate binaries
table19.dat 149 196 Gaia astrometry and photometry
table20.dat 76 134 SDSS photometry, AB magnitudes
table21.dat 51 148 2MASS photometry 2MASS system, Vega magnitudes
table22.dat 83 66 UKIDSS photometry MKO system, Vega magnitudes
table23.dat 82 23 VISTA photometry VISTA system, Vega magnitudes
table24.dat 24 102 UKIRT hemisphere survey MKO system, Vega magnitudes
table25.dat 117 176 WISE and Spitzer photometry, Vega magnitudes
--------------------------------------------------------------------------------
See also:
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/289 : UCAC2 Catalogue (Zacharias+ 2004)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1 (McMahon+, 2013)
II/328 : AllWISE Data Release (Cutri+ 2013)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)
II/343 : VIKING catalogue data release 2 (Edge+, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/PASP/109/849 : Probing the LHS Catalog (Gizis+ 1997)
J/ApJS/133/413 : BVRIJHK photometry of cool white dwarfs (Bergeron+, 2001)
J/ApJ/586/1356 : White dwarfs with cool companions (Wachter+, 2003)
J/ApJS/156/47 : DA WDs from the Palomar Green Survey (Liebert+, 2005)
J/PASP/117/676 : LHS faint proper-motion stars (Reid+, 2005)
J/ApJS/167/40 : SDSS4 confirmed white dwarfs catalog (Eisenstein+, 2006)
J/AJ/132/1221 : VJHK and SDSS photometry of DA white dwarfs (Holberg+, 2006)
J/MNRAS/373/781 : JHK photometry of faint standard stars (Leggett+, 2006)
J/ApJ/663/1291 : DZ stars in SDSS DR4 (Dufour+, 2007)
J/AJ/134/26 : Binaries with white dwarf in 2MASS (Hoard+, 2007)
J/AJ/134/252 : New nearby white dwarf systems (Subasavage+, 2007)
J/ApJS/190/77 : Detailed analysis of cool WDs in the SDSS (Kilic+, 2010)
J/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)
J/ApJS/197/38 : The WIRED survey. II. (Debes+, 2011)
J/ApJ/743/138 : Spectroscopic survey of bright WDs (Gianninas+, 2011)
J/MNRAS/417/1210 : DA-white dwarfs from SDSS and UKIDSS (Girven+, 2011)
J/ApJS/197/19 : First brown dwarfs discovered by WISE (Kirkpatrick+, 2011)
J/ApJ/760/26 : DA white dwarfs infrared photometry (Barber+, 2012)
J/ApJS/201/19 : Hawaii Infrared Parallax Program. I. (Dupuy+, 2012)
J/MNRAS/425/1394 : High proper-motion white dwarfs (Kawka+, 2012)
J/A+A/557/A19 : Mass and age of extreme low-mass WDs (Althaus+, 2013)
J/ApJ/815/63 : SDSS wide double white dwarfs spectroscopy (Andrews+, 2015)
J/MNRAS/449/3966 : Ultracool white dwarfs (Gianninas+, 2015)
J/ApJS/219/19 : Census of nearby WDs from SUPERBLINK (Limoges+, 2015)
J/MNRAS/459/1415 : Bright white dwarfs IRAC photometry (Barber+, 2016)
J/AJ/154/147 : Astrometry for late-type dwarfs & subdwarfs (Dahn+, 2017)
J/AJ/154/32 : Solar neighborhood. XXXIX. Nearby WDs (Subasavage+, 2017)
http://montrealwhitedwarfdatabase.org/ : Montreal WD database (MWDD)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 24 A24 --- Simbad Simbad recognized name
26- 36 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
38- 38 A1 --- f_Name Object flags (1)
40- 41 I2 h RAh Hour of Right Ascension (J2000)
43- 44 I2 min RAm Minute of Right Ascension (J2000)
46- 50 F5.2 s RAs Second of Right Ascension (J2000)
52- 52 A1 --- DE- Sign of the Declination (J2000)
53- 54 I2 deg DEd Degree of Declination (J2000)
56- 57 I2 arcmin DEm Arcminute of Declination (J2000)
59- 62 F4.1 arcsec DEs Arcsecond of Declination (J2000)
64- 67 A4 --- Filt Filter (2)
69- 71 I3 --- Nngt [10/276] Number of nights the PI star was
observed
73- 75 I3 --- Nfrm [10/491] Total number of frames in the
astrometric reduction
77- 83 F7.2 yr Year0 [1989.6/2013.5] Starting fractional year
of coverage of the parallax data
85- 91 F7.2 yr Year1 [1994.7/2018] Ending fractional year of
coverage of the parallax data
93- 97 F5.2 yr Nyr [3/11.1] Total coverage in years
99-100 I2 --- Nref [4/50] Number of reference stars
102-106 F5.2 mas Rplx [-3.3/39] Relative trigonometric parallax
108-111 F4.2 mas e_Rplx [0.2/1.7] Uncertainty in Rplx
113-116 F4.2 mas pcorr [0.29/2.1]? Parallax correction
118-121 F4.2 mas e_pcorr [0.03/0.6]? Uncertainty in pcorr
123-127 F5.2 mas Aplx [-1.5/39.6]? Absolute trigonometric parallax
129-132 F4.2 mas e_Aplx [0.2/1.7]? Uncertainty in Aplx
134-139 F6.1 mas/yr mu [8/1782.2] Relative total proper motion (3)
141-143 F3.1 mas/yr e_mu [0/0.7] Uncertainty in mu
145-149 F5.1 deg PA-mu [2.4/345] Position Angle of mu (3)
151-153 F3.1 deg e_PA-mu [0/2.5] Uncertainty in PA
155-160 F6.1 km/s Vtan [11.3/1190.2]? Implied tangential velocity
162-166 A5 --- CCD Camera CCD (4)
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = WD 1923+550 has a common proper motion red dwarf companion 9"
away at a position angle of 70 degrees --- 2MASS J19240858+5506524. The
companion is 5.8 magnitudes fainter in the Pan-STARRS1 r-band, too faint
for reliable NOFS astrometric measurements. Note that Simbad confuses
the two sources.
b = WD 2058+342B is very close to another star in the Pan-STARRS1
and UHS images and the catalog photometry is compromised; the photometry
was determined here from downloaded survey images.
Note (2): Filter as follows:
A2-1 = Optically flat interference filter centered near 698nm with a
FWHM of 172nm;
I-2 = Optically flat interference filter centered near 810nm with a
FWHM of 191nm;
ST-R = Described in detail by Monet et al. 1992 (Cat. J/AJ/103/638) and
is centered near 700nm with a FWHM of 250nm. Also known as STWIDER.
Note (3): Relative total proper motions are presented to 0.1mas/yr and the
position angle of total motion to 0.1deg. They are not corrected for
solar motion.
Note (4): Camera CCD as follows:
EEV24 = English Electric Valve 2048*4096 (EEV24) CCD;
TI800 = Texas Instruments 800*800 (TI800) CCD;
Tek2K = Tektronics 2048*2048 (Tek2K) CCD.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
14- 14 A1 --- f_Name Object flags (1)
16- 21 F6.3 mag umag [13.1/23]? SDSS u-band AB magnitude
23- 27 F5.3 mag e_umag [0.007/0.41]? Uncertainty in umag
29- 34 F6.3 mag gmag [12.7/20.3] Pan-STARRS g-band AB magnitude (2)
36- 41 F6.3 mag e_gmag [0.001/0.07]?=-9.999 Uncertainty in gmag
43- 48 F6.3 mag rmag [12.3/19.4] Pan-STARRS r-band AB magnitude (2)
50- 55 F6.3 mag e_rmag [0.001/0.03]?=-9.999 Uncertainty in rmag
57- 62 F6.3 mag imag [12.1/19.6] Pan-STARRS i-band AB magnitude (2)
64- 69 F6.3 mag e_imag [0.001/0.06]?=-9.999 Uncertainty in imag
71- 76 F6.3 mag zmag [12/20.1] Pan-STARRS z-band AB magnitude (2)
78- 83 F6.3 mag e_zmag [0.001/0.05]?=-9.999 Uncertainty in zmag
85- 90 F6.3 mag ymag [11.3/20]? Pan-STARRS y-band AB magnitude (2)
92- 96 F5.3 mag e_ymag [0.001/0.2]? Uncertainty in ymag
98-103 F6.3 mag Ymag [12.2/20]? MKO Y-band Vega magnitude (2)
105-109 F5.3 mag e_Ymag [0.001/0.06]? Uncertainty in Ymag
111-116 F6.3 mag Jmag [10.1/20.5]? MKO J-band Vega magnitude (2)
118-122 F5.3 mag e_Jmag [0.001/0.2]? Uncertainty in Jmag
124-129 F6.3 mag Hmag [9.5/20.8]? MKO H-band Vega magnitude (2)
131-135 F5.3 mag e_Hmag [0.001/0.3]? Uncertainty in Hmag
137-142 F6.3 mag Kmag [9.3/21]? MKO K-band Vega magnitude (2)
144-148 F5.3 mag e_Kmag [0.001/0.4]? Uncertainty in Kmag
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = WD 1923+550 has a common proper motion red dwarf companion 9"
away at a position angle of 70 degrees --- 2MASS J19240858+5506524. The
companion is 5.8 magnitudes fainter in the Pan-STARRS1 r-band, too faint
for reliable NOFS astrometric measurements. Note that Simbad confuses
the two sources.
b = WD 2058+342B is very close to another star in the Pan-STARRS1
and UHS images and the catalog photometry is compromised; the photometry
was determined here from downloaded survey images.
Note (2): Magnitudes are Pan-STARRS MeanPSFMag, and UKIDSS and VISTA apermag3.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
14- 14 A1 --- f_Name Object flags (1)
16- 32 A17 --- AOR AOR Number(s)
34- 42 A9 --- PI Principal Investigator
44- 51 F8.2 uJy F3.6um [12.5/16302]? Spitzer/IRAC 3.6um band photometry
53- 57 F5.2 uJy e_F3.6um [0.14/43]? Uncertainty in 3.6mag (2)
59- 66 F8.2 uJy F4.5um [9.7/10828]? Spitzer/IRAC 4.5um band photometry
68- 71 F4.2 uJy e_F4.5um [0.11/6]? Uncertainty in 4.5mag (2)
73- 79 F7.2 uJy F5.8um [70.8/9380]? Spitzer/IRAC 5.8um band photometry
81- 84 F4.2 uJy e_F5.8um [1/10]? Uncertainty in 5.8mag (2)
86- 92 F7.2 uJy F8.0um [21.8/4649]? Spitzer/IRAC 8.0um band photometry
94- 98 F5.2 uJy e_F8.0um [1.3/14]? Uncertainty in 8.0mag (2)
--------------------------------------------------------------------------------
Note (1): Individual photometry flags as follows:
a = [3.6], [4.5] and [5.8] fluxes determined here are brighter than
published by Farihi+ (2008ApJ...674..431F 2008ApJ...674..431F);
b = [8.0] flux determined here is fainter than published by
Mullally+ (2007ApJS..171..206M 2007ApJS..171..206M);
c = [3.6] and [4.5] fluxes determined here are fainter than published by
Barber+ (2016, J/MNRAS/459/1415);
Note (2): The absolute flux calibration uncertainty of 2%
(Reach+ 2005PASP..117..978R 2005PASP..117..978R) is not included in the given errors.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11- 11 A1 --- f_Name Object flag (1)
13- 14 I2 h RAh [6/19] Hour of Right Ascension (J2000)
at Ep=2018.3
16- 17 I2 min RAm Minute of Right Ascension (J2000) at Ep=2018.3
19- 23 F5.2 s RAs Second of Right Ascension (J2000) at Ep=2018.3
25- 25 A1 --- DE- Sign of the Declination (J2000) at Ep=2018.3
26- 27 I2 deg DEd Degree of Declination (J2000) at Ep=2018.3
29- 30 I2 arcmin DEm Arcminute of Declination (J2000) at Ep=2018.3
32- 35 F4.1 arcsec DEs Arcsecond of Declination (J2000) at Ep=2018.3
37- 42 A6 --- Inst Instrument
44- 53 A10 "Y/M/D" Date2 Second observation date if any
54 A1 --- --- [,]
56- 65 A10 "Y/M/D" Date Observation date
67- 68 I2 min Exp [16/36] Exposure time
70- 92 A23 --- SpT-S Simbad Spectral Type
94- 94 A1 --- f_SpT-S Spectral Type flag (1)
96- 98 A3 --- SpT-N Newly derived spectral type
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = 0918-172 and LP 787-25 form a binary system with separation 13".
b = Typed by comparison to SDSS spectral templates (Bochanski et al.
2007AJ....133..531B 2007AJ....133..531B);
c = Simbad gives the spectral type for the red dwarf companion
determined by Kirkpatrick et al. (2010ApJS..190..100K 2010ApJS..190..100K).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name WD Number (HHMM+DDd) or Name used in paper
10- 19 A10 --- SpT Spectral Type
21- 23 I3 pc Dist [108/236] Distance
25- 29 F5.1 deg GLAT [-69.8/74] Galactic latitude
31- 35 I5 K Teff [8068/27942] Surface effective temperature
37- 41 F5.3 Msun Mass [0.42/1.2] Mass
43- 47 F5.3 [cm/s2] logg [7.7/9.1] log of surface gravity
49- 52 I4 Myr Age [13/1277] Cooling age
54- 57 I4 K DTeff [19/7540] Corrected - Uncorrected, Teff
59- 63 F5.3 [cm/s2] Dlogg [0.002/0.3] Corrected - Uncorrected, logg
65- 69 F5.3 Msun DMass [0.001/0.2] Corrected - Uncorrected, mass
71- 74 I4 Myr DAge [-64/-1] Corrected - Uncorrected, Cooling age
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11- 30 A20 --- OName Other name
32- 43 A12 --- SpT-S Spectral Type, Simbad
45- 54 A10 --- SpT-A Spectral Type, Adopted
56- 56 A1 --- flag Source flag (1)
58- 78 A21 --- Comp Composition
--------------------------------------------------------------------------------
Note (1): Flags on source spectral types and compositions as follows:
a = Hydrogen is a trace element in these WDs, Rolland et al.
(2018ApJ...857...56R 2018ApJ...857...56R);
b = See Dufour (2011wdac.book...53D 2011wdac.book...53D) for a description of the different
types of DQ stars;
c = These WDs are polarized, i.e. magnetic which would otherwise be
indicated by the letter "H".
d = 0239+167: classified DQ by Kawka & Vennes (2012, J/MNRAS/425/1394), no
spectrum available, will be analyzed in future paper.
e = The DZ model atmospheres include trace H as well as Ca, and in all
cases N(H)/N(He)=10^-5.0.
f = 0714+458: Classified as a DQ by
Weidemann & Koester (1995A&A...297..216W 1995A&A...297..216W), the SED is well reproduced
by a pure-He atmosphere although C will be a trace element.
g = Proposed oxygen-rich classification is DS, K. Williams private
communication 2018.
h = 1704+481A,B: A triple system made up of a close pair of WDs and a
distant WD; the unresolved pair are both low-mass WDs
(Andrews+ 2015, J/ApJ/815/63 and Maxted+ 2000MNRAS.314..334M 2000MNRAS.314..334M).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table9.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11- 25 A15 --- OName Other Name
27- 38 A12 --- SpT-S Spectral Type, Simbad
40- 46 A7 --- SpT-A Spectral Type, Adopted
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1[1-5].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11 A1 --- f_Name a=Analysis postponed to future work
13- 22 A10 --- SpT Spectral Type
24- 28 F5.2 mas plx [4.2/39.3] Parallax
30- 33 F4.2 mas e_plx [0.16/1.7] Uncertainty in plx
35- 35 A1 --- f_plx Parallax flag; a=Relative parallax, absolute
parallax will be larger
37- 41 I5 K Teff [2772/40814]? Surface effective temperature
43- 47 I5 K e_Teff [12/12333]? Uncertainty in Teff
49- 53 F5.3 Msun Mass [0.1/1.4]? Derived Mass
55- 59 F5.3 Msun e_Mass [0.009/0.3]? Uncertainty in Mass
61- 65 F5.3 [cm/s2] logg [6.8/9.4]? log of surface gravity
67- 71 F5.3 [cm/s2] e_logg [0.01/0.3]? Uncertainty in logg
73- 76 I4 Myr Age [12/9200]? Cooling Age
78- 81 I4 Myr E_Age [2/1079]? Upper uncertainty in Age
83- 86 I4 Myr e_Age [3/1286]? Lower uncertainty in Age
88- 92 I5 Myr TAge [115/44801]? Total Age
94- 99 I6 Myr E_TAge [7/145471]? Upper uncertainty in TAge
101-105 I5 Myr e_TAge [3/33273]? Lower uncertainty in TAge
107-111 F5.1 km/s Vtan [11.3/469] Implied tangential velocity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1[67].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11- 29 A19 --- OName Other Name
31- 37 A7 --- SpT Spectral Type
39- 42 F4.2 Msun Mass [0.13/0.65] Mass, assuming a single white dwarf
44- 47 F4.2 Msun e_Mass [0.01/0.05]? Uncertainty in Mass
(only for Table 16)
49- 52 F4.1 Gyr Age [1.4/10.4]? Lower Age Limit (only for Table 17)
54- 56 I3 km/s Vtan [144/401]? Implied tangential velocity
(only for Table 17)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table18.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11- 31 A21 --- Comp Composition
33- 37 I5 K Teff [3009/19285] Surface effective temperature
39- 42 I4 K e_Teff [27/1872] Uncertainty in Teff
44- 47 F4.2 Msun Mass [0.13/0.78] Derived Mass, solar units
49- 52 F4.2 Msun e_Mass [0.02/0.05] Uncertainty in Mass
54- 56 F3.1 Msun IMass [1.0/3.4]? Initial Mass, solar units
58- 60 F3.1 Msun e_IMass [0.5/0.8]? Uncertainty in IMass
62- 65 F4.2 Gyr Age [0.06/7.59] Cooling Age
67- 70 F4.2 Gyr e_Age [0.03/0.66] Upper uncertainty in Age
72- 75 F4.1 Gyr TAge [2.1/15.1]? Total Age
77- 81 F5.1 Gyr E_TAge [0.3/65.0]? Upper uncertainty in TAge
83- 87 F5.2 Gyr e_TAge [0.27/6.9]? Lower uncertainty in TAge
89- 92 F4.1 km/s Vtan [22.5/81.7] Implied tangential velocity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table19.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
14- 16 A3 --- f_Name Object flag(s) (1)
18- 31 F14.10 deg RAdeg Barycentric right ascension (ICRS) at Ep=2015.5
33- 37 F5.3 mas e_RAdeg [0.016/0.6] Uncertainty in RAdeg
39- 52 F14.10 deg DEdeg [-22/84] Barycentric declination (ICRS)
at Ep=2015.5
54- 58 F5.3 mas e_DEdeg [0.017/0.6] Uncertainty in RAdeg
60- 65 F6.3 mas Plx [5/40] Absolute stellar parallax
67- 71 F5.3 mas e_Plx [0.018/0.7] Standard error of parallax
73- 81 F9.3 mas/yr pmRA [-1093/1027] Proper motion, right ascension,
pmRA*cosDE
83- 87 F5.3 mas/yr e_pmRA [0.03/0.9] Standard error pmRA
89- 97 F9.3 mas/yr pmDE [-1755/582] Proper motion in declination
direction
99-103 F5.3 mas/yr e_pmDE [0.03/1.4] Standard error of pmDE
105-114 F10.6 --- gofAL [-1.6/151] Goodness of fit statistic of model
wrt along-scan observations
116-123 F8.6 mas epsi [0.02/2.1]?=0 Excess noise of the source
125-134 F10.6 --- sepsi [0.0006/957]?=0 Significance of excess noise
136-142 F7.4 mag Gmag [12.7/19.4] G-band mean magnitude, Vega
144-149 F6.4 mag e_Gmag [0.0003/0.06] Standard error of Gmag
--------------------------------------------------------------------------------
Note (1): Object flags as follows:
a = NOFS and Gaia parallax values differ by more than 2σ;
b = The Gaia astrometric fit may be poor as indicated by a goodness of
fit statistic >3 or the significance of excess noise being >2;
http://www.cosmos.esa.int/archive/documentation/GDR2/index.html
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table20.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
13- 18 F6.3 mag umag [13.1/23] SDSS u-band AB magnitude
20- 24 F5.3 mag e_umag [0.007/0.4] Uncertainty in umag
26- 31 F6.3 mag gmag [12.8/20.4] SDSS g-band AB magnitude
33- 37 F5.3 mag e_gmag [0.001/0.08] Uncertainty in gmag
39- 44 F6.3 mag rmag [13.1/19.4] SDSS r-band AB magnitude
46- 50 F5.3 mag e_rmag [0.001/0.4] Uncertainty in rmag
52- 57 F6.3 mag imag [13.3/19.6] SDSS i-band AB magnitude
59- 63 F5.3 mag e_imag [0.001/0.2] Uncertainty in imag
65- 70 F6.3 mag zmag [13.5/20.1] SDSS z-band AB magnitude
72- 76 F5.3 mag e_zmag [0.01/0.5] Uncertainty in zmag
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table21.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
14- 19 F6.3 mag Jmag [10.1/17] 2MASS J-band Vega magnitude
21- 25 F5.3 mag e_Jmag [0.016/0.17] Uncertainty in Jmag
27- 32 F6.3 mag Hmag [9.5/16.7]? 2MASS H-band Vega magnitude
34- 38 F5.3 mag e_Hmag [0.017/0.3]? Uncertainty in Hmag
40- 45 F6.3 mag Ksmag [9.3/16.2]? 2MASS Ks-band Vega magnitude
47- 51 F5.3 mag e_Ksmag [0.002/0.3]? Uncertainty in Ksmag
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table22.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
14- 19 F6.3 mag Zmag [17.3/17.4]? UKIDSS MKO Z-band Vega magnitude (1)
21- 25 F5.3 mag e_Zmag [0.015]? Uncertainty in Zmag
27- 32 F6.3 mag Ymag [12.2/20]? UKIDSS MKO Y-band Vega magnitude (1)
34- 38 F5.3 mag e_Ymag [0.001/0.07]? Uncertainty in Ymag
40- 45 F6.3 mag Jmag [12/18.5]? UKIDSS MKO J-band Vega magnitude (1)
47- 51 F5.3 mag e_Jmag [0.001/0.1]? Uncertainty in Jmag
53- 58 F6.3 mag Hmag [11.4/18.4]? UKIDSS MKO H-band Vega magnitude (1)
60- 64 F5.3 mag e_Hmag [0.001/0.2]? Uncertainty in Hmag
66- 71 F6.3 mag Kmag [10.9/19]? UKIDSS MKO K-band Vega magnitude (1)
73- 77 F5.3 mag e_Kmag [0.001/0.4]? Uncertainty in Kmag
79- 83 A5 --- Survey Survey (2)
--------------------------------------------------------------------------------
Note (1): apermag3 values are given as appropriate for point sources.
Note (2): Survey as follows:
DXS10 = Deep eXtragalactic Survey (see II/319/dxs9);
GCS10 = Galactic Clusters Survey (see II/319/gcs9);
GPS10 = Galactic Plane Survey (see II/316/gps6);
LAS10 = Large Area Survey (see II/319/las9).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table23.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name WD Number (HHMM+DDd) or Name used in paper
11- 16 F6.3 mag Zmag [15.7/19.6]? VISTA Z-band Vega magnitude (1)
18- 22 F5.3 mag e_Zmag [0.002/0.03]? Uncertainty in Zmag
24- 29 F6.3 mag Ymag [14.8/19.9]? VISTA Y-band Vega magnitude (1)
31- 35 F5.3 mag e_Ymag [0.003/0.07]? Uncertainty in Ymag
37- 42 F6.3 mag Jmag [12.5/20.4]? VISTA J-band Vega magnitude (1)
44- 48 F5.3 mag e_Jmag [0.001/0.09]? Uncertainty in Jmag
50- 55 F6.3 mag Hmag [12/17.8]? VISTA H-band Vega magnitude (1)
57- 61 F5.3 mag e_Hmag [0.001/0.1]? Uncertainty in Hmag
63- 68 F6.3 mag Kmag [11.5/18.6]? VISTA K-band Vega magnitude (1)
70- 74 F5.3 mag e_Kmag [0.001/0.3]? Uncertainty in Kmag
76- 82 A7 --- Survey Survey (2)
--------------------------------------------------------------------------------
Note (1): apermag3 values are given as appropriate for point sources.
Note (2): Survey as follows:
VHS5 = VISTA Hemisphere Survey (see II/359);
VIKING4 = VISTA Kilo-degree Infrared Galaxy survey (see II/343).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table24.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
13- 18 F6.3 mag Jmag [11.3/19.6] UKIDSS MKO J-band Vega magnitude (1)
20- 24 F5.3 mag e_Jmag [0.001/0.3] Uncertainty in Jmag
--------------------------------------------------------------------------------
Note (1): apermag3 values are given as appropriate for point sources.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table25.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Name WD Number (HHMM+DDd) or Name used in paper
14- 14 A1 --- f_Name Object flags (1)
16- 21 F6.3 mag W1mag [9.15/17.9]? WISE 3.4um (Band 1) Vega magnitude
23- 27 F5.3 mag e_W1mag [0.02/0.5]? Uncertainty in W1mag
29- 34 F6.3 mag W2mag [9/17.7]? WISE 4.6um (Band 2) Vega magnitude
36- 40 F5.3 mag e_W2mag [0.019/0.5]? Uncertainty in W2mag
42- 47 F6.3 mag W3mag [8.9/13]? WISE 12um (Band 3) Vega magnitude
49- 53 F5.3 mag e_W3mag [0.02/0.5]? Uncertainty in W3mag
55- 59 F5.3 mag W4mag [7.9/8.8]? WISE 22um (Band 4) Vega magnitude
61- 65 F5.3 mag e_W4mag [0.12/0.5]? Uncertainty in W4mag
67- 72 F6.3 mag 3.6mag [10.5/19.1]? Spitzer/IRAC 3.6um (band 1)
Vega magnitude
74- 78 F5.3 mag e_3.6mag [0.001/0.3]? Uncertainty in 3.6mag
80- 85 F6.3 mag 4.5mag [10.5/18.8]? Spitzer/IRAC 4.5um (band 2)
Vega magnitude
87- 91 F5.3 mag e_4.5mag [0.001/0.5]? Uncertainty in 4.5mag
93- 98 F6.3 mag 5.8mag [10.2/17.9]? Spitzer/IRAC 5.8um (band 3)
Vega magnitude
100-104 F5.3 mag e_5.8mag [0.001/0.6]? Uncertainty in 5.8mag
106-111 F6.3 mag 8.0mag [10.3/16.9]? Spitzer/IRAC 8um (band 4)
Vega magnitude
113-117 F5.3 mag e_8.0mag [0.001/0.9]? Uncertainty in 8.0mag
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = The mid-infrared flux emerging from 0956-017 is variable,
Xu & Jura (2012ApJ...745...88X 2012ApJ...745...88X).
b = "GD 74" was a misprint for GD 274; corrected at CDS.
--------------------------------------------------------------------------------
Acknowledgements:
Pierre Bergeron [pierre.bergeron.1 at umontreal.ca]
History:
From electronic version of the journal
* 13-Aug-2021: 1148+544 and LP129-586 were inverted in Table 19.
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 05-Jan-2021