J/ApJS/240/19 Parallaxes of late-T and Y dwarfs (Kirkpatrick+, 2019)
Preliminary trigonometric parallaxes of 184 late-T and Y dwarfs and an analysis
of the field substellar mass function into the "planetary" mass regime.
Kirkpatrick J.D., Martin E.C., Smart R.L., Cayago A.J., Beichman C.A.,
Marocco F., Gelino C.R., Faherty J.K., Cushing M.C., Schneider A.C.,
Mace G.N., Tinney C.G., Wright E.L., Lowrance P.J., Ingalls J.G., Vrba F.J.,
Munn J.A., Dahm S.E., McLean I.S.
<Astrophys. J. Suppl. Ser., 240, 19 (2019)>
=2019ApJS..240...19K 2019ApJS..240...19K
ADC_Keywords: Stars, brown dwarf; Parallaxes, trigonometric; Proper motions;
Spectral types; Magnitudes, absolute; Infrared;
Effective temperatures; Stars, T-type; Stars, Y-type
Keywords: brown dwarfs ; parallaxes ; solar neighborhood ; stars: distances ;
stars: luminosity function, mass function
Abstract:
We present preliminary trigonometric parallaxes of 184 late-T and Y
dwarfs using observations from Spitzer (143), the U.S. Naval
Observatory (18), the New Technology Telescope (14), and the United
Kingdom Infrared Telescope (9). To complete the 20pc census of ≥T6
dwarfs, we combine these measurements with previously published
trigonometric parallaxes for an additional 44 objects and
spectrophotometric distance estimates for another 7. For these 235
objects, we estimate temperatures, sift into five 150K wide Teff
bins covering the range 300-1050K, determine the completeness limit
for each, and compute space densities. To anchor the high-mass end of
the brown dwarf mass spectrum, we compile a list of early- to mid-L
dwarfs within 20pc. We run simulations using various functional forms
of the mass function passed through two different sets of evolutionary
code to compute predicted distributions in Teff. The best fit of
these predictions to our L, T, and Y observations is a simple
power-law model with α∼0.6 (where dN/dM∝M-α),
meaning that the slope of the field substellar mass function is in
rough agreement with that found for brown dwarfs in nearby
star-forming regions and young clusters. Furthermore, we find that
published versions of the log-normal form do not predict the steady
rise seen in the space densities from 1050 to 350K. We also find that
the low-mass cutoff to formation, if one exists, is lower than
∼5MJup, which corroborates findings in young, nearby moving groups
and implies that extremely low-mass objects have been forming over the
lifetime of the Milky Way.
Description:
A list of 142 objects from Table 1 was astrometrically monitored with
Spitzer/IRAC (spanning 2010 Jul 10 to 2017 Oct 20). Most of the
Spitzer data came from programs 70062, 80109, 90007, 11059, and 13012
(Kirkpatrick, PI). See Section 4 and Table 4.
A number of early WISE discoveries from Table 1 were astrometrically
monitored at the U.S. Naval Observatory (USNO) in Flagstaff. These
objects were measured on the 1.55m Strand Astrometric Reflector using
the ASTROCAM infrared imager. See Section 6 and Table 5.
Twenty-three additional late-T dwarfs were monitored astrometrically
at either the 3.5m NTT or the 3.8m UKIRT; one of these objects was
observed at both facilities. See Section 7 and Table 6.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 134 239 Dwarfs with type ≥T6 and distance or
distance estimate ≤20pc
table2.dat 117 236 *Photometry of objects from Table 1
table3.dat 95 142 Objects on the IRAC ch2 (4.5um) Spitzer Parallax
Program
table4.dat 115 142 Parallax and motion fits for objects on
the Spitzer Parallax Program
table5.dat 62 18 *Parallax and motion fits for objects on
the USNO Parallax Program
table6.dat 102 24 Parallax and motion fits for objects on
the NTT and UKIRT Parallax Programs
table7.dat 137 228 Summary of spectral types, parallaxes, proper motions,
absolute magnitudes, and tangential velocities
table10.dat 77 92 Effective temperature determinations for objects
from Table 7
table11.dat 92 198 Effective temperature determinations for the 20pc
census of T6 and later dwarfs
table13.dat 138 91 The 20pc census of L0 to L5.5 dwarfs
refs.dat 102 220 References
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Note on table2.dat: For resolved photometry of binaries, see Table 5
of Leggett+ (2015ApJ...799...37L 2015ApJ...799...37L).
Note on table5.dat: All results were obtained through a J-band filter.
--------------------------------------------------------------------------------
See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
II/328 : AllWISE Data Release (Cutri+ 2013)
II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1 (McMahon+, 2013)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
II/365 : The CatWISE2020 catalog (Eisenhardt+, 2020)
J/ApJ/564/421 : Spectra of T dwarfs. I. (Burgasser+, 2002)
J/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002)
J/AJ/126/1526 : IR photometry of ultracool dwarfs (Bouy+, 2003)
J/AJ/126/2487 : T dwarfs in the southern hemisphere (Burgasser+, 2003)
J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)
J/AJ/125/3302 : HST binary very low mass stars & brown dwarfs (Gizis+, 2003)
J/AJ/127/2856 : Brown dwarfs in the 2MASS Survey (Burgasser+, 2004)
J/AJ/127/3553 : JHK phot. and spectroscopy for L and T dwarfs (Knapp+, 2004)
J/A+A/435/363 : Southern Infrared Proper Motion Survey (Deacon+, 2005)
J/other/ARA+A/43.195 : L and T dwarf stars (Kirkpatrick, 2005)
J/ApJ/637/1067 : NIR spectral classification of T dwarfs (Burgasser+, 2006)
J/AJ/131/2722 : New L and T dwarfs from the SDSS (Chiu+, 2006)
J/AJ/132/891 : Binaries among nearby L dwarfs (Reid+, 2006)
J/AJ/133/439 : Luminosity function of M7-L8 ultracool dwarfs (Cruz+, 2007)
J/AJ/134/1162 : 11 new T dwarfs in 2MASS (Looper+, 2007)
J/AJ/133/2258 : Activity and kinematics of ultracool dwarfs (Schmidt+, 2007)
J/ApJ/689/1295 : Lithium test implications for BDs (Kirkpatrick+, 2008)
J/MNRAS/383/831 : New DENIS nearby L and late-M dwarfs (Phan-Bao+, 2008)
J/AJ/136/1290 : Ultracool dwarfs from the 2MASS (Reid+, 2008)
J/AJ/135/785 : SDSS-DR5 low-mass star spectroscopic sample (West+, 2008)
J/AJ/137/1 : PMs and astrometry of late-type dwarfs (Faherty+, 2009)
J/ApJ/710/1142 : SpeX spectrosc. of low mass binaries. I. (Burgasser+, 2010)
J/A+A/510/A99 : Epsilon Indi Ba and Bb IR spectra (King+, 2010)
J/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)
J/ApJ/710/1627 : Mid-IR photometry of cold brown dwarfs (Leggett+, 2010)
J/AJ/139/1808 : Colors and kinematics of SDSS L dwarfs (Schmidt+, 2010)
J/ApJS/197/19 : First brown dwarfs discovered by WISE (Kirkpatrick+, 2011)
J/ApJS/201/19 : Hawaii Infrared Parallax Program. I. (Dupuy+, 2012)
J/ApJ/752/56 : BDKP. III. Plx for 70 ultracool dwarfs (Faherty+, 2012)
J/MNRAS/427/3280 : Ultra-cool dwarfs at low Galactic latitudes (Folkes+, 2012)
J/ApJ/753/156 : T/Y brown dwarfs with WISE photometry (Kirkpatrick+, 2012)
J/MNRAS/433/457 : 76 T dwarfs from the UKIDSS LAS (Burningham+, 2013)
J/ApJS/205/6 : T dwarf population revealed by WISE (Mace+, 2013)
J/PASP/125/809 : New nearby M, L, and T dwarfs (Thompson+, 2013)
J/ApJ/794/143 : New SpeX Observations of M7-L6 Dwarfs (Bardalez+, 2014)
J/AJ/147/94 : Solar neighborhood. XXXII. L and M dwarfs (Dieterich+, 2014)
J/ApJ/783/122 : AllWISE motion survey (Kirkpatrick+, 2014)
J/ApJ/781/4 : Photometry of high PM objects from WISE (Luhman, 2014)
J/ApJ/787/126 : WISE reduced PMs and spectral types (Luhman+, 2014)
J/AJ/147/34 : SpeX library of L-type dwarfs (Schneider+, 2014)
J/ApJ/810/158 : M,L,T dwarfs fundamental param. and SEDs (Filippazzo+, 2015)
J/ApJS/219/33 : BANYAN. VII. Candidate YMG members from BASS (Gagne+, 2015)
J/ApJS/225/10 : Kinematic analysis of M7-L8 dwarfs (Faherty+, 2016)
J/ApJS/224/36 : The AllWISE motion survey (AllWISE2) (Kirkpatrick+, 2016)
J/ApJ/817/112 : NEOWISE/AllWISE high PM objects (Schneider+, 2016)
J/AJ/154/151 : Solar neighborhood .XXXX. New young stars (Bartlett+, 2017)
J/AJ/154/147 : Astrom.&photom. for late-type dwarfs&subdwarfs (Dahn+, 2017)
J/MNRAS/465/4723 : Log of SALT-RSS observations (Koen+, 2017)
J/ApJ/842/118 : BDs with spectral type later than T6 (Leggett+, 2017)
J/ApJ/854/145 : Opt. phot. & NIR spectroscopy of Wolf 1130 (Mace+, 2018)
J/ApJ/867/109 : Spitzer observations of Y and T dwarfs (Martin+, 2018)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 28 A28 --- Name Discovery name of the dwarf
30- 38 A9 --- OID Other designation
40 A1 --- f_Name [aghjmnprs] Flag on Name (1)
42- 51 A10 --- r_Name Discovery reference(s) (see refs.dat file)
53- 73 A21 --- WISEA WISEA designation
75- 84 A10 --- SpT Measured infrared spectral type
86 A1 --- f_SpT [b-fikqtu] Flag on SpT (1)
88- 92 A5 --- r_SpT Reference(s) of SpT (see refs.dat file)
94-101 F8.4 mas plx [46.1/274.81]? Measured parallax
103-109 F7.4 mas e_plx [0.03/13]? Parallax uncertainty
111-113 A3 --- n_plx Note on plx
115 A1 --- fnplx [l] Flag on n_plx (1)
117-118 I2 --- r_plx [1/79]? Reference of plx (see refs.dat file)
120-134 A15 --- AName Abbreviated name as in other tables;
column added by CDS
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = 0039+2115: Also known as HD 3651B.
b = 0309-5016: Type estimated from methane imaging.
c = 0323-5907: The ch1-ch2 color of 1.244±0.033mag (Table 2) suggests
a type of T6 based on Figure 11 of Kirkpatrick+ (2011, J/ApJS/197/19).
d = 0628-8057: Type estimated from methane imaging.
e = 0807-6618: Given the fact that the absolute ch2 magnitude of this object
(15.43±0.09mag) and ch1-ch2 color (2.81±0.16mag) are most like the
Y1 dwarfs, this object has been assigned a temporary spectral type of Y1.
f = 0855-0714: Given the fact that the absolute H and ch2 magnitudes of this
object (27.04±0.24 and 17.13±0.02mag, respectively) are much fainter,
and the H-W2 and ch1-ch2 colors (10.13±0.24 and 3.55±0.07mag,
respectively) much redder, than that of the other Y dwarfs typed as late
as ≥Y2, this object has been assigned a temporary spectral type of ≥Y4.
g = 0950+0117: This is a common-proper-motion companion to LHS 6176.
h = 1118+3125: Also known as the distant companion to xi UMa (Gl 423).
i = 1231+0837: Object earlier in type than T6, but nonetheless included here
because we obtained a parallax with Spitzer.
j = 1300+1221: Also known as Ross 458C.
k = 1333-1607: The Table 2 colors of ch1-ch2=1.811±0.050mag and
H-ch2=3.369±0.132mag suggest, based on Figures 11 and 14 of
Kirkpatrick+ (2011, J/ApJS/197/19), a type of T7.5.
l = 1416+1348: The parallax of the sdL primary is quoted here for
the (sd)T companion.
m = 1423+0114: Also known as BD+01 2920B.
n = 1504+0538: Also known as HIP 73786B.
o = 1541-2250: Source not extracted in the AllWISE Source Catalog (II/328), so
this designation is the one from the WISE All-Sky Source Catalog (II/311).
p = 1758+4633: Also known as GJ 4040B.
q = 2017-3421: Type estimated from methane imaging.
r = 2146-0010: Also known as Wolf 940B and GJ 1263B.
s = 2204-5646: Also known as epsilon Indi Bb.
t = 2211-4758: Type estimated from methane imaging.
u = 2302-7134: Type estimated from methane imaging. Object earlier in type
than T6, but nonetheless included here because we obtained a parallax
with Spitzer.
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- AName Abbreviated name
17 A1 --- f_AName [be] Flag on AName (1)
19 A1 --- l_Hmag Limit flag on Hmag
21- 25 F5.2 mag Hmag [13.19/25.29]? H-band magnitude (2)
27- 30 F4.2 mag e_Hmag [0.01/0.41]? Uncertainty on Hmag
32- 34 I3 --- r_Hmag [1/146]? Reference on Hmag
36 A1 --- l_W1mag Limit flag on W1mag
38- 43 F6.3 mag W1mag [12.97/19.81]? WISE W1 (3.4um) band
magnitude
45- 49 F5.3 mag e_W1mag [0.02/0.53]? Uncertainty on W1mag
51 A1 --- f_W1mag [d] Flag on W1mag (1)
53- 58 F6.3 mag W2mag [11.26/16.82]? WISE W2 (4.6um) band magnitude
60- 64 F5.3 mag e_W2mag [0.019/0.15]? Uncertainty on W2mag
66 A1 --- f_W2mag [c] Flag on W2mag (1)
68 A1 --- l_W3mag Limit flag on W3mag
70- 75 F6.3 mag W3mag [9.66/13.43]? WISE W3 (12um) band magnitude
77- 81 F5.3 mag e_W3mag [0.03/0.52]? Uncertainty on W3mag
83- 88 F6.3 mag 3.6mag [12.23/19.65]? Spitzer/IRAC Ch1 (3.6um) band
magnitude
90- 94 F5.3 mag e_3.6mag [0.01/0.15]? Uncertainty on ch1mag
96-101 F6.3 mag 4.5mag [11.3/16.84]? Spitzer/IRAC Ch2 (4.5um) band
magnitude
103-107 F5.3 mag e_4.5mag [0.016/0.06]? Uncertainty on ch2mag
109-116 I8 --- AOR ? Spitzer AOR used
117 A1 --- f_AOR [ac] Flag on AOR (1)
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = 0039+2115: Spitzer photometry is from Luhman+ (2007ApJ...654..570L 2007ApJ...654..570L).
b = 0521+3640: AllWISE W1 photometry highly contaminated by the halo
of a much brighter star.
c = 0807-6618: W2 photometry is from a preliminary CatWISE detection
(Meisner+ 2018RNAAS...2..140M 2018RNAAS...2..140M).
Spitzer photometry is from Luhman+ (2012ApJ...760..152L 2012ApJ...760..152L).
d = 0855-0714: W1 magnitude is measured by ELW from a moving coadd using
eleven epochs of WISE and NEOWISE data between early 2010 and
mid-2018. The epochs themselves are comprised of 177 individual
exposures. The software includes one moving source (WISE 0855-0714
itself) and a grid of 275 fixed background sources that model the
fixed celestial pattern. The two known interfering sources in the
2010 epochs (see Wright+ 2014AJ....148...82W 2014AJ....148...82W) are measured, free of
contamination by WISE 0855-0714, and are allowed for when using the
2010 data. The fit, which uses a scaled PSF for each source (moving or
fixed) and a flat background for each frame, is in principle immune to
confusion noise. The resulting W1 magnitude is much dimmer than the
measurement made by Wright+ (2014AJ....148...82W 2014AJ....148...82W), which used only one
epoch of NEOWISE Reactivation data. This new W1 measurement is a
2.1sigma detection (flux=1.896±0.905muJy; the most likely value is
1.809muJy).
e = 1541-2250: WISE photometry is from the All-Sky Catalog.
Note (2): For VHS (II/359) H-band magnitudes, the hAperMag3 was chosen, per
the recommendations given at http://horus.roe.ac.uk/vsa/dboverview.html.
The AperMag3 values from ULAS (II/319) and UGPS (II/316) were also the
ones used.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- AName Abbreviated name
17- 27 A11 "date" Date1 First date of observation (UT)
29- 39 A11 "date" Date2 Last date of observation (UT)
41- 43 F3.1 yr Base [2.6/8.2] Baseline
45 A1 --- f_Base [a] Flag on Baseline (1)
47- 95 A49 --- Prog Program number(s) (and number of epochs)
--------------------------------------------------------------------------------
Note (1):
a = 1639-6847: In the observation from program 80109 and the first
observation from program 90007, the object is blended with a
background source. This reduces the usable time baseline for
astrometric measurements from 5.2 to 4.2yr because thefirst clean
image was taken on 2013 May 19(UT).
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- AName Abbreviated name
17- 26 F10.6 deg RAdeg Right ascension (J2000) at Ep=2014.0
28- 31 F4.1 deg e_RAdeg [2.2/19.7] RAdeg uncertainty
33- 42 F10.6 deg DEdeg Declination (J2000) at Ep=2014.0
44- 47 F4.1 deg e_DEdeg [2.2/25] DEdeg uncertainty
49- 53 F5.1 mas plx [20/439] Absolute parallax from the best-fit
55- 57 F3.1 mas e_plx [2.2/8.2] Parallax uncertainty
59- 61 F3.1 mas Corr [0.4/2.2] Correction to convert relative
parallax to absolute units (see Section 5.2.3)
63- 65 F3.1 mas e_Corr [0.1/1.2] Corr uncertainty
67- 73 F7.1 mas/yr pmRA [-8119/1285] Best-fit proper motion in right
ascension direction
75- 77 F3.1 mas/yr e_pmRA [0.6/7] PmRA uncertainty
79- 85 F7.1 mas/yr pmDE [-3100/680] Best-fit proper motion in
declination direction
87- 89 F3.1 mas/yr e_pmDE [1/8] PmDE uncertainty
91- 97 F7.3 --- Chi2 [2.4/307.4] ξ2 value of the best fit
99-100 I2 --- dof [7/39] Number of degrees of freedom
102-107 F6.3 --- rChi2 [0.19/23.7] Reduced ξ2 value
109-110 I2 --- Nep [6/22] Number of Spitzer epochs used
in the solution
112-115 A4 --- Nreg Number of re-registration star (1)
--------------------------------------------------------------------------------
Note (1): The letter following the number of re-registration stars indicates
whether we used the high-S/N ("H") or low-S/N ("L") limit for their
selection. See Section 5.2.2 for details.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1-15 A15 --- AName Abbreviated name
17-22 F6.2 mas plx [41.2/212.7] Relative parallax
24-27 F4.2 mas e_plx [0.5/6] Parallax uncertainty
29-34 F6.1 mas/yr mu [52.7/2572.2] Relative proper motion
36-38 F3.1 mas/yr e_mu [0.1/5.7] Proper motion uncertainty
40-45 F6.2 deg PA [75.9/324] Position angle (east of north) θ
47-50 F4.2 deg e_PA [0.03/0.8] Theta uncertainty
52-55 F4.2 yr Base [2.2/6.1] Total time baseline of the observations
57-59 I3 --- Nep [38/133] Number of independent nights
of observation
61-62 I2 --- Nreg [7/20] Number of registration stars
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Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- AName Abbreviated name
17- 23 A7 --- Prog Source of measurement (either NTT or UKIRT) (1)
25- 34 F10.6 deg RAdeg [10.1/355.63] Right ascension (J2000)
36- 46 F11.7 deg DEdeg [-76.6/36.7] Declination (J2000)
48- 54 F7.2 yr Epoch [2009.92/2016.79] Epoch of observation
56- 60 F5.1 mas plx [39.8/122.2] Absolute parallax
62- 64 F3.1 mas e_plx [1.5/6.7] Parallax uncertainty
66- 68 F3.1 mas Corr [0.3/1.2] Correction from relative parallax
70- 75 F6.1 mas/yr pmRA [-905.2/780.2] Proper motion in right
ascension direction
77- 79 F3.1 mas/yr e_pmRA [0.6/4.1] PmRA uncertainty
81- 87 F7.1 mas/yr pmDE [-1511/294.6] Proper motion in declination
89- 91 F3.1 mas/yr e_pmDE [0.7/7.8] PmDE uncertainty
93- 95 F3.1 yr Base [2.1/9.7] Total time baseline
97- 99 I3 --- Nreg [40/483] Number of registration stars
101-102 I2 --- Nobs [11/44] Total number of observations
--------------------------------------------------------------------------------
Note (1): Fourteen objects were targeted as part of the NTT Parallaxes of
Southern Extremely Cool objects (NPARSEC) project. NPARSEC is a
European Southern Observatory long-term program (186.C-0756; R. Smart, PI)
of 96 nights on the NTT's infrared spectrograph and imaging camera Son
Of ISAAC (SOFI). The main observational program ran from 2010 October
1 through 2013 September 15, although various ad hoc requests were
made to extend the temporal baseline through 2018.
The UKIRT program, described in Marocco+ (2010A&A...524A..38M 2010A&A...524A..38M), used
service observations on the UKIRT Wide Field Camera (WFCAM), which is
a large-field infrared imager. This program started as a director's
discretionary request in 2007 and continued under various proposals
and target lists until 2016.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- AName Abbreviated name
17- 24 A8 --- SpT Adopted spectral type
26- 29 F4.1 --- SpCode [5/14]? Spectral type code
31- 35 F5.1 mas plx [20.8/438.9] Measured parallax
37- 40 F4.1 mas e_plx [0.1/13] Parallax uncertainty
42- 47 F6.1 mas/yr mu [19.5/8147.3] Total proper motion
49- 52 F4.1 mas/yr e_mu [0.1/67.8] Mu uncertainty
54- 60 A7 --- Ref Reference for plx and mu (see refs.dat file)
62- 66 F5.2 mag Hmag [14.07/27.04]? H-band absolute magnitude
68- 71 F4.2 mag e_Hmag [0.01/0.73]? Uncertainty on Hmag
73- 77 F5.2 mag W1mag [13.88/23.02]? WISE W1 (3.4um) band
absolute magnitude
79- 82 F4.2 mag e_W1mag [0.02/0.87]? Uncertainty on W1mag
84- 88 F5.2 mag W2mag [11.82/16.92]? WISE W2 (4.6um) band
absolute magnitude
90- 93 F4.2 mag e_W2mag [0.02/0.74]? Uncertainty on W2mag
95- 99 F5.2 mag W3mag [10.39/14.35]? WISE W3 (12um) band
absolute magnitude
101-104 F4.2 mag e_W3mag [0.04/0.54]? Uncertainty on W3mag
106-110 F5.2 mag 3.6mag [13.11/20.68]? Spitzer/IRAC Ch1 (3.6um) band
absolute magnitude
112-115 F4.2 mag e_3.6mag [0.02/0.73]? Uncertainty on ch1mag
117-121 F5.2 mag 4.5mag [11.83/17.13]? Spitzer/IRAC Ch2 (4.5um) band
absolute magnitude
123-126 F4.2 mag e_4.5mag [0.02/0.73]? Uncertainty on ch2mag
128-132 F5.1 km/s Vtan [1.9/110.3] Tangential velocity
134-137 F4.1 km/s e_Vtan [0.1/10] Vtan uncertainty
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Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- AName Abbreviated name
16 A1 --- m_AName Component of the source
18- 25 A8 --- SpT Spectral type
27- 44 A18 K TeffM Teff from forward modeling (1)
46- 63 A18 --- r_TeffM Reference on TeffM (see refs.dat file)
65- 67 I3 K TeffA [605/815]? Teff from retrieval analysis
from Line+ 2017ApJ...848...83L 2017ApJ...848...83L
69- 72 I4 K TeffSB [569/1016]? Teff from Stefan-Boltzmann
from Filippazzo+ (2015, J/ApJ/810/158)
74- 77 I4 K Teff [250/1070] Adopted effective temperature
--------------------------------------------------------------------------------
Note (1): The Teff values taken from Beichman+ (2014ApJ...783...68B 2014ApJ...783...68B) are
those using the models of Morley+ (2012ApJ...756..172M 2012ApJ...756..172M).
Dupuy & Kraus (2013Sci...341.1492D 2013Sci...341.1492D) and Dupuy+ (2015ApJ...803..102D 2015ApJ...803..102D)
used model-dependent bolometric corrections to a limited set of
photometry to derive bolometric luminosities, which in turn were used
to derive Teff value using model-derived radii. Because this method is
so dependent upon a model grid --albeit an evolutionary grid as
opposed to an atmospheric one-- we categorize these estimates under
the forward modeling technique rather than the Stefan-Boltzmann one.
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Byte-by-byte Description of file: table11.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 K Trange Temperature range (warmer objects>1050K)
10-24 A15 --- AName Abbreviated name
25 A1 --- m_AName Component of the source
27-30 F4.1 --- SpT Adopted spectral type (1)
31 A1 --- u_SpT Uncertainty flag on SpT
(estimates, not actual measures)
33-37 F5.1 mas plx [50/439] Parallax
39-42 F4.1 mas e_plx [0.3/13]? Parallax uncertainty
43 A1 --- u_plx Uncertainty flag on plx
(estimates, not actual measures)
45-48 I4 K Teff [250/1064] Effective temperature
50-65 A16 --- n_Teff Note on Teff (2)
67-71 F5.1 deg GLON Galactic longitude
73-77 F5.1 deg GLAT Galactic latitude
79-92 A14 --- Note Note
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Note (1): Spectral types are coded as T6=6.0, T6.5=6.5, T7=7.0 ... Y0=10.0, etc.
Note (2): These are the methods used in determining the Teff value for the
source. Code as follows:
1 = MH relation
2 = MW2 relation
3 = Mch2 relation
4 = H-W2 relation
5 = spectral type relation
6 = ch1-ch2 relation
7 = value taken from Table 10.
All relations are those shown in Figure 14 and described in the last
six lines of Table 8.
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Byte-by-byte Description of file: table13.dat
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Bytes Format Units Label Explanations
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1- 27 A27 --- Name Discovery name of the source
29 A1 --- f_Name [b] Flag on Name
31- 41 A11 --- OID Other designation
43- 49 A7 --- r_Name Reference on Name (see refs.dat file)
51- 58 F8.4 mas plx [50.02/135.24] Adopted parallax
60- 65 F6.4 mas e_plx [0.06/3.1]? Parallax uncertainty
67- 69 I3 --- r_plx [1/377] Reference on plx (see refs.dat file)
71- 78 A8 --- SpTopt Optical spectral type
80- 82 I3 --- r_SpTopt [303/375]? Reference on SpTopt (see refs.dat file)
84- 99 A16 --- SpTnir NIR spectral type
101-108 A8 --- r_SpTnir Reference on SpTnir (see refs.dat file)
110-114 F5.1 deg GLON Approximate Galactic longitude
116-120 F5.1 deg GLAT Approximate Galactic latitude
122-128 A7 --- SpT Final adopted spectral type
130-133 I4 K Teff1 [1500/1950]? Effective temperature
(lower range) (1)
134 A1 --- --- [-]
135-138 I4 K Teff2 [1650/2100]? Effective temperature
(upper range) (1)
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Note (1): Teff bin into which each object is mapped. See Section 9.3.2.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Ref [1/378] Reference code
5- 23 A19 --- BibCode Bibcode of the reference
25- 49 A25 --- Auth Author(s)
51-102 A52 --- Comm Comment
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 01-Dec-2020