J/ApJS/201/19 Hawaii Infrared Parallax Program. I. (Dupuy+, 2012)
The Hawaii Infrared Parallax Program.
I. Ultracool Binaries and the L/T Transition.
Dupuy T.J., Liu M.C.
<Astrophys. J. Suppl. Ser. 201, 19 (2012)>
=2012ApJS..201...19D 2012ApJS..201...19D
ADC_Keywords: Stars, double and multiple; Stars, late-type ; Positional data;
Infrared sources; Parallaxes, trigonometric; Photometry, infrared;
Proper motions; Spectral types
Keywords: astrometry - brown dwarfs - infrared:stars - parallaxes - proper
motions - stars: low-mass
Description:
Astrometry and photometry for 318 ultracool dwarfs in 265 systems that
have measured trigonometric parallaxes. To be included in this
tabulation, an object must have a spectral type ≥M6 or a K-band
absolute magnitude >8.5mag. Parallaxes, proper motions, and
coordinates at a specified epoch are given for all objects.
Photometric measurements in MKO, 2MASS, Spitzer, and WISE systems are
given when available. Various other flags that provide additional
information about the object or photometry are included.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
plx-phot.dat 538 318 All astrometry, photometry, and flags
refs.dat 48 220 References
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
Byte-by-byte Description of file: plx-phot.dat
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Bytes Format Units Label Explanations
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1- 29 A29 --- Name Name of object
(SIMBAD compatible if possible)
32- 38 A7 --- SpTopt ? Spectral type from optical data (1)
41- 47 A7 --- SpTnir ? Spectral type from near-IR data (1)
50- 58 A9 --- r_SpT ? Spectral type references in refs.dat file
61- 73 A13 --- Notes ? Flag providing notes on the object (2)
76- 84 F9.5 deg RAdeg Right ascension at J2000 and epoch Epoch
87- 95 F9.5 deg DEdeg Declination at J2000 and epoch Epoch
98-107 F10.2 d Epoch Epoch of RA, DE position (JD)
110-115 F6.2 mas plx Parallax
118-123 F6.2 mas e_plx Parallax error
126-132 F7.2 mas/yr pm Proper motion amplitude (total proper motion)
135-140 F6.2 mas/yr e_pm ? Proper motion amplitude error
143-149 F7.3 deg pmPA Proper motion position angle
152-157 F6.3 deg e_pmPA ? Proper motion PA error
160-162 A3 --- r_plx Parallax and pm references in refs.dat file
165-170 F6.3 mag Ymag ? MKO Y-band magnitude
173-177 F5.3 mag e_Ymag ? MKO Y-band magnitude error
180 I1 --- f_Ymag MKO Y-band magnitude flag (3)
183-188 F6.3 mag Jmag ? MKO J-band magnitude
191-195 F5.3 mag e_Jmag ? MKO J-band magnitude error
198 I1 --- f_Jmag MKO J-band magnitude flag (3)
201-206 F6.3 mag Hmag ? MKO H-band magnitude
209-213 F5.3 mag e_Hmag ? MKO H-band magnitude error
216 I1 --- f_Hmag MKO H-band magnitude flag (3)
219-224 F6.3 mag Kmag ? MKO K-band magnitude
227-231 F5.3 mag e_Kmag ? MKO K-band magnitude error
234 I1 --- f_Kmag MKO K-band magnitude flag (3)
237-242 F6.3 mag L'mag ? MKO L'-band magnitude
245-249 F5.3 mag e_L'mag ? MKO L'-band magnitude error
252 I1 --- f_L'mag MKO L'-band magnitude flag (3)
255-260 F6.3 mag J2mag ? 2MASS J-band magnitude
263-267 F5.3 mag e_J2mag ? 2MASS J-band magnitude error
270 I1 --- f_J2mag 2MASS J-band magnitude flag (3)
273-278 F6.3 mag H2mag ? 2MASS H-band magnitude
281-285 F5.3 mag e_H2mag ? 2MASS H-band magnitude error
288 I1 --- f_H2mag 2MASS H-band magnitude flag (3)
291-296 F6.3 mag K2mag ? 2MASS Ks-band magnitude
299-303 F5.3 mag e_K2mag ? 2MASS Ks-band magnitude error
306 I1 --- f_K2mag 2MASS Ks-band magnitude flag (3)
309-328 A20 --- r_NIR ? MKO and 2MASS references in refs.dat file
331-336 F6.3 mag [3.6] ? IRAC channel 1 magnitude
339-343 F5.3 mag e_[3.6] ? IRAC channel 1 magnitude error
346-351 F6.3 mag [4.5] ? IRAC channel 2 magnitude
354-358 F5.3 mag e_[4.5] ? IRAC channel 2 magnitude error
361-366 F6.3 mag [5.8] ? IRAC channel 3 magnitude
369-373 F5.3 mag e_[5.8] ? IRAC channel 3 magnitude error
376-381 F6.3 mag [8.0] ? IRAC channel 4 magnitude
384-388 F5.3 mag e_[8.0] ? IRAC channel 4 magnitude error
391-396 F6.3 mag W1mag ? WISE band 1 magnitude
399-403 F5.3 mag e_W1mag ? WISE band 1 magnitude error (4)
406-411 F6.3 mag W2mag ? WISE band 2 magnitude
414-418 F5.3 mag e_W2mag ? WISE band 2 magnitude error (4)
421-426 F6.3 mag W3mag ? WISE band 3 magnitude
429-433 F5.3 mag e_W3mag ? WISE band 3 magnitude error (4)
436-441 F6.3 mag W4mag ? WISE band 4 magnitude
444-448 F5.3 mag e_W4mag ? WISE band 4 magnitude error (4)
451 I1 --- nbflg ? WISE number of blends flag
454 I1 --- naflg ? WISE active deblend flag
457-460 A4 --- ccflg ? WISE artifacts flag
463 I1 --- extflg ? WISE extended source flag
466-469 A4 --- varflg ? WISE variability flag
472-475 A4 --- qflg ? WISE photometric quality in each band
478-484 A7 --- r_MIR ? IRAC and WISE references in refs.dat file
487-489 I3 --- Sys Unique system ID to track multiple systems
492 I1 --- M [1/2] Multiplicity flag, 2=known multiple (5)
495-502 F8.3 arcsec sep ? Separation of wide companion,
when applicable
505-510 A6 --- HRes ? High-resolution imaging flag (6)
513-538 A26 --- r_HRes ? High-res imaging references in
refs.dat file
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Note (1): Uncertainties in spectral types are 0.5 subtypes unless otherwise
noted by an appended ":" (±1.0 types), ":." (±1.5 types), "::" (±2.0
types), or "::." (±2.5 types). An appended "p" denotes that the object is
spectrally peculiar. Subdwarf classifications are denoted by the prefixes
d/sd, sd, esd.
Note (2): Object flag meanings are as follows:
lowg = low surface gravity features noted in the literature
lowZ? = suspected low metallicity object, either from known companion or
unusual spectral features
over-L = overluminous for its spectral type, possible binary
pl = planetary mass object
subd = spectroscopically confirmed subdwarf
v-red = unusually red object, possibly young or dusty
young = known young object, either from an age-dated companion that is
∼300 Myr or younger, or from membership in a young moving group
TWA = member of this young moving group
bPic = member of this young moving group
ABDor = member of this young moving group
Tuc-Hor = member of this young moving group
triple = known to be a tight triple system
Note (3): Magnitude flag meanings are as follows:
0 = real photometry
1 = converted between 2MASS/MKO using object's spectrum
2 = synthesized from spectral decomposition constrained by another band's
flux ratio (binaries only)
3 = all synthesized (binaries only)
9 = no measurement
Note (4): Null WISE magnitude errors indicate that the magnitude value given is
the 2-σ upper limit provided in the WISE All-Sky Catalog
Note (5): Multiplicity flag meanings are as follows:
1 = object has no direct evidence for being a tight multiple system
2 = known to be a tight multiple system
Note (6): High-resolution imaging flags contain one character for each
instrument that has observed an object. The meanings of these characters
are as follows:
A = HST/ACS
C = CFHT AO
G = Gemini AO
K = Keck AO
L = Lick AO
N = HST/NICMOS
P = Palomar AO
S = Subaru AO
s = speckle imaging
T = HST/STIS
V = VLT AO
W = HST/WFPC2
Y = Lucky imaging
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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 Reference number
6- 14 A9 --- Name Abbreviated author and year NNNN (AuthNNNN)
17- 35 A19 --- BibCode ADS bibliographic code
38- 48 A11 --- Com Comments
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Acknowledgements:
Trent J. Dupuy, tdupuy(at)cfa.harvard.edu
(End) Patricia Vannier [CDS] 22-Jun-2012