J/AJ/168/159 Census of BPMG & other nearby associations with Gaia (Luhman, 2024)
A census of the β Pic moving group and other nearby associations with Gaia.
Luhman K.L.
<Astron. J., 168, 159 (2024)>
=2024AJ....168..159L 2024AJ....168..159L
ADC_Keywords: Associations, stellar; Spectral types; Equivalent widths;
Radial velocities; Space velocities; Photometry, infrared;
Optical; Proper motions; Cross identifications; X-ray sources
Keywords: Star formation ; Initial mass function ; Low mass stars ;
Stellar associations ; Circumstellar disks ; Protoplanetary disks
Abstract:
I have used the third data release of the Gaia mission to improve the
reliability and completeness of membership samples in the β Pic
moving group (BPMG) and other nearby associations with ages of
20-50Myr (Sco Body, Carina, Columba, χ1 For, Tuc-Hor, IC 2602,
IC 2391, NGC 2547). I find that Carina, Columba, and χ1 For are
physically related and coeval, and that Carina is the closest fringe
of a much larger association. Similarly, Tuc-Hor and IC 2602 form a
coeval population that is spatially and kinematically continuous. Both
results agree with hypotheses from Gagne+ 2018, J/ApJ/856/23. I have
used the new catalogs to study the associations in terms of their
initial mass functions, X-ray emission, ages, and circumstellar disks.
For instance, using the model for Li depletion from
Jeffries+ 2023MNRAS.523..802J 2023MNRAS.523..802J, I have derived an age of
24.7-0.6+0.9Myr for BPMG, which is similar to estimates from
previous studies. In addition, I have used infrared photometry from
the Wide-field Infrared Survey Explorer to check for excess emission
from circumstellar disks among the members of the associations, which
has resulted in a dramatic increase in the number of known disks
around M stars at ages of 30-50Myr and a significant improvement in
measurements of excess fractions for those spectral types and ages.
Most notably, I find that the W3 excess fraction for M0-M6 initially
declines with age to a minimum in BPMG (<0.015), increases to a
maximum in Carina/Columba/χ1 For (0.041-0.007+0.009, 34Myr),
and declines again in the oldest two associations (40-50Myr). The
origin of that peak and the nature of the M dwarf disks at >20Myr are
unclear.
Description:
To measure and refine spectral classifications for candidate members
of β Pic moving group (BPMG), I have obtained spectra for
84 sources and I have analyzed archival spectra for four additional
stars. For 58 of these sources, spectroscopy is reported for the first
time in this study.
The new observations were performed with SpeX at the NASA Infrared
Telescope Facility (IRTF), the Goodman spectrograph at the Southern
Astrophysical Research Telescope (SOAR), FLAMINGOS-2 at the Gemini
South telescope, and the Cerro Tololo Ohio State Multi-Object
Spectrograph (COSMOS) at the 4m Blanco telescope at the Cerro Tololo
Inter-American Observatory (CTIO).
The archival data were collected with the RC spectrograph at the CTIO
1.5m telescope through program UR10B-05 (Mamajek E.) and with the
Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope
through programs GS-2012B-Q-92 (Rodriguez D.) and GS-2012B-Q-70
(Gagne J.).
See Section 2.2.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 158 137 Spectroscopic data for adopted members of the
β Pic moving group (BPMG) and other
associations
table3.dat 582 3492 Adopted members of BPMG, Sco Body, Car-Ext,
Columba, chi1 For, Tuc-Hor, IC 2602, and IC 2391
table4.dat 241 24 Previous candidates excluded from BPMG catalog
table5.dat 308 300 Adopted members of NGC 2547
refs.dat 76 191 References
sp/* . 136 Individual optical and infrared spectra (in CSV
format) of members of BPMG and other associations
obtained in this study (Data behind Figure 3)
--------------------------------------------------------------------------------
See also:
B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)
B/ocl : Optically visible open clusters and Candidates (Dias+ 2002-2015)
III/117 : MK Classifications of Close Visual Binaries (Corbally, 1984)
III/123 : Dwarf K and M stars of small proper motion (Stephenson 1986)
III/150 : Perkins Revised MK Types for the Cooler Stars (Keenan+ 1989)
III/182 : HDE Charts: positions, proper motions (Nesterov+ 1995)
III/198 : Palomar/MSU nearby star spectroscopic survey (Hawley+ 1997)
II/328 : AllWISE Data Release (Cutri+ 2013)
II/335 : Revised cat. of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)
I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)
III/286 : APOGEE-2 DR17 final allStar catalog (Abdurro'uf+, 2022)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/A+AS/104/315 : Member of Herbig Ae/Be stellar group (The+ 1994)
J/ApJS/99/135 : Rotation and Spectral Peculiarities (Abt+ 1995)
J/ApJ/555/932 : IR fluxes of solar-type stars (Spangler+, 2001)
J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)
J/other/ARA+A/42.685 : Young stars near the Sun (Zuckerman+, 2004)
J/A+A/440/1061 : Southern red high proper motion objects (Lodieu+, 2005)
J/ApJ/620/1010 : Spitzer 24µm photometry of A dwarfs (Rieke+, 2005)
J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)
J/A+A/446/515 : Distances of nearby ultracool dwarfs (Phan-Bao+, 2006)
J/AJ/132/866 : New M dwarfs in solar neighborhood (Riaz+, 2006)
J/ApJ/653/675 : Spitzer 24µm photometry of A dwarfs (Su+, 2006)
J/A+A/460/695 : Associations Containing Young stars (Torres+, 2006)
J/AJ/133/439 : Luminosity function of M7-L8 ultracool dwarfs (Cruz+, 2007)
J/AJ/133/2825 : Star beyond the NLTT catalog (Reid+, 2007)
J/ApJ/660/1556 : Characterization of dusty debris disks (Rhee+, 2007)
J/AJ/133/2258 : Activity and kinematics of ultracool dwarfs (Schmidt+, 2007)
J/AJ/133/2524 : Spectra of young nearby stars (White+, 2007)
J/ApJ/689/1295 : Li test implications for brown dwarfs (Kirkpatrick+, 2008)
J/AJ/136/1290 : Ultracool dwarfs from the 2MASS (Reid+, 2008)
J/A+A/498/949 : Veloc. of F-K dwarfs in open clusters (Mermilliod+, 2009)
J/ApJ/699/649 : Young M dwarfs within 25pc. I. (Shkolnik+, 2009)
J/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)
J/AJ/140/119 : βPic & AB Dor moving groups members (Schlieder+, 2010)
J/AJ/144/99 : Near-IR spectroscopy of 36 late M dwarfs (Deshpande+, 2012)
J/ApJ/754/44 : The AstraLux Large M-dwarf Survey (Janson+ 2012)
J/AJ/143/80 : Low-mass stars of beta Pic & AB Dor (Schlieder+, 2012)
J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)
J/ApJ/768/25 : Spitzer and Herschel obs. of debris disks (Gaspar+, 2013)
J/AJ/145/102 : Sp. of bright M dwarfs in the northern sky (Lepine+, 2013)
J/ApJ/762/88 : Young stellar kinematic group cand. members (Malo+, 2013)
J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)
J/MNRAS/437/391 : IR excess in Sun-like stars with WISE (Cruz-Saenz+, 2014)
J/MNRAS/443/2561 : CONCH-SHELL catalog of nearby M dwarfs (Gaidos+, 2014)
J/AJ/148/3 : Debris disk candidates detected with AKARI/FIS (Liu+, 2014)
J/AJ/147/20 : Spectroscopy of 447 nearby M dwarfs (Newton+, 2014)
J/ApJS/212/10 : WISE IR excesses for stars within 75pc (Patel+, 2014)
J/MNRAS/443/2815 : Cerro Armazones spectroscopy of F dwarfs (Pribulla+, 2014)
J/AJ/147/85 : Solar neighborhood. XXXIII. 45 M dwarfs (Riedel+, 2014)
J/MNRAS/454/593 : Young moving groups in solar neighbourhood (Bell+, 2015)
J/ApJS/220/18 : BDKP IV. RVs of M & L dwarfs with MagE (Burgasser+, 2015)
J/A+A/580/A88 : Stellar multiplicity in 3-1000AU (Elliott+, 2015)
J/AJ/149/64 : MIPSGAL 24µm point source catalog (Gutermuth+, 2015)
J/ApJS/220/16 : SpeX NIR survey of 886 nearby M dwarfs (Terrien+, 2015)
J/ApJS/225/15 : IR excess stars from Tycho-2 and AllWISE (Cotten+, 2016)
J/ApJS/225/10 : Kinematic analysis of M7-L8 dwarfs (Faherty+, 2016)
J/ApJ/833/96 : Hawaii infrared parallax program. II. (Liu+, 2016)
J/ApJ/850/34 : 3000-25000Å spectroscopy of nearby M dwarfs (Bar+, 2017)
J/ApJS/229/28 : SFiNCs: X-ray, IR and membership catalogs (Getman+, 2017)
J/MNRAS/465/4723 : Log of SALT-RSS observations (Koen+, 2017)
J/A+A/600/A19 : Spectra of 28 nearby young late-M dwarfs (Phan-Bao+, 2017)
J/ApJ/840/87 : Young star systems observed with SALT (Riedel+, 2017)
J/AJ/154/69 : ACRONYM II. β Pictoris Moving Group (Shkolnik+, 2017)
J/AJ/155/34 : The NIR sp. of neighboring L dwarfs (Cruz+, 2018)
J/MNRAS/475/1960 : ESPaDOnS spectropolarimeter obs. of M dwarfs (Fouque+, 2018)
J/ApJ/862/138 : BANYAN. XIII. Nearby young assoc. with Gaia (Gagne+, 2018)
J/MNRAS/480/488 : Mult. absorption features in debris discs (Iglesias+, 2018)
J/A+A/616/A7 : Gaia DR2 RV standard stars cat. (Soubiran+, 2018)
J/A+A/615/A12 : 24 nearby open clusters TGAS & HSOY reanalysis (Yen+, 2018)
J/ApJ/877/60 : YMGs. I. Young binaries & lithium-rich stars (Bowler+, 2019)
J/MNRAS/489/3625 : Applying Chronostar to β Pic group (Crundall+, 2019)
J/AJ/157/234 : ACRONYM. III. Cand. young low-mass stars (Schneider+, 2019)
J/A+A/643/A71 : Members for 20 open clusters (Gutierrez Albarran+, 2020)
J/A+A/636/A36 : Absolute RVs of CARMENES M dwarfs (Lafarga+, 2020)
J/A+A/642/A179 : beta Pict moving group RV of 81 stars (Miret-Roig+, 2020)
J/MNRAS/506/150 : The GALAH+ Survey DR3 (Buder+, 2021)
J/A+A/654/A122 : X1 Fornacis cluster DANCe (Galli+, 2021)
J/ApJ/917/23 : SPYGLASS. I. Mapping young stellar structures (Kerr+, 2021)
J/A+A/645/A84 : Coronae of nearby star clusters (Meingast+, 2021)
J/A+A/645/A30 : SB updated census in SACY sample (Zuniga-Fernandez+, 2021)
J/MNRAS/514/4300 : Late-type dwarfs logR'HK and magnetic fields (Brown+, 2022)
J/A+A/664/A70 : Li depletion in stellar assoc. (Galindo-Guil+, 2022)
J/ApJ/935/43 : X-ray Sources Towards 10 Open Clusters (Getman+, 2022)
J/MNRAS/509/1664 : Membership study of 70 stars clusters (Jackson+, 2022)
J/ApJS/266/11 : Stellar sp. libraries in Opt-NIR. I. (Borisov+, 2023)
J/A+A/676/A129 : Gaia-ESO catalogue version 5.1 (Hourihane+, 2023)
J/A+A/682/A34 : SRG/eROSITA all-sky survey cat. (eRASS1) (Merloni+, 2024)
http://erosita.mpe.mpg.de/dr1/ : eROSITA-DE DR1 (eRASS1) home page
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- GaiaDR3 Gaia EDR3 source name
21- 30 F10.6 deg RAdeg Gaia DR3 right ascension (ICRS) at Epoch=2016.0
32- 41 F10.6 deg DEdeg Gaia DR3 declination (ICRS) at Epoch=2016.0
43- 53 A11 --- SpT Spectral type(s) (1)
55- 66 A12 --- Inst Instrument for spectroscopy ("SpeX", "COSMOS",
"Goodman", "GMOS", "RC Spec", "FLAMINGOS-2")
68- 78 A11 "Y/M/D" Date1 Date of spectroscopy
79 A1 --- --- [,]
80- 90 A11 "Y/M/D" Date2 Second date of spectroscopy if any
92-125 A34 --- File1 Name of the CSV file in subdirectory "sp";
column added by CDS (from Data behind Figure 3)
126 A1 --- --- [,]
127-158 A32 --- File2 Name of the second CSV file in
subdirectory "sp"; column added by CDS
(from Data behind Figure 3)
--------------------------------------------------------------------------------
Note (1): Uncertainties are 0.25 and 0.5 subclass for optical and IR
spectral types, respectively, unless indicated otherwise.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- GaiaDR3 ? Gaia DR3 source name
21- 69 A49 --- Name Other source name
71- 80 F10.6 deg RAdeg Gaia DR3 right ascension (ICRS) at
Epoch=2016.0 (1)
82- 91 F10.6 deg DEdeg Gaia DR3 declination (ICRS) at Epoch=2016.0
(1)
93- 117 A25 --- SpTlit Spectral type
119- 136 A18 --- r_SpTlit Spectral type reference (s)
(see refs.dat file)
138- 142 A5 --- SpT Adopted spectral type
144 A1 --- f_EWLi Flag for EWLi
146- 149 I4 0.1pm EWLi [-95/1000]? Equivalent width of Li
151- 153 I3 0.1pm e_EWLi [1/184]? Error in EWLi
155- 157 I3 --- r_EWLi [201/232]? Li reference (see refs.dat file)
159- 166 F8.3 mas/yr pmRA [-171/297]? Gaia DR3 proper motion in right
ascension (1)
168- 173 F6.3 mas/yr e_pmRA [0.008/12.1]? Error in pmRA
175- 182 F8.3 mas/yr pmDE [-418/84.1]? Gaia DR3 proper motion in
declination (1)
184- 188 F5.3 mas/yr e_pmDE [0.008/9.4]? Error in pmDE
190- 196 F7.3 mas plx [5/103]? Gaia DR3 parallax (1)
198- 202 F5.3 mas e_plx [0.009/2]? Error in plx
204- 210 F7.3 pc rmedgeo [9.7/198]? Median of geometric distance
posterior (Bailer-Jones+ 2021, I/352) (1)
212- 218 F7.3 pc rlogeo [9.7/197]? 16th percentile of geometric
distance posterior (Bailer-Jones+ 2021, I/352)
(1)
220- 226 F7.3 pc rhigeo [9.7/203]? 84th percentile of geometric
distance posterior (Bailer-Jones+ 2021, I/352)
(1)
228- 233 E6.3 km/s RVel [-12/32]? Radial velocity
235- 239 E5.2 km/s e_RVel [0.001/12]? Error in RVel
241- 243 I3 --- r_RVel [301/342]? Radial velocity reference
(see refs.dat file)
245- 250 F6.2 km/s U [-25/1.5]? U component of space velocity
252- 255 F4.2 km/s e_U [0.01/5.5]? Error in U
257- 262 F6.2 km/s V [-33.7/-6.8]? V component of space velocity
264- 267 F4.2 km/s e_V [0.01/5.1]? Error in V
269- 274 F6.2 km/s W [-12.4/5]? W component of space velocity
276- 280 F5.2 km/s e_W [0.01/10.4]? Error in W
282- 287 F6.3 mag Gmag [3.4/21]? Gaia DR3 G magnitude
289- 293 F5.3 mag e_Gmag [0.002/0.04]? Error in Gmag
295- 300 F6.3 mag GBPmag [3.38/22.5]? Gaia DR3 Gbp magnitude
302- 306 F5.3 mag e_GBPmag [0.003/0.8]? Error in GBPmag
308- 313 F6.3 mag GRPmag [3.5/19.3]? Gaia DR3 Grp magnitude
315- 319 F5.3 mag e_GRPmag [0.003/0.5]? Error in GRPmag
321- 326 F6.3 --- RUWE [0.6/46.3]? Gaia DR3 renormalized unit weight
error
328- 332 A5 --- --- [2MASS]
334- 350 A17 --- 2MASS Closest 2MASS source within 3 arcsec
(JHHMMSSss+DDMMSSs)
352- 355 F4.2 arcsec 2Msep [0/3]? Angular separation between Gaia DR3
(epoch 2000) and 2MASS
357 A1 --- 2Mct Is this Gaia source the closest match for the
2MASS source?
359- 384 A26 --- WISE Closest WISE source within 3 arcsec (2)
386- 389 F4.2 arcsec WISEsep [0/3]? Angular separation between Gaia DR3
(epoch 2010.5) and WISE
391 A1 --- WISEct Is this Gaia source the closest match for the
WISE source?
393- 398 F6.3 mag Jmag [3.6/16.8]? 2MASS J magnitude
400- 404 F5.3 mag e_Jmag [0.015/1.1]? Error in Jmag
406- 411 F6.3 mag Hmag [3.5/15.8]? 2MASS H magnitude
413- 417 F5.3 mag e_Hmag [0.015/10]? Error in Hmag
419- 424 F6.3 mag Ksmag [3.5/15.2]? 2MASS Ks magnitude
426- 430 F5.3 mag e_Ksmag [0.016/10]? Error in Ksmag
432- 437 F6.3 mag W1mag [3.6/15]? WISE W1 magnitude
439- 443 F5.3 mag e_W1mag [0.015/0.6]? Error in W1mag
445- 450 F6.3 mag W2mag [3/14.8]? WISE W2 magnitude
452- 456 F5.3 mag e_W2mag [0.013/0.2]? Error in W2mag
458- 462 A5 --- f_W2mag Flag on W2mag (G1)
464- 469 F6.3 mag W3mag [2.59/12.8]? WISE W3 magnitude
471- 475 F5.3 mag e_W3mag [0.007/0.6]? Error in W3mag
477- 481 A5 --- f_W3mag Flag on W3mag (G1)
483- 487 F5.3 mag W4mag [0.014/9.4]? WISE W4 magnitude
489- 493 F5.3 mag e_W4mag [0.015/0.5]? Error in W4mag
495- 499 A5 --- f_W4mag Flag on W4mag (G1)
501- 502 A2 --- ExcW2 Excess present in W2?
504- 505 A2 --- ExcW3 Excess present in W3?
507- 508 A2 --- ExcW4 Excess present in W4?
510- 524 A15 --- DkType Disk Type
526- 531 A6 --- --- [eRASS1]
533- 548 A16 --- 1eRASS eRASS1 (Merloni+ 2024, J/A+A/682/A34) source
name (<1eRASS JHHMMSS.s+DDMMSS> in Simbad)
550- 554 F5.2 arcsec posErr [0.9/12.3]? Position error from eRASS1 1B
catalog
556- 560 F5.2 arcsec Xsep [0.1/13.5]? Angular separation between Gaia
DR3 (epoch 2020) and eRASS1
562 A1 --- f_Rate Flag for rate
564- 568 A5 ct/s Rate ? Count rate from eRASS1 1B catalog
570- 574 A5 ct/s e_Rate ? Error in Rate
576- 582 A7 --- Assoc Association (3)
--------------------------------------------------------------------------------
Note (1): The astrometry and distance for HD 161460 are from Gaia DR2
and Bailer-Jones+ 2018, I/347.
Those parameters are from Liu+ 2016, J/ApJ/833/96 for
PSO_J318.5338-22.8603.
The proper motion, parallax, and distance for GJ 3076 are from
Riedel+ 2014, J/AJ/147/85.
Note (2): Source name from the AllWISE Source Catalog (II/328),
the AllWISE Reject Catalog, or the WISE All-Sky Source Catalog (II/311).
Note (3): Association as follows:
BPMG = β Pic moving group (193 occurrences)
Car-Ext = Carina-Extended (845 occurrences)
Columba = Columba (51 occurrences)
IC2391 = IC 2391 (486 occurrences)
IC2602 = IC 2602 (516 occurrences)
ScoBody = Sco Body (299 occurrences)
TucHor = Tuc-Hor (815 occurrences)
chi1For = χ1 For (Alessi 13; 287 occurrences)
See Section 3.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq [1/24] ID in Figures 1 and 4
4- 22 I19 --- GaiaDR3 Gaia DR3 source name
24- 56 A33 --- Name Other source name
58- 67 F10.6 deg RAdeg Gaia DR3 right ascension (ICRS) at
Epoch=2016.0 (1)
69- 78 F10.6 deg DEdeg Gaia DR3 declination (ICRS) at Epoch=2016.0 (1)
80- 87 F8.3 mas/yr pmRA [-194/174] Gaia DR3 proper motion in right
ascension (1)
89- 93 F5.3 mas/yr e_pmRA [0.02/0.6] Error in pmRA
95-102 F8.3 mas/yr pmDE [-235/9.3] Gaia DR3 proper motion in
declination (1)
104-108 F5.3 mas/yr e_pmDE [0.016/0.7] Error in pmDE
110-115 F6.3 mas plx [12/61] Gaia DR3 parallax (1)
117-121 F5.3 mas e_plx [0.019/0.6] Error in plx
123-128 F6.3 pc rmedgeo [16.4/84] Median of geometric distance
posterior (Bailer-Jones+ 2021, I/352) (1)
130-135 F6.3 pc rlogeo [16.3/82] 16th percentile of geometric
distance posterior (Bailer-Jones+ 2021, I/352)
(1)
137-142 F6.3 pc rhigeo [16.4/86] 84th percentile of geometric
distance posterior (Bailer-Jones+ 2021, I/352)
(1)
144-149 A6 km/s RVel ? Radial velocity
151-155 A5 km/s e_RVel ? Error in RVel
157-159 I3 --- r_RVel [401/412]? Radial velocity reference
(see refs.dat file)
161-166 F6.2 km/s U [-16/-0.7]? U component of space velocity
168-171 F4.2 km/s e_U [0.01/3.1]? Error in U
173-178 F6.2 km/s V [-19.4/-15.3]? V component of space velocity
180-183 F4.2 km/s e_V [0.02/1.5]? Error in V
185-190 F6.2 km/s W [-12.9/-5]? W component of space velocity
192-195 F4.2 km/s e_W [0.01/2]? Error in W
197-202 F6.3 mag Gmag [3.1/18.6] Gaia DR3 G magnitude
204-208 F5.3 mag e_Gmag [0.003/0.005] Error in Gmag
210-215 F6.3 mag GBPmag [3.47/21.32] Gaia DR3 GBP magnitude
217-221 F5.3 mag e_GBPmag [0.003/0.2] Error in GBPmag
223-228 F6.3 mag GRPmag [2.9/17] Gaia DR3 GRP magnitude
230-234 F5.3 mag e_GRPmag [0.004/0.05] Error in GRPmag
236-241 F6.3 --- RUWE [0.9/48.2]? Gaia DR3 renormalized unit weight
error
--------------------------------------------------------------------------------
Note (1): The astrometry and distance for CD-27 11535 are from
Gaia DR2 (I/345) and Bailer-Jones+ 2018, I/347.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- GaiaDR3 Gaia DR3 source name
21- 44 A24 --- Name Other source name
46- 55 F10.6 deg RAdeg [121.8/123.3] Gaia DR3 right ascension (ICRS)
at Epoch=2016.0
57- 66 F10.6 deg DEdeg [-50/-48.5] Gaia DR3 declination (ICRS) at
Epoch=2016.0
68- 82 A15 --- SpTlit Spectral type
84- 88 A5 --- f_SpTlit Spectral type reference (1)
90- 93 A4 --- SpT Adopted spectral type
95- 100 F6.3 mas/yr pmRA [-9.3/-7.7] Gaia DR3 proper motion in right
ascension
102- 106 F5.3 mas/yr e_pmRA [0.01/0.3] Error in pmRA
108- 112 F5.3 mas/yr pmDE [3.57/5.5] Gaia DR3 proper motion in
declination
114- 118 F5.3 mas/yr e_pmDE [0.01/0.3] Error in pmDE
120- 124 F5.3 mas plx [2.3/2.9] Gaia DR3 parallax
126- 130 F5.3 mas e_plx [0.009/0.3] Error in plx
132- 138 F7.3 pc rmedgeo [348/436] Median of geometric distance
posterior (Bailer-Jones+ 2021, I/352)
140- 146 F7.3 pc rlogeo [328/405] 16th percentile of geometric
distance posterior (Bailer-Jones+ 2021, I/352)
148- 154 F7.3 pc rhigeo [366/474] 84th percentile of geometric
distance posterior (Bailer-Jones+ 2021, I/352)
156- 160 A5 km/s RVel Radial velocity
162- 165 A4 km/s e_RVel Error in RVel
167 I1 --- f_RVel [1/4]? Radial velocity reference (2)
169- 174 F6.3 mag Gmag [7.2/19.1] Gaia DR3 G magnitude
176- 180 F5.3 mag e_Gmag [0/0.01] Error in Gmag
182- 187 F6.3 mag GBPmag [7.2/21.2]? Gaia DR3 Gbp magnitude
189- 193 F5.3 mag e_GBPmag [0.001/0.3]? Error in GBPmag
195- 200 F6.3 mag GRPmag [7.39/17.74]? Gaia DR3 Grp magnitude
202- 206 F5.3 mag e_GRPmag [0.001/0.1]? Error in GRPmag
208- 212 F5.3 --- RUWE [0.76/6.05] Gaia DR3 renormalized unit weight
error
214- 232 A19 --- WISEA AllWISE source name
234- 239 F6.3 mag W1mag [7.6/14.8]? WISE W1 magnitude
241- 245 F5.3 mag e_W1mag [0.02/0.1]? Error in W1mag
247- 252 F6.3 mag W2mag [7.68/14.8]? WISE W2 magnitude
254- 258 F5.3 mag e_W2mag [0.018/0.09]? Error in W2mag
260- 265 F6.3 mag W3mag [7.36/12.5]? WISE W3 magnitude
267- 271 F5.3 mag e_W3mag [0.019/0.3]? Error in W3mag
273- 277 A5 --- f_W3mag Flag on W3mag (G1)
279- 283 F5.3 mag W4mag [4/8.6]? WISE W4 magnitude
285- 289 F5.3 mag e_W4mag [0.02/0.3]? Error in W4mag
291- 295 A5 --- f_W4mag Flag on W4mag (G1)
297- 301 F5.2 mag 24mag [7.37/12.3]? Spitzer [24] magnitude
303- 306 F4.2 mag e_24mag [0.02/0.4]? Error in 24mag
308 A1 --- Exc24 Excess present in [24]?
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Note (1): Spectral type reference as follows:
1 = Jeffries et al. 2003MNRAS.343.1271J 2003MNRAS.343.1271J
2 = Cannon & Pickering (1993, Cat. III/135)
3 = Hartoog et al. 1976ApJ...205..807H 1976ApJ...205..807H
4 = Houk 1978mcts.book.....H 1978mcts.book.....H
5 = Jeffries & Oliveira 2005, J/MNRAS/358/13
6 = Teixeira et al. 2009ApJ...700..454T 2009ApJ...700..454T
Note (2): Radial velocity reference as follows:
1 = Gaia DR3 (I/355)
2 = Hourihane et al. 2023, J/A+A/676/A129
3 = Jackson et al. 2020, J/MNRAS/496/4701
4 = Gontcharov 2006, III/252
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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 code
5- 30 A26 --- Auth First author's name(s)
32- 50 A19 --- BibCode Bibcode of the reference
52- 76 A25 --- Cat VizieR catalog's reference
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Global notes:
Note (G1): Flag on WISE measurements as follows:
nodet = nondetection;
false = detection from AllWISE appears to be false or unreliable
based on visual inspection.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Feb-2025