J/ApJ/862/138 BANYAN. XIII. Nearby young assoc. with Gaia DR2 (Gagne+, 2018)
BANYAN.
XIII. A first look at nearby young associations with Gaia Data Release 2.
Gagne J., Faherty J.K.
<Astrophys. J., 862, 138 (2018)>
=2018ApJ...862..138G 2018ApJ...862..138G
ADC_Keywords: Stars, late-type; Proper motions; Radial velocities;
Parallaxes, trigonometric; Spectral types; Associations, stellar
Keywords: methods: data analysis; proper motions; stars: kinematics and dynamics
Abstract:
In this paper, we examine the nearest 100pc entries in Data Release 2
of Gaia to identify previously unrecognized candidate members in young
associations. We analyze 695952 stars with the BANYAN Σ Bayesian
classification software and discover 898 new high-likelihood candidate
members that span a wide range of properties, from spectral types B9
to L2, including 104 comoving systems, 111 brown dwarfs, and 31 new
bona fide members. Our sample is mostly composed of highly active M
dwarfs and will be crucial in examining the low-mass end of the
initial mass function of young associations. Our sample includes new
candidate members near the Galactic plane where previous surveys
suffered from a high rate of contamination. This paper represents the
first step toward a full reassessment of young associations in the
solar neighborhood with the second data release of the Gaia mission.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 71 20 Nearby young associations considered here
table2.dat 135 898 New candidates identified in this work
table3.dat 106 218 Co-moving systems identified in this work
table5.dat 98 31 New bona fide members
refs.dat 84 72 References
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See also:
III/10 : G5 and later stars in a North Galactic Pole region (Upgren 1962)
III/190 : WEB Catalog of Radial Velocities (Duflot+ 1995)
III/198 : Palomar/MSU nearby star spectroscopic survey (Hawley+ 1997)
III/231 : The Tycho-2 Spectral Type Catalog (Wright+, 2003)
II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1 (McMahon+, 2013)
III/279 : RAVE 5th data release (Kunder+, 2017)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/ApJS/99/135 : Rotation and Spectral Peculiarities (Abt+ 1995)
J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)
J/A+AS/123/329 : New weak-line T Tauri stars in Lupus (Krautter+ 1997)
J/AJ/123/2828 : Spectroscopy of northern NLTT stars (Cruz+, 2002)
J/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002)
J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)
J/AJ/126/2048 : NStars project: the Northern Sample. I. (Gray+, 2003)
J/A+A/425/367 : REFLEX Galaxy Cluster Survey catalogue (Boehringer+, 2004)
J/AJ/128/463 : A preliminary 20pc census from the NLTT cat. (Reid+, 2004)
J/other/ARA+A/42.685 : Young stars near the Sun (Zuckerman+, 2004)
J/A+A/442/211 : Spectroscopic distances of 322 NLTT stars (Scholz+, 2005)
J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)
J/A+A/446/485 : New very low-mass members in Taurus (Guieu+, 2006)
J/ApJ/645/676 : Spatial distribution of BDs in Taurus (Luhman+, 2006)
J/AJ/132/866 : New M dwarfs in solar neighborhood (Riaz+, 2006)
J/A+A/460/695 : Associations Containing Young stars (Torres+, 2006)
J/AJ/133/971 : Wide companions of low-mass stars and BDs (Allen+, 2007)
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/A+A/463/671 : Rotational velocities of A-type stars. III. (Royer+, 2007)
J/AJ/133/2258 : Activity and kinematics of ultracool dwarfs (Schmidt+, 2007)
J/A+A/481/661 : Hyades brown dwarfs and very low mass stars (Bouvier+, 2008)
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/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/694/1085 : Radii of exoplanet host stars (van Belle+, 2009)
J/MNRAS/403/1949 : UBV(RcIc)JHK photometry of HIP nearby stars (Koen+, 2010)
J/AJ/141/97 : SDSS DR7 M dwarfs (West+, 2011)
J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)
J/AJ/144/8 : Spectrosc. of G/K/M Sco-Cen complex members (Song+, 2012)
J/AJ/146/156 : APOGEE M-dwarf survey. I. 1st yr veloc. (Deshpande+, 2013)
J/AJ/145/102 : Spectroscopy of bright M dwarfs (Lepine+, 2013)
J/ApJ/762/88 : Young stellar kinematic group cand. members (Malo+, 2013)
J/MNRAS/435/1325 : Membership of the ε Cha association (Murphy+, 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/MNRAS/443/2561 : CONCH-SHELL catalog of nearby M dwarfs (Gaidos+, 2014)
J/AJ/147/146 : Spectroscopy of Tuc-Hor candidate members (Kraus+, 2014)
J/ApJ/788/81 : BANYAN III. RVel & rotation of low-mass stars (Malo+, 2014)
J/AJ/147/20 : Spectroscopy of 447 nearby M dwarfs (Newton+, 2014)
J/A+A/566/A132 : Teff and L for stars in 7 open clusters (Silaj+, 2014)
J/A+A/577/A128 : CARMENES input cat. of M dwarfs. I (Alonso-Floriano+, 2015)
J/MNRAS/454/593 : Young moving groups in solar neighbourhood (Bell+, 2015)
J/ApJS/216/7 : Planets Around Low-Mass Stars (PALMS). IV. (Bowler+, 2015)
J/A+A/573/A126 : VLT/NaCo Large program I. Sample (Desidera+, 2015)
J/ApJS/219/33 : BANYAN. VII. Candidate YMG members from BASS (Gagne+, 2015)
J/ApJ/798/73 : BANYAN All-Sky Survey (BASS) cat. V. YMGs (Gagne+, 2015)
J/MNRAS/447/1267 : Low-mass members of the Octans association (Murphy+, 2015)
J/AJ/149/158 : The BUD sample. I. L dwarf activity sample (Schmidt+, 2015)
J/A+A/588/A103 : 2nd ROSAT all-sky survey (2RXS) source cat. (Boller+, 2016)
J/MNRAS/457/2192 : NCJM catalog of M dwarfs (Cook+, 2016)
J/ApJS/225/10 : Kinematic analysis of M7-L8 dwarfs (Faherty+, 2016)
J/A+A/594/A63 : International Deep Planet Survey results (Galicher+, 2016)
J/ApJ/817/1 : Palomar/MSU & SDSS-DR7 M dwarfs with GALEX (Jones+, 2016)
J/MNRAS/461/794 : Scorpius-Centaurus K-Type Stars (Pecaut+, 2016)
J/AJ/154/69 : ACRONYM II. β Pictoris Moving Group (Shkolnik+, 2017)
J/ApJ/856/23 : BANYAN. XI. The BANYAN Σ algorithm (Gagne+, 2018)
J/ApJ/860/43 : BANYAN. XII. New members from Gaia-Tycho (Gagne+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Assoc Name of the young association (1)
8- 12 F5.1 pc omega [25.4/130] Peak of distance distribution
14- 17 F4.1 pc e_omega [0.7/20] 1σ negative uncertainty
19- 22 F4.1 pc E_omega [0.8/30]? 1σ positive uncertainty
24- 28 F5.1 km/s nu [-12/39] Peak of radial velocity distribution
30- 33 F4.1 km/s e_nu [0.8/20] 1σ negative uncertainty
35- 38 F4.1 km/s E_nu [0.8/10]? 1σ positive uncertainty
40- 43 F4.1 pc Sspa [1.2/22.4] Characteristic spatial scale
in XYZ space
45- 47 F3.1 km/s Skin [0.5/3.6] Characteristic kinematic scale
in UVW space
49 A1 --- u_Age [~] Uncertainty flag on Age
50- 54 F5.1 Myr Age [1/750] Age (or lower range of Age)
55 A1 --- --- [-]
56 I1 Myr Age2 [2]? Upper range of Age
58- 62 F5.1 Myr e_Age [1.4/100]? Negative uncertainty
64- 67 F4.1 Myr E_Age [2/98]? Positive uncertainty
69- 71 I3 --- Ref [101/112] Reference (see refs.dat file)
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Note (1): Full names of young associations as follows:
118Tau = 118 Tau association
ABDMG = AB Doradus moving group
BPMG = β Pictoris moving group
CAR = Carina association
CARN = Carina-Near moving group
CBER = Coma Berenices cluster
COL = Columba association
EPSC = ε Chamaeleontis association
HYA = the Hyades cluster
LCC = Lower Centaurus Crux association
OCT = Octans association
PL8 = Platais 8
THA = the Tucana-Horologium association
THOR = 32 Orionis association
TWA = TW Hya
UCL = Upper Centaurus Lupus association
UMA = the core of the Ursa Major cluster
USCO = Upper Scorpius association
TAU = Taurus star-forming region
XFOR = ξ1 For cluster
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- ID Source identifier (JHHMM+DDMM)
12 A1 --- f_SpT [p] p: estimated from the absolute Gaia G-band
magnitude
13- 20 A8 --- SpT Spectral type
22- 27 A6 --- Assoc Association identifier (as in table 1)
32- 33 I2 h RAh [0/23] Hour of Right Ascension (J2000) (G1)
35- 36 I2 min RAm Minute of Right Ascension (J2000)
38- 43 F6.3 s RAs Second of Right Ascension (J2000)
45- 45 A1 --- DE- Sign of the Declination (J2000)(G1)
46- 47 I2 deg DEd Degree of Declination (J2000) (G1)
49- 50 I2 arcmin DEm Arcminute of Declination (J2000)
52- 56 F5.2 arcsec DEs Arcsecond of Declination (J2000)
58- 64 F7.2 mas/yr pmRA [-576/336] Proper motion along RA times cos(DE)
66- 69 F4.2 mas/yr e_pmRA [0.03/3.8] Uncertainty in pmRA
71- 77 F7.2 mas/yr pmDE [-452/448] Proper motion along DE
79- 82 F4.2 mas/yr e_pmDE [0.03/4.2] Uncertainty in pmDE
84- 89 F6.2 mas plx [10/113] Parallax
91- 94 F4.2 mas e_plx [0.02/3.4] Uncertainty in plx
96-100 F5.1 km/s RVel [-23/45]? Radial velocity
102-105 F4.1 km/s e_RVel [0.1/10]? Uncertainty in RVel
107-129 A23 --- Amb Identifiers of possible associations for
ambiguous candidates (1)
131-132 I2 --- r_SpT [1/60]? Reference for SpT (see refs.dat file)
134-135 I2 --- r_RVel [1/53]? Reference for RVel (see refs.dat file)
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Note (1): List of associations in ambiguous cases with their relative
probabilities (%) between parentheses.
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- Gaia Gaia DR2 identifier
21- 25 A5 --- Assoc Association ID as in Table 1 (1)
27- 31 F5.1 arcsec Sep [0.6/116]? Separation between
component and host (2)
33- 34 I2 h RAh [0/23] Hour of Right Ascension (J2000) (G1)
36- 37 I2 min RAm Minute of Right Ascension (J2000)
39- 44 F6.3 s RAs Second of Right Ascension (J2000)
46 A1 --- DE- Sign of the Declination (J2000)(G1)
47- 48 I2 deg DEd Degree of Declination (J2000) (G1)
50- 51 I2 arcmin DEm Arcminute of Declination (J2000)
53- 57 F5.2 arcsec DEs Arcsecond of Declination (J2000)
59- 65 F7.2 mas/yr pmRA [-202/239] Proper motion along RA times cos(DE)
67- 70 F4.2 mas/yr e_pmRA [0.03/3.3] Uncertainty in pmRA
72- 78 F7.2 mas/yr pmDE [-152/103] Proper motion along DE
80- 83 F4.2 mas/yr e_pmDE [0.04/2] Uncertainty in pmDE
85- 89 F5.2 mas plx [6/50.5] Parallax
91- 94 F4.2 mas e_plx [0.02/2] Uncertainty in plx
96-100 F5.1 km/s RVel [-42/45.1]? Radial velocity
102-105 F4.1 km/s e_RVel [0.2/10.1]? Uncertainty in RVel
106 A1 --- f_RVel [*] Flag on RVel (3)
--------------------------------------------------------------------------------
Note (1): All entries with an association identifier were recovered in this
work as a candidate member of this group.
Note (2): The host system is the first entry without a separation that
precedes a given entry.
Note (3):
* = A kinematic radial velocity derived from BANYAN Sigma by assuming
membership in a young association.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- f_Name Flag on Name (1)
3- 25 A23 --- Name Star name
27- 34 A8 --- SpT MK spectral type
35 A1 --- f_SpT [p] p: estimated from the absolute Gaia G-band
magnitude
37- 41 A5 --- Assoc Association ID as in table 1
43- 44 I2 h RAh [0/23] Hour of Right Ascension (J2000) (G1)
46- 47 I2 min RAm Minute of Right Ascension (J2000)
49- 53 F5.2 s RAs Second of Right Ascension (J2000)
55 A1 --- DE- Sign of the Declination (J2000)(G1)
56- 57 I2 deg DEd Degree of Declination (J2000) (G1)
59- 60 I2 arcmin DEm Arcminute of Declination (J2000)
62- 65 F4.1 arcsec DEs Arcsecond of Declination (J2000)
67 A1 --- l_Age Limit flag on Age
68- 74 A7 Myr Age Age range
76- 98 A23 --- Comov Comoving star name
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Note (1): Flag as follows:
n = New bona fide members
c = Comovers with known bona fide members
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Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Ref Reference code
5- 23 A19 --- BibCode Bibcode of the reference
25- 49 A25 --- Auth First author's name(s)
51- 84 A34 --- Comm Comment
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Global notes:
Note (G1): J2000 position at epoch 2015 from the Gaia DR2 catalog.
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History:
From electronic version of the journal
References:
Malo et al. Paper I. 2013ApJ...762...88M 2013ApJ...762...88M Cat. J/ApJ/762/88
Gagne et al. Paper II. 2014ApJ...783..121G 2014ApJ...783..121G Cat. J/ApJ/783/121
Malo et al. Paper III. 2014ApJ...788...81M 2014ApJ...788...81M Cat. J/ApJ/788/81
Malo et al. Paper IV. 2014ApJ...792...37M 2014ApJ...792...37M
Gagne et al. Paper V. 2015ApJ...798...73G 2015ApJ...798...73G Cat. J/ApJ/798/73
Artigau et al. Paper VI. 2015ApJ...806..254A 2015ApJ...806..254A
Gagne et al. Paper VII. 2015ApJS..219...33G 2015ApJS..219...33G Cat. J/ApJS/219/33
Boucher et al. Paper VIII. 2016ApJ...832...50B 2016ApJ...832...50B
Gagne et al. Paper IX. 2017ApJS..228...18G 2017ApJS..228...18G
Desrochers et al. Paper X. 2018ApJ...852...55D 2018ApJ...852...55D
Gagne et al. Paper XI. 2018ApJ...856...23G 2018ApJ...856...23G Cat. J/ApJ/856/23
Gagne et al. Paper XII. 2018ApJ...860...43G 2018ApJ...860...43G Cat. J/ApJ/860/43
Gagne et al. Paper XIII. 2018ApJ...862..138G 2018ApJ...862..138G This catalog
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 31-Jul-2019