J/ApJ/867/93 Kinematic data of YNMGs from RAVE & Gaia (Ramirez-Preciado+, 2018)
Kinematic identification of young nearby moving groups from a sample of
chromospherically active stars in the RAVE catalog.
Ramirez-Preciado V.G., Roman-Zuniga C.G., Aguilar L., Suarez G., Downes J.J.
<Astrophys. J., 867, 93 (2018)>
=2018ApJ...867...93R 2018ApJ...867...93R
ADC_Keywords: Photometry, VRI; Proper motions; Radial velocities; Stars, ages;
Stars, masses
Keywords: stars: activity; stars: chromospheres; stars: kinematics and dynamics
Abstract:
The purpose of this study is the identification of young
(1<age<100Myr), nearby (d≤100pc) moving groups (YNMGs) through their
kinematic signature. YNMGs could be the result of the recent dispersal
of young embedded clusters, such that they still represent
kinematically cold groups, carrying the residual motion of their
parental cloud. Using the fact that a large number (∼14000) of the
RAVE sources with evidence of chromospheric activity also present
signatures of stellar youth, we selected a sample of solar-type
sources with the highest probability of chromospheric activity to look
for common kinematics. We made use of radial velocity information from
RAVE and astrometric parameters from GAIA DR2 to construct a 6D
position-velocity vector catalog for our full sample. We developed a
method based on the grouping of stars with similar orientation of
their velocity vectors, which we call the Cone Method Sampling. Using
this method, we detected 646 sources with high significance in the
velocity space, with respect to the average orientation of artificial
distributions made from a purely Gaussian velocity ellipsoid with null
vertex deviation. We compared this sample of highly significant
sources with a catalog of YNMGs reported in previous studies, which
yield 75 confirmed members. From the remaining sample, about 50% of
the sources have ages younger than 100Myr, which indicate they are
highly probable candidates to be new members of identified or even
other YNMGs in the solar neighborhood.
Description:
This catalogue contains parameters for chromospherically active star
(CAS) from the RAVE catalogue.
The RAVE DR5 catalog (III/279) provides radial velocities, and
effective temperatures for all sources in our sample. These are
complemented with astrometric parameters obtained from GAIA DR2
(I/345), and photometry from APASS DR9 (II/336).
The ages and the moving group memberships are estimated by the
authors.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 117 56 Main parameters for the members of young nearby
moving groups (YNMGs) detected with the
Cone Method Sampling (CMS)
table2.dat 107 278 Main parameters for the candidates detected with
the CMS
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)
III/279 : RAVE 5th data release (Kunder+, 2017)
I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer- Jones+, 2018)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/other/ARA+A/42.685 : Young stars near the Sun (Zuckerman+, 2004)
J/AJ/130/188 : Young stars in Trumpler 37 & NGC7160 (Sicilia- Aguilar+, 2005)
J/A+A/460/695 : Search for Associations Containing Young stars (Torres+, 2006)
J/A+A/508/833 : SACY III. Li abundances (da Silva+, 2009)
J/AJ/140/184 : RAVE double-lined spectroscopic binaries (Matijevic+, 2010)
J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)
J/MNRAS/429/903 : New brown dwarf discs in Upper Scorpius (Dawson+, 2013)
J/MNRAS/431/1005 : IC 2391 and Argus young stars (de Silva+, 2013)
J/ApJ/762/88 : Young stellar kinematic group candidate members (Malo+, 2013)
J/A+A/568/A26 : SACY. V. Multiple systems (Elliott+, 2014)
J/AJ/147/146 : Spectroscopy of Tuc-Hor candidate members (Kraus+, 2014)
J/AJ/147/85 : Solar neighborhood. XXXIII. 45 M dwarfs (Riedel+, 2014)
J/MNRAS/452/173 : Nearby young stars in Northern hemisphere (Binks+, 2015)
J/A+A/575/A4 : Activity & accretion in γ Vel and Cha I (Frasca+, 2015)
J/ApJS/219/33 : BANYAN. VII. Candidate YMG members from BASS (Gagne+, 2015)
J/MNRAS/447/1267 : Low-mass members of the Octans association (Murphy+, 2015)
J/A+A/581/A52 : Gaia-ESO Survey: Hα emission stars cat. (Traven+, 2015)
J/AJ/153/95 : Catalog of Suspected Nearby Young Stars (Riedel+, 2017)
J/AJ/154/14 : Low-mass stars in 25 Ori group and Orion OB1a (Suarez+, 2017)
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- 2MASS 2MASS identifier (HHMMSSss+DDMMSSs; J2000)
18- 19 I2 h RAh Hour of Right Ascension (J2000)
21- 22 I2 min RAm Minute of Right Ascension (J2000)
24- 28 F5.2 s RAs Second of Right Ascension (J2000)
30 A1 --- DE- Sign of the Declination (J2000)
31- 32 I2 deg DEd Degree of Declination (J2000)
34- 35 I2 arcmin DEm Arcminute of Declination (J2000)
37- 40 F4.1 arcsec DEs Arcsecond of Declination (J2000)
42- 47 F6.3 mag Vmag [8.8/15.4] APASS DR9 (II/336) V band magnitude
49- 54 F6.3 mag Jmag [7/12] 2MASS (II/246) J band magnitude
56- 62 F7.3 mas/yr pmRA [-75.5/96.3] GAIA DR2 (I/345) proper motion
along RA
64- 71 F8.3 mas/yr pmDE [-146.1/68.8] GAIA DR2 (I/345) proper motion
along DE
73- 80 F8.3 km/s RVel [-109/84] RAVE DR5 (III/279) radial velocity
82- 87 F6.1 K Teff [3200/6000] RAVE DR5 (III/279)
effective temperature
89- 93 F5.3 Lsun Lbol [0.02/2.5] Bolometric luminosity (1)
95- 99 F5.3 Msun Mass [0.3/1.5] Mass (1)
101-107 F7.4 Myr Age [0.8/85.6] Age (1)
109-117 A9 --- YNMG Young, nearby moving group member;
only for Table 1 (2)
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Note (1): Estimated with a method like Suarez+ (2017, J/AJ/154/14).
Note (2): Comparison with catalog provided by M. Rodriguez et al. in prep.
Young nearby moving group as follows:
CAR = Carina Association (10 occurrences)
ABDMG = AB Dor Moving Group (7 occurrences)
ARG = Argus Association (7 occurrences)
THA = Tucana Horologium Association (6 occurrences)
COL = Columba Association (5 occurrences)
Ech = eta Chameleontis Association (3 occurrences)
LCC = Lower Centaurus Crux (2 occurrences)
Octans = Octans Association (2 occurrences)
BPMG = beta Pic Moving Group (1 occurrence)
Ambiguous = stars with ambiguous membership (2 occurrences)
Unknwon = stars with no established membership to a YNMG (11 occurrences).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 11-Oct-2019