J/ApJ/936/23 Young stellar objects Gaia EDR3 properties (Wang+, 2022)
Distributed YSOs in the Perseus Molecular Cloud from the Gaia and LAMOST
Surveys.
Wang X.-L., Fang M., Gao Yu, Zhang H.-X., Herczeg G.J., Ma H.-J., Chen En,
Zhou X.-Y.
<Astrophys. J., 936, 23 (2022)>
=2022ApJ...936...23W 2022ApJ...936...23W
ADC_Keywords: YSOs; Star Forming Region; Stars, pre-main sequence;
Proper motions; Parallaxes, trigonometric
Keywords: Pre-main sequence stars ; Spectroscopy ; Statistical parallax ;
Hertzsprung Russell diagram ; Two-color diagrams ; Star forming
regions ; Proper motions
Abstract:
Identifying the young optically visible population in a star-forming
region is essential for fully understanding the star formation event.
In this paper, we identify 211 candidate members of the Perseus
molecular cloud based on Gaia astrometry. We use LAMOST spectra to
confirm that 51 of these candidates are new members, bringing the
total census of known members to 856. The newly confirmed members are
less extincted than previously known members. Two new stellar
aggregates are identified in our updated census. With the updated
member list, we obtain a statistically significant distance gradient
of 4.84pc/deg from west to east. Distances and extinction corrected
color-magnitude diagrams indicate that NGC1333 is significantly
younger than IC348 and the remaining cloud regions. The disk fraction
in NGC1333 is higher than elsewhere, consistent with its youngest age.
The star formation scenario in the Perseus molecular cloud is
investigated and the bulk motion of the distributed population is
consistent with the cloud being swept away by the Per-Tau Shell.
Description:
We use the astrometric and photometric data from the Gaia survey (Gaia
EDR3) to identify new candidates in the Perseus molecular cloud.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 207 Properties of new members and candidates
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See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
VII/7 : Lynds' Catalogue of Dark Nebulae (LDN) (Lynds 1962)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
J/AJ/127/1131 : NGC 1333 low-mass stars infrared photometry (Wilking+, 2004)
J/ApJ/638/293 : 1.1mm sources in the Perseus Molecular Cloud (Enoch+, 2006)
J/ApJ/646/1009 : Structures of dust in Perseus molecular cloud (Kirk+, 2006)
J/AJ/134/2398 : Stellar SEDs in SDSS and 2MASS filters (Covey+, 2007)
J/ApJ/663/1149 : Spitzer survey of Serpens YSO population (Harvey+, 2007)
J/AJ/136/2413 : Galactic midplane Spitzer red sources (Robitaille+, 2008)
J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)
J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)
J/AJ/140/266 : NGC 1333 X-ray luminous YSOs properties (Winston+, 2010)
J/A+A/525/A71 : Atmospheric parameters for 1273 stars (Wu+, 2011)
J/A+A/537/A135 : X-ray view of IC348 (Stelzer+, 2012)
J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)
J/MNRAS/434/806 : Pre-main-sequence isochrones. II. SFR (Bell+, 2013)
J/ApJS/207/5 : YSOs in LDN 1641 with Hectochelle spectra (Fang+, 2013)
J/ApJS/205/5 : YSO candidates in nearby molecular clouds (Hsieh+, 2013)
J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)
J/ApJ/807/27 : IN-SYNC. III. Radial velocities IC348 stars (Cottaar+, 2015)
J/ApJ/799/136 : IN-SYNC. II. Candidate young stars NGC 1333 (Foster+, 2015)
J/AJ/150/40 : Spitzer c2d survey of clouds. XII. Perseus (Young+, 2015)
J/AJ/154/134 : Planetary-mass brown dwarfs in Taurus SFR (Esplin+, 2017)
J/AJ/153/188 : Spectroscopy of foreground population Orion A (Fang+, 2017)
J/AJ/153/214 : Star-forming potential in Perseus complex (Mercimek+, 2017)
J/AJ/156/271 : The stellar membership of the Taurus SFR (Luhman, 2018)
J/ApJ/865/73 : GOBELINS. V. Kinematics of Perseus (Ortiz-Leon+, 2018)
J/A+A/626/A80 : Census of Rho Oph cand members from GaiaDR2 (Canovas+, 2019)
J/AJ/157/196 : Close companions around young stars (Kounkel+, 2019)
J/A+A/639/A64 : Extended Meingast 1 source catalogue (Ratzenboeck+, 2020)
J/A+A/652/A2 : rho Oph region revisited with Gaia EDR3 (Grasser+, 2021)
J/MNRAS/503/3232 : Five new clustered groups of young stars (Pavlidou+, 2021)
J/A+A/649/A3 : Gaia EDR3 photometric passbands (Riello+, 2021)
J/AJ/164/57 : 810 candidate members 9 groups in Perseus (Kounkel+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 I18 --- Gaia Gaia EDR3 identifier [source_id]
20- 28 F9.6 deg RAdeg [50/58] Right Ascension, Gaia EDR3 (J2000)
30- 38 F9.6 deg DEdeg [30/34] Declination, Gaia EDR3 (J2000)
40- 43 F4.2 mas plx [2.72/3.8] Parallax, Gaia EDR3
45- 48 F4.2 mas/yr pmRA [2.51/8.68] Proper motion, Right Ascension,
Gaia EDR3
50- 55 F6.2 mas/yr pmDE [-11.12/-3.37] Proper motion, Declination,
Gaia EDR3
57- 60 A4 --- SpT Derived spectral type
62- 64 F3.1 --- e_SpT [0.1/1.6]? Uncertainty in SpT
66- 70 F5.2 mag Av [0.01/10.37]? Reddening, V-band, Section 4.2
72- 80 A9 --- Member Membership status
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 17-Jun-2024