J/ApJS/268/46 Kinematics of young open clusters & O-B2-type stars (Liu+, 2023)
Kinematics of the local spiral structure revealed by young stars in Gaia DR3.
Liu D., Xu Ye, Hao C., Bian S., Lin Z., Li Y., Li J.
<Astrophys. J. Suppl. Ser., 268, 46 (2023)>
=2023ApJS..268...46L 2023ApJS..268...46L
ADC_Keywords: Clusters, open; Radial velocities; Proper motions; Stars, OB;
Parallaxes, trigonometric; Effective temperatures; Optical
Keywords: Galaxy kinematics ; Open star clusters ; OB stars
Abstract:
Using young open clusters and O-B2-type stars in Gaia Data Release 3,
we investigate the kinematics of the local spiral structure. In
general, the young sources in the outer spiral arms may present larger
peculiar motions than those in the inner spiral arms. The young open
clusters appear to have smaller peculiar motions than the O-B2-type
stars, and the sources in both the Perseus and Local Arms may show an
inward motion toward the Galactic center and rotate slower than
Galactic rotation. Meanwhile, the sources in the Carina Arm may move
in the opposite direction from the Sun to the Galactic center and
rotate marginally faster than Galactic rotation. In addition, using
young open clusters and O-B2-type stars, we have improved the distance
estimations of kinematic methods for several regions near the Sun.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 177 4871 Summary of the mean parameters of the cluster sample
table2.dat 141 1135 Summary of the parameters of the O-B2-type stars
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/A+A/569/A125 : Spiral structure of the Milky Way (Hou+, 2014)
J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)
J/A+A/619/A155 : Open cluster kinematics with Gaia DR2 (Soubiran+, 2018)
J/A+A/616/L15 : Parallaxes and Proper Motions of OB stars (Xu+, 2018)
J/MNRAS/486/5726 : 80 young open clusters from Gaia DR2 (Dias+, 2019)
J/ApJ/885/131 : High-mass SFR plx & proper motion with VLBI (Reid+, 2019)
J/A+A/652/A102 : 3794 open clusters parameters (Hao+, 2021)
J/A+A/645/L8 : Plx & proper motions of OB stars from Gaia EDR3 (Xu+, 2021)
J/A+A/661/A118 : New open clusters found with OCfinder (Castro-Ginard+, 2022)
J/A+A/668/A13 : Open clusters housing classical Cepheids (Hao+, 2022)
J/A+A/660/A4 : Gaia EDR3 new Galactic open clusters (Hao+, 2022)
J/ApJS/265/12 : Neighboring open clusters with Gaia DR3 (Qin+, 2023)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Cluster name
23- 25 I3 --- N [6/739] Number of cluster members
30- 36 F7.3 deg RAdeg Mean right ascension of members (ICRS) at
Ep=2016.0
41- 47 F7.3 deg DEdeg Mean declination of members (ICRS) at Ep=2016.0
53- 58 F6.3 mas plx [0.04/12]? Mean parallax of members
65- 69 F5.3 mas e_plx [0.002/0.4] Standard deviation of parallax of
members
74- 80 F7.3 mas/yr pmRA [-33/36.3] Mean proper motion along RA* of
members
87- 91 F5.3 mas/yr e_pmRA [0.003/0.5] Standard deviation of pmRA of
members
96- 102 F7.3 mas/yr pmDE [-49.1/44] Mean proper motion along Decl. of
members
109- 113 F5.3 mas/yr e_pmDE [0.003/0.5] Standard deviation of pmDE of
members
119- 124 F6.1 km/s RV [-196/273]? Mean radial velocity
130- 135 F6.1 km/s e_RV [0.1/4664]? Uncertainty of RV
141- 143 I3 --- o_RV [0/270] Number of member stars with radial
velocity
149- 153 F5.2 [yr] logt [5.7/10.1] Logarithm of age
166- 177 A12 --- Ref Reference (1)
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Note (1): References as follows:
Cantat2018 = 2018A&A...618A..93C 2018A&A...618A..93C
Cantat2019 = 2019A&A...624A.126C 2019A&A...624A.126C
Castro2018 = 2018A&A...618A..59C 2018A&A...618A..59C
Castro2019 = 2019A&A...627A..35C 2019A&A...627A..35C
Castro2022 = Castro-Ginard+ 2022, J/A+A/661/A118
Dias2002 = 2002A&A...389..871D 2002A&A...389..871D
Ferreira2020 = 2020MNRAS.496.2021F 2020MNRAS.496.2021F
Hao2022a = Hao+ 2022, J/A+A/660/A4
Hao2022b = Hao+ 2022, J/A+A/668/A13
He2021 = 2021RAA....21...93H 2021RAA....21...93H
LP2019 = 2019ApJS..245...32L 2019ApJS..245...32L
Qin2023 = Qin+ 2023, J/ApJS/265/12
Scholz2015 = 2015A&A...581A..39S 2015A&A...581A..39S
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia Gaia DR3 identifier [source_id]
24- 31 F8.4 deg RAdeg Right ascension (ICRS) at Epoch=2016.0 (ra)
36- 43 F8.4 deg DEdeg Declination (ICRS) at Epoch=2016.0 (dec)
50- 54 F5.3 mas plx [0.13/3] Gaia DR3 parallax (parallax)
61- 65 F5.3 mas e_plx [0.009/0.2] Uncertainty in plx (parallax_error)
70- 76 F7.3 mas/yr pmRA [-18.5/4.4] Proper motion in RA* direction
(pmra)
83- 87 F5.3 mas/yr e_pmRA [0.007/0.2] Uncertainty in pmRA (pmra_error)
92- 98 F7.3 mas/yr pmDE [-12.4/16.2] Proper motion in DEC direction
(pmdec)
105- 109 F5.3 mas/yr e_pmDE [0.009/0.2] Uncertainty in pmDE (pmdec_error)
115- 120 F6.1 km/s RV [-359/213] Radial velocity (radial_velocity)
128- 131 F4.1 km/s e_RV [1/40] Uncertainty in Radial velocity
(radialvelocityerror)
137- 141 I5 K Teff [20000/54850] Effective temperature (teff_esphs)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 12-Jan-2024