J/A+A/619/A155 Open cluster kinematics with Gaia DR2 (Soubiran+, 2018)
Open cluster kinematics with Gaia DR2.
Soubiran C., Cantat-Gaudin T., Romero-Gomez M., Casamiquela L., Jordi C.,
Vallenari A., Antoja T., Balaguer-Nunez L., Bossini D., Bragaglia A.,
Carrera R., Castro-Ginard A., Figueras F., Heiter U., Katz D.,
Krone-Martins A., Le Campion J.-F., Moitinho A., Sordo R.
<Astron. Astrophys. 619, A155 (2018)>
=2018A&A...619A.155S 2018A&A...619A.155S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Radial velocities
Keywords: stars: kinematics and dynamics - Galaxy: kinematics and dynamics -
open clusters and associations: general
Abstract:
The distribution of open clusters in the 6D phase space is revisited
with Gaia DR2. The weighted mean radial velocity (RV) of open clusters
was determined, using the most probable members available from a
previous astrometric investigation that also provided mean parallaxes
and proper motions. Those parameters, all derived from Gaia DR2 only,
were combined to provide the 6D phase-space information of 861
clusters.
Description:
Mean radial velocities and 6D phase-space coordinates are presented
for 861 open clusters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
oc.dat 264 861 Open cluster velocities
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/A+A/618/A93 : Gaia DR2 open clusters in the Milky Way (Cantat-Gaudin+, 2018)
Byte-by-byte Description of file: oc.dat
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Bytes Format Units Label Explanations
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2- 21 A20 --- ID Name (1)
23- 42 A20 --- ID2 Alternate name resolved by Simbad
44- 50 F7.3 deg RAdeg Right ascension (ICRS) (1)
52- 58 F7.3 deg DEdeg Declination (ICRS) (1)
61- 67 F7.1 pc dmode Most probable distance (1)
69- 71 I3 --- Nmemb Number of star members with a Gaia RV
73- 75 I3 --- Nsele Number of selected members in the mean RV
78- 84 F7.2 km/s RV Mean RV
87- 93 F7.2 km/s s_RV Standard deviation of RV
96-102 F7.2 km/s e_RV Uncertainty of RV
104-111 F8.1 pc X X Position in Cartesian Galactic coordinates
113-120 F8.1 pc Y Y Position in Cartesian Galactic coordinates
122-129 F8.1 pc Z Z Position in Cartesian Galactic coordinates
131-138 F8.1 pc e_X Uncertainty of X
140-147 F8.1 pc e_Y Uncertainty of Y
149-156 F8.1 pc e_Z Uncertainty of Z
159-165 F7.2 km/s U U Velocity in Cartesian Galactic coordinates
168-174 F7.2 km/s V V Velocity in Cartesian Galactic coordinates
177-183 F7.2 km/s W W Velocity in Cartesian Galactic coordinates
186-192 F7.2 km/s e_U Uncertainty of U
195-201 F7.2 km/s e_V Uncertainty of V
204-210 F7.2 km/s e_W Uncertainty of W
213-219 F7.2 km/s Vr Radial velocity in Spherical Galactic system
222-228 F7.2 km/s Vphi Azimutal velocity in Spherical Galactic system
231-237 F7.2 km/s Vz Vertical velocity in Spherical Galactic system
240-246 F7.2 km/s e_Vr Uncertainty of Vr
249-255 F7.2 km/s e_Vphi Uncertainty of Vphi
258-264 F7.2 km/s e_Vz Uncertainty of Vz
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Note (1): From Cantat-Gaudin et al. 2018, Cat. J/A+A/618/A93.
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Acknowledgements:
Caroline Soubiran, caroline.soubiran(at)u-bordeaux.fr
(End) C. Soubiran [Lab. d'Astrophys. Bordeaux], P. Vannier [CDS] 24-Sep-2018