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J/A+A/600/A106     RAVE open cluster pairs, groups and complexes (Conrad+, 2017)

A RAVE investigation on Galactic open clusters. II. Open cluster pairs, groups and complexes. Conrad C., Scholz R.-D., Kharchenko N.V., Piskunov A.E., Roeser S., Schilbach E., de Jong R.S., Schnurr O., Steinmetz M., Grebel E.K., Zwitter T., Bienayme O., Bland-Hawthorn J., Gibson B.K., Gilmore G., Kordopatis G., Kunder A., Navarro J.F., Parker Q., Reid W., Seabroke G., Siviero A., Watson F., Wyse R. <Astron. Astrophys. 600, A106 (2017)> =2017A&A...600A.106C (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Clusters, open ; Proper motions ; Radial velocities ; Space velocities ; Abundances, [Fe/H] Keywords: open clusters and associations: general - stars: kinematics and dynamics - Galaxy: kinematics and dynamics - stars: abundances - Galaxy: solar neighborhood Abstract: Galactic open clusters (OCs) mainly belong to the young stellar population in the Milky Way disk, but are there groups and complexes of OCs that possibly define an additional level in hierarchical star formation? Current compilations are too incomplete to address this question, especially regarding radial velocities (RVs) and metallicities ([M/H]). Here we present the parameters for the final working sample of 432 open clusters, as well as the mean parameters for the 19 detected potential open cluster groupings. Description: The presented tables summarize the parameters for the clusters and the mean values for the detected potential cluster groupings. The ages, distances and proper motions were taken from the Catalogue of Open Cluster Data (COCD; Kharchenko et al. 2005, Cat. J/A+A/438/1163, J/A+A/440/403), while additional radial velocities and metallicities were obtained from the Radial Velocity Experiment (RAVE; Kordopatis et al. 2013AJ....146..134K, Cat. III/272 ) and from the online compilation provided by Dias et al. (2002, See B/ocl). A description of the determination for the radial velocities and metallicities can be found in Conrad et al. 2014A&A...562A..54C. The potential groupings were identified using an adapted Friends-of-Friends algorithm with two sets of linking lengths, namely (100pc, 10km/s) and (100pc, 20km/s). The table clupar.dat (combining Tables A.1 and A.2 from the Appendix of our paper): Tables comprises the parameters collected for the final working sample of 432 clusters with available radial velocities, namely coordinates and proper motions in equatorial and galactic coordinates, distances, ages, metallicities, as well as Cartesian coordinates and velocities. The latter were computed through converting the spherical parameters to Cartesian space with the sun as point of origin. The tables grpar_10.dat and grpar_20.dat (listed as two parts in Table B.1 of the Appendix of our paper) contain the mean values for the identified potential open cluster groupings for two sets of linking lengths, 100pc and 10km/s (19 potential groupings) and 100pc and 20km/s (41 potential groupings), respectively. These were computed as simple mean, while the uncertainties were computed as simple rms. We list the counting number, the number of members, the COCD number and name for each member, The mean Cartesian coordinates and velocities, along with the uncertainties, the mean distances (with uncertainties), the mean logarithmic ages (with uncertainties) and the mean metallicities, where available (with uncertainties, if at least two measurement were used). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file clupar.dat 196 432 Input parameters and cartesian parameters for the final working sample (tables A1 and A2) tableb1.dat 153 60 Parameters for the identified OC groups for two sets of linking lengths, 100pc and 10km/s and 100pc and 20km/s grpar_10.dat 117 58 *Parameters for the identified OC groups for linking lenghts: 100pc and 10km/s (table B1) grpar_20.dat 117 121 *Parameters for the identified OC groups for linking lenghts: 100pc and 20km/s (table B1)
Note on grpar_*.dat: Original files of tableb1.dat.
See also: B/ocl : Optically visible open clusters and Candidates (Dias+ 2002-13) III/239 : CRVAD: Radial Velocities with Astrometric Data (Kharchenko+ 2004) III/254 : CRVAD2: 2nd Cat. of RV with Astrometric Data (Kharchenko+, 2007) III/272 : RAVE 4rd data release (Siebert+, 2013) J/A+A/438/1163 : Catalogue of Open Cluster Data (COCD) (Kharchenko+, 2005) J/A+A/440/403 : 109 new Galactic open clusters (Kharchenko+, 2005) J/A+A/562/A54 : Galactic open clusters in RAVE (Conrad+, 2014) Byte-by-byte Description of file: clupar.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq COCD sequential number 6- 23 A18 --- Name Name of the cluster 25- 30 F6.2 deg RAdeg Right ascension (J2000) 32- 37 F6.2 deg DEdeg Declination (J2000) 39- 44 F6.2 mas/yr pmRA Proper motion in right ascension 46- 49 F4.2 mas/yr e_pmRA Uncertainty for pmRA 51- 56 F6.2 mas/yr pmDE Proper motion in declination 58- 61 F4.2 mas/yr e_pmDE Uncertainty in pmDE 63- 68 F6.2 deg GLON Galactic longitude 70- 75 F6.2 deg GLAT Galactic latitude 77- 82 F6.2 mas/yr pmGLON Proper motion in Galactic longitude 84- 89 F6.2 mas/yr pmGLAT Proper motion in Galactic latitude 91- 96 F6.1 km/s RV Radial velocity 98-101 F4.1 km/s e_RV ?=-9.9 Uncertainty in RV 103-106 I4 pc d Distance 108-113 F6.3 kpc X Cartesian Coordinate in direction of Galactic Anticenter 115-119 F5.3 kpc e_X Uncertainty in X 121-126 F6.3 kpc Y Cartesian Coordinate in direction of Galactic rotation 128-132 F5.3 kpc e_Y Uncertainty in Y 134-139 F6.3 kpc Z Cartesian Coordinate in direction of Galactic northpole 141-145 F5.3 kpc e_Z Uncertainty in Z 147-151 F5.1 km/s U Cartesian Velocity in direction of Galactic Anticenter 153-156 F4.1 km/s e_U ?=-9.9 Uncertainty in U 158-162 F5.1 km/s V Cartesian Velocity in direction of Galactic rotation 164-167 F4.1 km/s e_V ?=-9.9 Uncertainty in V 169-173 F5.1 km/s W Cartesian Velocity in direction of Galactic northpole 175-178 F4.1 km/s e_W ?=-9.9 Uncertainty in W 180-183 F4.2 [yr] logt Logarithmic age 185-189 F5.2 [-] [M/H] ?=9.99 Metallicity 191-196 A6 --- r_[M/H] Reference for the metallicity (1)
Note (1): References as follows: A02 = Ann et al., 2002AJ....123..905A Cm85 = Cameron, 1985A&A...147...47C Cl89 = Claria et al., 1989A&AS...78..363C Cl91 = Claria et al., 1991MNRAS.249..193C Cl96 = Claria et al., 1996PASP..108..672C Cl03A = Claria et al., 2003A&A...399..543C, Cat. J/A+A/399/543 Cl03B = Claria et al., 2003A&A...409..541C, Cat. J/A+A/409/541 CC14 = Conrad et al., 2014A&A...562A..54C, Cat. J/A+A/562/A54 G00 = Gratton, 2000ASPC..198..225G Go00 = Gonzalez and Wallerstein, 2000AJ....119.1839G L94 = Luck, 1994ApJS...91..309L Ly81 = Lynga, The Catalogue of Open Star Clusters, 1981ADCBu...1...90L Ly84 = Lynga et al., 1984A&A...132...58L N80 = Nissen et al., 1980IAUS...85...51N Pa86 = Palous et al., 1986A&A...162...54P Pr05 = Parisiet al., 2005MNRAS.363.1247P Pn03 = Paunzen et al., 2003A&A...403..937P, Cat. J/A+A/403/937 Pi95 = Piatti et al., 1995AJ....110.2813P T97 = Twarog et al., 1997AJ....114.2556T
Byte-by-byte Description of file: tableb1.dat
Bytes Format Units Label Explanations
1 A1 --- n_Group [ab] Set of linking length (1) 3- 4 I2 --- Group Sequential number for our detected potential open cluster groupings 6- 7 I2 --- NMemb Number of members in the potential open cluster grouping 9- 13 I5 pc Xmean Mean Cartesian Coordinate in direction of Galactic Anticenter 15- 16 I2 pc e_Xmean Uncertainty in Xmean 18- 22 I5 pc Ymean Mean Cartesian Coordinate in direction of Galactic rotation 24- 25 I2 pc e_Ymean Uncertainty in Ymean 27- 30 I4 pc Zmean Mean Cartesian Coordinate in direction of Galactic northpole 32- 33 I2 pc e_Zmean Uncertainty in Zmean 35- 39 F5.1 km/s Umean Mean Cartesian Velocity in direction of Galactic Anticenter 41- 44 F4.1 km/s e_Umean Uncertainty in Umean 46- 50 F5.1 km/s Vmean Mean Cartesian Velocity in direction of Galactic rotation 52- 55 F4.1 km/s e_Vmean Uncertainty in Vmean 57- 61 F5.1 km/s Wmean Mean Cartesian Velocity in direction of Galactic northpole 63- 65 F3.1 km/s e_Wmean Uncertainty in Wmean 67- 70 I4 pc Dmean Mean Distance 72- 73 I2 pc e_Dmean Uncertainty in Dmean 75- 78 F4.2 [yr] logtmean Mean logarithmic age 80- 83 F4.2 [yr] e_logtmean Uncertainty in logtmean 85- 89 F5.2 [-] [M/H]mean ?=9.99 Mean metallicity 91- 94 F4.2 [-] e_[M/H]mean ?=9.99 Uncertainty in [M/H]mean 96 I1 --- o_[M/H]mean Numer of values used for [M/H]mean 98-153 A56 --- Memb COCD sequential number of the cluster grouping members, separated by comma
Note (1): Sets of linking length as follows: a = 100pc and 10km/s b = 100pc and 20km/s
Byte-by-byte Description of file: grpar_10.dat grpar_20.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Group ? Sequential number for our detected potential open cluster groupings 4- 5 I2 --- NMemb ? Number of members in the potential open cluster grouping 7- 10 I4 --- Seq COCD Sequential number of the Cluster grouping members 12- 28 A17 --- Name Name of the Cluster grouping members 30- 34 I5 pc Xmean ? Mean Cartesian Coordinate in direction of Galactic Anticenter 36- 37 I2 pc e_Xmean ? Uncertainty in Xmean 39- 43 I5 pc Ymean ? Mean Cartesian Coordinate in direction of Galactic rotation 45- 46 I2 pc e_Ymean ? Uncertainty in Ymean 48- 51 I4 pc Zmean ? Mean Cartesian Coordinate in direction of Galactic northpole 53- 54 I2 pc e_Zmean ? Uncertainty in Zmean 56- 60 F5.1 km/s Umean ? Mean Cartesian Velocity in direction of Galactic Anticenter 62- 65 F4.1 km/s e_Umean ? Uncertainty in Umean 67- 71 F5.1 km/s Vmean ? Mean Cartesian Velocity in direction of Galactic rotation 73- 76 F4.1 km/s e_Vmean ? Uncertainty in Vmean 78- 82 F5.1 km/s Wmean ? Mean Cartesian Velocity in direction of Galactic northpole 84- 86 F3.1 km/s e_Wmean ? Uncertainty in Wmean 88- 91 I4 pc Dmean ? Mean Distance 93- 94 I2 pc e_Dmean ? Uncertainty in Dmean 96- 99 F4.2 Gyr AGEmean ? Mean logarithmic age 101-104 F4.2 Gyr e_AGEmean ? Uncertainty in AGEmean 106-110 F5.2 [-] [M/H]mean ? Mean metallicity (NULL value: 9.99) 112-115 F4.2 [-] e_[M/H]mean ? Uncertainty in [M/H]mean (NULL value: 9.99) 117 I1 --- o_[M/H]mean ? Numer of values used for [M/H]mean
Acknowledgements: Ralf Scholz, rdscholz(at)aip.de References: Conrad et al., Paper I, 2014A&A...562A..54C, Cat. J/A+A/562/A54
(End) Patricia Vannier [CDS] 31-Jan-2017
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