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J/MNRAS/413/1024 Deep proper-motion survey of Blanco 1 (Platais+, 2011)
A deep proper-motion survey of the nearby open cluster Blanco 1. Platais I., Girard T.M., Vieira K., Lopez C.E., Loomis C., Mclean B.J., Pourbaix D., Moraux E., Mermilliod J.-C., James D.J., Cargile P.A., Barnes S.A., Castillo D.J. <Mon. Not. R. Astron. Soc., 413, 1024-1035 (2011)> =2011MNRAS.413.1024P
ADC_Keywords: Clusters, open ; Proper motions Keywords: astrometry - stars: kinematics and dynamics - open clusters and associations: individual: Blanco 1 Abstract: We provide two comprehensive catalogues of positions and proper motions in the area of open cluster Blanco 1. The main catalogue, CtlgM (table1), contains 6271 objects down to V∼18.5 and covers a circular ∼11deg2 area. The accuracy of CtlgM proper motions, at about 0.3-0.5mas/yr for well-measured stars, permits an excellent segregation between the cluster and field stars. Description: Nearly all photographic imaging for the astrometry of Blanco 1 has been obtained at the Cesco Observatory in El Leoncito, Argentina, with the 51-cm double astrograph (scale 55.1arcsec/mm). The earliest epoch of that plate material dates back to 1967, while the most recent CCD observations were obtained in 2007. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 101 6271 Main astrometric catalog CtlgM table3.dat 95 11598 Deep astrometric catalog CtlgD table4.dat 21 20 Cross-identifications with Eggen (1970ApJ...161..159E) table5.dat 16 23 Cross-identifications with Perry et al. (1978PASP...90...81P) table6.dat 13 262 Cross-ids with de Epstein & Epstein (1985AJ.....90.1211D) table7.dat 13 139 Cross-ids with Westerlund et al. (Table 3-4, 1988A&AS...76..101W) table8.dat 26 409 *Cross-ids with Moraux et al. (2007A&A...471..499M) table9.dat 21 148 Cross-ids with Mermilliod et al. (Table 1, 2008A&A...485...95M) table10.dat 31 44 Cross-ids with Micela et al. (Table 4, 1999A&A...344...83M) table11.dat 32 42 Cross-ids with Pillitteri et al. (Table A.1., 2004A&A...421..175P)
Note on table8.dat: original file in J/A+A/471/499 is listed as lmscand.dat
See also: J/A+AS/76/101 : UBV and uvbyb in zeta Scl cluster (Westerlund+, 1988) J/A+A/421/175 : XMM sources in Blanco 1 (Pillitteri+, 2004) J/A+A/471/499 : Low-mass stars and brown dwarfs in Blanco 1 (Moraux+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 5 I5 --- CtlgM [1/6271] Sequential identifier 6- 11 F6.2 mag Vmag Photographic V-magnitude 12- 23 F12.7 deg RAdeg Right ascension (J2000), epoch 2000.0 24- 35 F12.7 deg DEdeg Declination (J2000), epoch 2000.0 36- 42 F7.1 mas/yr pmRA Proper motion in RA multiplied by cos(DE) 43- 47 F5.1 mas/yr e_pmRA Standard error of proper motion in RA 48- 54 F7.1 mas/yr pmDE Proper motion in Dec 55- 59 F5.1 mas/yr e_pmDE Standard error of proper motion in DE 60- 62 I3 % Prob [0/99] Cluster membership probability 63- 65 I3 --- Npos [4/64] Number of used positions 66- 68 I3 --- Ndel [0/7] Number of deleted positions 69- 71 I3 yr DEp [22/45] Maximum span of epochs 72- 83 F12.8 rad Xt Tangential coordinate along RA direction 84- 95 F12.8 rad Yt Tangential coordinate along Dec direction 97-101 I5 --- CtlgD [1/11598]? Cross-identification with table3
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 5 I5 --- CtlgD [1/11598] Sequential identifier (1) 6- 11 F6.2 mag Vmag Photographic V-magnitude 12- 23 F12.7 deg RAdeg Right ascension (J2000), epoch 2000.0 24- 35 F12.7 deg DEdeg Declination (J2000), epoch 2000.0 36- 42 F7.1 mas/yr pmRA Proper motion in RA multiplied by cos(Dec) 43- 47 F5.1 mas/yr e_pmRA Standard error of proper motion in RA 48- 54 F7.1 mas/yr pmDE Proper motion in Dec 55- 59 F5.1 mas/yr e_pmDE Standard error of proper motion in Dec 60- 62 I3 % Prob [0/99] Cluster membership probability 63- 65 I3 --- Npos [3/12] Number of used positions 66- 68 I3 --- Ndel [0/3] Number of deleted positions 69- 71 I3 yr DEp [22/45] Maximum span of epochs 72- 83 F12.8 rad Xt Tangential coordinate along RA direction 84- 95 F12.8 rad Yt Tangential coordinate along Dec direction
Note (1): in order not to mix up the numbering systems, anywhere else a composite StarID+100000 number is used.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 12 A12 --- HD/CoD HD or CoD designation (1) 13- 18 I6 --- CtlgM Cross-identification with CtlgM 20- 21 I2 % Prob [0/99] Cluster membership probability
Note (1): star marked as HD 224949 is actually HD 224948.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD number 9- 13 I5 --- CtlgM Cross-identification with CtlgM 15- 16 I2 % Prob [0/99] Cluster membership probability
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 3 I3 --- ZS Star number from de Epstein & Epstein (1985AJ.....90.1211D), <Cl* Blanco 1 ZS NNNa> in Simbad (1) 5- 10 I6 --- Ctlg Cross-identification with CtlgM or CtlgD (G1) 12- 13 I2 % Prob [0/99]?=-1 Cluster membership probability
Note (1): star 30a is re-assigned as star 262. Star 133 is missing in our catalogs.
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 3 I3 --- WGL Star number from Westerlund et al. (1988A&AS...76..101W), <Cl* Blanco 1 WGL NNN> in Simbad 6- 10 I5 --- CtlgM Cross-identification with CtlgM 11- 13 I3 % Prob [0/99] Cluster membership probability
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name Object name from Moraux et al. (2007A&A...471..499M), <[MBS2007b] FNN-NN-NNN> in Simbad 12- 17 I6 --- Ctlg Cross-identification with CtlgM or CtlgD (G1) 18- 20 I3 % Prob [0/99] Cluster membership probability 21- 26 F6.2 mag Vmag Photographic V-magnitude
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 4 I4 --- MPJ Star number from Mermilliod et al. (2008A&A...485...95M), <Cl* Blanco 1 MPJ NNN> in Simbad 7- 11 I5 --- CtlgM Cross-identification with CtlgM 12- 14 I3 % Prob [0/99] Cluster membership probability 15- 21 F7.2 km/s RV Mean radial velocity (Mermilliod et al., 2008A&A...485...95M)
Byte-by-byte Description of file: table10.dat
Bytes Format Units Label Explanations
1- 3 I3 --- BlX BLX source number from Micela et al. (1999A&A...344...83M), <BlX NN> in Simbad 5- 10 I6 --- Ctlg Cross-identification with CtlgM or CtlgD (G1) 11- 16 F6.2 mag Vmag Photographic V magnitude 17- 19 I3 % Prob [0/99] Cluster membership probability 20- 25 F6.1 arcsec dRA Difference "Micela-Ctlg" in RA*cos(Dec) 26- 31 F6.1 arcsec dDE Difference "Micela-Ctlg" in DE
Byte-by-byte Description of file: table11.dat
Bytes Format Units Label Explanations
2- 4 I3 --- Opt Source number from Pillitteri et al. (2004A&A...421..175P), <[PMS2004] Opt NNN> in Simbad 6- 11 I6 --- Ctlg Cross-identification with CtlgM or CtlgD (G1) 12- 17 F6.2 mag Vmag Photographic V magnitude 18- 20 I3 % Prob [0/99] Cluster membership probability 21- 26 F6.1 arcsec dRA Difference "Pillitteri-Ctlg" in RA*cos(DE) 27- 32 F6.1 arcsec dDE Difference "Pillitteri-Ctlg" in DE
Global notes: Note (G1): For CtlgM, No. 1 to 6271; for CtlgD No. 100001 to 111598.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 14-Nov-2011
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