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 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:
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FileName Lrecl Records Explanations
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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 1970ApJ...161..159E)
table5.dat 16 23 Cross-identifications with Perry et al.
(1978PASP...90...81P 1978PASP...90...81P)
table6.dat 13 262 Cross-ids with de Epstein & Epstein
(1985AJ.....90.1211D 1985AJ.....90.1211D)
table7.dat 13 139 Cross-ids with Westerlund et al.
(Table 3-4, 1988A&AS...76..101W 1988A&AS...76..101W)
table8.dat 26 409 *Cross-ids with Moraux et al.
(2007A&A...471..499M 2007A&A...471..499M)
table9.dat 21 148 Cross-ids with Mermilliod et al.
(Table 1, 2008A&A...485...95M 2008A&A...485...95M)
table10.dat 31 44 Cross-ids with Micela et al.
(Table 4, 1999A&A...344...83M 1999A&A...344...83M)
table11.dat 32 42 Cross-ids with Pillitteri et al.
(Table A.1., 2004A&A...421..175P 2004A&A...421..175P)
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Note on table8.dat: original file in J/A+A/471/499 is listed as lmscand.dat
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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
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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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
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Note (1): in order not to mix up the numbering systems, anywhere else a
composite StarID+100000 number is used.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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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
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Note (1): star marked as HD 224949 is actually HD 224948.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
9- 13 I5 --- CtlgM Cross-identification with CtlgM
15- 16 I2 % Prob [0/99] Cluster membership probability
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- ZS Star number from de Epstein & Epstein
(1985AJ.....90.1211D 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
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Note (1): star 30a is re-assigned as star 262. Star 133 is missing in our
catalogs.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- WGL Star number from Westerlund et al.
(1988A&AS...76..101W 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
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Object name from Moraux et al.
(2007A&A...471..499M 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
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- MPJ Star number from Mermilliod et al.
(2008A&A...485...95M 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 2008A&A...485...95M)
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- BlX BLX source number from Micela et al.
(1999A&A...344...83M 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
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Byte-by-byte Description of file: table11.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- Opt Source number from Pillitteri et al.
(2004A&A...421..175P 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
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Global notes:
Note (G1): For CtlgM, No. 1 to 6271; for CtlgD No. 100001 to 111598.
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History:
From electronic version of the journal
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(End) Patricia Vannier [CDS] 14-Nov-2011