J/A+A/416/125 RI photometry in alpha Per and Pleiades (Deacon+, 2004)
Proper motion surveys of the young open clusters Alpha Persei and the Pleiades.
Deacon N.R., Hambly N.C.
<Astron. Astrophys., 416, 125-136 (2004)>
=2004A&A...416..125D 2004A&A...416..125D
ADC_Keywords: Clusters, open; Stars, dwarfs ; Photometry, photographic
Keywords: astrometry - stars: low mass, brown dwarfs -
Galaxy: open clusters and associations: individual: Alpha Per, Pleiades
Description:
Photographic astrometry (proper motions and accurate positions),
photometry (in the photographic R and I passbands) and membership
probabilities for high probability proper motion members of the
clusters Alpha Persei and The Pleiades are presented, along with
cross-identifications with names from previously known members in
the compilation of Prosser & Stauffer (The Stauffer & Prosser Open
Cluster Catalogue, priv.comm.) and their corresponding proper motion
membership probabilities according to our study.
The SuperCOSMOS facility at the Royal Observatory Edinburgh has (using
plates from the United Kingdom Schmidt Telescope) produced complete
southern sky surveys in BJ, R and I with an additional second epoch R
survey. These surveys are now publicly available (Hambly et al.
2001MNRAS.326.1279H 2001MNRAS.326.1279H). The scanning program has now moved on to the
northern hemisphere, using film and glass copies of plates taken by
the Oschin Schmidt Telescope on Mount Palomar, California. These data
will soon be publicly available.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 48 302 High probability members of Alpha Persei
tableb2.dat 18 94 Membership probability of previously known
alpha Per stars
tableb3.dat 48 916 High probability members of the Pleiades
tableb4.dat 18 719 Membership probability of previously known Pleiades
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See also:
I/68 : Positions and Proper Motions in alpha Per cluster (Fresneau, 1980)
I/163 : US Naval Observatory Pleiades Catalog (Van Flandern 1969)
I/258 : Pleiades positions and proper motions (Wang+, 1996)
J/AN/319/201 : Alpha Per cluster low-mass members. I. (Prosser+, 1998)
J/AN/319/215 : Alpha Per cluster low-mass members. II. (Prosser+, 1998)
J/A+A/320/74 : Radial velocities of Pleiades members (Mermilliod+ 1997)
J/A+A/332/575 : Pleiades member list (Belikov+ 1998)
J/A+AS/100/607 : Very low mass proper motion members in Pleiades (Hambly+ 1993)
Byte-by-byte Description of file: tableb1.dat tableb3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq ? Sequence number in this survey
5- 6 I2 h RAh Right ascension (J2000.0)
8- 9 I2 min RAm Right ascension (J2000.0)
11- 15 F5.2 s RAs Right ascension (J2000.0)
17 A1 --- DE- Declination sign (J2000.0)
18- 19 I2 deg DEd Declination (J2000.0)
21- 22 I2 arcmin DEm Declination (J2000.0)
24- 28 F5.2 arcsec DEs Declination (J2000.0)
30- 34 F5.3 --- Prob Membership probability
36- 41 F6.3 mag Rmag Photographic R magnitude
43- 48 F6.3 mag Imag Photographic I magnitude
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Byte-by-byte Description of file: tableb2.dat tableb4.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Name of star from previous survey (1)
10- 14 F5.3 --- Prob Membership probability from this survey
16- 18 I3 --- Seq ? Sequence number in this survey
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Note (1): Identifications are taken from the Stauffer & Prosser
Catalogue of Open Cluster Data (J. Stauffer, private communication).
Many stars have alternative names; for comprehensive
cross-identifications, see Stauffer & Prosser.
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Acknowledgements:
We thank John Stauffer for providing a machine-readable copy of the
Stauffer and Prosser Catalogue of Open Cluster Data.
(End) Nigel Hambly [ROE, UK] 01-Mar-2004