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
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). 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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: tableb2.dat tableb4.dat
Bytes Format Units Label Explanations
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
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.
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
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