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J/AN/283/109   Star positions in the region of alpha Per (Heckmann+, 1956)

Eigenbewegungen in der Umgebung von alpha Persei. Heckmann O., Dieckvoss W., Kox H. <Astron. Nachrichten, 283, 109-139 (1956)> =1956AN....283..109H
ADC_Keywords: Clusters, open ; Positional data Description: This file contains 1221 stars observed for spectral type in the field of the alpha Persei cluster. The types were published in the well known proper-motion survey by Heckmann et al. (1956AN....283..109H), and were determined by Wachmann with the equipment and methods used for the Bergedorf selected areas surveys (BSD). In general the brighter HD stars were not observed for spectral type, but most of these have been classified on the MK system by Roman & Morgan (1950ApJ...111..426R) and in later work. Nearly all the stars are included in SIMBAD with the source positions, and most also appear in WEBDA with these data as well. The positions below are nearly all from UCAC2 (for both epoch and equinox J2000), and thus differ by a few arcsec mainly from proper motion, but also from the systematic shift between the FK3 to the ICRS. In general the spectral types are not present in SIMBAD or WEBDA. I worked from Alain Fresneau's compilation for the field, which is based largely on the Heckmann data (Cat. I/68). I ran those coordinates into VizieR looking at UCAC2, Tycho-2, and the Fabricius Tycho double-star catalogue (Cat. I/276). Coordinates for two crowded stars were obtained from 2MASS. With one exception all the stars were found quite close to the predicted positions. Close pairs are indicated in the notes, as are stars with substantial proper motion (\gl0.1"/year). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.dat 79 1221 Coordinates for stars in alpha Persei cluster, version 25 Sep 2004
See also: I/68 : Positions and Proper Motions in alpha Per cluster (Fresneau, 1980) J/A+A/395/813 : Alpha Per faint stars photometry (Barrado y Navascues+, 2002) J/A+A/416/125 : RI photometry in alpha Per and Pleiades (Deacon+, 2004) 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) Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 13 A13 --- --- [Cl Melotte 20] 15- 18 I4 --- Seq Heckmann's running number 21- 22 I2 h RAh Right ascension (J2000.0) 24- 25 I2 min RAm Right ascension (J2000.0) 27- 31 F5.2 s RAs Right ascension (J2000.0) 33 A1 --- DE- Declination sign (J2000.0) 34- 35 I2 deg DEd Declination (J2000.0) 37- 38 I2 arcmin DEm Declination (J2000.0) 40- 43 F4.1 arcsec DEs Declination (J2000.0) 45 A1 --- r_Pos [MTU] Position source (1) 47- 50 F4.1 mag pgmag Photographic magnitude 53- 55 A3 --- SpType Spectral type 60- 79 A20 --- Rem Remarks (by B. Skiff)
Note (1): Position sources as follows: M = 2MASS (Cat. II/246) T = Tycho-2 (2000A&A...357..367H, Cat. I/259) U = UCAC2 (2004AJ....127.3043Z, Cat. I/289)
Acknowledgements: Brian Skiff, Brian.Skiff(at)lowell.edu
(End) Francois Ochsenbein [CDS] 03-Oct-2004
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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