J/AJ/108/1256 The OB association LH 58 (Garmany+, 1994)
The OB association LH 58 in the Large Magellanic Cloud Garmany C.D., Massey P., Parker J.W. <Astron. J. 108, 1256 (1994)> =1994AJ....108.1256G (SIMBAD/NED Reference)
ADC_Keywords: Associations, stellar ; Photometry, CCD Abstract: We present CCD photometry and spectroscopy for stars in Lucke-Hodge 58, an isolated OB association in the Large Magellanic Cloud (LMC) northwest of 30 Doradus. The photometric catalog contains 839 stars with UBV magnitudes complete to V∼19. We have obtained spectra and classified 35 stars; combined with previous published spectral types, we find 22 O-type stars. The earliest type is O3-4 V, and there are three WR stars in the association. The slope of the initial mass function, Gamma=-1.7±0.3, is in good agreement with other LMC associations. The presence of several evolved supergiants with masses about 15-25M☉ suggests that some star formation took place as early as 10 million years ago, but the majority of stars formed coevally within the past few million years. Addresses: Garmany C.D. Joint Institute for Laboratory Astrophysics, Box 440 University of Colorado, Boulder, Colorado 80309-0389 Massey P. Kitt Peak National Observatory, National Optical Astronomy Observatories, P.O. Box 26732, Tucson, Arizona 85726-6732 Parker J.W. Laboratory for Astrophysics and Space Astronomy, Code 681, Goddard Space Flight Center - NASA, Greenbelt, Maryland 20771 File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 44 839 UBV photometry of stars in LH 58 table3.tex 92 976 LaTeX version of table3 posmk.dat 48 29 *Position and MK types of selected stars
Note on posmk.dat: file supplied by Brian Skiff in April 2004; it contains spectral types from table4 of paper, and accurate positions from reference catalogs.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID Star number, in increasing RA order 6- 11 F6.1 pix Xpos X CCD coordinate 13- 17 F5.1 pix Ypos Y CCD coordinate 19- 24 F6.2 mag Vmag V magnitude 25- 26 A2 --- u_Vmag [: ] Uncertainty flag for V (1) 28- 33 F6.2 mag B-V B-V color 34- 35 A2 --- u_B-V [: ] Uncertainty flag for B-V (1) 37- 42 F6.2 mag U-B U-B color 43- 44 A2 --- u_U-B [: ] Uncertainty flag for U-B (1)
Note (1): A colon, ":", indicates that the error in magnitude or color (i.e. the weighted average of the photometric errors for that star as calculated by DAOPHOT) is greater than two times the error listed in Table 2 in the printed paper. Two colons, "::", indicate errors greater than three times the typical value.
Byte-by-byte Description of file: posmk.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID Star number, as in table3.dat 7- 8 I2 h RAh Right Ascension J2000 (hours) 10- 11 I2 min RAm Right Ascension J2000 (minutes) 13- 17 F5.2 s RAs Right Ascension J2000 (seconds) 19 A1 --- DE- Declination J2000 (sign) 20- 21 I2 deg DEd Declination J2000 (degrees) 23- 24 I2 arcmin DEm Declination J2000 (minutes) 26- 29 F4.1 arcsec DEs Declination J2000 (seconds) 31 A1 --- refPos [UM] Reference of position: U=UCAC2 (Cat. I/289), M=2MASS (Cat. II/246) 33- 37 F5.2 mag Vmag V magnitude, as in tabe3.dat 40- 48 A9 --- SpType MK Spectral type (from Table 4 of paper)
Origin: AAS CD-ROM series, Volume 3, 1995 History: * 16-Feb-1995: first version with table3 only, originally prepared by Lee Brotzman and distributed as AAS CD-ROM series, Volume 3. * 26-Apr-2004: accurate positions and spectral types extracted from Tble4 of paper were forwarded by B. Skiff to CDS.
(End) Patricia Bauer, Francois Ochsenbein [CDS] 26-Apr-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|