CDROM/AJ/V108/P1256 LH 58 (Garmany+ 1994) ================================================================================ The OB Association LH 58 in the Large Magellanic Cloud Catharine D. Garmany, Philip Massey, & Joel Wm. Parker <1994, AJ, 108, 1256> =1994AJ....108.1256G ================================================================================ 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 approx. 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 15-25 Msun 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. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table3.dat 44 839 UBV photometry of stars in LH 58 table3.tex 92 976 LaTeX version of table 3 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- ID Star number, in increasing RA order 5 1X --- --- Blank 6-11 F6.1 pix X X CCD coordinate 12-17 F6.1 pix Y Y CCD coordinate 18-24 F7.2 mag V V magnitude 25-26 A2 --- u_V *Uncertainty flag for V 27-33 F7.2 mag B-V B-V color 34-35 A2 --- u_B-V *Uncertainty flag for B-V 36-42 F7.2 mag U-B U-B color 43-44 A2 --- u_U-B *Uncertainty flag for U-B -------------------------------------------------------------------------------- Notes for file: table3.dat -------------------------------------------------------------------------------- u_V, u_B-V, u_U-B: 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. -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 31-Oct-1994