Other
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108.1256g&link_type=abstract
The Astronomical Journal, vol. 108, no. 4, p. 1256-1265
Other
32
Astronomical Catalogs, Astronomical Photography, Astronomical Spectroscopy, B Stars, Magellanic Clouds, O Stars, Star Formation, Stellar Mass, Stellar Spectra, Stellar Spectrophotometry, Supergiant Stars, Ubv Spectra, Wolf-Rayet Stars, Charge Coupled Devices, Color-Color Diagram, H Alpha Line, Hertzsprung-Russell Diagram, Stellar Luminosity
Scientific paper
We present charge coupled device (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 approximately = 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 Wolf-Rayet (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 solar mass 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.
Garmany Catharine D.
Massey Philip
Parker Joel Wm.
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