A 2dF survey of the Small Magellanic Cloud
Abstract
We present a catalogue of new spectral types for hot, luminous stars in the Small Magellanic Cloud (SMC). The catalogue contains 4161 objects, giving an order-of-magnitude increase in the number of SMC stars with published spectroscopic classifications. The targets are primarily B- and A-type stars (2862 and 853 objects respectively), with one Wolf-Rayet, 139 O-type and 306 FG stars, sampling the main sequence to ~mid-B. The selection and classification criteria are described, and objects of particular interest are discussed, including UV-selected targets from the Ultraviolet Imaging Telescope (UIT) experiment, Be and B[e] stars, `anomalous A supergiants' and composite-spectrum systems. We examine the incidence of Balmer-line emission, and the relationship between Hγ equivalent width and absolute magnitude for BA stars.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- September 2004
- DOI:
- 10.1111/j.1365-2966.2004.08096.x
- arXiv:
- arXiv:astro-ph/0406409
- Bibcode:
- 2004MNRAS.353..601E
- Keywords:
-
- stars: early-type;
- stars: emission-line;
- Be;
- stars: fundamental parameters;
- Hertzsprung-Russell (HR) diagram;
- Magellanic Clouds;
- Astrophysics
- E-Print:
- 27 pages, 17 figures (reduced size). Accepted for publication in MNRAS. Both a postscript version with normal res. figs and the full catalogue is available from http://www.ing.iac.es/~cje/2dF.html