Open AccessA 2dF survey of the Small Magellanic Cloud
Author(s) -
Evans Christopher J.,
Howarth Ian D.,
Irwin Michael J.,
Burnley Adam W.,
Harries Timothy J.
Publication year - 2004
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.08096.x
Subject(s) - physics , stars , astrophysics , balmer series , supergiant , wolf–rayet star , stellar classification , astronomy , large magellanic cloud , small magellanic cloud , telescope , main sequence , emission spectrum , spectral line
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.