Massive LMC stars AAOmega spectroscopy Virtual Observatory Resource

Authors
  1. Evans C.J.
  2. van Loon J.T.
  3. Hainich R.
  4. Bailey M.
  5. Published by
    CDS
Abstract

We present spectral classifications from optical spectroscopy of 263 massive stars in the north-eastern region of the Large Magellanic Cloud. The observed two-degree field includes the massive 30 Doradus star-forming region, the environs of SN1987A, and a number of star-forming complexes to the south of 30 Dor. These are the first classifications for the majority (203) of the stars and include eleven double-lined spectroscopic binaries. The sample also includes the first examples of early OC-type spectra (AAOmega 30 Dor 248 and 280), distinguished by the weakness of their nitrogen spectra and by CIV {lambda}4658 emission. We propose that these stars have relatively unprocessed CNO abundances compared to morphologically normal O-type stars, indicative of an earlier evolutionary phase. From analysis of observations obtained on two consecutive nights, we present radial-velocity estimates for 233 stars, finding one apparent single-lined binary and nine (>3{sigma}) outliers compared to the systemic velocity; the latter objects could be runaway stars or large-amplitude binary systems and further spectroscopy is required to investigate their nature.

Keywords
  1. magellanic-clouds
  2. b-stars
  3. spectroscopic-binary-stars
Bibliographic source Bibcode
2015A&A...584A...5E
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/584/A5
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/584/A5
Document Object Identifer DOI
doi:10.26093/cds/vizier.35840005

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/584/A5
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/584/A5
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/584/A5
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/584/A5/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/584/A5/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/584/A5/table2?

History

2015-11-13T08:09:59Z
Resource record created
2015-11-13T08:09:59Z
Created
2017-09-15T14:55:40Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr