Be star surveys with CCD photometry. II. NGC 1818 and its neighbouring cluster in the LMC

Details Be star surveys with CCD photometry. II. NGC 1818 and its neighbouring cluster in the LMC Be star surveys with CCD photometry. II. NGC 1818 and its neighbouring cluster in the LMC

1996-06-19

arxiv.org/abs/gr-qc/9606058v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX source with links to 25 postscript figures. Complete postscript version of the paper with all figures and an ASCII versi

Scientific paper

As part of an ongoing photometric survey of young Magellanic Cloud clusters we identified Be stars in NGC 1818 and a nearby smaller cluster in the Large Magellanic Cloud. The neighbouring cluster does not contain evolved stars, and its sparsely populated main sequence does not extend to stars as massive as in NGC 1818. Both clusters are younger than the surrounding field population and contain a much higher Be star fraction. We present a table with photometry, astrometric positions, and IAU-conform identifiers of the Be stars. We compare Be star fractions in Magellanic Cloud clusters and Galactic open clusters and discuss possible constraints on Be star theories.

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