A Catalogue of Be Stars in the Direction of the Galactic Bulge

Abstract

Detailed studies of Be stars in environments with different metallicities like the Magellanic Clouds or the Galactic bulge are necessary to understand the formation and evolution mechanisms of the circumstellar disks. However, a detailed study of Be stars in the direction of the bulge of our own galaxy has not been performed until now. We report the first systematic search for Be star candidates in the direction of the Galactic Bulge. We present the catalogue, give a brief description of the stellar variability seen, and show some light curve examples. We searched for stars matching specific criteria of magnitude, color and variability in the I band. Our search was conducted on the 48 OGLE II fields of the Galactic Bulge.This search has resulted in 29053 Be star candidates, 198 of them showing periodic light variations. Nearly 1500 stars in this final sample are almost certainly Be stars, providing an ideal sample for spectroscopic multiobject follow-up studies.

arXiv commentAccepted for publication in A & A

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Cited by in corpus (8)

• Dynamical Evolution of Viscous Disks around Be Stars. I: photometry
• Gaia Data Release 3: All-sky classification of 12.4 million variable sources into 25 classes
• Gaia Data Release 3: Cross-match of Gaia sources with variable objects from the literature
• Dynamical Evolution of Viscous Disks around Be Stars. II : polarimetry
• Variability of Massive Stars with Known Spectral Types in the Small Magellanic Cloud Using 8 Years of OGLE-III Data
• Newly Discovered Wolf-Rayet and Weak Emission-Line Central Stars of Planetary Nebulae
• Machine learning techniques to select Be star candidates. An application in the OGLE-IV Gaia south ecliptic pole field
• New transient Galactic bulge intermediate polar candidate XMMU J175035.2-293557