Abstract Details
| Name: Blesson Mathew Affiliation: Christ University Conference ID: ASI2018_1674 Title : Discovery of a population of Herbig Be stars in the Large Magellanic Cloud Authors and Co-Authors : Blesson Mathew (Christ University, Bengaluru), P. Manoj (TIFR, Mumbai), W. A. Reid (Macquarie University, Australia), Mayank N. (TIFR, Mumbai), Paul K. T. (Christ University, Bengaluru) Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : We report the discovery of a population of Herbig Be (HBe) stars in the Large Magellanic Cloud (LMC). This sample of 81 HBe stars were identified from the catalog of emission-line stars from Reid & Parker (2012). The selection was done based on the presence of forbidden SII λλ6717/6731 emission lines and near-IR excess, which are indicative of nebulosity and dusty disc associated with HBe stars. Further, the age and mass of these pre-main sequence stars were estimated from the fit of Padova ischrones and evolutionary tracks in the optical color magnitude diagram. The potential of this study lies in the fact that this is the first time such a large sample of spectroscopicaly confirmed HBe stars is identified in the LMC. We classified the sources as flat disc, flared disc and transition disc candidates from the analysis of spectral energy distribution. We intend to compare and contrast the properties of these HBe candidates with those in our galaxy, thereby providing insights on the role of metallicity in star formation. |