IIA Institutional Repository

NIR properties of Be stars in star clusters in the Magellanic Clouds

Show simple item record

dc.contributor.author Paul, K. T
dc.contributor.author Subramaniam, A
dc.contributor.author Mathew, B
dc.contributor.author Shruthi, S. B
dc.date.accessioned 2020-11-11T01:36:57Z
dc.date.available 2020-11-11T01:36:57Z
dc.date.issued 2017-10
dc.identifier.citation New Astronomy, Vol. 56, pp. 28–49 en_US
dc.identifier.issn 1384-1076
dc.identifier.uri http://prints.iiap.res.in/handle/2248/6875
dc.description Restricted Access Elsevier B.V https://doi.org/10.1016/j.newast.2017.04.004 en_US
dc.description.abstract Magellanic Clouds are the nearby galaxies which are ideal to study the properties of metal poor stellar population. In this study, we explore the near-IR properties of optically identified classical Be stars in 19 star clusters in the Magellanic Clouds. From an optically identified sample of 835 Be stars we obtained the J, H, K magnitudes of 389 stars from the IRSF MCPS catalog. Among these, 247 stars (36.4%) are found in 9 clusters in the Large Magellanic Cloud and 142 stars (55.5%) in 10 clusters in the Small Magellanic Cloud. After correcting for reddening, we studied their NIR properties in the (H –K) 0 vs (J –H) 0 diagram. We identified 14 stars with abnormally large near IR excesses, which were removed from the analysis, there by restricting our study to 355 classical Be stars. We propose an extended area in the near-IR (H - K) 0 vs (J - H) 0 diagram as the diagnostic location of Classical Be stars in the Magellanic Clouds. We identified 14 stars to have near-IR excess, higher than those seen in classical Be stars. From the analysis based on spectral energy distribution and luminosity estimate, we found that 8 candidate Be stars may be Herbig Ae/Be stars. We identified a new sample of 6 sgB[e] stars, which when added to the sparse existing sample of 15 sgB[e] stars in the Magellanic Clouds can provide insight to understand the evolutionary link between sgB[e] stars and Luminous Blue variables. en_US
dc.language.iso en en_US
dc.publisher Elsevier B.V en_US
dc.subject Stars en_US
dc.subject Emission-line en_US
dc.subject Be—infrared en_US
dc.subject Stars—galaxies en_US
dc.subject Magellanic Clouds en_US
dc.title NIR properties of Be stars in star clusters in the Magellanic Clouds en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account