Abstract Details
| Name: Bryan Rithesh Miranda Affiliation: Bangalore University Conference ID: ASI2017_1099 Title : Detecting UV bright stellar population in Open Cluster Remnants Authors and Co-Authors : Annapurni Subramaniam (Indian Institute of Astrophysics, IIA), Ram Sagar (Indian Institute of Astrophysics, IIA), Vijayakumar H. Doddamani (Bangalore University) Abstract Type : Oral Abstract Category : Stars,ISM and the Galaxy Abstract : In this paper we present the Ultra Violet (UV) Photometric Study of four candidate Open Star Cluster Remnants(OCRs) NGC 7772, NGC 7036, NGC 6994 and NGC 1252. The existing GALEX photometric data in the UV region are used in the present study. The distance of these clusters is within 1.5 kpc while their ages are of the order of a few Gyrs. They have a minimum exposure time of ∼1 hour for NGC 7772 and a maximum exposure time of ∼ 5 hours for NGC 7036. For our analysis, we have used the Flexible Stellar Population Synthesis (FSPS) models (Conroy C., Gunn J. E., White M., 2009) which have isochrones with the WD sequence and have generated the Colour Magnitude Diagrams (CMDs) for both the Optical and UV bands. The multi-wavelength study of these OCR candidates from the Optical to the UV region suggests that they may have a few young White Dwarfs (WDs), Blue Stragglers, and Main-Sequence + WD binaries . The UV bright population detected in these clusters support that these clusters are OCRs and are consistent with the expected left-over stellar population in an OCR. |