Abstract Details
| Name: Alaxender Panchal Affiliation: ARIES (Nainital) Conference ID: ASI2018_1605 Title : Extinction map of LMC and SMC using Cepheid variables Authors and Co-Authors : Dr. Yogesh C. Joshi Aryabhatta Research Institute of Observational sciences(ARIES) Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : Cepheid variables are massive He burning stars, with luminosity ranging upto 1000 times of solar luminosity and pulsation periods from one to fifty days. These are an important class of variable stars as their brightness changes in extremely regular fashion. Their period of pulsation depends on its absolute magnitude or its intrinsic brightness which makes them suitable for measuring extragalactic distances. As, SMC (Small Magellanic Cloud) and LMC (Large Magellanic Cloud) are among our closest galaxies, we have used archival data on SMC and LMC in V and I band taken during 3rd phase of OGLE. We have applied well known P-L (Period-Luminosity) relations for V and I band in small regions of LMC and SMC to get extinction in those regions and created a full galaxy extinction map by combining these small regions of LMC and SMC. We have found average E(V-I) value 0.12 and 0.06 for LMC and SMC respectively. |