Abstract Details
| Name: Susmita Barman Affiliation: University of Hyderabad, Hyderabad Conference ID: ASI2019_111 Title : Physical conditions of HII regions in Superbubble N44 in the LMC Authors and Co-Authors : Susmita Barman, Naslim Neelamkodan Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : The superbubble N44 region is an active high mass star-forming region in the Large Magellanic Cloud galaxy (LMC). The LMC (metallicity Z=0.5 solar ) at a distance of 50 kpc with a half solar metallicity is an appropriate site to study the physical properties of high-mass star-forming regions in a metal-poor environment. About 50 massive hot stars have been found in associated with the superbubble N44. We aim to carry out a detailed study of the HII regions in N44 by using optical and infrared data. We use Hα, [SII] and [OIII] emission maps which are obtained as part of the Magellanic Cloud Photometric Survey (MCPS). We also use the Spitzer photometric and spectroscopic data obtained as part of Surveying the Agents of Galaxy Evolution (SAGE). Spitzer photometric and spectroscopic data are used to trace the properties of dust feature. We present our preliminary study of electron density, ionizing photon flux, Stromgren radii, intensity of interstellar radiation field and the morphology of N44. Our study shows that the electron density of N44 varies from 6.5 to 39 cm^- 3. The Lyman continuum photon luminosity of each ionizing star in the region is found to be 0.28X10^49 photons/s to 3.99X10^49 photons/s. We use [SII]/Hα and [OIII]/Hα ratios to distinguish shock induced and photoionized gas in N44. |