Association of Different Phases of ISM in Nearby Early Type Galaxy NGC 2434
Author : BT Tate
Abstract :
This paper presents the x-ray and optical study of nearby early type galaxy NGC 2434. We present results based on systematic analysis of broad band Optical data taken from Hubble Space Telescope (HST) and X-ray data from Chandra archive data of the nearby early type galaxy NCC 2434 with total exposure of 46.69 ks (ObsID 2923). For Optical analysis of this galaxy we have used Image Reduction and Analysis Facility (IRAF) and two-dimensional fitting algorithm GALFIT, while for X-ray data analysis we have used Chandra Interactive Analysis of Observations (CIAO) v.4.6.1.1 and the corresponding calibration files CALBD v.4.6.1 provided by the Chandra X-ray Center (CXC). Color index map, extinction map and residual map obtained from optical data analysis confirms presence of dust in this galaxy. Tricolor map, surface brightness profile obtained from X-ray data analysis confirms the presence of hot gas in this galaxy. By fitting spectrum to the diffuse component of hot gas and discrete point sources present in D25 region of this galaxy, we have finded x-ray luminosity of diffuse gas and luminosity of point sources. In order to confirm association and origin of different phase of Interstellar Medium (ISM), we have overlaid dust extinction contours and X-ray contours on K-band near IR image.
Keywords :
Optical and X-ray Analysis, NGC 2434
