Multiphase ISM in early type galaxies: A case study of NGC 708

We present a multiwavelength study of a nearby radio loud elliptical galaxy NGC 708, selected from the Bologna B2 sample of radio galaxies. We obtained optical broad band and narrow images from IGO 2m telescope (Pune, India). We supplement the multiwavelength coverage of the observation by using X-ray data from Chandra, UV data from GALEX, infrared data from 2MASS, Spitzer and WISE, Very Large Array (VLA), Giant Metrewave Radio Telescope (GMRT) and IRAM for radio data.In order to investigate properties of Interstellar medium, we have generated unsharp-masked, colour, residual, quotient, dust extinction, Hα emission, CO intensity, X-ray diffuse emission maps and it is evident that cool gas, CO, dust, warm ionized Hα and hot X-ray gas are spatially associated with each other.We also made use of the HST(WFPC2, ACS, NICMOS2) archival images to investigate the properties at the central ∼10 arcsec region of NGC 708. We model the surface brightness profiles of the galaxy in different wavelengths by fitting a combination of (Power + Sersic) law and Devaucouleur’s law and it is evident that former model gives a better fit than the latter. We investigate the inner and outer photometric and kinematic properties of the galaxy using surface brightness profiles. From X-ray 2d beta model, unsharp masking, surface brightness and temperature profiles techniques it is evident that pair of X-ray cavities are present in this system and which are ∼5Kpc away from the central X-ray source.