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Multiwavelength Study of Radio Loud Early-Type Galaxies from the B2 Sample

Published online by Cambridge University Press:  25 July 2014

Sheetal Kumar Sahu
Affiliation:
SOS in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur, India492010 email: sks.1884@gmail.com; chaware.laxmikant@gmail.com; proskp@gmail.com
Laxmikant Chaware
Affiliation:
SOS in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur, India492010 email: sks.1884@gmail.com; chaware.laxmikant@gmail.com; proskp@gmail.com
S. K. Pandey
Affiliation:
SOS in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur, India492010 email: sks.1884@gmail.com; chaware.laxmikant@gmail.com; proskp@gmail.com
Samridhi Kulkarni
Affiliation:
SOS in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur, India492010 email: sks.1884@gmail.com; chaware.laxmikant@gmail.com; proskp@gmail.com
M. B. Pandge
Affiliation:
S.R.T.M. University, Nanded, Maharastra, India
N. K. Chakradhari
Affiliation:
SOS in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur, India492010 email: sks.1884@gmail.com; chaware.laxmikant@gmail.com; proskp@gmail.com
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Abstract

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We present multiwavelength study of a sample of radio loud early-type galaxies chosen from the B2 sample. We performed surface photometry in BVR broad band filters and Hα narrow band filter on CCD images of sample galaxies using IGO 2m telescope, Pune (INDIA), to get radial profiles of various photometric and geometrical parameters that describe elliptical isophotes fitted to the 2D light distribution of the galaxies. The analysis of radial profiles of quantities such as the (local) surface brightness, the ellipticity, and the deviations from elliptical isophotes parametrized by the Fourier coefficients are main focus of our study. We generated color maps, residual maps, and dust extinction maps, Hα emission maps of the galaxies to study the morphology of the dust and ionized gas content present in the galaxies. We carried out detailed analysis of the properties of the dust present in our sample galaxies. Additionaly, we investigated properties of the dust in the central ~10 arcsec region of our sample galaxies using optical images available from the HST (WFPC2) data archive. We estimated mass and temperature of the dust, molecular gas mass, in the sample galaxies using FIR fluxes of the galaxies obtained from IRAS.

We used spectroscopic data available from the SDSS (DR7) to get an estimate of the mass of the central super massive black-hole for B2 1257+28 (NGC 4874). We plotted rotation curve for coma cluster (Abell 1656), which indicates the presence of dark matter halo around the galaxy B2 1257+28.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2014 

References

Finkelman, I., et al. 2008, MNRAS, 390, 969.Google Scholar
Gonzalez-Serrano, J. I., et al. 1993, AJ 105, 1710.Google Scholar
Gonzalez-Serrano, J. I., Carballo, R., 2000, A&AS, 142, 353.Google Scholar
Patil, M. K., Pandey, S. K., Sahu, D. K., et al. 2007, A&A, 461, 103.Google Scholar
Sahu, D. K., Pandey, S. K., Kembhavi, A., 1998, A&A, 333, 803.Google Scholar