Astronomy and Astrophysics Seminars

Radio-FIR correlation in blue-cloud galaxies with Z < 1

by Dr. Yogesh Wadadekar (NCRA, TIFR, Pune)

Tuesday, November 11, 2014 from to (Asia/Kolkata)
at DAA Seminar Room (A-269)
Description
We combine deep observations of the XMM-LSS field using Magellan, Spitzer, Herchel, VLA and GMRT telescopes to carry out a comprehensive observational study of the radio FIR correlation in Milky Way like star-forming galaxies out to $z \sim 1$. We use stacking techniques to probe the correlation for galaxies that are upto 3 orders of magnitude fainter than those directly detected in FIR bands. We find that the tight radio-FIR correlation holds for these galaxies at all redshifts. Within the uncertainties of our measurement, there is no evolution of the correlation with redshift. The characteristic dust temperature evolves linearly with redshift. Some implications of these measurements to existing models will be discussed.