An evolution of the IR-Radio correlation?

Details An evolution of the IR-Radio correlation? An evolution of the IR-Radio correlation?

2008-01-07

arxiv.org/abs/0801.1034v1

PoS MRU:056,2007

Astronomy and Astrophysics

Astrophysics

To Appear in The Modern Radio Universe: From Planets to Dark Energy Conference (Oct 1-5 2007, The University of Manchester) Ed

Scientific paper

Using extremely deep (rms 3.3 microJy/bm) 1.4GHz sub-arcsecond resolution MERLIN + VLA radio observations of a 8'.5 by 8'.5 field centred upon the Hubble Deep Field North, in conjunction with Spitzer 24 micron data we present an investigation of the radio-MIR correlation at very low flux densities. By stacking individual sources within these data we are able to extend the MIR-radio correlation to the extremely faint (~microJy and even sub-microJy) radio source population. Tentatively we demonstrate a small deviation from the correlation for the faintest MIR sources. We suggest that this small observed change in the gradient of the correlation is the result of a suppression of the MIR emission in faint star-forming galaxies. This deviation potentially has significant implications for using either the MIR or non-thermal radio emission as a star-formation tracer at low luminosities.

Affiliated with

Also associated with

No associations

Rating

An evolution of the IR-Radio correlation? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An evolution of the IR-Radio correlation?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An evolution of the IR-Radio correlation? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-654781