Emission line - radio correlation for Low Luminosity Compact sources. Evolution schemes

Details Emission line - radio correlation for Low Luminosity Compact sources. Evolution schemes Emission line - radio correlation for Low Luminosity Compact sources. Evolution schemes

2011-06-29

arxiv.org/abs/1106.5918v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 2 figures, Proceedings of the "10th European VLBI Network Symposium and EVN Users Meeting: VLBI and the new generatio

Scientific paper

We present radio and optical analysis of a sample of Low Luminosity Compact (LLC) objects, selected from FIRST survey and observed with MERLIN at L-band and C-band. The main criterion used for selection was luminosity of the objects and approximately one third of the CSS sources from the new sample have a value of radio luminosity comparable to FR\,Is.The analysis of a radio properties of LLC sources show they occupy the space in radio power versus linear size diagram below the main evolutionary path of radio objects. We suggest that many of them might be short-lived objects, and their radio emission may be disrupted several times before becoming FR\,IIs. The optical analysis of the LLC sources were made based on the available SDSS images and spectra. We have classified the sources as high and low excitation galaxies (HEG and LEG, respectively). The optical and radio properties of the LLC sample are in general consistent with brighter CSSs and large-scale radio sources. However, when LLC are added to the other samples, HEG and LEG seem to follow independent, parallel evolutionary tracks. LLC and luminous CSS behave like FR\,II sources, while FR\,I seem to belong to a different group of objects, concerning ionization mechanisms. Based on our results, we propose the independent, parallel evolutionary tracks for HEG and LEG sources, evolving from GPS - CSS - FR.

Affiliated with

Also associated with

No associations

Rating

Emission line - radio correlation for Low Luminosity Compact sources. Evolution schemes 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 Emission line - radio correlation for Low Luminosity Compact sources. Evolution schemes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emission line - radio correlation for Low Luminosity Compact sources. Evolution schemes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-359269