Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497

Details Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497 Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...517l...8r&link_type=abstract

Astronomy and Astrophysics, Volume 517, id.L8

Astronomy and Astrophysics

Astrophysics

6

Galaxies: Active, Galaxies: Ism, Galaxies: Individual: Ic 2497, Galaxies: Star Formation

Scientific paper

We present high- and intermediate resolution radio observations of the central region in the spiral galaxy IC 2497, performed using the European VLBI Network (EVN) at 18 cm, and the Multi-Element Radio Linked Interferometer Network (MERLIN) at 18 cm and 6 cm. We detect two compact radio sources, with brightness temperatures above 105 K, suggesting that they are related to AGN activity. We show that the total 18 cm radio emission from the galaxy is dominated neither by these compact sources nor large-scale emission, but extended emission confined within a sub-kpc central region. IC 2497 therefore appears as a typical luminous infrared galaxy that exhibits a nuclear starburst with a massive star formation rate (M > 5 M&sun;) of 12.4 M&sun;/yr. These results are in line with the hypothesis that the ionisation nebula “Hanny's Voorwerp” at a distance of ~ 15-25 kpc from the galaxy is ionised by the radiation cone of the AGN.
Table 2 is only available in electronic form at http://www.aanda.org

Affiliated with

Also associated with

No associations

Rating

Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497 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 Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1642077