Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..32..161h&link_type=abstract
The Nuclear Region, Host Galaxy and Environment of Active Galaxies (Eds. Erika Benítez, Irene Cruz-González, & Yair Krongold) Re
Astronomy and Astrophysics
Astronomy
1
Bl Lacertae Objects: General, Galaxies: Active, Galaxies: Interactions, Galaxies: Nuclei, Galaxies: Photometry
Scientific paper
We present UBV-band imaging of 18 low redshift (z ≤ 0.3) BL Lac objects. These data are used to investigate the blue-red-near-infrared colours and colour gradients of the host galaxies. The distributions of the integrated blue/near-infrared colour and colour gradient of the BL Lac hosts are much wider than those for inactive ellipticals, and most BL Lac objects have bluer hosts and/or steeper colour gradients than those in inactive ellipticals. The blue colours are likely caused by a young stellar population component, and indicates a link between star formation caused by an interaction/merging event and the onset of the nuclear activity. This result is supported by stellar population modelling, indicating a presence of young/intermediate age populations in the majority of the sample.
Falomo Renato
Hyvonen Tomi
Kotilainen Jari K.
Pursimo Tapio
No associations
LandOfFree
The stellar content of low redshift BL Lac host galaxies from multicolour imaging 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 The stellar content of low redshift BL Lac host galaxies from multicolour imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The stellar content of low redshift BL Lac host galaxies from multicolour imaging will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1698281