HST snapshot imaging of BL Lac objects

Details HST snapshot imaging of BL Lac objects HST snapshot imaging of BL Lac objects

1998-12-18

arxiv.org/abs/astro-ph/9812353v1

BL Lac Phenomenon,Turku 1998, PASP conf. series

Astronomy and Astrophysics

Astrophysics

6 pages

Scientific paper

Snapshot images of about 100 BL Lac objects were obtained with WFPC2 on HST. Sources from various samples, in the redshift range 0.05 to 1.2, were observed and 61 resolved (51 with known z). The high resolution and homogeneity of the images allow us to address the properties of the immediate environments of BL Lacs with unprecedented capability. Host galaxies of BL Lacs are luminous ellipticals (on average 1 mag brighter than L*) with no or little disturbed morphology. The nucleus, that is always well centered onto the galaxy, contributes in the optical (R band) to about half of the total luminosity of the object (range of the contribution from 0.1 to 10). The undisturbed morphology suggests that the nuclear activity has marginal effect on the overall properties of the hosts. Nonetheless several examples of close companions have been detected. The luminosity distribution of host galaxies is compared with that of a large sample of FR-I radio galaxies.

Affiliated with

Also associated with

No associations

Rating

HST snapshot imaging of BL Lac objects 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 HST snapshot imaging of BL Lac objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HST snapshot imaging of BL Lac objects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-347567