Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-06-09
Astrophys.J. 595 (2003) 624-630
Astronomy and Astrophysics
Astrophysics
ApJ, accepted, 17 pages
Scientific paper
10.1086/377432
We report on measurements of the stellar velocity dispersion (sigma) from the optical spectra of the host galaxies of four BL Lac objects. Together with our earlier results on seven BL Lac objects (Falomo et al. 2002), and with the previously derived photometrical and structural properties, these data are used to construct the Fundamental Plane (FP) of the BL Lac hosts. We find that the BL Lacs follow the same FP as low redshift radio galaxies and inactive luminous ellipticals, in agreement with similar results presented by Barth et al. (2003). This indicates that the photometrical, structural and kinematical properties of the host galaxies of BL Lacs are indistinguishable from those of inactive massive ellipticals. Using the correlation between black hole mass (M_BH) and sigma in nearby elliptical galaxies, we derive the masses of the central black hole in BL Lacs. These masses, in the range of 6 x 10^7 to 9 x 10^8 M_o, are consistent with the values derived from the bulge luminosity and appear to be linearly correlated with the mass of the galaxies (M_BH} ~0.001 x M_bulge).
Carangelo Nicoletta
Falomo Renato
Kotilainen Jari K.
Treves Aldo
No associations
LandOfFree
Black hole masses and the Fundamental Plane 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 Black hole masses and the Fundamental Plane of BL Lac objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Black hole masses and the Fundamental Plane of BL Lac objects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-546785