SIMBAD references

2008ApJ...687..828S - Astrophys. J., 687, 828-834 (2008/November-2)

In search of the largest velocity dispersion galaxies.

SALVIANDER S., SHIELDS G.A., GEBHARDT K., BERNARDI M. and HYDE J.B.

Abstract (from CDS):

We present Hobby-Eberly Telescope (HET) observations for galaxies at redshift z<0.3 from the Sloan Digital Sky Survey (SDSS) showing large velocity dispersions while appearing to be single galaxies in HST images. The high signal-to-noise HET spectra provide more definitive velocity dispersions. The maximum velocity dispersion we find is σ*=444 km/s. Emission-line widths in QSOs indicate that black holes can exist with masses Mø exceeding 5 billion M☉, implying σ*>500 km/s by the local Mø-σ*relationship. This suggests either that QSO black hole masses are overestimated or that the black hole-bulge relationship changes at high black hole mass. The latter option is consistent with evidence that the increase in σ* with luminosity levels off for the brightest elliptical galaxies.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: General - Black Hole Physics

CDS comments: Parag. 4.3 : Abell 1836-BCG = MCG -2-36-002

Simbad objects: 22

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