A Fundamental Relation between Supermassive Black Holes and Their Host Galaxies
نویسندگان
چکیده
منابع مشابه
A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
The masses of supermassive black holes correlate almost perfectly with the velocity dispersions of their host bulges, MBH ∝ σ α, where α ∼ 5. The relation is much tighter than the relation between MBH and bulge luminosity, with a scatter no larger than expected on the basis of measurement errors alone.
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We study the evolution of the MBH /Mhost relation up to z = 3 for a sample of 96 quasars with known host galaxy luminosities. Black hole masses are estimated assuming virial equilibrium in the broad-line regions, while the host galaxy masses are inferred from their luminosities. With this data, we are able to pin down the evolution of the MBH /Mhost relation over 85% of the age of the universe....
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We describe a model-independent integral constraint which defines an upper limit to the allowed degree of evolution in the ratio of black hole (BH) mass to host galaxy luminosity or mass, as a function of redshift. Essentially, if the BH/host ratio is excessive at redshift z, then it would imply that the total mass density in BHs above some Mmin BH is larger at that redshift than at z = 0, whic...
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We study observed correlations between supermassive black hole (BHs) and the properties of their host galaxies, and show that the observations define a BH “fundamental plane” (BHFP), of the form MBH ∝ σ3.0±0.3 R0.43±0.19 e or MBH ∝ M 0.54±0.17 ∗ σ 2.2±0.5, analogous to the FP of elliptical galaxies. The BHFP is preferred over a simple relation between MBH and any of σ, M∗, Mdyn, or Re alone at ...
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The possibility that the masses M• of supermassive black holes (SBHs) correlate with the total gravitational mass of their host galaxy, or the mass MDM of the dark matter halo in which they presumably formed, is investigated using a sample of 16 spiral and 20 elliptical galaxies. The bulge velocity dispersion σc, typically defined within an aperture of size R < ∼ 0.5 kpc, is found to correlate ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2000
ISSN: 0004-637X
DOI: 10.1086/312838