Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-05-31
2007, MNRAS, 380, L15
Astronomy and Astrophysics
Astrophysics
MNRAS, accepted
Scientific paper
10.1111/j.1745-3933.2007.00340.x
We have investigated past measurements of the local supermassive black hole mass density, correcting for hitherto unknown dependencies on the Hubble constant, which, in some cases, had led to an underestimation of the mass density by factors of ~2. Correcting for this, we note that the majority of past studies yield a local supermassive black hole mas density that is consistent with the range 4.4-5.9 x 10^5 f(H_0) M_Sun / Mpc^3 (when using H_0 = 70 km/s/Mpc). In addition, we address a number of ways in which these past estimates can be further developed. In particular, we tabulate realistic bulge-to-total flux ratios which can be used to estimate the luminosity of bulges and subsequently their central black hole masses.
Driver Simon. P.
Graham Alister W.
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