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27 April 2024 |
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Article overview
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Cosmic Evolution of Black Holes and Spheroids. V. The Relation Between Black Hole Mass and Host Galaxy Luminosity for a Sample of 79 Active Galaxies | Daeseong Park
; Jong-Hak Woo
; Vardha N. Bennert
; Tommaso Treu
; Matthew W. Auger
; Matthew A. Malkan
; | Date: |
24 Nov 2014 | Abstract: | We investigate the cosmic evolution of the black hole (BH) mass -- bulge
luminosity relation using a sample of 52 active galaxies at $z sim 0.36$ and
$z sim 0.57$ in the BH mass range of $10^{7.4-9.1} M_{odot}$. By consistently
applying multi-component spectral and structural decomposition to high-quality
Keck spectra and high-resolution HST images, BH masses ($M_{
m BH}$) are
estimated using the H$eta$ broad emission line combined with the 5100 AA
nuclear luminosity, and bulge luminosities ($L_{
m bul}$) are derived from
surface photometry. Comparing the resulting $M_{
m BH}-L_{
m bul}$ relation
to local active galaxies and taking into account selection effects, we find
evolution of the form $M_{
m BH} / L_{
m bul} propto (1+z)^{gamma}$ with
$gamma=1.8pm0.7$, consistent with BH growth preceding that of the host
galaxies. Including an additional sample of 27 active galaxies with $0.5<z<1.9$
taken from the literature and measured in a consistent way, we obtain
$gamma=0.9pm0.7$ for the $M_{
m BH}-L_{
m bul}$ relation and
$gamma=0.4pm0.5$ for the $M_{
m BH}$--total host galaxy luminosity ($L_{
m
host}$) relation. The results strengthen the findings from our previous studies
and provide additional evidence for host-galaxy bulge growth being dominated by
disk-to-bulge transformation via minor mergers and/or disk instabilities. | Source: | arXiv, 1411.6334 | Services: | Forum | Review | PDF | Favorites |
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