A Caltech Library Service

The Evolution of Starburst Galaxies to Active Galactic Nuclei

Scoville, Nick (1990) The Evolution of Starburst Galaxies to Active Galactic Nuclei. In: Submillimetre Astronomy. Astrophysics and Space Science Library. No.158. Springer , Dordrecht, pp. 197-202. ISBN 978-94-015-6852-4.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Recent observations of luminous IRAS galaxies (L_( IR) > 10¹¹ L⊙) have revealed that virtually all are extremely rich in molecular gas with H₂ abundances 5-20 times that of the Milky Way, and deep CCD imaging indicates that most are recent galactic mergers. Interferometric observations with the Owens Valley Millimeter-Wave Interferometer at 2.6 and 1.3 mm for five of these galaxies demonstrate that approximately half of the interstellar matter is contained in the central kpc. Inter-ferometry on the most luminous galaxies (L _(IR) ≥ 10¹¹L⊙) reveals that approximately half of the total interstellar matter is contained in the central kpc with mean densities of several hundred H₂ cm⁻³. Such gas concentrations should result in the very rapid formation of stars, i.e. a central star burst yielding a massive central star cluster. The deep potential of the central star cluster and the high density of interstellar gas will ensure that virtually all of the gas lost during late stellar evolution sinks to the center of the cluster, building up a central, massive black hole. For a coeval star cluster of 4×10⁹ M⊙, a mass of approximately 1.5×10⁹ M⊙ will accumulate within approximately 10⁸ years and accretion at an average rate of 7 M⊙ yr⁻¹ over this time will result in a mean accretion luminosity of 10¹³ L⊙. This luminosity, radiated at X-ray and uv wavelengths from the inner accretion disk ionizes the mass loss envelopes of the surrounding red giant stars providing an origin for the broad emission line regions of QSO’s.

Item Type:Book Section
Related URLs:
URLURL TypeDescription ReadCube access
Scoville, Nick0000-0002-0438-3323
Additional Information:© 1990 Springer Science+Business Media Dordrecht.
Subject Keywords:Black Hole; Active Galactic Nucleus; Starburst Galaxy; Stellar Luminosity; Luminous Galaxy
Series Name:Astrophysics and Space Science Library
Issue or Number:158
Record Number:CaltechAUTHORS:20200512-083814251
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103126
Deposited By: Tony Diaz
Deposited On:12 May 2020 17:03
Last Modified:16 Nov 2021 18:18

Repository Staff Only: item control page