Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3192
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dc.contributor.authorChokshi, A-
dc.date.accessioned2008-08-18T11:21:36Z-
dc.date.available2008-08-18T11:21:36Z-
dc.date.issued1997-12-
dc.identifier.citationAstrophysical Journal, Vol. 491, No. 1, Part 1, pp. 78 - 85en
dc.identifier.issn0004-637X-
dc.identifier.urihttp://hdl.handle.net/2248/3192-
dc.description.abstractIt is proposed that early jet-induced activity around active galactic nuclei (AGNs) is responsible for triggering large-scale star formation in protogalaxies and results in the formation of giant ellipticals and spheroids in the universe. Specifically, Begelman & Cioffi's model for overpressured cocoons expanding into protogalactic environs yields size estimates that roughly correspond to those observed in present-day ellipticals. Within this framework, the most energetic radio jets trigger the formation of large ellipticals, while the systems with lower jet energies are responsible for the formation of smaller spheroids and bulges of galaxies. Further, the evolution of AGNs with redshift also explains the observed local density of spheroids. Such a scenario naturally accommodates a wide variety of astrophysical observations, including the origin of the infrared Hubble diagram for the most powerful radio galaxies, the origin of galaxy morphologies, the existence of a morphology-density relation in galaxy clusters, angular correlations of QSOs, the observed properties of the highest redshift galaxies, and the correlation of central black hole mass with bulge luminosity in nearby galaxies.en
dc.format.extent360424 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherThe American Astronomical Societyen
dc.relation.urihttp://www.journals.uchicago.edu/doi/abs/10.1086/304929en
dc.subjectGalaxies: Activeen
dc.subjectGalaxies: Elliptical and Lenticularen
dc.subjectCDen
dc.subjectGalaxies: Formationen
dc.subjectGalaxies: Jetsen
dc.titleActive Galactic Nuclei and Galaxy Formationen
dc.typeArticleen
Appears in Collections:IIAP Publications

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