File:A Double Nucleus in Active Galaxy Markarian 315 (1993-03-92).jpg

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A NASA Hubble Space Telescope image of the core of the Seyfert galaxy Markarian 315 reveals two nuclei located approximately 6,000 light-years apart.

Summary[edit]

Description
English: A NASA Hubble Space Telescope image of the core of the Seyfert galaxy Markarian 315 reveals two nuclei located approximately 6,000 light-years apart. (Seyfert galaxies are a class of spiral galaxy with extremely bright nuclei that are thought to be powered by massive black holes accreting matter.) The brighter member of the pair is the energetic core of the galaxy which probably contains a black hole. The fainter companion is considered to be the core of a galaxy in the process of merging with Markarian 315. The image helps confirm that galaxy mergers may be one mechanism for driving gas deep into the heart of a galaxy, according to astronon~t,rs. This raw material fuels a massive black hole, theorized to be the "central engine" in Seyfert galaxies and other active galactic nuclei. The photograph, taken with HST's Planetary Camera, was presented at the 1 81st Meeting of the American Astronomical Society meeting in Phoenix, AZ on January 7, 1993.
Date 7 January 1993 (upload date)
Source A Double Nucleus in Active Galaxy Markarian 315
Author Photo Credit: J. MacKenty (STScl), and NASA.
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Public domain This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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