The Galaxy Interaction and Merger Rates: A Science Scenario for a National Virtual Observatory (NVO)

Details The Galaxy Interaction and Merger Rates: A Science Scenario for a National Virtual Observatory (NVO) The Galaxy Interaction and Merger Rates: A Science Scenario for a National Virtual Observatory (NVO)

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dda....31.1101b&link_type=abstract

American Astronomical Society, DDA Meeting #31, #11.01; Bulletin of the American Astronomical Society, Vol. 32, p.867

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Scientific paper

We have analyzed the multiplicity function of the galaxies in the recently published UZC (Updated Zwicky Catalog). We have determined the frequency of pairs, triples, and other small-N groupings. Of the 19,000+ galaxies in the catalog, there are 1600 multiple systems with known redshifts z<0.08. We use this sample to estimate the Galaxy Interaction Rate (8%) and Merger Rate ( 0.4 major mergers per galaxy per Hubble time) in the local universe and to determine properties of the multiple galaxies. Archived data and astronomical catalog information available on-line from NASA's ADC (Astronomical Data Center) and from NED (NASA Extragalactic Database) are used to provide a firm physical basis for the interaction interpretation of these multiple galaxy systems. This project represents a typical research scenario that will be enabled through the implementation of a National Virtual Observatory (NVO). The envisioned NVO would be accessible from any astronomer's desktop. The data and metadata holdings of such on-line archives as ADC and NED will provide valuable information and database content for the NVO. The NVO will enable more complicated multi-spectral archival research investigations and cross-survey correlations from the impending multi-terabyte data avalanche coming from existing and future digital sky surveys (e.g., Sloan, 2MASS, DPOSS, NVSS, GALEX, FAME). (This research was supported under NASA contract NAS5-98156.)

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