Compact blueshifted galaxy RMB 56 (1216+141)

Details Compact blueshifted galaxy RMB 56 (1216+141) Compact blueshifted galaxy RMB 56 (1216+141)

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977aj.....82..879k&link_type=abstract

Astronomical Journal, vol. 82, Nov. 1977, p. 879-885.

Astronomy and Astrophysics

Astronomy

10

Astronomical Spectroscopy, Compact Galaxies, Galactic Radiation, Ubv Spectra, Absorption Spectra, Astronomical Models, Balmer Series, Emission Spectra, H Ii Regions, Radio Astronomy

Scientific paper

RMB 56 is an unusually compact dwarf galaxy with an emission-line spectrum like that of an H II region in the outer arm of a spiral galaxy; it also has a strong continuum with Balmer absorption lines. UBV observations have been used to construct a model consisting of a central source with the colors of an isolated H II region which is concentric with an exponential disk similar to an Sm or Im galaxy seen face-on. This model is consistent with the idea of 'flashing' galaxies suggested by Searle and Sargent (1973). RMB 56 belongs to a group of blueshifted galaxies in the direction of the Virgo cluster. Its observed properties do not allow one to distinguish definitely between its being a member of the cluster at 20 Mpc (bolometric magnitude of about -15.4) or a foreground object at 7 Mpc (bolometric magnitude of approximately -13.2).

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