A Survey of HII Regions in M31 (Pellet+ 1978)

Details A Survey of HII Regions in M31 (Pellet+ 1978) A Survey of HII Regions in M31 (Pellet+ 1978)

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..40310439p&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/31/439. Originally published in: 1978A&AS...31..439P

Physics

Galaxies: Optical, H Ii Regions, Surveys

Scientific paper

An H-alpha survey, using a focal reducer and narrow-band interference filters, has resulted in the detection of nearly a thousand HII regions in M31. The catalog gives their positions, dimensions, and surface brightnesses. The surface brightnesses are on an absolute scale; the photographic measures were calibrated by using photoelectric measures from two different sources. The detection limit reached corresponds to an emission measure of 40cm-6^pc at a temperature of 10000K.
(3 data files).

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