Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982biton...3...69p&link_type=abstract
Instituto de Tonantzintla, Boletin, vol. 3, July 1982, p. 69-96.
Astronomy and Astrophysics
Astronomy
42
Astronomical Catalogs, Astronomical Maps, Emission Spectra, H Alpha Line, Orion Nebula, Variable Stars, Astronomical Coordinates, Flare Stars, Star Distribution, Stellar Color, Stellar Magnitude, Stellar Spectra
Scientific paper
The present catalog contains 534 H-alpha emission line stars in the region of the Orion Nebula (5 deg x 5 deg). A part of the listed stars (255) has been discovered in connection with the studies reported by Haro (1950, 1953). Haro also called attention to the occurrence of flare-ups in some of the emission lines, as well as to the fact that the intensity of the H-alpha emission lines varied strongly in a number of spectra. Subsequent to Haro's original search, a large number of observations of the Orion Nebula region have been carried out. As a result of these observations, 240 emission stars were added to Haro's (1953) original list. The catalog provides a list of all currently known H-alpha emission stars in the region of the Orion Nebula. Identification charts for the stars are also presented.
Chavira Enrique
Parsamian Elma S.
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