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HD 110391


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The stellar population in the Wolf-Rayet knot in NGC 5430
Ultraviolet and optical spectra and optical imaging were obtained inorder to probe the stellar population in the NGC 5340 WR knot andclarify its relation to star formation elsewhere in the galaxy. Thebarred spiral NGC 5340 contains an extremely luminous H II regionshowing very strong He II and N III Wolf-Rayet emission features. Fromspectrophotometry over the range from 1200-7000 A limits on thereddening and effective temperature have been derived: T eff is between25,000 and 35,000 K. No UV emission lines are clearly detected. TheH-alpha linewidth implies a very short timescale for star formationhere.

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Observation and Astrometry data

Constellation:Canes Venatici
Right ascension:12h41m20.65s
Declination:+50°24'57.5"
Apparent magnitude:9.342
Proper motion RA:-78.7
Proper motion Dec:5.1
B-T magnitude:9.941
V-T magnitude:9.392

Catalogs and designations:
Proper Names
HD 1989HD 110391
TYCHO-2 2000TYC 3458-1939-1
USNO-A2.0USNO-A2 1350-08151101
HIPHIP 61913

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