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Spectrum of HII region -014+081 in NGC 4254
Observational evidence of the presence of hot and massive "Wolf-Rayet" stars in a metal-rich H II region (designated "-014+081") in the spiral galaxy NGC 4254, a member of the Virgo cluster of galaxies at a distance of about 50 million light-years. Comparison spectra of two types of Wolf-Rayet stars (WC and WN) in the Milky Way galaxy are shown. The characteristic spectral features of ionized helium (He II) and double and triple ionized carbon (C III, C IV) are identical.
Källa:ESO
Om bilden
ID: | eso0223c |
Typ: | Observation |
Publiceringsdatum: | 23 augusti 2002 |
Relaterade pressmeddelanden: | eso0223 |
Storlek: | 1206 x 681 px |
Om objektet
Namn: | NGC 4254 |
Typ: | Local Universe : Star : Type : Wolf-Rayet Local Universe : Nebula : Appearance : Emission : H II Region Local Universe : Galaxy : Type : Spiral |
Avstånd: | 50 miljon ljusår |
Kategori: | Galaxies Nebulae Stars |
Färger och filter
Band | Teleskop |
---|---|
Synligt ljus | Very Large Telescope FORS1 |