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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.
Crédit:ESO
À propos de l'image
Identification: | eso0223c |
Type: | Observation |
Date de publication: | 23 août 2002 |
Communiqués de presse en rapport: | eso0223 |
Taille: | 1206 x 681 px |
À propos de l'objet
Nom: | NGC 4254 |
Type: | Local Universe : Star : Type : Wolf-Rayet Local Universe : Nebula : Appearance : Emission : H II Region Local Universe : Galaxy : Type : Spiral |
Distance: | 50 million années lumière |
Catégorie: | Galaxies Nebulae Stars |
Couleurs & filtres
Domaine | Télescope |
---|---|
Visible | Very Large Telescope FORS1 |