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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.
Kredit:ESO
O snímku
| Id: | eso0223c |
| Typ: | Pozorování |
| Datum zveřejnění: | 23. srpna 2002 |
| Související články: | eso0223 |
| Velikost: | 1206 x 681 px |
O objektu
| Jméno: | NGC 4254 |
| Typ: | Local Universe : Star : Type : Wolf-Rayet Local Universe : Nebula : Appearance : Emission : H II Region Local Universe : Galaxy : Type : Spiral |
| Vzdálenost: | 50 milion světelné roky |
| Kategorie: | Galaxies Nebulae Stars |
Barvy & filtry
| Pásmo | Dalekohled |
|---|---|
| Optický | Very Large Telescope FORS1 |