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.

Kilde:

ESO

Om billedet

Id:eso0223c
Type:Observation
Udgivelsesdato:23. august 2002
Relaterede pressemeddelelser:eso0223
Størrelse:1206 x 681 px

Om objektet

Navn:NGC 4254
Type:Local Universe : Star : Type : Wolf-Rayet
Local Universe : Nebula : Appearance : Emission : H II Region
Local Universe : Galaxy : Type : Spiral
Afstand:50 million lysår
Kategori:Galaxies
Nebulae
Stars

Billedformater

Stor JPEG
92,2 KB
Skrærm JPEG
76,0 KB

Farver & filtre

BåndTeleskop
OptiskVery Large Telescope
FORS1