Details

Autor(en) / Beteiligte

• Fruchter, A. S
• Levan, A. J
• Strolger, L
• Vreeswijk, P. M
• Thorsett, S. E
• Bersier, D
• Burud, I
• Castro Cerón, J. M
• Castro-Tirado, A. J
• Conselice, C
• Dahlen, T
• Ferguson, H. C
• Fynbo, J. P. U
• Garnavich, P. M
• Gibbons, R. A
• Gorosabel, J
• Gull, T. R
• Hjorth, J
• Holland, S. T
• Kouveliotou, C
• Levay, Z
• Livio, M
• Metzger, M. R
• Nugent, P. E
• Petro, L
• Pian, E
• Rhoads, J. E
• Riess, A. G
• Sahu, K. C
• Smette, A
• Tanvir, N. R
• Wijers, R. A. M. J
• Woosley, S. E

Titel

Long γ-ray bursts and core-collapse supernovae have different environments

Ist Teil von

• Nature, 2006-05, Vol.441 (7092), p.463-468

Ort / Verlag

London: Nature Publishing

Erscheinungsjahr

2006

Link zum Volltext

Quelle

EBSCOhost Psychology and Behavioral Sciences Collection

Beschreibungen/Notizen

• When massive stars exhaust their fuel, they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion, this stellar collapse also powers an even more brilliant relativistic explosion known as a long-duration gamma-ray burst. One would then expect that these long gamma-ray bursts and core-collapse supernovae should be found in similar galactic environments. Here we show that this expectation is wrong. We find that the gamma-ray bursts are far more concentrated in the very brightest regions of their host galaxies than are the core-collapse supernovae. Furthermore, the host galaxies of the long gamma-ray bursts are significantly fainter and more irregular than the hosts of the core-collapse supernovae. Together these results suggest that long-duration gamma-ray bursts are associated with the most extremely massive stars and may be restricted to galaxies of limited chemical evolution. Our results directly imply that long gamma-ray bursts are relatively rare in galaxies such as our own Milky Way.