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First Stars – Type Ib Supernovae Connection
| Content Provider | Scilit |
|---|---|
| Author | Nomoto, Ken'ichi Tanaka, Masaomi Kamiya, Yasuomi Tominaga, Nozomu Maeda, Keiichi |
| Copyright Year | 2008 |
| Description | The very peculiar abundance patterns observed in extremely metal-poor (EMP) stars can not be explained by conventional normal supernova nucleosynthesis but can be well-reproduced by nucleosynthesis in hyper-energetic and hyper-aspherical explosions, i.e., Hypernovae (HNe). Previously, such HNe have been observed only as Type Ic supernovae. Here, we examine the properties of recent Type Ib supernovae (SNe Ib). In particular, SN Ib 2008D associated with the luminous X-ray transient 080109 is found to be a more energetic explosion than normal core-collapse supernovae. We estimate that the progenitor's main sequence mass is $M_{MS}$ = 20 − $25M_{⊙}$ with an explosion of kinetic energy of $E_{K}$ ~ 6.0 × $10^{51}$ erg. These properties are intermediate between those of normal SNe and hypernovae associated with gamma-ray bursts. Therefore, such energetic SNe Ib could also make an important contribution to the chemical enrichment in the early Universe. |
| Related Links | http://arxiv.org/pdf/0905.2274 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/2A7810556B925FCE5F1686832EA38F55/S1743921308024794a.pdf/div-class-title-first-stars-type-ib-supernovae-connection-div.pdf |
| Ending Page | 188 |
| Page Count | 7 |
| Starting Page | 182 |
| ISSN | 17439213 |
| e-ISSN | 17439221 |
| DOI | 10.1017/s1743921308024794 |
| Journal | Proceedings of the International Astronomical Union |
| Issue Number | S255 |
| Volume Number | 4 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2008-06-01 |
| Access Restriction | Open |
| Subject Keyword | Proceedings of the International Astronomical Union Astronomy and Astrophysics Bursts Nuclear Reactions Abundances Population Ii General |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |
