Results 21 to 30 of about 7,219,823 (215)
First Stars – Type Ib Supernovae Connection [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractThe 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,
Nomoto, Keni'chi +4 more
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Comparing the Locations of Supernovae to CO (2–1) Emission in Their Host Galaxies
The Astrophysical Journal, 2023 We measure the molecular gas environment near recent (
Ness Mayker Chen +21 more
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The Environments of Type Ib/c Supernovae [PDF]
Symposium - International Astronomical Union, 1996 Up to about 1985, supernovae (SNe) generally were placed into the two Minkowski classes, type I and type II, defined by the absence or presence, respectively, of hydrogen in their optical spectra. Around that time it was acknowledged that several type I SNe were systematically peculiar, both spectroscopically and photometrically (Elias et al.
S. D. Van Dyk +2 more
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The Astrophysical Journal, 2023 The relation between the progenitor mass and the kinetic energy of the explosion is a key toward revealing the explosion mechanism of stripped-envelope core-collapse supernovae (SESNe).
Qiliang Fang, Keiichi Maeda
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EARLY-TYPE HOST GALAXIES OF TYPE II AND Ib SUPERNOVAE [PDF]
The Astrophysical Journal, 2011 Recent studies find that some early-type galaxies host Type II or Ibc supernovae (SNe II, Ibc). This may imply recent star-formation activities in these SNe host galaxies, but a massive star origin of the SNe Ib so far observed in early-type galaxies has been questioned because of their intrinsic faintness and unusually strong Ca lines shown in the ...
Suh, Hyewon +3 more
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Bridging between Type IIb and Ib Supernovae: SN IIb 2022crv with a Very Thin Hydrogen Envelope
The Astrophysical Journal, 2023 We present optical, near-infrared, and radio observations of supernova (SN) SN IIb 2022crv. We show that it retained a very thin H envelope and transitioned from an SN IIb to an SN Ib; prominent H α seen in the pre-maximum phase diminishes toward the ...
Anjasha Gangopadhyay +28 more
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Possible binary progenitors for the Type Ib supernova iPTF13bvn [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 8 pages, 2 figures, Submitted to MNRAS, comment ...
Eldridge, J.J. +3 more
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On the origin of supernovae of type Ib [PDF]
International Astronomical Union Colloquium, 1988 The issue I want to discuss is this: supernovae observed during their photospheric phases display three distinct kinds of spectra - but there are four distinct chemical compositions that should be considered for the outer layers of exploding stars. What is the correspondence between the observed supernova type and the chemical composition?The three ...
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Explosion Parameters of SN 2013df and Properties of Its Progenitor Star [PDF]
, 2014 Type IIb supernovae have only recently been identified as a distinct flavor of core-collapse stellar explosions. These supernovae represent a transitional type between Type II and Type Ib supernovae.
Powell, Diana K. +1 more
core +1 more source
SN 2005bf: A Possible Transition Event Between Type Ib/c Supernovae and Gamma Ray Bursts [PDF]
, 2005 Accepted ApJ on 15 December 2005, 37 pages, 11 figures; minor changes after refereeing processWe present u'g'r'i'BV photometry and optical spectroscopy of the Type Ib/Ic SN 2005bf covering the first ~100 days following discovery.
Foley, Ryan J. +24 more
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