Results 1 to 10 of about 8,434 (211)
Searching for Hydrogen in Type Ib Supernovae [PDF]
The Astrophysical Journal, 2010 We present synthetic spectral fits of the typical Type Ib SN 1999dn and the Hydrogen Rich Ib SN 2000H using the generalized non-local thermodynamic equilibrium stellar atmospheres code \phx.
Barbon +15 more
core +2 more sources
A Luminous and Fast-Expanding Type Ib Supernova SN 2012au [PDF]
The Astrophysical Journal, 2013 We present a set of photometric and spectroscopic observations of a bright Type Ib supernova SN 2012au from -6d until ~+150d after maximum. The shape of its early R-band light curve is similar to that of an average Type Ib/c supernova.
Akitaya, H. +17 more
core +2 more sources
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
openaire +2 more sources
The exceptionally bright Type Ib supernova 1991D [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 Photometric and spectroscopic observations of the peculiar Type Ib Supernova 1991D are presented. SN 1991D was exceptionally bright for a Type Ib supernova. The He I lines were rather weak and the velocity at the photosphere as a function of time was unusually low.
Benetti, S. +7 more
openaire +2 more sources
Estimating Ejecta Masses of Stripped-envelope Supernovae Using Late-time Light Curves
The Astrophysical Journal, 2023 Stripped-envelope supernovae (SESNe) are a subclass of core-collapse supernovae that are deficient in hydrogen (SN IIb, SN Ib) and possibly helium (SN Ic) in their spectra.
Annastasia Haynie, Anthony L. Piro
doaj +1 more source
Discovery of the Closest Ultra-stripped Supernova: SN 2021agco in UGC 3855
The Astrophysical Journal Letters, 2023 We present the discovery and studies of the helium-rich, fast-evolving supernova (SN) 2021agco at a distance of ∼40 Mpc. Its early-time flux is found to rise from half peak to the peak of −16.06 ± 0.42 mag in the r band within ${2.4}_{-1.0}^{+1.5}$ days,
Shengyu Yan +18 more
doaj +1 more source
The Iron Yield of Core-collapse Supernovae
The Astrophysical Journal, 2023 We present a systematic analysis of 191 stripped-envelope supernovae (SE SNe), aimed at computing their ^56 Ni masses from the luminosity in their radioactive tails ( ${M}_{\mathrm{Ni}}^{\mathrm{tail}}$ ) and/or in their maximum light, and the mean ^56 ...
Ósmar Rodríguez, Dan Maoz, Ehud Nakar
doaj +1 more source
SN 2020cpg: an energetic link between Type IIb and Ib supernovae [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Stripped-envelope supernovae (SE-SNe) show a wide variety of photometric and spectroscopic properties. This is due to the different potential formation channels and the stripping mechanism that allows for a large diversity within the progenitors outer envelope compositions. Here, the photometric and spectroscopic observations of
K Medler +20 more
openaire +7 more sources
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
doaj +1 more source
Progenitors of Type Ib Supernovae [PDF]
Symposium - International Astronomical Union, 1991 We argue that the progenitors of type Ib supernovae are moderately massive stars (M ~ 7 M⊙) in binary systems whereas the hypothesis that they originate from very massive stars (M > 20 M⊙) is not consistent with the observational evidence on SNIb.
Nino Panagia, Victoria G. Laidler
openaire +1 more source