scholarly journals THE GOLDEN STANDARD TYPE Ia SUPERNOVA 2005cf: OBSERVATIONS FROM THE ULTRAVIOLET TO THE NEAR-INFRARED WAVEBANDS

2009 ◽  
Vol 697 (1) ◽  
pp. 380-408 ◽  
Author(s):  
X. Wang ◽  
W. Li ◽  
A. V. Filippenko ◽  
R. J. Foley ◽  
R. P. Kirshner ◽  
...  
Keyword(s):  
Near Infrared ◽  
Standard Type ◽  
Type Ia Supernova ◽  
Type Ia ◽  
Golden Standard

scholarly journals Interpreting the near-infrared spectra of the ‘golden standard’ Type Ia supernova 2005cf

2012 ◽  
Vol 427 (2) ◽  
pp. 994-1003 ◽  
Author(s):  
E. E. E. Gall ◽  
S. Taubenberger ◽  
M. Kromer ◽  
S. A. Sim ◽  
S. Benetti ◽  
...  
Keyword(s):  
Infrared Spectra ◽  
Near Infrared ◽  
Standard Type ◽  
Type Ia Supernova ◽  
Near Infrared Spectra ◽  
Type Ia ◽  
Golden Standard

Early Blue Excess from the Type Ia Supernova 2017cbv

2017 ◽  
Vol 14 (S339) ◽  
pp. 47-49
Author(s):  
G. Hosseinzadeh
Keyword(s):  
Light Curve ◽  
Standard Type ◽  
Circumstellar Material ◽  
Type Ia Supernova ◽  
Unusual Distribution ◽  
Photometric Observations ◽  
Type Ia ◽  
Optical Light Curve ◽  
Ia Supernovae

AbstractThis paper presented very early, high-cadence photometric observations of the nearby Type Ia SN 2017cbv. The light-curve is unique in that during the first five days of observations it has a blue bump in the U, B, and g bands which is clearly resolved by virtue of our photometric cadence of 5.7 hr during that time span. We modelled the light-curve as the combination of an early shock of the supernova ejecta against a non-degenerate companion star plus a standard Type Ia supernova component. Our best-fit model suggested the presence of a subgiant star 56 R⊙ from the exploding white dwarf, although that number is highly model-dependent. While the model matches the optical light-curve well, it over-predicts the flux expected in the ultraviolet bands. That may indicate that the shock is not a blackbody, perhaps because of line blanketing in the UV. Alternatively, it could point to another physical explanation for the optical blue bump, such as interaction with circumstellar material or an unusual distribution of the element Ni. Early optical spectra of SN 2017cbv show strong carbon absorption as far as day –13 with respect to maximum light, suggesting that the progenitor system contained a significant amount of unburnt material. These results for SN 2017cbv illustrate the power of early discovery and intense follow-up of nearby supernovæ for resolving standing questions about the progenitor systems and explosion mechanisms of Type Ia supernovæ.

scholarly journals A type Ia supernova at the heart of superluminous transient SN 2006gy

Science ◽  
2020 ◽  
Vol 367 (6476) ◽  
pp. 415-418 ◽  
Author(s):  
Anders Jerkstrand ◽  
Keiichi Maeda ◽  
Koji S. Kawabata
Keyword(s):  
Binary System ◽  
Light Curve ◽  
Supernova Explosion ◽  
Large Mass ◽  
Late Time ◽  
Standard Type ◽  
Circumstellar Material ◽  
Common Envelope ◽  
Type Ia Supernova ◽  
Type Ia

Superluminous supernovae radiate up to 100 times more energy than normal supernovae. The origin of this energy and the nature of the stellar progenitors of these transients are poorly understood. We identify neutral iron lines in the spectrum of one such supernova, SN 2006gy, and show that they require a large mass of iron (≳0.3 solar masses) expanding at 1500 kilometers per second. By modeling a standard type Ia supernova hitting a shell of circumstellar material, we produce a light curve and late-time iron-dominated spectrum that match the observations of SN 2006gy. In such a scenario, common envelope evolution of a progenitor binary system can synchronize envelope ejection and supernova explosion and may explain these bright transients.

scholarly journals SN 2012fr: Ultraviolet, Optical, and Near-infrared Light Curves of a Type Ia Supernova Observed within a Day of Explosion

2018 ◽  
Vol 859 (1) ◽  
pp. 24 ◽  
Author(s):  
Carlos Contreras ◽  
M. M. Phillips ◽  
Christopher R. Burns ◽  
Anthony L. Piro ◽  
B. J. Shappee ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Curves ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Type Ia Supernova ◽  
Type Ia

scholarly journals TYPE Ia SUPERNOVA LIGHT CURVE INFERENCE: HIERARCHICAL MODELS IN THE OPTICAL AND NEAR-INFRARED

2011 ◽  
Vol 731 (2) ◽  
pp. 120 ◽  
Author(s):  
Kaisey S. Mandel ◽  
Gautham Narayan ◽  
Robert P. Kirshner
Keyword(s):  
Light Curve ◽  
Hierarchical Models ◽  
Near Infrared ◽  
Type Ia Supernova ◽  
Type Ia

scholarly journals OPTICAL AND NEAR-INFRARED POLARIMETRY OF HIGHLY REDDENED Type Ia SUPERNOVA 2014J: PECULIAR PROPERTIES OF DUST IN M82

2014 ◽  
Vol 795 (1) ◽  
pp. L4 ◽  
Author(s):  
K. S. Kawabata ◽  
H. Akitaya ◽  
M. Yamanaka ◽  
R. Itoh ◽  
K. Maeda ◽  
...  
Keyword(s):  
Near Infrared ◽  
Type Ia Supernova ◽  
Type Ia

scholarly journals Red and Reddened: Ultraviolet through Near-infrared Observations of Type Ia Supernova 2017erp

2019 ◽  
Vol 877 (2) ◽  
pp. 152 ◽  
Author(s):  
Peter J. Brown ◽  
Griffin Hosseinzadeh ◽  
Saurabh W. Jha ◽  
David Sand ◽  
Ethan Vieira ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Observations ◽  
Type Ia Supernova ◽  
Type Ia

scholarly journals THE EARLIEST NEAR-INFRARED TIME-SERIES SPECTROSCOPY OF A TYPE Ia SUPERNOVA

2013 ◽  
Vol 766 (2) ◽  
pp. 72 ◽  
Author(s):  
E. Y. Hsiao ◽  
G. H. Marion ◽  
M. M. Phillips ◽  
C. R. Burns ◽  
C. Winge ◽  
...  
Keyword(s):  
Time Series ◽  
Near Infrared ◽  
Type Ia Supernova ◽  
Type Ia

scholarly journals Using late-time optical and near-infrared spectra to constrain Type Ia supernova explosion properties

2018 ◽  
Vol 477 (3) ◽  
pp. 3567-3582 ◽  
Author(s):  
K Maguire ◽  
S A Sim ◽  
L Shingles ◽  
J Spyromilio ◽  
A Jerkstrand ◽  
...  
Keyword(s):  
Infrared Spectra ◽  
Near Infrared ◽  
Supernova Explosion ◽  
Late Time ◽  
Type Ia Supernova ◽  
Near Infrared Spectra ◽  
Type Ia

scholarly journals Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type Ia supernova 2016hnk

2019 ◽  
Vol 630 ◽  
pp. A76 ◽  
Author(s):  
L. Galbany ◽  
C. Ashall ◽  
P. Höflich ◽  
S. González-Gaitán ◽  
S. Taubenberger ◽  
...  
Keyword(s):  
Near Infrared ◽  
Local Environment ◽  
Host Galaxy ◽  
Integral Field Spectroscopy ◽  
Type Ia Supernova ◽  
Complete Dataset ◽  
The Galaxy ◽  
Type Ia ◽  
Peculiar Object ◽  
One Year

Aims. We present a comprehensive dataset of optical and near-infrared photometry and spectroscopy of type Ia supernova (SN) 2016hnk, combined with integral field spectroscopy (IFS) of its host galaxy, MCG -01-06-070, and nearby environment. Our goal with this complete dataset is to understand the nature of this peculiar object. Methods. Properties of the SN local environment are characterized by means of single stellar population synthesis applied to IFS observations taken two years after the SN exploded. We performed detailed analyses of SN photometric data by studying its peculiar light and color curves. SN 2016hnk spectra were compared to other 1991bg-like SNe Ia, 2002es-like SNe Ia, and Ca-rich transients. In addition, we used abundance stratification modeling to identify the various spectral features in the early phase spectral sequence and also compared the dataset to a modified non-LTE model previously produced for the sublumnious SN 1999by. Results. SN 2016hnk is consistent with being a subluminous (MB = −16.7 mag, sBV=0.43 ± 0.03), highly reddened object. The IFS of its host galaxy reveals both a significant amount of dust at the SN location, residual star formation, and a high proportion of old stellar populations in the local environment compared to other locations in the galaxy, which favors an old progenitor for SN 2016hnk. Inspection of a nebular spectrum obtained one year after maximum contains two narrow emission lines attributed to the forbidden [Ca II] λλ7291,7324 doublet with a Doppler shift of 700 km s−1. Based on various observational diagnostics, we argue that the progenitor of SN 2016hnk was likely a near Chandrasekhar-mass (MCh) carbon-oxygen white dwarf that produced 0.108 M⊙ of 56Ni. Our modeling suggests that the narrow [Ca II] features observed in the nebular spectrum are associated with 48Ca from electron capture during the explosion, which is expected to occur only in white dwarfs that explode near or at the MCh limit.

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