Journal ArticleDOI
Hubble's constant and exploding carbon-oxygen white dwarf models for Type I supernovae
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In this article, it was shown that the immediate progenitor of a Type I supernova (SN I) is thought to be a mass-accreting carbon-oxygen (C-O) white dwarf in a binary system and the amount of 56Ni synthesized, MNi, and the corresponding peak luminosity, Lmax, can be used with the observed Hubble diagram for SN I to determine the value of Hubble's constant, H0.Abstract:
The immediate progenitor of a Type I supernova (SN I) is thought to be a mass-accreting carbon–oxygen (C–O) white dwarf in a binary system When the mass of the white dwarf approaches the Chandrasekhar mass (14 M⊙) the C–O nuclear fuel ignites, part of the star is incinerated to radioactive 56Ni, and the thermonuclear energy completely disrupts the star The optical luminosity results from the trapping and thermalization of the γ rays and positrons emitted by the decay of 56Ni through 56Co to stable 56Fe The amount of 56Ni synthesized, MNi, and the corresponding peak luminosity, Lmax, can be used with the observed Hubble diagram for SN I to determine the value of Hubble's constant, H0 We argue here that if this model is correct, MNi is in the range 04–14 M⊙, the best estimate being 06 M⊙, and that H0 is in the range 39–73 km s−1 Mpc−1 with a best estimate of 59 km s−1 Mpc−1 This line of reasoning does not require knowledge of the temperature of the supernova and, therefore, is not subject to the uncertainties associated with attempts to determine supernova luminosities and distances by the Baade method1 It relies on the physical correctness of the model, which is subject to independent testsread more
Citations
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A Precise distance indicator: Type Ia supernova multicolor light curve shapes
TL;DR: In this paper, the authors used multicolor light-curve shapes (MLCSs) to estimate the luminosity, distance, and total line-of-sight extinction of Type Ia supernovae.
Journal ArticleDOI
BVRI Light Curves for 22 Type Ia Supernovae
Adam G. Riess,Robert P. Kirshner,Brian P. Schmidt,Saurabh Jha,Peter Challis,Peter M. Garnavich,Ann A. Esin,Christopher L. Carpenter,Randy Grashius,Rudolph E. Schild,Perry Berlind,John P. Huchra,Charles F. Prosser,Emilio E. Falco,Priscilla J. Benson,Cesar Briceno,Warren R. Brown,Nelson Caldwell,Ian P. Dell'Antonio,Alexei V. Filippenko,Alyssa A. Goodman,Norman A. Grogin,Ted Groner,John P. Hughes,Paul J. Green,Rolf A. Jansen,Jan T. Kleyna,Jane Luu,Lucas M. Macri,Brian McLeod,Kim K. McLeod,Brian R. McNamara,Brian McLean,Alejandra A. E. Milone,Joseph J. Mohr,Dan Moraru,Chien Y. Peng,Chien Y. Peng,J. Peters,Andrea Prestwich,Krzysztof Z. Stanek,Andy Szentgyorgyi,Ping Zhao,Ping Zhao +43 more
TL;DR: In this article, Johnson/Cousins B, V, R, and I photometric observations of 22 recent Type Ia supernovae (SNe Ia): SNe 1993ac, 1993ae, 1994M, 1994S, 1994T, 1994Q, 1994ae, 1995D, 1995E, 1995al, 1995ac, 1995ak, 1995bd, 1996C, 1996X, 1996Z, 1996ab, 1996ai, 1996bk, 1996bl, 1996bo, and 1996bv.
Journal ArticleDOI
The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
D. Andrew Howell,Mark Sullivan,Peter Nugent,Richard S. Ellis,Alex Conley,Damien Le Borgne,Raymond G. Carlberg,Julien Guy,David D. Balam,Stéphane Basa,D. Fouchez,Isobel Hook,Eric Hsiao,James D. Neill,Reynald Pain,K. Perrett,Christopher J. Pritchet +16 more
TL;DR: It is shown that the high-redshift supernova SNLS-03D3bb has an exceptionally high luminosity and low kinetic energy that both imply a super-Chandrasekhar-mass progenitor, which may provide an explanation for the observed trend that overluminous type Ia supernovae occur only in ‘young’ environments.
Journal ArticleDOI
The Carnegie Supernova Project: Analysis of the First Sample of Low-Redshift Type-Ia Supernovae
Gastón Folatelli,Gastón Folatelli,Mark M. Phillips,Christopher R. Burns,Carlos Contreras,Mario Hamuy,Wendy L. Freedman,S. E. Persson,Maximilian Stritzinger,Maximilian Stritzinger,Nicholas B. Suntzeff,Kevin Krisciunas,Luis Boldt,Sergio Gonzalez,Wojtek Krzeminski,Nidia Morrell,Miguel Roth,Francisco Salgado,Francisco Salgado,Barry F. Madore,Barry F. Madore,David Murphy,P. Wyatt,Weidong Li,Alexei V. Filippenko,Nicole Miller +25 more
TL;DR: In this article, an analysis of the first set of low-redshift (z < 0.08) Type Ia supernovae (SNe Ia) monitored by the Carnegie Supernova Project between 2004 and 2006 is presented.
Journal ArticleDOI
The Peculiar SN 2005hk: Do Some Type Ia Supernovae Explode as Deflagrations?* ** ***
Mark M. Phillips,Weidong Li,Joshua A. Frieman,Joshua A. Frieman,Sergei Blinnikov,Darren L. DePoy,J. L. Prieto,Peter Milne,Carlos Contreras,Gastón Folatelli,Nidia Morrell,Mario Hamuy,Nicholas B. Suntzeff,Miguel Roth,S. Gonzalez,Wojtek Krzeminski,Alexei V. Filippenko,Wendy L. Freedman,Ryan Chornock,Saurabh Jha,Saurabh Jha,Barry F. Madore,Barry F. Madore,S. E. Persson,Christopher R. Burns,P. Wyatt,David Murphy,Ryan J. Foley,Mohan Ganeshalingam,F. J. D. Serduke,Kevin Krisciunas,Bruce A. Bassett,Andrew C. Becker,Ben Dilday,Jason D. Eastman,Peter M. Garnavich,Jon A. Holtzman,Richard Kessler,Hubert Lampeitl,John Marriner,Stephan Frank,Jennifer L. Marshall,G. Miknaitis,Masao Sako,Donald P. Schneider,Kurt van der Heyden,Naoki Yasuda +46 more
TL;DR: In this article, photometry and optical spectroscopy of the Type Ia supernova (SN) 2005hk was performed and the spectra revealed that SN 2005 hk was nearly identical in its observed properties to SN 2002cx, which has been called the most peculiar known Type Iaa supernova and exhibited high-ionization SN 1991T-like premaximum spectra, yet low peak luminosities like that of SN 1991bg.
References
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Journal ArticleDOI
Accreting white dwarf models for type I supernovae. III. Carbon deflagration supernovae
TL;DR: In this article, the carbon deflagration model was proposed for Type I supernovae. But it is not a plausible model for Type II supernova, as the model is not suitable for the case of large nuclear energy release and the star is disrupted completely leaving no compact star remnant behind.
Journal ArticleDOI
Type I supernovae. I. Analytic solutions for the early part of the light curve
TL;DR: In this paper, a theoretical analysis of Type I supernovae is presented, showing that the homogeneity of spectral evolution is a necessary consequence of the thermonuclear model but only a possible consequence of a gravitational collapse model.
Journal ArticleDOI
H I, galaxy counts, and reddening: Variation in the gas-to-dust ratio, the extinction at high galactic latitudes, and a new method for determining galactic reddening
D. Burstein,C. Heiles +1 more
TL;DR: In this article, the extinction at the galactic poles, as determined by galaxy counts, is reexamined by using a new method to analyze galaxy counts and a compilation of reddenings for RR Lyrae stars and globular clusters.
Journal ArticleDOI
Type I Supernovae
J. C. Wheeler,R. P. Harkness +1 more
TL;DR: Several projects involving Type I supernovae and their impact on nucleosynthesis are described in this article, where a major effort is underway to compute the spectrum at epochs near maximum light.
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