On the Relation between Peak Luminosity and Parent Population of Type Ia Supernovae: A New Tool for Probing the Ages of Distant Galaxies

2000 ◽  
Vol 542 (2) ◽  
pp. 588-596 ◽  
Author(s):  
Valentin D. Ivanov ◽  
Mario Hamuy ◽  
Philip A. Pinto
Keyword(s):  
Type Ia Supernovae ◽  
Parent Population ◽  
Distant Galaxies ◽  
Type Ia ◽  
Ia Supernovae ◽  
Peak Luminosity

On Variations in the Peak Luminosity of Type Ia Supernovae

2003 ◽  
Vol 590 (2) ◽  
pp. L83-L86 ◽  
Author(s):  
F. X. Timmes ◽  
Edward F. Brown ◽  
J. W. Truran
Keyword(s):  
Type Ia Supernovae ◽  
Type Ia ◽  
Ia Supernovae ◽  
Peak Luminosity

scholarly journals Towards a 1% measurement of the Hubble constant: accounting for time dilation in variable-star light curves

2019 ◽  
Vol 631 ◽  
pp. A165
Author(s):  
Richard I. Anderson
Keyword(s):  
Variable Star ◽  
Hubble Constant ◽  
Light Curves ◽  
Type Ia Supernovae ◽  
Host Galaxies ◽  
Pulsating Stars ◽  
Distant Galaxies ◽  
Type Ia ◽  
Absolute Magnitudes ◽  
Ia Supernovae

Assessing the significance and implications of the recently established Hubble tension requires the comprehensive identification, quantification, and mitigation of uncertainties and/or biases affecting H0 measurements. Here, we investigate the previously overlooked distance scale bias resulting from the interplay between redshift and Leavitt laws in an expanding Universe: Redshift-Leavitt bias (RLB). Redshift dilates oscillation periods of pulsating stars residing in supernova-host galaxies relative to periods of identical stars residing in nearby (anchor) galaxies. Multiplying dilated log P with Leavitt Law slopes leads to underestimated absolute magnitudes, overestimated distance moduli, and a systematic error on H0. Emulating the SH0ES distance ladder, we estimate an associated H0 bias of (0.27 ± 0.01)% and obtain a corrected H0 = 73.70 ± 1.40 km s−1 Mpc−1. RLB becomes increasingly relevant as distance ladder calibrations pursue greater numbers of ever more distant galaxies hosting both Cepheids (or Miras) and type-Ia supernovae. The measured periods of oscillating stars can readily be corrected for heliocentric redshift (e.g. of their host galaxies) in order to ensure H0 measurements free of RLB.

scholarly journals Data-driven approach to Type Ia supernovae: variable selection on the peak luminosity and clustering in visual analytics

2016 ◽  
Vol 699 ◽  
pp. 012009 ◽  
Author(s):  
Makoto Uemura ◽  
Koji S Kawabata ◽  
Shiro Ikeda ◽  
Keiichi Maeda ◽  
Hsiang-Yun Wu ◽  
...  
Keyword(s):  
Variable Selection ◽  
Visual Analytics ◽  
Data Driven ◽  
Type Ia Supernovae ◽  
Type Ia ◽  
Data Driven Approach ◽  
Ia Supernovae ◽  
Peak Luminosity

scholarly journals The Standardizability of Type Ia Supernovae in the Near-Infrared: Evidence for a Peak-Luminosity Versus Decline-Rate Relation in the Near-Infrared

2012 ◽  
Vol 124 (912) ◽  
pp. 114-127 ◽  
Author(s):  
ShiAnne Kattner ◽  
Douglas C. Leonard ◽  
Christopher R. Burns ◽  
M. M. Phillips ◽  
Gastón Folatelli ◽  
...  
Keyword(s):  
Near Infrared ◽  
Type Ia Supernovae ◽  
Decline Rate ◽  
Type Ia ◽  
Ia Supernovae ◽  
Rate Relation ◽  
Peak Luminosity

scholarly journals Spatial variation of fundamental constants: Testing models with thermonuclear supernovae

2018 ◽  
Vol 27 (09) ◽  
pp. 1850099 ◽  
Author(s):  
C. Negrelli ◽  
L. Kraiselburd ◽  
S. Landau ◽  
E. García-Berro
Keyword(s):  
Spatial Variation ◽  
Fundamental Constant ◽  
Dipole Model ◽  
Type Ia Supernovae ◽  
Fundamental Constants ◽  
Speed Of Light ◽  
Significant Difference ◽  
Type Ia ◽  
Ia Supernovae ◽  
Peak Luminosity

Since Dirac stated his Large Number Hypothesis the space-time variation of fundamental constants has been an active subject of research. Here we analyze the possible spatial variation of two fundamental constants: the fine structure constant [Formula: see text] and the speed of light [Formula: see text]. We study the effects of such variations on the luminosity distance and on the peak luminosity of Type Ia supernovae (SNe Ia). For this, we consider the change of each fundamental constant separately and discuss a dipole model for its variation. Elaborating upon our previous work, we take into account the variation of the peak luminosity of Type Ia supernovae resulting from the variation of each of these fundamental constants. Furthermore, we also include the change of the energy release during the explosion, which was not studied before in the literature. We perform a statistical analysis to compare the predictions of the dipole model for [Formula: see text] and [Formula: see text] variation with the Union 2.1 and JLA compilations of SNe Ia. Allowing the nuisance parameters of the distance estimator [Formula: see text] and the cosmological density matter [Formula: see text] to vary. As a result of our analysis, we obtain a first estimate of the possible spatial variation of the speed of light [Formula: see text]. On the other hand, we find that there is no significant difference between the several phenomenological models studied here and the standard cosmological model, in which fundamental constants do not vary at all. Thus, we conclude that the actual set of data of Type Ia supernovae does not allow to verify the hypothetical spatial variation of fundamental constants.

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