scholarly journals SDSS-II SUPERNOVA SURVEY: AN ANALYSIS OF THE LARGEST SAMPLE OF TYPE IA SUPERNOVAE AND CORRELATIONS WITH HOST-GALAXY SPECTRAL PROPERTIES

2016 ◽  
Vol 821 (2) ◽  
pp. 115 ◽  
Author(s):  
Rachel C. Wolf ◽  
Chris B. D’Andrea ◽  
Ravi R. Gupta ◽  
Masao Sako ◽  
John A. Fischer ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Type Ia ◽  
Ia Supernovae

Uniformity of (V−Near‐Infrared) Color Evolution of Type Ia Supernovae and Implications for Host Galaxy Extinction Determination

2000 ◽  
Vol 539 (2) ◽  
pp. 658-674 ◽  
Author(s):  
Kevin Krisciunas ◽  
N. C. Hastings ◽  
Karen Loomis ◽  
Russet McMillan ◽  
Armin Rest ◽  
...  
Keyword(s):  
Near Infrared ◽  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Color Evolution ◽  
Type Ia ◽  
Ia Supernovae

scholarly journals Binary Paths to Type Ia Supernovae Explosions: the Highlights

2011 ◽  
Vol 7 (S281) ◽  
pp. 341-350
Author(s):  
Lilia Ferrario
Keyword(s):  
Binary System ◽  
Main Channel ◽  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Definitive Answer ◽  
Type Ia ◽  
Nuclear Burning ◽  
External Galaxies ◽  
Pass Through ◽  
Ia Supernovae

AbstractThis symposium was focused on the hunt for the progenitors of Type Ia supernovae (SNe Ia). Is there a main channel for the production of SNe Ia? If so, are these elusive progenitors single degenerate or double degenerate systems? Although most participants seemed to favor the single degenerate channel, there was no general agreement on the type of binary system at play. An observational puzzle that was highlighted was the apparent paucity of supersoft sources in our Galaxy and also in external galaxies. The single degenerate channel (and as it was pointed out, quite possibly also the double degenerate channel) requires the binary system to pass through a phase of steady nuclear burning. However, the observed number of supersoft sources falls short by a factor of up to 100 in explaining the estimated birth rates of SNe Ia. Thus, are these supersoft sources somehow hidden away and radiating at different wavelengths, or are we missing some important pieces of this puzzle that may lead to the elimination of a certain class of progenitor? Another unanswered question concerns the dependence of SNe Ia luminosities on the age of their host galaxy. Several hypotheses were put forward, but none was singled out as the most likely explanation.It is fair to say that at the end of the symposium the definitive answer to the vexed progenitor question remained well and truly wide open.

scholarly journals The dependence of Type Ia Supernovae salt2 light-curve parameters on host galaxy morphology

2020 ◽  
Vol 499 (4) ◽  
pp. 5121-5135
Author(s):  
M V Pruzhinskaya ◽  
A K Novinskaya ◽  
N Pauna ◽  
P Rosnet
Keyword(s):  
Light Curve ◽  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Distance Modulus ◽  
Early Type ◽  
Late Type ◽  
Hubble Diagram ◽  
Type Ia ◽  
Ia Supernovae ◽  
Galaxy Morphology

ABSTRACT Type Ia Supernovae (SNe Ia) are widely used to measure distances in the Universe. Despite the recent progress achieved in SN Ia standardization, the Hubble diagram still shows some remaining intrinsic dispersion. The remaining scatter in supernova luminosity could be due to the environmental effects that are accounted for as mass step correction in the current cosmological analyses. In this work, we compare the local and global colour (U − V), the local star formation rate, and the host stellar mass to the host galaxy morphology. The observed trends suggest that the host galaxy morphology is a relevant parameter to characterize the SN Ia environment. Therefore, we study the influence of host galaxy morphology on light-curve parameters of SNe Ia from the pantheon cosmological supernova sample. We determine the Hubble morphological type of host galaxies for a subsample of 330 SNe Ia. We confirm that the salt2 stretch parameter x1 depends on the host morphology with the p-value ∼10−14. The supernovae with lower stretch value are hosted mainly by elliptical and lenticular galaxies. No correlation for the salt2 colour parameter c is found. We also examine Hubble diagram residuals for supernovae hosted by ‘early-type’ and ‘late-type’ morphological groups of galaxies. The analysis reveals that the mean distance modulus residual in early-type galaxies is smaller than the one in late-type galaxies, which means that early-type galaxies contain brighter supernovae after stretch and colour corrections. However, we do not observe any difference in the residual dispersion for these two morphological groups. The obtained results are in the line with other analyses showing environmental dependence of SN Ia light-curve parameters and luminosity. We confirm the importance of including a host galaxy parameter into the standardization procedure of SNe Ia for further cosmological studies.

scholarly journals Host Galaxy Mass Combined with Local Stellar Age Improve Type Ia Supernovae Distances

2021 ◽  
Vol 909 (1) ◽  
pp. 28
Author(s):  
B. M. Rose ◽  
D. Rubin ◽  
L. Strolger ◽  
P. M. Garnavich
Keyword(s):  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Type Ia ◽  
Ia Supernovae

scholarly journals Swift UVOT grism observations of nearby Type Ia supernovae – II. Probing the progenitor metallicity of SNe Ia with ultraviolet spectra

2019 ◽  
Vol 491 (4) ◽  
pp. 5897-5910 ◽  
Author(s):  
Y-C Pan ◽  
R J Foley ◽  
D O Jones ◽  
A V Filippenko ◽  
N P M Kuin
Keyword(s):  
Uv Spectra ◽  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Theoretical Predictions ◽  
Type Ia ◽  
Flux Level ◽  
Ia Supernovae ◽  
Future Work ◽  
First Time ◽  
Effect Of Light

ABSTRACT Ultraviolet (UV) observations of Type Ia supernovae (SNe Ia) are crucial for constraining the properties of their progenitor systems. Theoretical studies predicted that the UV spectra, which probe the outermost layers of an SN, should be sensitive to the metal content of the progenitor. Using the largest SN Ia UV (λ < 2900 Å) spectroscopic sample obtained from Neil Gehrels Swift Observatory, we investigate the dependence of UV spectra on metallicity. For the first time, our results reveal a correlation (∼2σ) between SN Ia UV flux and host-galaxy metallicities, with SNe in more metal-rich galaxies (which are likely to have higher progenitor metallicities) having lower UV flux level. We find that this metallicity effect is only significant at short wavelengths (λ ≲ 2700 Å), which agrees well with the theoretical predictions. We produce UV spectral templates for SNe Ia at peak brightness. With our sample, we could disentangle the effect of light-curve shape and metallicity on the UV spectra. We also examine the correlation between the UV spectra and SN luminosities as parametrized by Hubble residuals. However, we do not see a significant trend with Hubble residuals. This is probably due to the large uncertainties in SN distances, as the majority of our sample members are extremely nearby (redshift z ≲ 0.01). Future work with SNe discovered in the Hubble flow will be necessary to constrain a potential metallicity bias on SN Ia cosmology.

scholarly journals The Hubble diagram of type Ia supernovae as a function of host galaxy morphology

2003 ◽  
Vol 340 (4) ◽  
pp. 1057-1075 ◽  
Author(s):  
M. Sullivan ◽  
R. S. Ellis ◽  
G. Aldering ◽  
R. Amanullah ◽  
P. Astier ◽  
...  
Keyword(s):  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Hubble Diagram ◽  
Type Ia ◽  
Ia Supernovae ◽  
Galaxy Morphology

scholarly journals Influence of host galaxy morphology on the properties of Type Ia supernovae from JLA and Pantheon compilations

2020 ◽  
Author(s):  
Maria Pruzhinskaya ◽  
Alexandra Novinskaya ◽  
Philippe Rosnet ◽  
Nicoleta Pauna
Keyword(s):  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Type Ia ◽  
Ia Supernovae ◽  
Galaxy Morphology

scholarly journals A new measurement of the Hubble constant using Type Ia supernovae calibrated with surface brightness fluctuations

2021 ◽  
Vol 647 ◽  
pp. A72 ◽  
Author(s):  
Nandita Khetan ◽  
Luca Izzo ◽  
Marica Branchesi ◽  
Radosław Wojtak ◽  
Michele Cantiello ◽  
...  
Keyword(s):  
Surface Brightness ◽  
Hubble Constant ◽  
Absolute Magnitude ◽  
Host Galaxy ◽  
Type Ia Supernovae ◽  
Distance Measurements ◽  
Surface Brightness Fluctuations ◽  
Type Ia ◽  
Red Giant ◽  
Ia Supernovae

We present a new calibration of the peak absolute magnitude of Type Ia supernovae (SNe Ia) based on the surface brightness fluctuations (SBF) method, aimed at measuring the value of the Hubble constant. We build a sample of calibrating anchors consisting of 24 SNe hosted in galaxies that have SBF distance measurements. Applying a hierarchical Bayesian approach, we calibrate the SN Ia peak luminosity and extend the Hubble diagram into the Hubble flow by using a sample of 96 SNe Ia in the redshift range 0.02 < z < 0.075, which was extracted from the Combined Pantheon Sample. We estimate a value of H0 = 70.50 ± 2.37 (stat.) ± 3.38 (sys.) km s−1 Mpc−1 (i.e., 3.4% stat., 4.8% sys.), which is in agreement with the value obtained using the tip of the red giant branch calibration. It is also consistent, within errors, with the value obtained from SNe Ia calibrated with Cepheids or the value inferred from the analysis of the cosmic microwave background. We find that the SNe Ia distance moduli calibrated with SBF are on average larger by 0.07 mag than those calibrated with Cepheids. Our results point to possible differences among SNe in different types of galaxies, which could originate from different local environments and/or progenitor properties of SNe Ia. Sampling different host galaxy types, SBF offers a complementary approach to using Cepheids, which is important in addressing possible systematics. As the SBF method has the ability to reach larger distances than Cepheids, the impending entry of the Vera C. Rubin Observatory and JWST into operation will increase the number of SNe Ia hosted in galaxies where SBF distances can be measured, making SBF measurements attractive for improving the calibration of SNe Ia, as well as in the estimation of H0.

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