Determination of the Hubble Constant, the Intrinsic Scatter of Luminosities of Type Ia Supernovae, and Evidence for Nonstandard Dust in Other Galaxies

Wang, Xiaofeng; Wang, Lifan; Pain, R.; Xu, Zhiyong; Li, Zongwei

doi:10.1086/504312

Cited by 89 publications

(103 citation statements)

References 104 publications

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“…These results are consistent with previous studies (e.g. RB ∼ 3.5, Phillips et al 1999;Knop et al 2003;Altavilla et al 2004; RB ∼ 3.3, Wang et al 2006; RV = 1.75 ± 0.27, Nobili and Goobar 2008; RV = 2.2, Kessler et al 2010), which find values of R are smaller than the standard Galactic value.…”

Section: Extinction Law Of Host Galaxy Dustsupporting

confidence: 93%

Photometric properties of intermediate-redshift Type Ia supernovae observed by the Sloan Digital Sky Survey-II Supernova Survey

Doi¹,

Yasuda²,

Kuncarayakti³

et al. 2016

Mon. Not. R. Astron. Soc.

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We have analyzed multi-band light curves of 328 intermediate redshift (0.05 ≤ z < 0.24) type Ia supernovae (SNe Ia) observed by the Sloan Digital Sky Survey-II Supernova Survey (SDSS-II SN Survey). The multi-band light curves were parameterized by using the Multi-band Stretch Method, which can simply parameterize light curve shapes and peak brightness without dust extinction models. We found that most of the SNe Ia which appeared in red host galaxies (u − r > 2.5) don't have a broad light curve width and the SNe Ia which appeared in blue host galaxies (u − r < 2.0) have a variety of light curve widths. The Kolmogorov-Smirnov test shows that the colour distribution of SNe Ia appeared in red / blue host galaxies is different (significance level of 99.9%). We also investigate the extinction law of host galaxy dust. As a result, we find the value of R v derived from SNe Ia with medium light curve width is consistent with the standard Galactic value. On the other hand, the value of R v derived from SNe Ia that appeared in red host galaxies becomes significantly smaller. These results indicate that there may be two types of SNe Ia with different intrinsic colours, and they are obscured by host galaxy dust with two different properties.

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Section: Extinction Law Of Host Galaxy Dustsupporting

confidence: 93%

Photometric properties of intermediate-redshift Type Ia supernovae observed by the Sloan Digital Sky Survey-II Supernova Survey

Doi¹,

Yasuda²,

Kuncarayakti³

et al. 2016

Mon. Not. R. Astron. Soc.

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“…Thus, owing to systematic effects, the intrinsic dispersion in the peak brightness remains smaller than ∼0.2 mag depending on the specific filter. As a consequence, the distance measurement uncertainty is at most 10% (Wang et al 2006). Being less affected by interstellar absorption, the nearinfrared observations show that SNe Ia are generally quite homogeneous in this wavelength range at the level of ∼0.15 mag (Meikle 2000;Krisciunas et al 2004a;Wood-Vasey et al 2008;Folatelli et al 2010), leading to distance estimates with an accuracy higher than 7%.We note that the scatter in the Hubble diagram indicated that very precise relative distances can be obtained by means of SNe Ia.…”

Section: Introductionmentioning

confidence: 61%

“…The inspection of the absolute magnitudes at peak in the optical bands leads to the conclusion that the corrected peak luminosity of SN 2008fv is indistinguishable, within the uncertainties, from that of the mean of the normal SNe Ia (Wang et al 2006). We also note that SN 2008fv is less luminous of ∼0.1 mag than SN 2000E.…”

Section: The Distance To Ngc 3147 and The Luminosity Of Sn 2008fvmentioning

confidence: 94%

The slowly declining type Ia supernova 2008fv and the near-infrared second maximum

Biscardi

Brocato

Arkharov

et al. 2012

A&A

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Aims. We present optical and near-infrared (NIR) photometry of supernova (SN) 2008fv and a brief investigation of SN type Ia to search for possible correlations between the properties of NIR light curves and the optical decline rate. Methods. We analyse our BVRI and JHK observations to derive light curves (LCs), colour curves, and the bolometric behaviour of SN 2008fv. Data range from about five days before to two months after maximum. We also collect a database of the main characteristics of NIR LCs of SNe Ia available in literature. Results. We find close similarities between the observed LCs of the SN event studied here and SN 2000E. SN 2008fv is a slow-declining SNe Ia with a post-maximum decline of Δm 15,B = 0.96 ± 0.08 mag and a B-band maximum luminosity of M B,0 = −19.40 ± 0.1 mag, close to the value of normal SNe Ia. The optical and NIR data allow us to constrain the host galaxy reddening of NGC 3147, E(B−V) = 0.22 ± 0.05 mag and its distance μ = 33.2 ± 0.1 mag. Furthermore, we derive a synthesized 56 Ni mass of about 0.7 M , by using the well-known relation between the maximum luminosity of the uvoir bolometric light curve and the initial content of 56 Ni. We investigate the correlation between the NIR characteristics of LCs and optical properties by collecting data of a sample of 40 SNe. We derive quantitative relationships involving the epoch of the secondary maximum in the JHK bands and the decline rate Δm 15 (B). Further, we find no correlations between Δm 15 measured in the JHK bands and the optical Δm 15 (B). In contrast, quite evident correlations with the Δm 15 (B) and Δm 40 (J)/Δm 15 (H).

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“…We checked the types of their host galaxies and found that apart from the host galaxy of SN 2005cl (MCG-01-39-003), which is a S0 galaxy (Wang et al 2009a;Bufano et al 2009), they are both spiral galaxies, i.e. the host galaxy of SN 2001el (NGC 1448) is a Scd galaxy (Wang et al 2003(Wang et al , 2006 and the host galaxy of SN 2001am (NGC 2811) is a Sa galaxy (Bufano et al 2009). The progenitor of SN 2005cl may therefore belong to an old population, but we are unable to infer any information about the population of the other SNe Ia.…”

Section: Agementioning

confidence: 99%

The envelope mass of red giant donors in type Ia supernova progenitors

Meng¹,

Yang²

2010

A&A

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Context. The single degenerate model is the most widely accepted progenitor model of type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf (CO WD) accretes hydrogen-rich material from a main sequence or a slightly evolved star (WD +MS) or from a red giant star (WD + RG), to increase its mass and explodes when approaching the Chandrasekhar mass. The explosion ejecta may impact the envelope of and strip off some hydrogen-rich material from the companion. The stripped-off hydrogen-rich material may manifest itself by means of a hydrogen line in the nebular spectra of SNe Ia. However, no hydrogen line is detected in the nebular spectra. Aims. We compute the remaining amounts of hydrogen in red giant donors to see whether the conflict between theory and observations can be overcome. Methods. By considering the mass-stripping effect from an optically thick wind and the effect of thermally unstable disk, we systematically carried out binary evolution calculation for WD + MS and WD + RG systems. Results. Here, we focus on the evolution of WD + RG systems. We found that some donor stars at the time of the supernova explosion contain little hydrogen-rich material on top of the helium core (as low as 0.017 M ), which is smaller than the upper limit to the amount derived from observations of material stripped-off by explosion ejecta. Thus, no hydrogen line is expected in the nebular spectra of these SN Ia. We also derive the distributions of the envelope mass and the core mass of the companions from WD + RG channel at the moment of a supernova explosion by adopting a binary population synthesis approach. We rarely find a RG companion with a very low-mass envelope. Furthermore, our models imply that the remnant of the WD + RG channel emerging after the supernova explosion is a single low-mass white dwarf (0.15−0.30 M ). Conclusions. The absence of a hydrogen line in nebular spectra of SNe Ia provides support to the proposal that the WD + RG system is the progenitor of SNe Ia.

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Determination of the Hubble Constant, the Intrinsic Scatter of Luminosities of Type Ia Supernovae, and Evidence for Nonstandard Dust in Other Galaxies

Cited by 89 publications

References 104 publications

Photometric properties of intermediate-redshift Type Ia supernovae observed by the Sloan Digital Sky Survey-II Supernova Survey

Photometric properties of intermediate-redshift Type Ia supernovae observed by the Sloan Digital Sky Survey-II Supernova Survey

The slowly declining type Ia supernova 2008fv and the near-infrared second maximum

The envelope mass of red giant donors in type Ia supernova progenitors

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