Physical Dust Models for the Extinction Toward Supernova 2014j in M82

Jian, Gao; Jiang, Biwei; Li, Aigen; Li, Jun

doi:10.1088/2041-8205/807/2/l26

Cited by 34 publications

(37 citation statements)

References 49 publications

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“…SN1998bu: The two nebular spectra from Cappellaro et al (2001) do not have any specific mention in that Gao et al (2015); Brown et al (2015) manuscript, however, the reference on WiseRep points to this paper. Thus, we include the reference, but acknowledge we could not verify this paper was the true source for these spectra.…”

Section: B2 Special Casesmentioning

confidence: 95%

Nebular spectra of 111 Type Ia supernovae disfavour single-degenerate progenitors

Tucker

Shappee

Vallely

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We place statistical constraints on Type Ia supernova (SN Ia) progenitors using 227 nebular phase spectra of 111 SNe Ia. We find no evidence of stripped companion emission in any of the nebular phase spectra. Upper limits are placed on the amount of mass that could go undetected in each spectrum using recent hydrodynamic simulations. With these null detections, we place an observational 3σ upper limit on the fraction of SNe Ia that are produced through the classical H-rich non-degenerate companion scenario of < 5.5%. Additionally, we set a tentative 3σ upper limit on He star progenitor scenarios of < 6.4%, although further theoretical modelling is required. These limits refer to our most representative sample including normal, 91bg-like, 91Tlike, and "Super Chandrasekhar" SNe Ia but excluding SNe Iax and SNe Ia-CSM. As part of our analysis, we also derive a Nebular Phase Phillips Relation, which approximates the brightness of a SN Ia from 150 − 500 days after maximum using the peak magnitude and decline rate parameter ∆m 15 (B).

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Section: B2 Special Casesmentioning

confidence: 95%

Nebular spectra of 111 Type Ia supernovae disfavour single-degenerate progenitors

Tucker

Shappee

Vallely

et al. 2019

Monthly Notices of the Royal Astronomical Society

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“…However, recent detailed studies of dust extinction in the SNe Ia spectra revealed that this issue is more complicated than so far assumed and that the standard extinction corrections applied uniformly to the SNe Ia observations were too simplified. For example, unexpected complexities were detected in reddening, being characterized by a variety of extinction laws with R V going down to 1.4 (Amanullah et al 2014(Amanullah et al , 2015Gao et al 2015). Consequently, approximate reddening-based corrections might bias the calculated distance modulus and lead to misinterpretations and to erroneously neglecting the role of intergalactic dust in the SNe Ia dimming (Ménard et al 2010b this paper, which shows that the opaque universe model can fit the observations almost equally well as the ΛCDM model, if inverted in the whole redshift interval of the SNe Ia observations.…”

Section: Discussionmentioning

confidence: 99%

Universe opacity and Type Ia supernova dimming

Vavryčuk

2019

Monthly Notices of the Royal Astronomical Society: Letters

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In this paper, I revoke a debate about an origin of Type Ia supernova (SN Ia) dimming. I argue that except for a commonly accepted accelerating expansion of the Universe, a conceivable alternative for explaining this observation is universe opacity caused by light extinction by intergalactic dust, even though it is commonly assumed that this effect is negligible. Using data of the Union2.1 SN Ia compilation, I find that the standard ΛCDM model and the opaque universe model fit the SN Ia measurements at redshifts z < 1.4 comparably well. The optimum solution for the opaque universe model is characterized by the B-band intergalactic opacity λ B = 0.10 ± 0.03 Gpc −1 and the Hubble constant H 0 = 68.0 ± 2.5 km s −1 Mpc −1 . The intergalactic opacity is higher than that obtained from independent observations but still within acceptable limits. This result emphasizes that the issue of the accelerating expansion of the Universe as the origin of the SN Ia dimming is not yet definitely resolved. Obviously, the opaque universe model as an alternative to the ΛCDM model is attractive, because it avoids puzzles and controversies associated with dark energy and the accelerating expansion.

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“…for silicate dust, and (Gao et al 2013(Gao et al , 2015Wang et al 2014). In addition, f cs will be 0.3 when the fraction of gas-phase carbon is 50%.…”

Section: Dust Modelsmentioning

confidence: 99%

Dust extinction towards the type Ia supernova 2012cu in NGC 4772

Gao

Zhao

Jian

et al. 2020

Planetary and Space Science

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Using photometric and spectroscopic data of Supernova (SN) 2012cu, a fairly reddened type Ia supernova, we derived its color excess curves and probed the dust extinction in its host galaxy, NGC 4772. In order to derive the extinction as a function of wavelength (i.e., A λ ), we model the color excess curves of SN 2012cu in terms of dust models consisting of silicate and carbonaceous (graphite or amorphous carbon) dust. The modeled extinction law towards SN 2012cu extends flatly to the far-ultraviolet (UV) bands, which is much flatter than those of the Milky Way and Magellanic Clouds, and the 2175Å feature is very weak or absent. The flatness of the modeled extinction curve in the UV bands suggests a "grey" extinction law of the active galactic nucleus in the vicinity of the SN 2012cu-Earth line of sight. Our results indicate that the sizes of the dust in the ISM towards SN 2012cu in NGC 4772 are larger than those of the Milky Way and the Large Magellanic Cloud, and much larger than that of the Small Magellanic Cloud. The best fitting gives an observed visual extinction towards SN 2012cu of A V ≈ 2.6 mag, a reddening * Corresponding author of E(B − V ) ≈ 1.0 mag, with a total-to-selective extinction ratio R V ≈ 2.7, consistent with previous results.

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Physical Dust Models for the Extinction Toward Supernova 2014j in M82

Cited by 34 publications

References 49 publications

Nebular spectra of 111 Type Ia supernovae disfavour single-degenerate progenitors

Nebular spectra of 111 Type Ia supernovae disfavour single-degenerate progenitors

Universe opacity and Type Ia supernova dimming

Dust extinction towards the type Ia supernova 2012cu in NGC 4772

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