Sub-millimeter emission from type Ia supernova host galaxies at z=0.5

Clements, D. L.; Farrah, D.; Fox, M.; Rowan-Robinson, M.; Afonso, J.

doi:10.1016/j.newar.2003.12.040

Cited by 4 publications

(6 citation statements)

References 25 publications

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“…Drell et al (2000) concentrate on this question, concluding that the methodology of using Type 1a SNe as standard candles cannot discriminate between evolution and acceleration. Farrah et al (2004; see also Clements et al 2004) cite a history of work scaling optical frequency extinction with the The correlation statistic R(Á; A V ) between residuals and extinction. c The confidence level (P) to find R in a random sample.…”

Section: Quantificationmentioning

confidence: 99%

“…Drell, Loredo & Wasserman (2000) concentrate on this question, concluding that the methodology of using type 1a supernovas as standard candles cannot discriminate between evolution and acceleration. Farrah et al (2004) (see also Clements et al 2004) cite a history of work scaling optical frequency extinction with the sub-millimeter wavelength observations (Hildebrand 1983;Casey 1991;Bianchi 1999). They report extinction for 17 galaxies with z = 0.5 with sub-millimeter wavelengths.…”

Section: Modelmentioning

confidence: 99%

“…Furthermore, the abundance ratios of the progenitor stars may be different at different redshifts (Höflich et al 2000). Several studies emphasize that evolution effects cannot be ruled out (Falco et al 1999;Aguirre 1999;Farrah et al 2004;Clements et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Evidence for Evolution or Bias in Host Extinctions of Type 1a Supernovae at High Redshift

Jain

Ralston

2006

ApJ

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Type 1a supernova magnitudes conventionally include an additive parameter called the extinction coefficient. We find that the extinction coefficients of a popular ''gold'' set are well correlated with the deviation of magnitudes from Hubble diagrams. If the effect is due to bias, extinctions have been overestimated, which makes supernovas appear more dim. The statistical significance of the extinction-acceleration correlation has a random chance probability of less than one in a million. The hypothesis that extinction coefficients should be corrected empirically provides greatly improved fits to both accelerating and nonaccelerating models, with the independent feature of eliminating any significant correlation of residuals.

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Section: Quantificationmentioning

confidence: 99%

Section: Modelmentioning

confidence: 99%

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Evidence for Evolution or Bias in Host Extinctions of Type 1a Supernovae at High Redshift

Jain

Ralston

2006

ApJ

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“…In contrast, Clements et al (2004) presented deep submillimetre observations of sixteen galaxies at z=0.5, selected through being hosts of a type Ia supernova and suggested that dust in supernova host galaxies at z=0.5 could produce a dimming that is comparable to the dimming attributed to accelerated expansion of the Universe. Based on deep submillimeter observations of 17 galaxies at z=0.5 that are hosts of a type Ia supernova Farrah et al (2004) emphasized the need to carefully monitor dust extinction when using type Ia supernovae to measure the cosmological parameters.…”

Section: Introductionmentioning

confidence: 99%

A possible interrelation between the estimated luminosity distances and internal extinctions of type Ia supernovae

Balázs¹,

Hetesi

Regály

et al. 2006

Astron. Nachr.

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We studied the statistical properties of the luminosity distance and internal extinction data of type Ia supernovae in the lists published by Tonry et al. (2003) and Barris et al. (2004). After selecting the luminosity distance in an empty Universe as a reference level we divided the sample into low z < 0.25 and high z ≥ 0.25 parts. We further divided these subsamples by the median of the internal extinction. Performing sign tests using the standardized residuals between the estimated logarithmic luminosity distances and those of an empty universe, on the four subsamples separately, we recognized that the residuals were distributed symmetrically in the low redshift region, independently from the internal extinction. On the contrary, the low extinction part of the data of z ≥ 0.25 clearly showed an excess of the points with respect to an empty Universe which was not the case in the high extinction region. This diversity pointed to an interrelation between the estimated luminosity distance and internal extinction. To characterize quantitatively this interrelation we introduced a hidden variable making use of the technics of factor analysis. After subtracting that part of the residual which was explained by the hidden variable we obtained luminosity distances which were already free from interrelation with internal extinction. Fitting the corrected luminosity distances with cosmological models we concluded that the SN Ia data alone did not exclude the possibility of the Λ = 0 solution.

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“…In the SNIa literature, the problem of SNIa host galaxy dust extinction is well recognised (Albrecht et al 2006;Conley et al 2006;Astier et al 2006;Wood-Vasey et al 2007). Observations of high redshift SNIa tell us that their spectra are similar to local ones (Garavini et al 2005;Hook et al 2005;Garavini et al 2007), with no anomalous reddening (Knop et al 2003) and dust masses of host galaxies similar to those of local galaxies (Clements et al 2004(Clements et al , 2005, based on sub-mm data).…”

Section: Observational Statusmentioning

confidence: 99%

Host galaxy extinction of Type Ia supernovae: co-evolution of interstellar medium structure and the extinction law with star formation

Holwerda¹

2008

Monthly Notices of the Royal Astronomical Society

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This paper presents a mechanism that may modify the extinction law for Type Ia supernovae (SNeIa) observed at higher redshift. Starting from the observations that (i) SNeIa occur predominantly in spiral galaxies, (ii) star formation ejects interstellar medium (ISM) out of the plane of spirals, (iii) star formation alters the extinction properties of the dust in the ISM, and (iv) there is substantially more star formation at higher redshift, I propose that spiral galaxies have a dustier halo in the past than they do now. The ejected material's lower value of RV will lead to a lower average value for SNeIa observed at higher redshift. Two relations in SNIa observations indicate evolution of the average RV: the relation of observed RV with inclination of the host galaxy at low redshift and the matching of the distribution of extinction values (AV) for SNeIa in different redshift intervals. The inclination effect does point to a halo with lower RV values. In contrast, the distributions of AV values match best for an evolution that mimics the relation of SNIa dimming with redshift attributed to the cosmological constant. However, even in the worse‐case scenario, the evolution cannot fully explain the dimming of SNeIa: host galaxy extinction law evolution is not a viable alternative to account for the dimming of SNeIa. Future observations of SNeIa – multicolour light curves and spectra – will solve separately for values of AV and RV foreach SNIa. Solving for evolution of (and AV) with redshift will be important for the coming generation of cosmological SNIa measurements and has the bonus science of insight into the distribution of dust‐rich ISM in the host galaxies in the distant past.

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Sub-millimeter emission from type Ia supernova host galaxies at z=0.5

Cited by 4 publications

References 25 publications

Evidence for Evolution or Bias in Host Extinctions of Type 1a Supernovae at High Redshift

Evidence for Evolution or Bias in Host Extinctions of Type 1a Supernovae at High Redshift

A possible interrelation between the estimated luminosity distances and internal extinctions of type Ia supernovae

Host galaxy extinction of Type Ia supernovae: co-evolution of interstellar medium structure and the extinction law with star formation

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