Redshift-independent Distances to Type Ia Supernovae

Barris, B.; Tonry, J.

doi:10.1086/424871

Cited by 53 publications

(92 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The intercept of the line, finally, together with an estimate of the absolute (normalised) luminosity provides absolute distances and hence the Hubble constant. Recent Hubble diagrams of SNe Ia have been published by Tonry et al (2003), Knop et al (2003), Barris et al (2004), Riess et al (2004a,b), Astier et al (2006), Wood-Vasey et al (2007), Riess et al (2007) and Jha et al (2007). It should be noted that SNe Ia may be nearly standard candles in the near-infrared (Krisciunas et al 2004a).…”

Section: Type Ia Supernovaementioning

confidence: 95%

“…It will become impractical to obtain spectroscopy for all these objects for the classification and statistical approaches using the observed light curve shapes and the colours are being developed (e.g. Barris & Tonry 2004, Riess et al 2004b, Sullivan et al 2006a, Conley et al 2006b, Kuznetsova & Connolly 2007. However, it still needs to be demonstrated that such large samples will allow us to improve the cosmological parameters.…”

Section: Outlook and Future Projectsmentioning

confidence: 99%

See 1 more Smart Citation

Supernovae and cosmology

Leibundgut

2007

Gen Relativ Gravit

View full text Add to dashboard Cite

The extreme luminosity and their fairly unique temporal behaviour have made supernovae a superb tool to measure distances in the universe. As complex astrophysical events they provide interesting insights into explosion physics, explosive nucleosynthesis, hydrodynamics of the explosion and radiation transport. They are an end product of stellar evolution and provide clues to the stellar composition. Since they can be observed at large distances they have become critical probes to further explore astrophysical effects, like dust properties in external galaxies and the star formation history of galaxies. Some of the astrophysics interferes with the cosmological applications of supernovae. The local velocity field, distorted by the gravitational attraction of the local large scale structure, and the reddening law appear at the moment the major limitations in the accuracy with which cosmological parameters can be determined. These absorption effects can introduce a secondary bias into the observations of the distant supernovae, which needs to be carefully evaluated. Supernovae have been used for the measurement of the Hubble constant, i.e. the current expansion rate of the universe, and the accelerated cosmic expansion directly inferred from the apparent faintness of the distant supernovae.

show abstract

Section: Type Ia Supernovaementioning

confidence: 95%

Section: Outlook and Future Projectsmentioning

confidence: 99%

Supernovae and cosmology

Leibundgut

2007

Gen Relativ Gravit

View full text Add to dashboard Cite

show abstract

“…However, making a Hubble diagram solely from photometrically classified SNe requires a lower false-positive rate (i.e., contamination by non-Ia SNe) than does spectroscopic target selection from photometrically classified SNe. Photometry-only Hubble diagrams were introduced by Barris & Tonry (2004), and have been presented more recently by Rodney & Tonry (2010) and Bazin et al (2011).…”

Section: Introductionmentioning

confidence: 99%

COSMOLOGY WITH PHOTOMETRICALLY CLASSIFIED TYPE Ia SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY

Campbell

D’Andrea

Nichol

et al. 2013

ApJ

112

128

View full text Add to dashboard Cite

We present the cosmological analysis of 752 photometrically classified Type Ia Supernovae (SNe Ia) obtained from the full Sloan Digital Sky Survey II (SDSS-II) Supernova (SN) Survey, supplemented with host-galaxy spectroscopy from the SDSS-III Baryon Oscillation Spectroscopic Survey. Our photometric-classification method is based on the SN classification technique of Sako et al., aided by host-galaxy redshifts (0.05 < z < 0.55). SuperNova ANAlysis simulations of our methodology estimate that we have an SN Ia classification efficiency of 70.8%, with only 3.9% contamination from core-collapse (non-Ia) SNe. We demonstrate that this level of contamination has no effect on our cosmological constraints. We quantify and correct for our selection effects (e.g., Malmquist bias) using simulations. When fitting to a flat ΛCDM cosmological model, we find that our photometric sample alone gives Ω m = 0.24 +0.07 −0.05 (statistical errors only). If we relax the constraint on flatness, then our sample provides competitive joint statistical constraints on Ω m and Ω Λ , comparable to those derived from the spectroscopically confirmed Three-year Supernova Legacy Survey (SNLS3). Using only our data, the statistics-only result favors an accelerating universe at 99.96% confidence. Assuming a constant wCDM cosmological model, and combining with H 0 , cosmic microwave background, and luminous red galaxy data, we obtain w = −0.96 +0.10 −0.10 , Ω m = 0.29 +0.02 −0.02 , and Ω k = 0.00 +0.03 −0.02 (statistical errors only), which is competitive with similar spectroscopically confirmed SNe Ia analyses. Overall this comparison is reassuring, considering the lower redshift leverage of the SDSS-II SN sample (z < 0.55) and the lack of spectroscopic confirmation used herein. These results demonstrate the potential of photometrically classified SN Ia samples in improving cosmological constraints.

show abstract

“…Combined with cosmic microwave background data, four complementary investigations hold the key for probing dark energy: weak lensing cosmic shear [8,9], baryon acoustic oscillations (BAO) [10,11], supernovae [7], and cluster counting [12,13]. All four will be undertaken in parallel with LSST.…”

Section: Lsst Observational Windows On Dark Energymentioning

confidence: 99%

Precision Studies of Dark Energy with LSST

Tyson

2006

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. Starting around 2013, data from the Large Synoptic Survey Telescope (LSST) will be analyzed for a wide range of phenomena. By separately tracing the development of mass structure and rate of expansion of the universe, these data will address the physics of dark matter and dark energy, the possible existence of modified gravity on large scales, large extra dimensions, the neutrino mass, and possible self interaction of dark matter particles A WINDOW ONTO NEW PHYSICSDark matter and dark energy offer unique windows onto new physics, bridging particle physics and cosmology. While evidence for physics beyond the standard model has emerged from a variety of measurements --solar and atmospheric neutrinos to high energy experiments --striking evidence comes from the existence of the dark sector of our universe at late times and low energies. Our universe appears to be composed mainly of unknown forms of non-luminous mass-energy: 96 percent of the mass-energy is "dark". Over the last decade multiple measurements have led to a "standard model'' of cosmology containing two mysterious new components: nonbaryonic dark matter and dark energy. Non-baryonic dark matter implies the existence of a totally new sector of particle physics, which dominates the matter inventory of the universe. Dark EnergyTwo independent lines of evidence point to accelerated expansion of our universe at late times. Within Einstein's theory, the underlying cause is a component of energy with large negative pressure referred to as dark energy. Dark energy accounts for 2/3 of the mass-energy in the universe, and is outside the current standard model. Indeed, a direct vacuum energy calculation yields an estimate 120 orders of magnitude larger than the value observed. Even in the context of supersymmetry this is only reduced to a 60 order of magnitude discrepancy.Dark energy affects the cosmic history of the Hubble expansion H(z) as well as the cosmic history of mass clustering. If combined, different types of probes of the expansion history and structure history can lead to percent level precision in dark energy parameters. This is because each probe depends on the other cosmological parameters or errors in different ways. These probes range from cosmic shear, baryon 1

show abstract

Redshift-independent Distances to Type Ia Supernovae

Cited by 53 publications

References 14 publications

Supernovae and cosmology

Supernovae and cosmology

COSMOLOGY WITH PHOTOMETRICALLY CLASSIFIED TYPE Ia SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY

Precision Studies of Dark Energy with LSST

Contact Info

Product

Resources

About