The Distant Type Ia Supernova Rate
Copyright policy )The Distant Type Ia Supernova Rate
We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 square degrees, thirty-eight supernovae were detected at redshifts 0.25--0.85. In a spatially-flat cosmological model consistent with the results obtained by the Supernova Cosmology Project, we derive a rest-frame Type Ia supernova rate at a mean redshift $z\simeq0.55$ of $1.53 {^{+0.28}_{-0.25}} {^{+0.32}_{-0.31}} 10^{-4} h^3 {\rm Mpc}^{-3} {\rm yr}^{-1}$ or $0.58 {^{+0.10}_{-0.09}} {^{+0.10}_{-0.09}} h^2 {\rm SNu}$ (1 SNu = 1 supernova per century per $10^{10}$\Lbsun), where the first uncertainty is statistical and the second includes systematic effects. The dependence of the rate on the assumed cosmological parameters is studied and the redshift dependence of the rate per unit comoving volume is contrasted with local estimates in the context of possible cosmic star formation histories and progenitor models.
40 pages and 7 figures. Accepted for publication in the Astrophysical Journal. Preprint also available at http://supernova.lbl.gov
- Sorbonne Paris Cité France
- University of North Texas United States
- UNIVERSITE PARIS DESCARTES France
- University of Barcelona (UB) Spain
- Space Telescope Science Institute United States
General Physics, galaxies : evolution, Supernovae Cosmology Type Ia Supernovae, Red Shift, Particle and Plasma Physics (for), FOS: Physical sciences, Astronomical Sciences, 0201 Astronomical and Space Sciences (for), Astronomy & Astrophysics, 0306 Physical Chemistry (incl. Structural) (for), [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics, Atomic, 5101 Astronomical Sciences (for-2020), 72 Physics Of Elementary Particles And Fields, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Particle and Plasma Physics, astro-ph, Cosmological Models, galaxies : high-redshift, Nuclear, 5107 Particle and high energy physics (for-2020), 5109 Space sciences (for-2020), supernovae : general, 5101 Astronomical sciences (for-2020), [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 51 Physical Sciences (for-2020), Astronomy & Astrophysics (science-metrix), Astrophysics (astro-ph), Space sciences, 500, Molecular, Cosmology Type Ia Supernovae, Stars, 520, Cosmology, Particle and high energy physics, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Physical Sciences, 0202 Atomic, 71 Classical And Quantum Mechanics, Astronomical and Space Sciences, Physical Chemistry (incl. Structural)
General Physics, galaxies : evolution, Supernovae Cosmology Type Ia Supernovae, Red Shift, Particle and Plasma Physics (for), FOS: Physical sciences, Astronomical Sciences, 0201 Astronomical and Space Sciences (for), Astronomy & Astrophysics, 0306 Physical Chemistry (incl. Structural) (for), [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics, Atomic, 5101 Astronomical Sciences (for-2020), 72 Physics Of Elementary Particles And Fields, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Particle and Plasma Physics, astro-ph, Cosmological Models, galaxies : high-redshift, Nuclear, 5107 Particle and high energy physics (for-2020), 5109 Space sciences (for-2020), supernovae : general, 5101 Astronomical sciences (for-2020), [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 51 Physical Sciences (for-2020), Astronomy & Astrophysics (science-metrix), Astrophysics (astro-ph), Space sciences, 500, Molecular, Cosmology Type Ia Supernovae, Stars, 520, Cosmology, Particle and high energy physics, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Physical Sciences, 0202 Atomic, 71 Classical And Quantum Mechanics, Astronomical and Space Sciences, Physical Chemistry (incl. Structural)
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