Supernova Rates and Luminosity Functions from ASAS-SN I: 2014--2017 Type Ia SNe and Their Subtypes

Abstract

We present the volumetric rates and luminosity functions (LFs) of Type Ia supernovae (SNe Ia) from the $V$-band All-Sky Automated Survey for Supernovae (ASAS-SN) catalogues spanning discovery dates from UTC 2014-01-26 to UTC 2017-12-29. Our standard sample consists of 404 SNe Ia with $m_{V,\mathrm{peak}}<17$ mag and Galactic latitude $|b|>15^{\circ }$. Our results are both statistically more precise and systematically more robust than previous studies due to the large sample size and high spectroscopic completeness. We make completeness corrections based on both the apparent and absolute magnitudes by simulating the detection of SNe Ia in ASAS-SN light curves. We find a total volumetric rate for all subtypes of $R_{\mathrm{tot}}=2.28_{-0.20}^{+0.20}\times 10^4{\mathrm{yr}}^{-1}{\mathrm{Gpc}}^{-3}{h}_{70}^3$ for $M_{V,\mathrm{peak}}<-16.5$ mag ($R_{\mathrm{tot}}=1.91_{-0.12}^{+0.12}\times 10^4{\mathrm{yr}}^{-1}{\mathrm{Gpc}}^{-3}{h}_{70}^3$ for $M_{V,\mathrm{peak}}<-17.5$ mag) at the median redshift of our sample, $z_{\mathrm{med}}=0.024$. This is in agreement ($1\sigma$) with the local volumetric rates found by previous studies. We also compile luminosity functions (LFs) for the entire sample as well as for subtypes of SNe Ia for the first time. The major subtypes with more than one SN include Ia-91bg, Ia-91T, Ia-CSM, and Ia-03fg with total rates of $R_{\mathrm{Ia}-91bg}=1.4_{-0.5}^{+0.5}\times 10^3{\mathrm{yr}}^{-1}{\mathrm{Gpc}}^{-3}{h}_{70}^3$, $R_{\mathrm{Ia}-91T}=8.5_{-1.7}^{+1.6}\times 10^2{\mathrm{yr}}^{-1}{\mathrm{Gpc}}^{-3}{h}_{70}^3$, $R_{\mathrm{Ia}-\mathrm{CSM}}=10_{-7}^{+7}{\mathrm{yr}}^{-1}{\mathrm{Gpc}}^{-3}{h}_{70}^3$, and $R_{\mathrm{Ia}-03fg}=30_{-20}^{+20}{\mathrm{yr}}^{-1}{\mathrm{Gpc}}^{-3}{h}_{70}^3$, respectively. We estimate a mean host extinction of $E(V-r)\approx 0.2$ mag based on the shift between our $V$-band and the ZTF $r$-band LFs.

14 pages, 9 figures, 8 tables, accepted to MNRAS

References in corpus (22)

• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Zwicky Transient Facility: Data Processing, Products, and Archive
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
• The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary
• PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
• The Luminous and Carbon-Rich Supernova 2006gz: A Double Degenerate Merger?
• The Carnegie Supernova Project: Intrinsic Colors of Type Ia Supernovae
• The Carnegie Supernova Project I: Third Photometry Data Release of Low-Redshift Type Ia Supernovae and Other White Dwarf Explosions
• Slow-Speed Supernovae from the Palomar Transient Factory: Two Channels
• The volumetric rate of normal type Ia supernovae in the local universe discovered by the Palomar Transient Factory
• The ASAS-SN Bright Supernova Catalog $-$ II. 2015
• Revealing Type Ia supernova physics with cosmic rates and nuclear gamma rays
• Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment
• The Spectroscopic Classification of Astronomical Transients (SCAT) Survey: Overview, Pipeline Description, Initial Results, and Future Plans
• A Systematic Study of Ia-CSM Supernovae from the ZTF Bright Transient Survey
• Exploring metallicity-dependent rates of Type Ia supernovae and their impact on galaxy formation
• SN 2020kyg and the rates of faint Iax Supernovae from ATLAS
• ASASSN-15hy: an under-luminous, red 03fg-like type Ia supernova
• A Rapid Ionization Change in the Nebular-Phase Spectra of the Type Ia SN 2011fe
• The K correction
• The ASAS-SN Bright Supernova Catalog -- V. 2018-2020

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