Refereed journal article or data article (A1)

The First Data Release of CNIa0.02-A Complete Nearby (Redshift <0.02) Sample of Type Ia Supernova Light Curves*

List of Authors: Chen P, Dong SB, Kochanek CS, Stanek KZ, Post RS, Stritzinger MD, Prieto JL, Filippenko AV, Kollmeier JA, Elias-Rosa N, Katz B, Tomasella L, Bose S, Ashall C, Benetti S, Bersier D, Brimacombe J, Brink TG, Brown P, Buckley DAH, Cappellaro E, Christie GW, Fraser M, Gromadzki M, Holoien TWS, Hu SM, Kankare E, Koff R, Lundqvist P, Mattila S, Milne PA, Morrell N, Munoz JA, Mutel R, Natusch T, Nicolas J, Pastorello A, Prentice S, Roth T, Shappee BJ, Stone G, Thompson TA, Villanueva S, Zheng WK

Publisher: IOP Publishing Ltd

Publication year: 2022

Journal: Astrophysical Journal Supplement


Journal acronym: ASTROPHYS J SUPPL S

Volume number: 259

Issue number: 2

Number of pages: 27

ISSN: 0067-0049

eISSN: 1538-4365



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The CNIa0.02 project aims to collect a complete, nearby sample of Type Ia supernovae (SNe Ia) light curves, and the SNe are volume-limited with host-galaxy redshifts z (host) < 0.02. The main scientific goal is to infer the distributions of key properties (e.g., the luminosity function) of local SNe Ia in a complete and unbiased fashion in order to study SN explosion physics. We spectroscopically classify any SN candidate detected by the All-Sky Automated Survey for Supernovae (ASAS-SN) that reaches a peak brightness <16.5 mag. Since ASAS-SN scans the full sky and does not target specific galaxies, our target selection is effectively unbiased by host-galaxy properties. We perform multiband photometric observations starting from the time of discovery. In the first data release (DR1), we present the optical light curves obtained for 247 SNe from our project (including 148 SNe in the complete sample), and we derive parameters such as the peak fluxes, Delta m (15), and s (BV) .

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Last updated on 2022-04-05 at 10:00