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29 March 2024
 
  » arxiv » 2011.02461

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The First Data Release of CNIa0.02 -- A Complete Nearby (Redshift <0.02) Sample of Type Ia Supernova Light Curves
Ping Chen ; Subo Dong ; C. S. Kochanek ; K. Z. Stanek ; R. S. Post ; M. D. Stritzinger ; J. L. Prieto ; Alexei V. Filippenko ; Juna A. Kollmeier ; Boaz Katz ; Lina Tomasella ; S. Bose ; S. Benetti ; D. Bersier ; Thomas G. Brink ; David A. H. Buckley ; Enrico Cappellaro ; N. Elias-Rosa ; Morgan Fraser ; Thomas W.-S. Holoien ; Mariusz Gromadzki ; Erkki Kankare ; P. Lundqvist ; S. Mattila ; Nidia Morrell ; A. Pastorello B. J. Shappee ; Todd A. Thompson ; WeiKang Zheng ;
Date 4 Nov 2020
AbstractThe CNIa0.02 is a complete, nearby sample of Type Ia supernova (SN Ia) multiband light curves, and it is volume-limited with host-galaxy redshift z_host<0.02. The scientific goal of CNIa0.02 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 (discovered or recovered) by the All-Sky Automated Survey for Supernovae (ASAS-SN) that reaches peak brightness <16.5 mag. Since ASAS-SN scans the full sky and does not target specific galaxies, the sample is effectively unbiased by host-galaxy properties. We obtain multiband photometric observations starting from the time of discovery. In the first data release (DR1), we present the optical light curves obtained for 240 SNe (including 182 with multiband data), and we derive parameters such as the peak fluxes and dm15.
Source arXiv, 2011.02461
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