@article{6ea00c94ec4147198d7a2a7359c20daf,
title = "A Linear Relation between the Color Stretch sBV and the Rising Color Slope s0*(B−V) of Type Ia Supernovae",
abstract = "Using data from the Complete Nearby (redshift z host < 0.02) sample of Type Ia Supernovae (CNIa0.02), we find a linear relation between two parameters derived from the B − V color curves of Type Ia supernovae: the color stretch s BV and the rising color slope s 0 * ( B − V ) after the peak, and this relation applies to the full range of s BV . The s BV parameter is known to be tightly correlated with the peak luminosity, especially for fast decliners (dim Type Ia supernovae), and the luminosity correlation with s BV is markedly better than with the classic light-curve width parameters such as Δm 15(B). Thus, our new linear relation can be used to infer peak luminosity from s 0 * . Unlike s BV (or Δm 15(B)), the measurement of s 0 * ( B − V ) does not rely on a well-determined time of light-curve peak or color maximum, making it less demanding on the light-curve coverage than past approaches.",
author = "Ping Chen and Subo Dong and Chris Ashall and S. Benetti and D. Bersier and S. Bose and Joseph Brimacombe and Brink, {Thomas G.} and Buckley, {David A.H.} and Enrico Cappellaro and Christie, {Grant W.} and N. Elias-Rosa and Filippenko, {Alexei V.} and Mariusz Gromadzki and Holoien, {Thomas W.S.} and Shaoming Hu and Kochanek, {C. S.} and Robert Koff and Kollmeier, {Juna A.} and P. Lundqvist and S. Mattila and Milne, {Peter A.} and Mu{\~n}oz, {J. A.} and Robert Mutel and Tim Natusch and Joel Nicolas and A. Pastorello and Simon Prentice and Prieto, {J. L.} and Tyler Roth and Shappee, {B. J.} and Geoffrey Stone and Stanek, {K. Z.} and Stritzinger, {M. D.} and Thompson, {Todd A.} and Lina Tomasella and Steven Villanueva",
note = "Funding Information: We thank Chris Burns for discussing s BV with us. We acknowledge the Telescope Access Program (TAP) funded by the NAOC, CAS, and the Special Fund for Astronomy from the Ministry of Finance. We acknowledge SUPA2019A (PI M. D. Stritzinger) via OPTICON. C.S.K., K.Z.S., and B.J.S. are supported by NSF grants AST-1515927, AST-1814440, and AST-1908570. M.D.S. acknowledges funding from the Villum Fonden (project numbers 13261 and 28021), and also a project grant (8021-00170B) from the Independent Research Fund Denmark. N.E.R. acknowledges partial support from MIUR, PRIN 2017 (grant 20179ZF5KS), and the Spanish MICINN grant PID2019-108709GB-I00 and FEDER funds. A.V.F.'s supernova group is grateful for financial assistance from the Christopher R. Redlich Fund, the Miller Institute for Basic Research in Science (U.C. Berkeley; A.V.F. was a Miller Senior Fellow), and many individual donors. J.L.P. is supported in part by FONDECYT through grant 1191038 and by the Ministry of Economy, Development, and Tourism{\textquoteright}s Millennium Science Initiative through grant IC120009, awarded to The Millennium Institute of Astrophysics, MAS. B.J.S. is also supported by NSF grants AST-1920392 and AST-1911074. M.G. is supported by the Polish NCN MAESTRO grant 2014/14/A/ST9/00121. Polish participation in SALT is funded by grant MNiSW DIR/WK/2016/07. S.M.H. is supported by the Natural Science Foundation of Shandong province (#JQ201702), and the Young Scholars Program of Shandong University (#20820162003). Support for T.W.-S.H. was provided by NASA through the NASA Hubble Fellowship grant #HST-HF2-51458.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555. Research at Lick Observatory is partially supported by a generous gift from Google. We thank the staffs of the various observatories at which data were obtained for their excellent assistance. Funding Information: We thank Chris Burns for discussing s with us. We acknowledge the Telescope Access Program (TAP) funded by the NAOC, CAS, and the Special Fund for Astronomy from the Ministry of Finance. We acknowledge SUPA2019A (PI M. D. Stritzinger) via OPTICON. C.S.K., K.Z.S., and B.J.S. are supported by NSF grants AST-1515927, AST-1814440, and AST-1908570. M.D.S. acknowledges funding from the Villum Fonden (project numbers 13261 and 28021), and also a project grant (8021-00170B) from the Independent Research Fund Denmark. N.E.R. acknowledges partial support from MIUR, PRIN 2017 (grant 20179ZF5KS), and the Spanish MICINN grant PID2019-108709GB-I00 and FEDER funds. A.V.F.'s supernova group is grateful for financial assistance from the Christopher R. Redlich Fund, the Miller Institute for Basic Research in Science (U.C. Berkeley; A.V.F. was a Miller Senior Fellow), and many individual donors. J.L.P. is supported in part by FONDECYT through grant 1191038 and by the Ministry of Economy, Development, and Tourism{\textquoteright}s Millennium Science Initiative through grant IC120009, awarded to The Millennium Institute of Astrophysics, MAS. B.J.S. is also supported by NSF grants AST-1920392 and AST-1911074. M.G. is supported by the Polish NCN MAESTRO grant 2014/14/A/ST9/00121. Polish participation in SALT is funded by grant MNiSW DIR/WK/2016/07. S.M.H. is supported by the Natural Science Foundation of Shandong province (#JQ201702), and the Young Scholars Program of Shandong University (#20820162003). Support for T.W.-S.H. was provided by NASA through the NASA Hubble Fellowship grant #HST-HF2-51458.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555. Research at Lick Observatory is partially supported by a generous gift from Google. We thank the staffs of the various observatories at which data were obtained for their excellent assistance. BV Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",
year = "2023",
month = apr,
day = "1",
doi = "10.3847/1538-4357/acc404",
language = "English (US)",
volume = "946",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",
}