Carnegie Supernova Project-II: A new method to photometrically identify sub-types of extreme Type Ia Supernovae

Ashall C.,Lu J.,Burns C.,Hsiao E. Y.,Stritzinger M.,Suntzeff N. B.,Phillips M. M.,Baron E.,Contreras C.,Davis S.,Galbany L.,Hoeflich P.,Holmbo S.,Morrell N.,Karamehmetoglu E.,Krisciunas K.,Kumar S.,Shahbandeh M.,Uddin S.

ASTROPHYSICAL JOURNAL LETTERS（2020）

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Abstract

We present a new method to photometrically delineate between various sub-types of Type Ia supernovae (SNe Ia). Using the color-stretch parameters, s(BV) or s(gr), and the time of i-band primary maximum relative to the B-band (More

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Key words

Type Ia supernovae,Supernovae,Time domain astronomy

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