ZTF early obs. of type Ia SNe. II. Rise time : J/ApJ/902/47

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Authors : Miller A.A. orcid , Yao Y., Bulla M. (hide) , Yao Y., Bulla M. et..al

VizieR DOI : 10.26093/cds/vizier.19020047
Bibcode : 2020ApJ...902...47M (ADS) (Simbad) (Objects)
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CDS Keywords : Supernovae; Surveys; Redshifts
UAT : Supernovae, Surveys, Redshifted

Observation (OC)

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Inserted into VizieR : 02-May-2022
Last modification : 08-Sep-2022

ZTF early observations of Type Ia supernovae. II. First light, the initial rise, and time to reach maximum brightness. (2020)

Keywords : Type Ia supernovae ; Surveys ; Catalogs ; Observational astronomy ; Supernovae

Abstract:While it is clear that Type Ia supernovae (SNe) are the result of thermonuclear explosions in C/O white dwarfs (WDs), a great deal remains uncertain about the binary companion that facilitates the explosive disruption of the WD. Here, we present a comprehensive analysis of a large, unique data set of 127 SNe Ia with exquisite coverage by the Zwicky Transient Facility (ZTF). High-cadence (six observations per night) ZTF observations allow us to measure the SN rise time and examine its initial evolution. We develop a Bayesian framework to model the early rise as a power law in time, which enables the inclusion of priors in our model. For a volume-limited subset of normal SNe Ia, we find that the mean power-law index is ...(more)
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American Astronomical Society policies
In this paper, we have presented an analysis of the initial evolution and rise times of 127 ZTF-discovered SNe Ia with early observations; see Paper I (Yao+ 2019, J/ApJ/886/152) for details on how the sample was selected. These SNe were observed as part of the ZTF high-cadence extragalactic experiment, which obtained three g_ZTF_ and three r_ZTF_ observations every night the telescope was open.

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  • J/ApJ/870/13 : K2 LC alternative analysis of ASASSN-18bt (Shappee+, 2019)
  • J/ApJ/886/152 : ZTF early observations of Type Ia SNe. I. LCs (Yao+, 2019)
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  • J/ApJ/898/56 : UVOT, ZTF gri LCs & sp. of the SN Ia 2019yvq (Miller+, 2020)
  • J/ApJ/902/48 : ZTF early obs. of type Ia supernovae. III. (Bulla+, 2020)

                


                

                    

                


                

                    

                


                

                    
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