Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on the physical properties of Type Ia supernovae from
  photometry   We present a photometric study of 17 Type Ia supernovae (SNe) based on
multi-color (Bessell BVRI) data taken at Piszkesteto mountain station of
Konkoly Observatory, Hungary between 2016 and 2018. We analyze the light curves
(LCs) using the publicly available LC-fitter SNooPy2 to derive distance and
reddening information. The bolometric LCs are fit with a radiation-diffusion
Arnett-model to get constraints on the physical parameters of the ejecta: the
optical opacity, the ejected mass and the expansion velocity in particular. We
also study the pre-maximum (B-V) color evolution by comparing our data with
standard delayed detonation and pulsational delayed detonation models, and show
that the Ni56 masses of the models that fit the (B-V) colors are consistent
with those derived from the bolometric LC fitting. We find similar correlations
between the ejecta parameters (e.g. ejecta mass, or Ni56 mass vs decline rate)
as published recently by Scalzo et al. (2019).

26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn