2020ApJ...889..170G

Query : 2020ApJ...889..170G

2020ApJ...889..170G - Astrophys. J., 889, 170-170 (2020/February-1)

Flash ionization signatures in the Type Ibn supernova SN 2019uo.

GANGOPADHYAY A., MISRA K., HIRAMATSU D., WANG S.-Q., HOSSEINZADEH G., WANG X., VALENTI S., ZHANG J., HOWELL D.A., ARCAVI I., ANUPAMA G.C., BURKE J., DASTIDAR R., ITAGAKI K., KUMAR B., KUMAR B., LI L., McCULLY C., MO J., PANDEY S.B., PELLEGRINO C., SAI H., SAHU D.K., SANWAL P., SINGH A., SINGH M., ZHANG J., ZHANG T. and ZHANG X.

Abstract (from CDS):

We present photometric and spectroscopic observations of the type Ibn supernova (SN) 2019uo, the second ever SN Ibn with flash ionization (He II, C III, N III) features in its early spectra. SN 2019uo displays a rapid post-peak luminosity decline of 0.1 mag day–1 similar to most of the SNe Ibn, but is fainter (M{max}V=-18.30±0.24 mag) than a typical SN Ibn and shows a color evolution that places it between SNe Ib and the most extreme SNe Ibn. SN 2019uo shows P-cygni He I features in the early spectra which gradually evolve and become emission dominated post peak. It also shows faster evolution in line velocities as compared to most other members of the type Ibn subclass. The bolometric light curve is fairly well described by a 56Ni + circumstellar interaction model.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Core-collapse supernovae - Supernovae - CCD photometry - Photometry - Spectroscopy - Astronomical techniques

Simbad objects: 24

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Number of rows : 24
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 PSST 15dpn SN* 02 32 59.75 +18 38 07.0           SNIbn 11 0
2 OGLE 2012-SN-6 SN* 03 33 34.79 -74 23 40.1           SNIbn 33 0
3 SN 2010al SN* 08 14 15.91 +18 26 18.2           SNIInpec 64 1
4 PS1-12sk SN* 08 44 54.860 +42 58 16.89           SNIbn 32 0
5 SN 2006jc SN* 09 17 20.78 +41 54 32.7     13.8     SNIbn 342 1
6 LSQ 12btw SN* 10 10 28.820 +05 32 12.48           SNIbn 20 0
7 SN 1998S SN* 11 46 06.1 +47 28 55     12.2     SNIIn 462 1
8 UGC 7020 AG? 12 02 36.5322693144 +41 03 15.138111348   14.4       ~ 43 1
9 SN 2019uo SN* 12 02 36.602 +41 03 41.92           SNIbn 17 0
10 iPTF 15ul SN* 12 14 03.76 +47 54 03.9           ~ 18 0
11 SN 2005la SN* 12 52 15.68 +27 31 52.5     17.6     SNIbn/IIbn 62 1
12 CRTS CSS140421 J142042+031602 SN* 14 20 41.70 +03 16 01.5           SNIbn 14 0
13 SN 2013cu SN* 14 33 58.97 +40 14 20.7           SNII: 85 1
14 iPTF 15akq SN* 15 03 51.29 +33 33 18.1           ~ 9 0
15 iPTF 13z SN* 16 02 00.12 +21 14 41.4           SNIIn 19 0
16 iPTF 13beo SN* 16 12 26.63 +14 19 18.0           SNIbn 24 0
17 SN 2018bcc SN* 16 14 22.650 +35 55 04.48           ~ 9 0
18 ASASSN -15ed SN* 16 48 25.16 +50 59 30.7           SNIbn 23 0
19 SN 2008fq SN* 20 25 06.19 -24 48 27.6           SNII 39 1
20 SN 2015G SN* 20 37 25.58 +66 07 11.5           SNIbn 30 1
21 LSQ 13ccw SN* 21 35 51.64 -18 32 52.0           SNIbn 25 0
22 SN 2011hw SN* 22 26 14.54 +34 12 59.1           SNIIn: 52 1
23 PTF 11rfh SN* 22 35 49.58 -00 22 26.1           ~ 8 0
24 PTF 12ldy SN* 23 45 11.04 +23 09 18.8           ~ 9 0

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