2021ApJ...912...46B

Query : 2021ApJ...912...46B

2021ApJ...912...46B - Astrophys. J., 912, 46-46 (2021/May-1)

A large fraction of hydrogen-rich supernova progenitors experience elevated mass loss shortly prior to explosion.

BRUCH R.J., GAL-YAM A., SCHULZE S., YARON O., YANG Y., SOUMAGNAC M., RIGAULT M., STROTJOHANN N.L., OFEK E., SOLLERMAN J., MASCI F.J., BARBARINO C., HO A.Y.Q., FREMLING C., PERLEY D., NORDIN J., CENKO S.B., ADAMS S., ADREONI I., BELLM E.C., BLAGORODNOVA N., BULLA M., BURDGE K., DE K., DHAWAN S., DRAKE A.J., DUEV D.A., DUGAS A., GRAHAM M., GRAHAM M.L., IRANI I., JENCSON J., KARAMEHMETOGLU E., KASLIWAL M., KIM Y.-L., KULKARNI S., KUPFER T., LIANG J., MAHABAL A., MILLER A.A., PRINCE T.A., RIDDLE R., SHARMA Y., SMITH R., TADDIA F., TAGGART K., WALTERS R. and YAN L.

Abstract (from CDS):

Spectroscopic detection of narrow emission lines traces the presence of circumstellar mass distributions around massive stars exploding as core-collapse supernovae. Transient emission lines disappearing shortly after the supernova explosion suggest that the material spatial extent is compact and implies an increased mass loss shortly prior to explosion. Here, we present a systematic survey for such transient emission lines (Flash Spectroscopy) among Type II supernovae detected in the first year of the Zwicky Transient Facility survey. We find that at least six out of ten events for which a spectrum was obtained within two days of the estimated explosion time show evidence for such transient flash lines. Our measured flash event fraction (>30% at 95% confidence level) indicates that elevated mass loss is a common process occurring in massive stars that are about to explode as supernovae.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Type II supernovae - Massive stars - Flash spectra - Transient sources - Stellar mass loss - Observational astronomy

VizieR on-line data: <Available at CDS (J/ApJ/912/46): table2.dat table3.dat table4.dat>

Simbad objects: 39

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Number of rows : 39
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 SN 2018fif SN* 00 09 26.555 +47 21 14.73           SNII 9 0
2 SN 2018iwe SN* 00 17 55.81 +12 05 29.7           SNII 2 0
3 SN 2018fsm SN* 02 14 23.94 +30 48 43.0           SNII 2 0
4 SN 2018leh SN* 04 05 03.30542 +25 15 42.9365           SNIIn 3 0
5 SN 2018zd SN* 06 18 03.180 +78 22 00.90           SNII 38 0
6 SN 2018inm SN* 06 24 40.49 +46 30 14.0           SNII 2 0
7 AT 2018ahi SN* 07 22 02.389 +41 34 09.95           SNIa 2 0
8 SN 2018iua SN* 08 40 08.95 +68 54 11.5           SNII 2 0
9 SN 2018yt SN* 08 59 35.590 +45 36 41.90           SNII 3 0
10 SN 2016bkv SN* 10 18 19.31 +41 25 39.3           SNII 46 0
11 SN 2018bge SN* 11 04 16.00 +50 01 50.3           SNII 2 0
12 SN 1998S SN* 11 46 06.1 +47 28 55     12.2     SNIIn 462 1
13 SN 2018lth SN* 13 08 33.49 +45 59 10.1           SNII 1 0
14 SN 2019eoe SN* 13 19 02.078 +45 01 34.86           SNII 1 0
15 SN 2018fru SN* 13 36 03.760 +66 18 04.36           SNII 5 0
16 SN 2013cu SN* 14 33 58.97 +40 14 20.7           SNII: 85 1
17 SN 2018cyg SN* 15 34 08.480 +56 41 48.73           SNII 6 0
18 SN 2018cxn SN* 15 48 06.46 +55 42 53.5           SNII 3 0
19 SN 2018efj SN* 16 00 34.14 +31 38 34.6           SNII 2 0
20 SN 2018bqs SN* 16 29 02.38 +43 37 36.6           SNII 1 0
21 SN 2018gts SN* 16 36 47.39 +55 44 08.9           SNII 4 0
22 AT 2017isr SN? 16 48 03.590 +26 12 45.00           ~ 1 0
23 SN 2018dfc SN* 16 48 07.760 +24 18 14.87           SNII 4 0
24 SN 2018dfi SN* 16 50 50.10 +45 23 52.5           SN.II 5 0
25 SN 2018fso SN* 16 52 44.19 +70 05 17.6           SNII 3 0
26 SN 2018egh SN* 16 57 15.933 +31 57 47.52           SNII 3 0
27 SN 2018clq SN* 17 08 42.34 +28 31 14.2           SNII 2 0
28 SN 2018grf SN* 17 27 35.43 +71 31 48.9           SNII 4 0
29 SN 2018ccp SN* 17 32 14.12 +36 04 26.4           SNII 3 0
30 SN 2018cug SN* 17 49 19.170 +49 24 44.75           SNII 5 0
31 SN 2018cyh SN* 17 57 48.453 +40 04 34.99           SN.II 3 0
32 SN 2018cfj SN* 18 12 00.75 +44 21 36.6           SNII 2 0
33 SN 2018gvn SN* 18 15 54.34 +44 41 47.3           SNII 2 0
34 SN 2018efd SN* 18 19 59.67 +51 47 47.3           SNIIb 2 0
35 SN 2018ltg SN* 18 25 42.37 +34 39 30.5           SNII 1 0
36 SN 2018lti SN* 18 34 49.16 +38 17 55.4           SNII 2 0
37 SN 2018fzn SN* 19 49 56.9 +59 35 34           SNIIb 4 0
38 SN 2018hqm SN* 22 47 37.630 +39 52 50.23           SNIIn 3 0
39 SN 2013fs SN* 23 19 44.70 +10 11 05.0           SNIIP 111 1

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