2022MNRAS.513.5642B

Query : 2022MNRAS.513.5642B

2022MNRAS.513.5642B - Mon. Not. R. Astron. Soc., 513, 5642-5665 (2022/July-2)

Photometric and spectroscopic evolution of the interacting transient AT 2016jbu(Gaia16cfr).

BRENNAN S.J., FRASER M., JOHANSSON J., PASTORELLO A., KOTAK R., STEVANCE H.F., CHEN T.-W., ELDRIDGE J.J., BOSE S., BROWN P.J., CALLIS E., CARTIER R., DENNEFELD M., DONG S., DUFFY P., ELIAS-ROSA N., HOSSEINZADEH G., HSIAO E., KUNCARAYAKTI H., MARTIN-CARRILLO A., MONARD B., NYHOLM A., PIGNATA G., SAND D., SHAPPEE B.J., SMARTT S.J., TUCKER B.E., WYRZYKOWSKI L., ABBOT H., BENETTI S., BENTO J., BLONDIN S., CHEN P., DELGADO A., GALBANY L., GROMADZKI M., GUTIERREZ C.P., HANLON L., HARRISON D.L., HIRAMATSU D., HODGKIN S.T., HOLOIEN T.W.-S., HOWELL D.A., INSERRA C., KANKARE E., KOZLOWSKI S., MULLER-BRAVO T.E., MAGUIRE K., McCULLY C., MEINTJES P., MORRELL N., NICHOLL M., O'NEILL D., PIETRUKOWICZ P., POLESKI R., PRIETO J.L., RAU A., REICHART D.E., SCHWEYER T., SHAHBANDEH M., SKOWRON J., SOLLERMAN J., SOSZYNSKI I., STRITZINGER M.D., SZYMANSKI M., TARTAGLIA L., UDALSKI A., ULACZYK K., YOUNG D.R., VAN LEEUWEN M. and VAN SOELEN B.

Abstract (from CDS):

We present the results from a high-cadence, multiwavelength observation campaign of AT 2016jbu (aka Gaia16cfr), an interacting transient. This data set complements the current literature by adding higher cadence as well as extended coverage of the light-curve evolution and late-time spectroscopic evolution. Photometric coverage reveals that AT 2016jbu underwent significant photometric variability followed by two luminous events, the latter of which reached an absolute magnitude of MV ∼ -18.5 mag. This is similar to the transient SN 2009ip whose nature is still debated. Spectra are dominated by narrow emission lines and show a blue continuum during the peak of the second event. AT 2016jbu shows signatures of a complex, non-homogeneous circumstellar material (CSM). We see slowly evolving asymmetric hydrogen line profiles, with velocities of 500 km s–1 seen in narrow emission features from a slow-moving CSM, and up to 10 000 km s–1 seen in broad absorption from some high-velocity material. Late-time spectra (∼+1 yr) show a lack of forbidden emission lines expected from a core-collapse supernova and are dominated by strong emission from H, He I, and Ca II. Strong asymmetric emission features, a bumpy light curve, and continually evolving spectra suggest an inhibit nebular phase. We compare the evolution of H α among SN 2009ip-like transients and find possible evidence for orientation angle effects. The light-curve evolution of AT 2016jbu suggests similar, but not identical, circumstellar environments to other SN 2009ip-like transients.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): circumstellar matter - stars: massive - supernovae: individual: AT 2016jbu, Gaia16cfr, SN 2009ip

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 2018gjx SN* 02 16 15.6 +28 35 29           SNIIb 25 0
2 NAME UGC 2773 OT2009-1 SN? 03 32 07.24 +47 47 39.6           ~ 56 1
3 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 727 1
4 SN 2015F SN* 07 36 15.76 -69 30 23.0           SNIa 100 1
5 SN 1999ga SN* 07 36 16.70 -69 33 21.8       18   SNIIL 21 1
6 NGC 2442 LIN 07 36 23.7700545576 -69 31 50.997856332 11.47 11.15 10.42 9.71 10.4 ~ 243 1
7 SN 2016jbu SN* 07 36 25.98 -69 32 55.4           SNII 45 0
8 SN 2013gc SN* 08 07 11.88 -28 03 26.3           SNIIn 17 1
9 SN 2015bh SN* 09 09 34.96 +33 07 20.4           SNIIn 83 1
10 SN 2006jc SN* 09 17 20.78 +41 54 32.7     13.8     SNIbn 380 1
11 iPTF 13ajw SN* 10 26 54.55 +19 52 55.2           SNIIn 33 0
12 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0
13 SN 2000ch SN* 10 52 41.40 +36 40 09.5     17.4     SNIIn? 104 2
14 SN 2016bdu SN* 13 10 13.950 +32 31 14.07           SNIIn 35 0
15 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 450 1
16 NGC 7259 GiP 22 23 05.5447865688 -28 57 17.441493624   13.91   12.88   ~ 97 0
17 SN 2009ip s*b 22 23 08.26 -28 56 52.4           LBV 406 0
18 SN 1996al SN* 23 33 16.1 -54 05 02     14.0     SNII 43 1
19 SN 2018cnf SN* 23 39 31.210 -03 08 55.18           SNIIn 14 0

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