J/A+A/650/A174 SN 2018ijp transient gri light curves (Tartaglia+, 2021)
SN 2018ijp: the explosion of a stripped-envelope star within a dense H-rich
shell?
Tartaglia L., Sollerman E., Barbarino C., Taddia F., Mason E., Berton M.,
Taggart K., Bellm E.C., De K., Frederick S., Fremling C., Gal-Yam A.,
Golkhou V.Z., Graham M., Ho A.Y.Q., Hung T., Kaye S., Kim Y.L., Laher R.R.,
Masci F.J., Perley D.A., Porter M.D., Reiley D.J., Riddle R., Rusholme B.,
Soumagnac M.T., Walters R.
<Astron. Astrophys. 650, A174 (2021)>
=2021A&A...650A.174T 2021A&A...650A.174T (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Photometry, ugriz
Keywords: supernovae: general - supernovae: individual: SN 2018ijp
Abstract:
In this paper, we discuss the outcomes of the follow-up campaign of
SN 2018ijp, discovered as part of the Zwicky Transient Facility
survey for optical transients. Its first spectrum shows similarities
to broad-lined Type Ic supernovae around maximum light, whereas later
spectra display strong signatures of interaction between rapidly
expanding ejecta and a dense H-rich circumstellar medium, coinciding
with a second peak in the photometric evolution of the transient.
This evolution, along with the results of modeling of the first
light-curve peak, suggests a scenario where a stripped star exploded
within a dense circumstellar medium. The two main phases in the
evolution of the transient could be interpreted as a first phase
dominated by radioactive decays, and a later interaction-dominated
phase where the ejecta collide with a pre-existing shell. We therefore
discuss SN 2018jp within the context of a massive star depleted of its
outer layers exploding within a dense H-rich circumstellar medium.
Description:
Photometric table of SN 2018ijp studied in the paper.
Photometry of the transient was mostly obtained using the Samuel
Oschin telescope (P48) with the ZTF camera in g and r bands.
Additional photometry was obtained with the Nordic Optical Telescope
(NOT) using the Alhambra Faint Object Spectrograph and Camera
(ALFOSC3).
Three additional gri epochs were obtained using the Liverpool
Telescope (LT) with the optical imaging component of the
Infrared-Optical (IO) suite of instruments (IO:O7).
Objects:
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RA (2000) DE Designation(s)
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10 21 38.05 +08 55 53.0 SN 2018ijp = SN 2018ijp
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 67 98 Sloan gri (ABMag) photometry of SN 2018ijp
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- Date Date of observation (yyyymmdd)
10- 19 F10.4 d JD Julian Date (JD-2400000)
21 A1 --- l_gmag Limit flag on gmag
23- 28 F6.3 mag gmag ?=- Sloan g magnitude (AB)
30- 34 F5.3 mag e_gmag ?=- Error on gmag (AB)
36 A1 --- l_rmag Limit flag on rmag
38- 43 F6.3 mag rmag ?=- Sloan r magnitude (AB)
45- 49 F5.3 mag e_rmag ?=- Error on rmag (AB)
51 A1 --- l_imag Limit flag on imag
53- 58 F6.3 mag imag ?=- Sloan i magnitude (AB)
60- 64 F5.3 mag e_imag ?=- Error on imag (AB)
66- 67 I2 --- Tel Telescope numerical code (1)
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Note (1): Telescope numerical code as follows:
1 = 2.56m Nordic Optical Telescope with ALFOSC
2 = 2.00m Liverpool Telescope with IO:O
3 = 3.60m Telescopio Nazionale Galileo with DOLoRes
48 = Palomar's 48-inch Samuel Oschin Telescope
60 = Palomar's automated 60-inch telescope
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Acknowledgements:
Leonardo Tartaglia, tleonardo.tartaglia(at)gmail.com
(End) Patricia Vannier [CDS] 04-May-2021