J/A+A/691/A90 SN 2021wuf light curves (Zeng+, 2024)
SN 2021wuf: A transitional type Ia supernova with low velocity gradient.
Zeng X., Li S., Wang X., Zheng S., Howell D.A., Bostroem K.A., McCully C.,
Esamdin A., Liu J., Iskandar A., Zhang J., Bird S.A., Zhang T., Wang L.,
Li Y., Zhang J.
<Astron. Astrophys. 691, A90 (2024)>
=2024A&A...691A..90Z 2024A&A...691A..90Z (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Photometry, UBV ; Photometry, SDSS
Keywords: supernovae: individual: SN 2021wuf
Abstract:
In this paper, we present an extensive analysis of SN 2021 wuf, a
transition between Ia-norm and SN 1991T-like supernovae, which
exploded at the periphery of the tidal bridge between the pair galaxy
NGC 6500 and NGC 6501 with a redshift of z=0.01. Our observations,
ranging from -21 to +276 days relative to the B-band maximum light,
reveal that SN 2021wuf exhibits properties akin to normal SNe Ia, with
a peak absolute magnitude of Mmax(B) -19.49±0.10mag and a post
-peak decline rate of dm15(B) 1.11±0.06mag. The peak bolometric
luminosity of this SN is estimated as 1.58x1043erg/s,
corresponding to a 56Ni mass of MNi 0.64±0.05M☉. The spectral
features, including high-velocity SiII 6355 lines, a plateau in the
SiII 6355 velocity evolution and the nickel-to-iron ratio in the
nebular phase, suggest a potential pulsating delayed detonation
mechanism. The absence of intermediate mass elements in the early phase
and the high photospheric temperature, as inferred from the
line-strength ratio of SiII 5972 to SiII 6355 (named as R(SiII)),
further support this classification.
Description:
The photometric observations of SN 2021wuf presented here were
obtained with the one-meter telescopes of the Las Cumbres Observatory
(LCO) network for the Global Supernova Project (Howell & Global
Supernova Project 2017). The light curves of SN 2021wuf in the UBVgri
bands were sampled by LCO.
Objects:
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RA (2000) DE Designation(s)
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15 56 02.51 +18 21 14.08 SN 2021wuf = AT 2021wuf
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 87 35 Optical photometric observations of SN 2021wuf
obtained from LCO telescopes
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d MJD Modified Julian Date of observation
(JD=2400000.5)
11- 16 F6.3 mag Bmag ?=99.999 B band magnitude
18- 22 F5.3 mag e_Bmag ?=9.999 Uncertainty in Bmag
24- 29 F6.3 mag Vmag ?=99.999 V band magnitude
31- 35 F5.3 mag e_Vmag ?=9.999 Uncertainty in Vmag
37- 42 F6.3 mag Umag ?=99.999 U band magnitude
44- 48 F5.3 mag e_Umag ?=9.999 Uncertainty in Umag
50- 55 F6.3 mag gmag ?=99.999 g band magnitude
57- 61 F5.3 mag e_gmag ?=9.999 Uncertainty in gmag
63- 68 F6.3 mag rmag ?=99.999 r band magnitude
70- 74 F5.3 mag e_rmag ?=9.999 Uncertainty in rmag
76- 81 F6.3 mag imag ?=99.999 i band magnitude
83- 87 F5.3 mag e_imag ?=9.999 Uncertainty in imag
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Acknowledgements:
Xiangyun Zeng, xyzeng2018(at)ctgu.edu.cn
(End) Patricia Vannier [CDS] 02-Sep-2024