J/A+A/703/A168 Observed photometry of SN 2023ixf (Li+, 2025)
Optical and near-infrared Observations of SN 2023ixf for over 600 days
after the explosion.
Li G., Wang X., Yang Y., Pastorello A., Reguitti A., Valerin G., Ochner P.,
Cai Y., Iijima T., Munari U., Salmaso I., Farina A., Cazzola R.,
Trabacchin N., Fiscale S., Ciroi S., Mura A., Siviero A., Cabras F.,
Pabst M., Taubenberger S., Vogl C., Fiorin C., Liu J., Chen L., Xiang D.,
Mo J., Li L., Wang Z., Zhang J., Zhai Q., Mirzaqulov D.O.,
Ehgamberdiev S.A., Filippenko V.A., Yan S., Hu M., Ma X., Xia Q., Gao X.,
Li W.
<Astron. Astrophys. 703, A168 (2025)>
=2025A&A...703A.168L 2025A&A...703A.168L (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Photometry, UBV ; Photometry, SDSS ;
Photometry, infrared
Keywords: stars: massive - stars: mass-loss - supernovae: individual: SN 2023ixf
Abstract:
We present a comprehensive photometric and spectroscopic study of the
nearby Type II supernova (SN) 2023ixf, with our extensive observations
spanning the phases from ∼3 to over 600 days after the first light.
The aim of this study is to obtain key information on the explosion
properties of SN 2023ixf and the nature of its progenitor.
The observational properties of SN 2023ixf are compared with those of
a representative sample of Type II/IIP/IIL SNe to investigate
commonalities and diversities. We conduct a detailed analysis of
temporal evolution of major spectral features observed throughout
different phases of the SN 2023ixf explosion. Several key
interpretations are addressed through a comparison between the data
and the model spectra predicted by non-local thermodynamic equilibrium
(non-LTE) radiative-transfer calculations for progenitor stars within
a range of zero-age main sequence (ZAMS) masses.
Our observations indicate that SN 2023ixf is a transitional SN that
bridges the gap between Type IIP and IIL subclasses of H-rich SNe,
characterized by a relatively short plateau (≲70d) in the light
curve. It shows a rather prompt spectroscopic evolution toward the
nebular phase; emission lines of Na, O, H, and Ca in nebular spectra
all exhibit multipeak profiles, which might be attributed to bipolar
distribution of the ejecta. In particular, the Hα profile can be
separated into two central peaked components (with a velocity of about
1500km/s) that is likely due to nickel-powered ejecta and two outer
peak/box components (with a velocity extending up to ∼8000km/s) that
can arise from interaction of the outermost ejecta with a
circumstellar shell at a distance of ∼6.2x1015cm. The nebular-phase
spectra of SN 2023ixf show good agreement with those predicted by a
non-LTE radiative-transfer code for progenitor stars with a ZAMS mass
ranging from 15 to 19 M☉. A distance D=6.35+0.31-0.39Mpc is
estimated for M101 based on the expanding photosphere method.
Description:
Optical photometry of SN 2023ixf was obtained with the 0.8m Tsinghua
University-NAOC Telescope (TNT) at Xinglong Observatory in China, the
1.5m AZT-22 telescope (AZT) at the Maidanak Astronomical Observatory
(MAO) in Uzbekistan, the Lijiang 2.4m telescope (LJT) of Yunnan
Astronomical Observatories in China, and the Schmidt 67/91cm Telescope
(hereafter 67/91-ST) and 1.82m Copernico Telescope (hereafter
Copernico) at the Asiago Astrophysical Observatory in Italy. NIR
photometry in the JHK bandpasses was obtained with the Near Infrared
Camera Spectrometer (NICS) mounted on the 3.58m Telescopio Nazionale
Galileo (TNG) on the island of La Palma.
table1: Observed photometry of SN 2023ixf.
Objects:
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RA (2000) DE Designation(s)
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14 03 38.56 +54 18 41.9 SN 2023ixf = SN 2023ixf
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 43 692 Observed photometry of SN 2023ixf
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d MJD Modified Julian Date
11- 17 F7.3 d Phase Days after the explosion (from MJD 60082.788)
19 A1 --- Filter [UBV ugriz JHK] Filter
21- 26 F6.3 mag mag Apparent Magnitude in Filter
29- 33 F5.3 mag e_mag Uncertainty in mag
35- 43 A9 --- Inst Telescope
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Acknowledgements:
Gaici Li,, lgc21(at)mails.tsinghua.edu.cn
(End) Patricia Vannier [CDS] 14-Aug-2025