J/MNRAS/431/308 SN 2011fu BVRI light curves (Kumar+, 2013)
Light curve and spectral evolution of the Type IIb supernova 2011fu.
Kumar B., Pandey S.B., Sahu D.K., Vinko J., Moskvitin A.S., Anupama G.C.,
Bhatt V.K., Ordasi A., Nagy A., Sokolov V.V., Sokolova T.N., Komarova V.N.,
Kumar B., Bose S., Roy R., Sagar R.
<Mon. Not. R. Astron. Soc., 431, 308-321 (2013)>
=2013MNRAS.431..308K 2013MNRAS.431..308K
ADC_Keywords: Supernovae ; Photometry, UBVRI
Keywords: supernovae: general - supernovae: individual: SN 2011fu -
supernovae: individual: SN 1993J - galaxies: individual: UGC 01626
Abstract:
We present the low-resolution spectroscopic and UBVRI broad-band
photometric investigations of the Type IIb supernova (SN) 2011fu,
discovered in UGC 01626. The photometric follow-up of this event was
initiated a few days after the explosion and covers a period of about
175d. The early-phase light curve shows a rise, followed by steep
decay in all bands, and shares properties very similar to that seen
for SN 1993J, with a possible detection of the adiabatic cooling
phase. Modelling of the quasi-bolometric light curve suggests that the
progenitor had an extended (∼1x1013cm), low-mass (∼0.1M☉) H-rich
envelope on top of a dense, compact (∼2x1011cm), more massive
(∼1.1M☉) He-rich core. The nickel mass synthesized during the
explosion was found to be ∼0.21M☉, slightly larger than that seen
for other Type IIb SNe. The spectral modelling performed with synow
suggests that the early-phase line velocities for H and Feii features
were ∼16000 and ∼14000km/s, respectively. Then, the velocities
declined up to day +40 and became nearly constant at later epochs.
Description:
SN 2011fu was discovered in a spiral arm of the galaxy UGC 01626 -
type SAB(rs)c - by F. Ciabattari and E. Mazzoni (Ciabattari et al.
2011CBET.2827....2T 2011CBET.2827....2T) on 2011 September 21.04 (UT) with a 0.5-m
Newtonian telescope, in the course of the Italian Supernovae Search
Project.
The prompt photometric follow-up of SN 2011fu started shortly after
the discovery and continued using three ground-based telescopes in
India. The majority of the observations were made using the 2-m
Himalayan Chandra Telescope (HCT) of the Indian Astronomical
Observatory (IAO), Hanle, and the 1-m Sampurnanand Telescope (ST) at
the Aryabhatta Research Institute of Observational Sciences (ARIES),
Nainital, India. All observations were performed in Bessell UBVRI
bands.
Objects:
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RA (2000) DE Designation(s)
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02 08 21.41 +41 29 12.3 SN 2011fu = PSN J02082141+4129123
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 86 63 Photometric observational log of SN 2011fu
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 F10.2 d JD Julian date
12- 18 F7.2 d Phase Number of days after explosion on JD 2455822.5
20- 24 F5.2 mag Umag ?=- Johnson U magnitude
26- 29 F4.2 mag e_Umag ? rms uncertainty on Umag
31 A1 --- l_Bmag Limit flag on Bmag
32- 36 F5.2 mag Bmag ?=- Johnson B magnitude
38- 41 F4.2 mag e_Bmag ? rms uncertainty on Bmag
43 A1 --- l_Vmag Limit flag on Vmag
44- 48 F5.2 mag Vmag ?=- Johnson V magnitude
50- 53 F4.2 mag e_Vmag ? rms uncertainty on Vmag
55 A1 --- l_Rmag Limit flag on Rmag
56- 60 F5.2 mag Rmag ?=- Cousins R magnitude
62- 65 F4.2 mag e_Rmag ? rms uncertainty on Rmag
67 A1 --- l_Imag Limit flag on Imag
68- 72 F5.2 mag Imag ?=- Cousins I magnitude
74- 77 F4.2 mag e_Imag ? rms uncertainty on Imag
79- 86 A8 --- Tel Telescope (1)
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Note (1): The abbreviations denote the following telescopes:
HCT = 2-m Himalayan Chandra Telescope, IAO, Hanle
DFOT = 1.3-m Devasthal Fast Optical Telescope ARIES, India
ST = 1-m Sampurnanand Telescope, ARIES, India
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-May-2014