J/ApJ/860/68 Type IIn Supernova SN 2010bt photometry (Elias-Rosa+, 2018)
The type IIn supernova SN 2010bt: the explosion of a star in outburst.
Elias-Rosa N., Van Dyk S.D., Benetti S., Cappellaro E., Smith N., Kotak R.,
Turatto M., Filippenko A.V., Pignata G., Fox O.D., Galbany L.,
Gonzalez-Gaitan S., Miluzio M., Monard L.A.G., Ergon M.
<Astrophys. J., 860, 68 (2018)>
=2018ApJ...860...68E 2018ApJ...860...68E
ADC_Keywords: Supernovae; Photometry, UBVRI; Photometry, infrared
Keywords: galaxies: individual (NGC 7130); stars: evolution;
supernovae: general; supernovae: individual (SN 2010bt)
Abstract:
It is well known that massive stars (M>8M☉) evolve up to the
collapse of the stellar core, resulting in most cases in a supernova
(SN) explosion. Their heterogeneity is related mainly to different
configurations of the progenitor star at the moment of the explosion
and to their immediate environments. We present photometry and
spectroscopy of SN 2010bt, which was classified as a Type IIn SN from
a spectrum obtained soon after discovery and was observed extensively
for about 2 months. After the seasonal interruption owing to its
proximity to the Sun, the SN was below the detection threshold,
indicative of a rapid luminosity decline. We can identify the likely
progenitor with a very luminous star (log L/L☉∼7) through
comparison of Hubble Space Telescope images of the host galaxy prior
to explosion with those of the SN obtained after maximum light. Such a
luminosity is not expected for a quiescent star, but rather for a
massive star in an active phase. This progenitor candidate was later
confirmed via images taken in 2015 (∼5yr post-discovery), in which no
bright point source was detected at the SN position. Given these
results and the SN behavior, we conclude that SN 2010bt was likely a
Type IIn SN and that its progenitor was a massive star that
experienced an outburst shortly before the final explosion, leading to
a dense H-rich circumstellar environment around the SN progenitor.
Description:
Optical BVRI images of SN 2010bt were obtained with the 1.3m Small
and Moderate Aperture Research Telescope System (SMARTS)+ANDICAM at
Cerro Tololo Inter-American Observatory (CTIO), the 6.5m Magellan
Clay Telescope+LDSS-3 at Las Campanas Observatory, and the 3.58m New
Technology Telescope (NTT)+EFOSC2 at the European Southern Observatory
(ESO) of La Silla Observatory, all located in Chile.
We also include in our data set unfiltered data from the Bronberg
Observatory (South Africa) and archival images from the 1.0m Jacobus
Kapteyn Telescope at Roque de Los Muchachos Observatory (Spain).
Near-infrared (NIR) observations were also obtained with the 3.6m
NTT+SOFI at the ESO Observatory of La Silla on 2004 October 04
(PI: P. Lira, 074.B-0375(A)). We include in this work the data
obtained at the 8.2m unit telescope UT4 of the Very Large
Telescope+HAWK-I at the ESO Observatory of Cerro Paranal
(PI: E. Cappellaro, 083.D-0259(A)), presented by Miluzio+
(2013A&A...554A.127M 2013A&A...554A.127M).
The final vegamag calibrated magnitudes of SN 2010bt are listed in
Tables 3 and 4.
Objects:
---------------------------------------------------
RA (ICRS) DE Designation(s)
---------------------------------------------------
21 48 20.22 -34 57 16.5 SN 2010bt = SN 2010bt
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
phot.dat 122 46 Optical Johnson-Cousins photometry of SN 2010bt
(Table 3) and NIR photometry (Table 4) -- VEGAMAG
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See also:
B/eso : ESO Science Archive Catalog (ESO, 1991-2019)
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
II/179 : Southern Spectrophotometric Standards. I+II (Hamuy+ 1992,94)
J/MNRAS/408/181 : CN2002ch UBVRI and ugriz light curves (Pastorello+, 2010)
J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)
J/A+A/538/A120 : A unified supernova catalogue (Lennarz+, 2012)
J/MNRAS/433/1312 : SN2009ip UBVRI, UVOT and JHK light curves (Fraser+, 2013)
J/A+A/555/A10 : Light curves of 5 type IIn supernovae (Taddia+, 2013)
J/ApJ/788/154 : Palomar Transient Factory SNe IIn photometry (Ofek+, 2014)
J/ApJ/795/142 : Defining photometric peculiar SNIa (Gonzalez-Gaitan+, 2014)
J/MNRAS/445/2440 : SN with associated Planck CMB temperatures (Yershov+, 2014)
J/AJ/151/33 : UBVRIz light curves of 51 Type II SNe (Galbany+, 2016)
Byte-by-byte Description of file: phot.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "Y/M/D" Date Date of observation
12- 18 F7.1 --- MJD [52134/57309] Modified julian date of observation
20- 26 F7.1 d Phase Phase of observation relative to discovery
(discovery MJD=55303.1)
28 A1 --- l_Umag Limit flag on Umag
29- 33 F5.2 mag Umag [16.88/18.3]? The U band magnitude
35- 38 F4.2 mag e_Umag [0.14/0.39]? The one sigma error in Umag
40 A1 --- l_Bmag Limit flag on Bmag
41- 45 F5.2 mag Bmag [17.0/21.3]? The B band magnitude
47- 50 F4.2 mag e_Bmag [0.03/0.34]? The one sigma error in Bmag
52 A1 --- l_Vmag Limit flag on Vmag
53- 57 F5.2 mag Vmag [16.33/24.4]? The V band magnitude
59- 62 F4.2 mag e_Vmag [0.03/0.38]? The one sigma error in Vmag
64 A1 --- l_Rmag Limit flag on Rmag
65- 69 F5.2 mag Rmag [16.0/20.2]? The R band magnitude
71- 74 F4.2 mag e_Rmag [0.04/0.41]? The one sigma error in Rmag
76 A1 --- l_Imag Limit flag on Imag
77- 81 F5.2 mag Imag [15.79/19.7]? The I band magnitude
83- 86 F4.2 mag e_Imag [0.04/0.14]? The one sigma error in Imag
88 A1 --- l_Jmag Limit flag on Jmag
89- 92 F4.1 mag Jmag ? The J band magnitude
94 A1 --- l_Hmag Limit flag on Hmag
95- 98 F4.1 mag Hmag ? The H band magnitude
100 A1 --- l_Kmag Limit flag on Kmag
101-105 F5.2 mag Kmag ? The K band magnitude
107-110 F4.2 mag e_Kmag ? The one sigma error in Kmag
112-122 A11 --- Inst Instrument key (1)
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Note (1): Instruments as follows (from Table 1):
ANDICAM = ANDICAM on 1.3m SMARTS, Cerro Tololo Inter-American Observatory
(CTIO), Chile (0.37"/pix)
Swift = Swift on a 0.3 m Ritchey-Chretien UV/optical Telescope (0.5"/pix)
BO = SBIG ST8-XME CCD on the 0.3m Meade telescope, Bronberg Observatory,
South Africa (1.3"/pix)
EFOSC2 = EFOSC2 on the 3.6m New Technology Telescope, ESO/La Silla, Chile
(0.12"/pix)
HST_ACS/WFC = ACS/WFC on the 2.4m Hubble Space Telescope (0.05"/pix)
HST_WFC3 = WFC3/UVIS on the 2.4m Hubble Space Telescope (0.04"/pix)
JAG = JAG on the 1.0m Jacobus Kapteyn Telescope, Observatorio del Roque
de los Muchachos (ORM), La Palma, Spain (0.33"/pix)
LDSS-3 = LDSS-3 on the 6.5m Magellan Clay Telescope, La Campanas, Chile
(0.19"/pix)
HAWK-I = HAWK-I on the 8.2m Very Large Telescope UT4, ESO/La Silla, Chile
(0.11"/pix)
SOFI = SOFI on the 3.6m New Technology Telescope, ESO/La Silla, Chile
(0.29"/pix)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 03-Jul-2019