J/ApJ/778/L19 SN 2011dh (type IIb) 3.6 and 4.5um light curves (Helou+, 2013)
The mid-infrared light curve of nearby core-collapse supernova SN 2011dh
(PTF 11eon).
Helou G., Kasliwal M.M., Ofek E.O., Arcavi I., Surace J., Gal-Yam A.
<Astrophys. J., 778, L19 (2013)>
=2013ApJ...778L..19H 2013ApJ...778L..19H
ADC_Keywords: Supernovae ; Photometry, infrared
Keywords: circumstellar matter; galaxies: individual: M51;
infrared: ISM; supernovae: individual: SN2011dh
Abstract:
We present Spitzer observations at 3.6 and 4.5µm of the supernova
SN 2011dh (PTF 11eon) in M51 from 18 days to 625 days after explosion.
The mid-infrared emission peaks at 24 days after explosion at a few
x107L ☉, and decays more slowly than the visible-light
bolometric luminosity. The infrared color temperature cools for the
first 90 days and then is constant. Simple numerical models of a
thermal echo can qualitatively reproduce the early behavior. At late
times, the mid-IR light curve cannot be explained by a simple thermal
echo model, suggesting additional dust heating or line emission
mechanisms. We also propose that thermal echoes can serve as effective
probes to uncover supernovae in heavily obscured environments, and
speculate that under the right conditions, integrating the early epoch
of the mid-infrared light curve may constrain the total energy in the
shock breakout flash.
Description:
On May 31.9 2011 UT, the supernova SN 2011dh (PTF 11eon) in M51 (8Mpc)
was discovered (A. Riou) and spectroscopically classified as a
Type IIb (Arcavi et al. 2011, J/ApJ/742/L18).
We observed SN 2011dh 17 times with Spitzer/IRAC, starting 18 days
after explosion and extending to 625 days after explosion.
Objects:
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RA (ICRS) DE Designation(s)
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13 30 05.11 +47 10 10.9 SN2011dh = PTF 11eon
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig2.dat 47 34 SN2011dh light curves at 3.6 and 4.5 microns
(see figure 2 in the paper)
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)
J/A+A/562/A17 : SN 2011dh - The first 100 days (Ergon+, 2014)
J/MNRAS/436/774 : Core collapse supernovae (type Ibc) (Eldridge+, 2013)
J/other/PZ/32.6 : UBVRI light curves of SN 2011dh (Tsvetkov+, 2012)
J/ApJ/742/L18 : Follow-up photometry of the SN IIb PTF 11eon (Arcavi+, 2011)
J/ApJ/669/959 : Warm molecular hydrogen in SINGS galaxies (Roussel+, 2007)
Byte-by-byte Description of file: fig2.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d MJD Modified Julian Date of the observation
11- 13 F3.1 um Band Filter used in the observation (3.6 or 4.5)
15- 23 F9.6 mag mag [11.2/18.5] Observed magnitude in Band (1)
25- 35 F11.6 uJy Flux [11/6351] Observed flux density
37- 47 F11.6 --- S/N [14.5/1335] Signal-to-noise of the observation
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Note (1): The R-band data will be published in a future paper,
Arcavi et al, in prep.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 29-Apr-2015