J/ApJ/763/L27 RI light curves of the type IIn SN 2009ip (Prieto+, 2013)
The 2012 rise of the remarkable type IIn SN 2009ip.
Prieto J.L., Brimacombe J., Drake A.J., Howerton S.
<Astrophys. J., 763, L27 (2013)>
=2013ApJ...763L..27P 2013ApJ...763L..27P
ADC_Keywords: Supernovae ; Photometry, RI
Keywords: circumstellar matter; stars: evolution; stars: mass-loss;
supernovae: individual: SN 2009ip
Abstract:
Recent observations by Mauerhan et al. (2013MNRAS.430.1801M 2013MNRAS.430.1801M) have
shown the unprecedented transition of the previously identified
luminous blue variable (LBV) and supernova (SN) impostor SN 2009ip to
a real Type IIn SN explosion. We present ∼100 optical R- and I-band
photometric measurements of SN 2009ip obtained between UT 2012
September 23.6 and October 9.6, using 0.3-0.4m aperture telescopes
from the Coral Towers Observatory in Cairns, Australia. The light
curves show well-defined phases, including very rapid brightening
early on (0.5mag in 6hr observed during the night of September 24),
a transition to a much slower rise between September 25 and September
28, and a plateau/peak around October 7. These changes are coincident
with the reported spectroscopic changes that most likely mark the
start of a strong interaction between the fast SN ejecta and a dense
circumstellar medium formed during the LBV eruptions observed in
recent years. In the 16-day observing period, SN 2009ip brightened by
3.7mag from I=17.4mag on September 23.6 (MI≃-14.2) to I=13.7mag
(MI≃-17.9) on October 9.6, radiating ∼3x1049erg in the optical
wavelength range. As of 2012 October 9.6, SN 2009ip is more luminous
than most Type IIP SN and comparable to other Type IIn SN.
Description:
Imaging of the field of SN 2009ip was obtained by one of us
(J. Brimacombe) between 2012 September 23.6 and October 9.6 from the
Coral Towers Observatory (Cairns, Australia). The data were collected
from two different telescopes using different broadband filters: 33cm
RCOS (with an R filter) and 41cm RCOS (with an IR luminance filter,
which has sharp blue cutoff at 700nm).
Objects:
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RA (ICRS) DE Designation(s)
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22 23 08.26 -28 56 52.4 SN 2009ip = SN 2009ip
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 39 203 Light curve of SN 2009ip
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/A+A/555/A10 : Light curves of 5 type IIn supernovae (Taddia+, 2013)
J/AJ/144/131 : Photometry and spectroscopy of SN 2010jl (Zhang+, 2012)
J/ApJ/756/173 : Phot. of type IIn SNe 2005ip & 2006jd (Stritzinger+, 2012)
J/ApJ/729/143 : Photometry of type IIn SN 2008am (Chatzopoulos+, 2011)
J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)
J/AJ/128/1761 : HATNET variability survey (Hartman+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Date UT date of observation (2012 month+decimal days)
15- 24 F10.6 d HJD Heliocentic Julian Date; HJD+2456000
26- 31 F6.3 mag mag [13.63/17.45] Observed magnitude in Filt
33- 37 F5.3 mag e_mag [0.01/0.06] Error in mag
39 A1 --- Filt Filter used in observation (I or R;
in standard RI (Johnson/Kron-Cousins))
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 21-Oct-2014