2009A&A...508..371H


Query : 2009A&A...508..371H

2009A&A...508..371H - Astronomy and Astrophysics, volume 508, 371-389 (2009/12-2)

Extensive optical and near-infrared observations of the nearby, narrow-lined type IC SN 2007gr: days 5 to 415.

HUNTER D.J., VALENTI S., KOTAK R., MEIKLE W.P.S., TAUBENBERGER S., PASTORELLO A., BENETTI S., STANISHEV V., SMARTT S.J., TRUNDLE C., ARKHAROV A.A., BUFANO F., CAPPELLARO E., DI CARLO E., DOLCI M., ELIAS-ROSA N., FRANDSEN S., FYNBO J.U., HOPP U., LARIONOV V.M., LAURSEN P., MAZZALI P., NAVASARDYAN H., RIES C., RIFFESER A., RIZZI L., TSVETKOV D.Y., TURATTO M. and WILKE S.

Abstract (from CDS):

We present photometric and spectroscopic observations at optical and near-infrared wavelengths of the nearby typeIc supernova 2007gr. These represent the most extensive data-set to date of any supernova of this sub-type, with frequent coverage from shortly after discovery to more than one year post-explosion. We deduce a rise time to B-band maximum of 11.5±2.7d. We find a peak B-band magnitude of MB=-16.8, and light curves which are remarkably similar to the so-called ``hypernova'' SN 2002ap.In contrast, the spectra of SNe 2007gr and 2002ap show marked differences, not least in their respective expansion velocities. We attribute these differences primarily to the density profiles of their progenitor stars at the time of explosion i.e. a more compact star for SN 2007gr compared to SN 2002ap. From the quasi-bolometric light curve of SN 2007gr, we estimate that 0.076±0.010M of 56Ni was produced in the explosion. Our near-infrared (IR) spectra clearly show the onset and disappearance of the first overtone of carbon monoxide (CO) between ∼70 to 175d relative to B-band maximum. The detection of the CO molecule implies that ionised He was not microscopically mixed within the carbon/oxygen layers. From the optical spectra, near-IR light curves, and colour evolution, we find no evidence for dust condensation in the ejecta out to about +400d. Given the combination of unprecedented temporal coverage, and high signal-to-noise data, we suggest that SN 2007gr could be used as a template object for supernovae of this sub-class.

Abstract Copyright:

Journal keyword(s): supernovae: individual: SN 2007gr - techniques: miscellaneous - supernovae: individual: SN 2002ap - supernovae: general

VizieR on-line data: <Available at CDS (J/A+A/508/371): tablea1.dat tablea2.dat tablea3.dat tablea4.dat tablea5.dat>

Nomenclature: Fig. 1, Table a.1: [HVK2009] NN (Nos 1-10).

Simbad objects: 32

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Number of rows : 32
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 563 1
2 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 781 1
3 SN 2007gr SN* 02 43 27.98 +37 20 44.7       12.77   SNIc 235 1
4 NGC 1058 Sy2 02 43 30.0264850248 +37 20 28.782851784   12.29 11.75 10.85   ~ 466 0
5 SN 1961V SN* 02 43 36.42 +37 20 43.6   12.7 12.5     SNIIpec? 205 2
6 SN 1969L SN* 02 43 45 +37 18.7   13.2 13.2     SNIIP 119 1
7 SN 1998dl SN* 02 46 01.47 -07 34 25.1     16.0     SNIIP 41 1
8 SN 2007Y SN* 03 02 35.92 -22 53 50.1     17.5     SNIb 118 1
9 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 939 1
10 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 673 1
11 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4931 2
12 SN 1995ad SN* 06 01 06.13 -23 40 29.0       15.7   SNII 53 1
13 2MASS J07371703+6535579 HXB 07 37 17.0432126424 +65 35 57.826001220           SNIIP 279 1
14 SN 1997ef SN* 07 57 02.87 +49 33 41.3     16.5     SNIc-BL 270 1
15 SN 2008D SN* 09 09 30.625 +33 08 20.16     17.5     SNIb 404 1
16 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1415 1
17 SN 2005bf SN* 10 23 56.99 -03 11 29.3     18.0     SNIb 203 1
18 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1208 1
19 SN 2000ew SN* 11 40 58.52 +11 27 55.9     14.9     SNIc 62 1
20 SN 1998S SN* 11 46 06.1 +47 28 55     12.2     SNIIn 462 1
21 SN 2004aw SN* 11 57 50.24 +25 15 55.1   18.06       SNIc 200 1
22 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 542 1
23 SN 1985F SN* 12 41 33.01 +41 09 05.9   12.1       SNIb 131 1
24 SN 1990I SN* 12 44 50.26 -40 43 36.5   16.7 16.7     SNIb 58 1
25 SN 2005af SN* 13 04 44.06 -49 33 59.8     12.8     SNIIP 63 1
26 SN 1994I SN* 13 29 54.072 +47 11 30.50     12.9     SNIc 625 1
27 SN 1983N SN* 13 36 51.23 -29 54 01.7   11.7       SNIb 273 1
28 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1820 2
29 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 487 1
30 SN 1999ex SN* 22 16 07.27 -36 50 53.7   17.35       SNIb 141 2
31 SN 2001ig SN* 22 57 30.69 -41 02 25.9     14.5     SNIIb 173 1
32 SN 2003jd SN* 23 21 03.38 -04 53 45.5   16.34       SNIc-BL 139 1

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