2018A&A...611A..67N


Query : 2018A&A...611A..67N

2018A&A...611A..67N - Astronomy and Astrophysics, volume 611A, 67-67 (2018/3-1)

Early gray dust formation in the type IIn SN 2005ip.

NIELSEN A.-S.B., HJORTH J. and GALL C.

Abstract (from CDS):

The physical characteristics of dust formed in supernovae is poorly known. In this paper, we investigate the extinction properties of dust formed in the type IIn SN 2005ip. The observed light curves of SN 2005ip all exhibit a sudden drop around 50 days after discovery. This has been attributed to dust formation in the dense circumstellar medium. We modeled the intrinsic light curves in six optical bands, adopting a theoretical model for the luminosity evolution of supernovae interacting with their circumstellar material. From the difference between the observed and intrinsic light curves, we calculated extinction curves as a function of time. The total-to-selective extinction ratio, RV, was determined from the extinction in the B and V bands. The resulting extinction, AV , increases monotonically up to about 1mag, 150-days after discovery. The inferred RV value also increases slightly with time, but appears constant in the range 4.5-8, beyond 100 days after discovery. The analysis confirms that dust is likely formed in SN 2005ip, starting about two months after explosion. The high value of RV, that is, gray dust, suggests dust properties different from the Milky Way. While this result hinges on the assumed theoretical intrinsic light curve evolution, it is encouraging that the fitted light curves are as expected for standard ejecta and circumstellar medium density structures.

Abstract Copyright: © ESO 2018

Journal keyword(s): dust, extinction - supernovae: individual: SN 2005ip

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10381 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6418 1
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16265 1
4 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4740 2
5 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1884 1
6 V* VY CMa s*r 07 22 58.32877 -25 46 03.2355 12.01 10.19 7.95     M5Iae 1059 0
7 2MASS J07371703+6535579 HXB 07 37 17.0432126424 +65 35 57.826001220           SNIIP 254 1
8 SN 2006jd SN* 08 02 07.43 +00 48 31.5   22.5 21.8 20.4 21.3 SNIIn 97 1
9 SN 2006jc SN* 09 17 20.78 +41 54 32.7     13.8     SNIbn 309 1
10 NGC 2906 GiG 09 32 06.2228278920 +08 26 30.486567516   13.1       ~ 149 0
11 SN 2005ip SN* 09 32 06.42 +08 26 44.4 18.1 18.7 18.5     SNII 161 1
12 SN 2010jl SN* 09 42 53.33 +09 29 41.8           SNIIn 250 1
13 SN 1998S SN* 11 46 06.1 +47 28 55     12.2     SNIIn 426 1
14 SN 2011ja SN* 13 05 11.12 -49 31 27.0           SNIIP 34 0

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2022.10.02-02:05:15

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