2019ApJ...873..127T


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.24CEST07:40:44

2019ApJ...873..127T - Astrophys. J., 873, 127-127 (2019/March-2)

Supernova 2017eaw: molecule and dust formation from infrared observations.

TINYANONT S., KASLIWAL M.M., KRAFTON K., LAU R., RHO J., LEONARD D.C., DE K., JENCSON J., MAWET D., MILLAR-BLANCHAER M., NILSSON R., YAN L., GEHRZ R.D., HELOU G., VAN DYK S.D., SERABYN E., FOX O.D. and CLAYTON G.

Abstract (from CDS):

We present infrared (IR) photometry and spectroscopy of the Type II-P SN 2017eaw and its progenitor in the nearby galaxy NGC 6946. Progenitor observations in the Ks band in four epochs from 1 yr to 1 day before the explosion reveal no significant variability in the progenitor star greater than 6% that lasts longer than 200 days. SN 2017eaw is a typical SN II-P with near-IR and mid-IR photometric evolution similar to those of SNe 2002hh and 2004et, other normal SNe II-P in the same galaxy. Spectroscopic monitoring during the plateau phase reveals a possible high-velocity He I 1.083 µm absorption line, indicative of a shock interaction with the circumstellar medium. Spectra between 389 and 480 days postexplosion reveal a strong CO first overtone emission at 389 days, with a line profile matching that of SN 1987A from the same epoch, indicating ∼10–3 M of CO at 1800 K. From the 389 days epoch until the most recent observation at 566 days, the first overtone feature fades while the 4.5 µm excess, likely from the CO fundamental band, remains. This behavior indicates that the CO has not been destroyed, but that the gas has cooled enough that the levels responsible for first overtone emissions are no longer populated. Finally, the evolution of Spitzer 3.6 µm photometry shows evidence for dust formation in SN 2017eaw, with a dust mass of 10–6 or 10–4 M assuming carbonaceous or silicate grains, respectively.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): circumstellar matter - supernovae: individual: SN2017eaw

Simbad objects: 28

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Number of rows : 28

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 SN 2013ej SN* 01 36 48.16 +15 45 31.0           SN.IIP 99 0
2 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SN.IIP 556 1
3 NGC 1637 AGN 04 41 28.229 -02 51 28.94   11.4   11.0 11.3 ~ 366 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14326 1
5 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5487 4
6 SN 1987A SN* 05 35 28.020 -69 16 11.07   4.75 4.81     SN.IIPec 4382 2
7 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1443 0
8 NGC 2403 AGN 07 36 51.396 +65 36 09.17 9.31 8.84 8.38 8.19   ~ 1570 1
9 SN 2004dj HXB 07 37 17.02 +65 35 57.8     11.2     SN.IIP 228 1
10 SN 2006jc SN* 09 17 20.78 +41 54 32.7     13.8     SN.Ib-n 252 1
11 SN 2005ip SN* 09 32 06.42 +08 26 44.4 18.1 18.7 18.5     SN.II 113 1
12 SN 1999gi SN* 10 18 16.66 +41 26 28.2   14.8       SN.IIP 195 1
13 SN 2013am SN* 11 18 56.95 +13 03 49.4           SNII 21 1
14 SN 2011ja SN* 13 05 11.12 -49 31 27.0           SN.IIP 30 0
15 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1230 2
16 SN 2011dh SN* 13 30 05.10555 +47 10 10.9227           SN.IIb 263 1
17 * 7 Ser * 15 22 23.2337663262 +12 34 03.076671000   6.275 6.280     A0V 36 0
18 SN 2009kf SN* 16 12 54.00 +55 38 13.8           SN.IIP 40 1
19 NAME Sgr A East Rad 17 45 41 -29 00.8           ~ 433 2
20 * 55 Dra * 19 09 45.8055975266 +65 58 42.653454723 6.250 6.260 6.260   6.23 A0V 36 0
21 SN 2017eaw SN* 20 34 44.240 +60 11 35.90           SN.IIP 17 0
22 SN 2002hh SN* 20 34 44.29 +60 07 19.0     17.18     SN.IIP 128 1
23 SN 2008S ? 20 34 45.33 +60 05 58.4   19.89 18.79 17.93   SN.IIn? 203 2
24 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2182 2
25 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SN.IIP 385 1
26 SN 2013fs SN* 23 19 44.70 +10 11 05.0           SNIIP 43 1
27 NAME Cas A SNR 23 23 24.000 +58 48 54.00           ~ 2336 1
28 SN 2007od SN* 23 55 48.68 +18 24 54.8       14.4   SN.IIP 102 1

    Equat.    Gal    SGal    Ecl

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2019.10.24-07:40:44

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