2006A&A...454..503S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST04:36:35

2006A&A...454..503S - Astronomy and Astrophysics, volume 454, 503-509 (2006/8-1)

Supernova 2006aj and the associated X-Ray Flash 060218.

SOLLERMAN J., JAUNSEN A.O., FYNBO J.P.U., HJORTH J., JAKOBSSON P., STRITZINGER M., FERON C., LAURSEN P., OVALDSEN J.-E., SELJ J., THOENE C.C., XU D., DAVIS T., GOROSABEL J., WATSON D., DURO R., ILYIN I., JENSEN B.L., LYSFJORD N., MARQUART T., NIELSEN T.B., NAERAENEN J., SCHWARZ H.E., WALCH S., WOLD M. and OESTLIN G.

Abstract (from CDS):

We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Flash (XRF). XRF060218 is clearly associated with a supernova - dubbed SN2006aj. We present early spectra for SN2006aj as well as optical lightcurves reaching out to 50 days past explosion. Our optical lightcurves define the rise times, the lightcurve shapes and the absolute magnitudes in the U, V and R bands, and we compare these data with data for other relevant supernovae. SN2006aj evolved quite fast, somewhat similarly to SN2002ap, but not as fast as SN1994I. Our spectra show the evolution of the supernova over the peak, when the U-band portion of the spectrum rapidly fades due to extensive line blanketing. We compare to similar spectra of very energetic type Ic supernovae. Our first spectra are earlier than spectra for any other GRB-SN. The spectrum taken 12 days after burst in the rest frame is similar to somewhat later spectra of both SN1998bw and SN2003dh, implying a rapid early evolution. This is consistent with the fast lightcurve. From the narrow emission lines from the host galaxy we derive a redshift of z=0.0331±0.0007. This makes XRF060218 the second closest gamma-ray burst detected. The flux of these emission lines indicate a high-excitation state, and a modest metallicity and star formation rate of the host galaxy.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - supernovae: individual: SN 2006aj

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GRB 050824 gB 00 48 56.100 +22 36 32.00 19.66 21.03 20.46     ~ 156 0
2 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 491 1
3 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 828 1
4 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 506 0
5 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1117 2
6 SN 1994I SN* 13 29 54.072 +47 11 30.50     12.9     SNIc 566 1
7 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1650 2
8 GRB 030723 gB 21 49 24.40 -27 42 47.4           ~ 120 0
9 GRB 020903 gB 22 48 42.34 -20 46 09.3           ~ 215 1

    Equat.    Gal    SGal    Ecl

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2020.07.10-04:36:35

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