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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003202naa a2200457 4500
001oai:DiVA.org:su-51685
003SwePub
008110112s2010 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-516852 URI
0247 a https://doi.org/10.1088/0004-6256/140/5/13212 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Foley, Ryan J.4 aut
2451 0a ON THE PROGENITOR AND SUPERNOVA OF THE SN 2002cx-LIKE SUPERNOVA 2008ge
264 c 2010-10-13
264 1b American Astronomical Society,c 2010
338 a print2 rdacarrier
500 a authorCount :9
520 a We present observations of supernova (SN) 2008ge, which is spectroscopically similar to the peculiar SN 2002cx, and its pre-explosion site indicating that its progenitor was probably a white dwarf. NGC 1527, the host galaxy of SN 2008ge, is an S0 galaxy with no evidence of star formation or massive stars. Astrometrically matching late-time imaging of SN 2008ge to pre-explosion Hubble Space Telescope imaging, we constrain the luminosity of the progenitor star. Since SN 2008ge has no indication of hydrogen or helium in its spectrum, its progenitor must have lost its outer layers before exploding, meaning that it is a white dwarf, a Wolf-Rayet star, or a lower-mass star in a binary system. Observations of the host galaxy show no signs of individual massive stars, star clusters, or H (II) regions at the SN position or anywhere else, making a Wolf-Rayet progenitor unlikely. Late-time spectroscopy of SN 2008ge shows strong [Fe (II)] lines with large velocity widths compared to other members of this class at similar epochs. These previously unseen features indicate that a significant amount of the SN ejecta is Fe (presumably the result of the radioactive decay of Ni-56 generated in the SN), further supporting a thermonuclear explosion. Placing the observations of SN 2008ge in the context of observations of other objects in the same class of SNe, we suggest that the progenitor was most likely a white dwarf.
653 a astrometry
653 a stars: evolution
653 a supernovae: general
653 a supernovae: individual (SN 2008ge)
653 a NATURAL SCIENCES
653 a NATURVETENSKAP
7001 a Rest, Armin4 aut
7001 a Stritzinger, Maximilianu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)mstri
7001 a Pignata, Giuliano4 aut
7001 a Anderson, Joseph P.4 aut
7001 a Hamuy, Mario4 aut
7001 a Morrell, Nidia I.4 aut
7001 a Phillips, Mark M.4 aut
7001 a Salgado, Francisco4 aut
7102 a Stockholms universitetb Institutionen för astronomi4 org
7730 t Astronomical Journald : American Astronomical Societyg 140:5, s. 1321-1328q 140:5<1321-1328x 0004-6256x 1538-3881
8564 u http://iopscience.iop.org/article/10.1088/0004-6256/140/5/1321/pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-51685
8564 8u https://doi.org/10.1088/0004-6256/140/5/1321

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