Journal
ASTROPHYSICAL JOURNAL
Volume 630, Issue 1, Pages L33-L36Publisher
IOP PUBLISHING LTD
DOI: 10.1086/491620
Keywords
galaxies : individual (NGC 4038); stars : evolution; supernovae : general; supernovae : individual (2004gt)
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Funding
- STFC [PP/C506805/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/C506805/1] Funding Source: researchfish
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We report on our attempts to locate the progenitor of the Type Ic supernova SN 2004gt in NGC 4038. We use high-resolution HST ACS images of SN 2004gt and have compared them with deep pre-explosion HST WFPC2 F336W, F439W, F555W, and F814W images. We identify the SN location on the pre-explosion frames with an accuracy of 5 mas. We show that the progenitor is below the detection thresholds of all the pre-explosion images. These detection limits are used to place luminosity and mass limits on the progenitor. The progenitor of SN 2004gt seems to be restricted to a low-luminosity high-temperature star, either a single WC star with an initial mass of > 40 M-circle dot or a low-mass star in a binary. The pre-explosion data cannot distinguish between the two scenarios.
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