Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop12118k&link_type=abstract
HST Proposal ID #12118. Cycle 17
Astronomy and Astrophysics
Astronomy
Scientific paper
The Palomar Transient Factory {PTF} has discovered a rare type of transient in the luminosity "gap'' between novae and supernovae. Located in a spiral arm of Messier 99, PTF10fqs is very red {effective temperature 3500 K} and slowly evolving. The spectrum is dominated by intermediate-width H-alpha {680 km/s} and calcium lines. The explosion signature is similar to M85 OT2006-1, SN 2008S and NGC 300-OT2008. The origin of these events is shrouded in mystery and controversy {and in some cases, in dust}. Here, we propose a single-orbit observation to derive a precise astrometric position of this transient while it is still bright. This would allow us to firmly tie this HST observation with future searches of any remnant and serve as legacy observation for this rare and interesting source.;
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