A search for fast optical transients in the Pan-STARRS1 Medium-Deep survey : M-dwarf flares, asteroids, limits on extragalactic rates, and implications for LSST
| Autor: | Christopher W. Stubbs, John L. Tonry, Mark E. Huber, Nigel Metcalfe, Edo Berger, K. C. Chambers, Ryan J. Foley, Alicia M. Soderberg, William S. Burgett, C. Leibler, Eugene A. Magnier, Ryan Chornock, Armin Rest, Paul A. Price, H. Flewelling |
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| Rok vydání: | 2013 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Cataclysmic variables 010504 meteorology & atmospheric sciences general [Supernovae] FOS: Physical sciences Minor planets Astronomy and Astrophysics Astrophysics flare [Stars] 01 natural sciences Supernova 13. Climate action Space and Planetary Science Asteroid 0103 physical sciences Astrophysics - High Energy Astrophysical Phenomena Gamma-ray burst Surveys 010303 astronomy & astrophysics general [Asteroids] Novae 0105 earth and related environmental sciences |
| Zdroj: | Astrophysical journal, 2013, Vol.779(1), pp.18 [Peer Reviewed Journal] |
| DOI: | 10.1088/0004-637X/779/1/18 |
| Popis: | [Abridged] We present a search for fast optical transients (~0.5 hr-1 day) using repeated observations of the Pan-STARRS1 Medium-Deep Survey (PS1/MDS) fields. Our search takes advantage of the consecutive g/r-band observations (16.5 min in each filter), by requiring detections in both bands, with non-detections on preceding and subsequent nights. We identify 19 transients brighter than 22.5 AB mag (S/N>10). Of these, 11 events exhibit quiescent counterparts in the deep PS1/MDS templates that we identify as M4-M9 dwarfs. The remaining 8 transients exhibit a range of properties indicative of main-belt asteroids near the stationary point of their orbits. With identifications for all 19 transients, we place an upper limit of R_FOT(0.5hr) Submitted to ApJ; 13 pages (emulateapj style), 8 figures, 3 tables |
| Databáze: | OpenAIRE |
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