Polishook, D. and Ofek, E. O. and Waszczak, A. and Kulkarni, S. R. and Gal-Yam, A. and Aharonson, O. and Laher, R. and Surace, J. and Klein, C. and Bloom, J. and Brosch, N. and Prialnik, D. and Grillmair, C. and Cenko, S. B. and Kasliwal, M. and Law, N. and Levitan, D. and Nugent, P. and Poznanksi, D. and Quimby, R. (2012) Asteroid rotation periods from the Palomar Transient Factory survey. Monthly Notices of the Royal Astronomical Society, 421 (3). pp. 2094-2108. ISSN 0035-8711 http://resolver.caltech.edu/CaltechAUTHORS:20120514-102852818
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Abstract
The Palomar Transient Factory (PTF) is a synoptic survey designed to explore the transient and variable sky in a wide variety of cadences. We use PTF observations of fields that were observed multiple times (≳10) per night, for several nights, to find asteroids, construct their light curves and measure their rotation periods. Here we describe the pipeline we use to achieve these goals and present the results from the first four (overlapping) PTF fields analysed as part of this programme. These fields, which cover an area of 21 deg^2, were observed on four nights with a cadence of ∼20 min. Our pipeline was able to detect 624 asteroids, of which 145 (≈20 per cent) were previously unknown. We present high-quality rotation periods for 88 main-belt asteroids and possible period or lower limit on the period for an additional 85 asteroids. For the remaining 451 asteroids, we present lower limits on their photometric amplitudes. Three of the asteroids have light curves that are characteristic of binary asteroids. We estimate that implementing our search for all existing high-cadence PTF data will provide rotation periods for about 10 000 asteroids mainly in the magnitude range ≈14 to ≈20.
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| Additional Information: | © 2012 The Authors. Monthly Notices of the Royal Astronomical Society © 2012 RAS. Issue published online: 4 Apr. 2012; Article first published online: 28 Feb. 2012; Accepted 2011 December 23. Received 2011 December 22; in original form 2011 October 17. We thank the referee for useful comments. This paper is based on observations obtained with the Samuel Oschin Telescope as part of the Palomar Transient Factory project, a scientific collaboration between the California Institute of Technology, Columbia University, Las Cumbres Observatory, the Lawrence Berkeley National Laboratory, the National Energy Research Scientific Computing Center, the University of Oxford and theWeizmann Institute of Science. The Weizmann PTF partnership is funded in part by grants from the Israeli Science Foundation (ISF) to AG-Y. PTF Collaborative work between the Weizmann and Caltech groups is supported by the Binational Science Foundation (BSF) via grants to SRK and AG-Y. DPol further acknowledges support from the Benoziyo Center for Astrophysics and the Yeda-Sela Center at WIS. SRK and his group are partially supported by the NSF grant AST–0507734. SBC wishes to acknowledge generous support from Gary and Cynthia Bengier, the Richard and Rhoda Goldman Fund, NASA/Swift grant NNX10AI21G, NASA/Fermi grant NNX1OA057G and National Science Foundation (NSF) grant AST–0908886. | ||||||||||||||||||||
| Group: | Space Radiation Laboratory | ||||||||||||||||||||
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| Subject Keywords: | surveys; minor planets; asteroids: general | ||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20120514-102852818 | ||||||||||||||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20120514-102852818 | ||||||||||||||||||||
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| Official Citation: | Polishook, D., Ofek, E. O., Waszczak, A., Kulkarni, S. R., Gal-Yam, A., Aharonson, O., Laher, R., Surace, J., Klein, C., Bloom, J., Brosch, N., Prialnik, D., Grillmair, C., Cenko, S. B., Kasliwal, M., Law, N., Levitan, D., Nugent, P., Poznanski, D. and Quimby, R. (2012), Asteroid rotation periods from the Palomar Transient Factory survey. Monthly Notices of the Royal Astronomical Society, 421: 2094–2108. doi: 10.1111/j.1365-2966.2012.20462.x | ||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||
| ID Code: | 31451 | ||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||
| Deposited By: | Jason Perez | ||||||||||||||||||||
| Deposited On: | 15 May 2012 14:46 | ||||||||||||||||||||
| Last Modified: | 04 Mar 2013 22:30 |
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