313 New asteroid rotation periods from palomar transient factory observations

Chan Kao Chang, Wing Huen Ip, Hsing Wen Lin, Yu Chi Cheng, Chow Choong Ngeow, Ting Chang Yang, Adam Waszczak, Shrinivas R. Kulkarni, David Levitan, Branimir Sesar, Russ Laher, Jason Surace, Thomas A. Prince

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15 引文 斯高帕斯(Scopus)


A new asteroid rotation period survey has been carried out by using the Palomar Transient Factory (PTF). Twelve consecutive PTF fields, which covered an area of 87 deg2 in the ecliptic plane, were observed in the R band with a cadence of ∼20 minutes during 2013 February 15-18. We detected 2500 known asteroids with a diameter range of 0.5 km ≤D ≤ 200 km. Of these, 313 objects had highly reliable rotation periods and exhibited the "spin barrier" at ∼2 hr. In contrast to the flat spin-rate distribution of the asteroids with 3 km ≤D ≤ 15 km shown by Pravec et al., our results deviated somewhat from a Maxwellian distribution and showed a decrease at the spin rate greater than 5 rev day-1. One superfast rotator candidate and two possible binary asteroids were also found in this work.

期刊Astrophysical Journal
出版狀態已出版 - 10 6月 2014


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