Asteroid rotation periods from the Palomar Transient Factory survey
Asteroid rotation periods from the Palomar Transient Factory survey
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DOI：
10.1111/j.1365-2966.2012.20462.x
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发表时间：
2012-01
影响因子：
4.8
通讯作者：
D. Polishook;E. Ofek;A. Waszczak;S. Kulkarni;A. Gal-yam;O. Aharonson;R. Laher;J. Surace;C. Klein;J. Bloom;N. Brosch;D. Prialnik;C. Grillmair;S. Cenko;M. Kasliwal;Nicholas M. Law;D. Levitan;P. Nugent;D. Poznanski;D. Poznanski;D. Poznanski;R. Quimby
中科院分区：
文献类型：
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作者：
D. Polishook;E. Ofek;A. Waszczak;S. Kulkarni;A. Gal-yam;O. Aharonson;R. Laher;J. Surace;C. Klein;J. Bloom;N. Brosch;D. Prialnik;C. Grillmair;S. Cenko;M. Kasliwal;Nicholas M. Law;D. Levitan;P. Nugent;D. Poznanski;D. Poznanski;D. Poznanski;R. Quimby
帕洛玛瞬时工厂（PTF）是一项天气调查，旨在以各种节奏探索瞬时和变化的天空。我们使用PTF观测场，每晚观测多次（10次），连续几个晚上，以找到小行星，构建它们的光变曲线并测量它们的旋转周期。在这里，我们描述了我们用来实现这些目标的管道，并提出了作为该计划的一部分分析的前四个（重叠）PTF字段的结果。这些区域的面积为21 deg^2，我们在四个晚上以每20分钟的节奏观测了这些区域。我们的管道能够探测到624颗小行星，其中145颗（约20%）是以前未知的。我们提出了88个主带小行星的高质量旋转周期和另外85个小行星的可能周期或周期下限。对于剩下的451颗小行星，我们提出了它们光度振幅的下限。其中三颗小行星的光变曲线是双星小行星的特征。我们估计，执行我们对所有现有的高节奏PTF数据的搜索将提供大约10000个小行星的旋转周期，主要是在14到20等范围内。
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.