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arXiv 1803.04091astro-ph.EP
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来自K2竞选的行星候选人16

Planetary Candidates from K2 Campaign 16

Liang Yu, Ian J. M. Crossfield, Joshua E. Schlieder, Molly R. Kosiarek, Adina D. Feinstein, John H. Livingston, Andrew W. Howard, Björn Benneke, Erik A. Petigur… 展开作者

Liang Yu, Ian J. M. Crossfield, Joshua E. Schlieder, Molly R. Kosiarek, Adina D. Feinstein, John H. Livingston, Andrew W. Howard, Björn Benneke, Erik A. Petigura, Makennah Bristow, Jessie L. Christiansen, David R. Ciardi, Justin R. Crepp, Courtney D. Dressing, Benjamin J. Fulton, Erica J. Gonzales, Kevin K. Hardegree-Ullman, Thomas Henning, Howard Isaacson, Sébastien Lépine, Arturo O. Martinez, Farisa Y. Morales, Evan Sinukoff

摘要:

鉴于K2任务的第16次活动是迄今为止在“面向前方”模式下观察到的仅有的两次K2活动之一,这使得能够从地面立即进行后续观测,我们提出了一个仅通过测光确定的有趣目标的目录。我们的目录包括30个高质量的行星候选者(没有表现出非行星性质的迹象),48个可能是行星或误报的模糊事件,164个食双星,以及231个其他有规律的周期性变量源。我们已经发布了C16中所有目标的光变曲线,并且还发布了本文中确定的所有感兴趣的候选目标的系统参数和过境审查图。特别令人感兴趣的是一颗候选行星围绕明亮的F矮星HD 73344(V=6.9,K=5.6)运行,轨道周期为15天。如果得到证实,该天体将对应于一颗$2.56 \pm 0.18 \ R_\oplus$行星,并可能成为径向速度表征的有利目标。本文旨在快速发布行星候选者,食双星和其他有趣的周期变量,以最大限度地提高这一活动的科学产量,并作为即将到来的TESS任务的测试运行,其频繁的数据发布要求同样快速的候选者识别和有效的后续行动。

英文摘要:

Given that Campaign 16 of the K2 mission is one of just two K2 campaigns observed so far in "forward-facing" mode, which enables immediate follow-up observations from the ground, we present a catalog of interesting targets identified through photometry alone. Our catalog includes 30 high-quality planet candidates (showing no signs of being non-planetary in nature), 48 more ambiguous events that may be either planets or false positives, 164 eclipsing binaries, and 231 other regularly periodic variable sources. We have released light curves for all targets in C16, and have also released system parameters and transit vetting plots for all interesting candidates identified in this paper. Of particular interest is a candidate planet orbiting the bright F dwarf HD 73344 (V=6.9, K=5.6) with an orbital period of 15 days. If confirmed, this object would correspond to a $2.56 \pm 0.18 \ R_\oplus$ planet and would likely be a favorable target for radial velocity characterization. This paper is intended as a rapid release of planet candidates, eclipsing binaries and other interesting periodic variables to maximize the scientific yield of this campaign, and as a test run for the upcoming TESS mission, whose frequent data releases call for similarly rapid candidate identification and efficient follow-up.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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