The KELT Follow-up Network and Transit False-positive Catalog: Pre-vetted False Positives for TESS
The KELT Follow-up Network and Transit False-positive Catalog: Pre-vetted False Positives for TESS
复制标题
DOI：
10.3847/1538-3881/aae582
复制
发表时间：
2018-03
期刊：
影响因子：
--
通讯作者：
K. Collins;K. Collins;J. Pepper;J. Labadie-Bartz;K. Stassun;B. Gaudi;D. Bayliss;J. Bento;K. Col'on;D. Feliz;D. James;Marshall C. Johnson;R. Kuhn;M. Lund;M. Penny;Joseph E. Rodriguez;R. Siverd;D. Stevens;X. Yao;G. Zhou;M. Akshay;G. Aldi;C. Ashcraft;S. Awiphan;O. Bacsturk;D. Baker;T. Beatty;P. Benni;P. Berlind;G. Berriman;Z. Berta-Thompson;A. Bieryla;V. Bozza;S. Novati;M. Calkins;J. Cann;D. Ciardi;I. Clark;W. Cochran;D. Cohen;D. Conti;J. Crepp;I. Curtis;G. D’ago;K. A. Diazeguigure;C. Dressing;F. Dubois;E. Ellingson;T. Ellis;G. Esquerdo;P. Evans;Alison J. Friedli;A. Fukui;B. Fulton;E. Gonzales;J. Good;J. Gregorio;T. Gumusayak;D. Hancock;C. Harada;R. Hart;E. Hintz;H. Jang-Condell;E. Jeffery;E. Jensen;E. Jofr'e;M. Joner;A. Kar;D. Kasper;B. Keten;J. Kielkopf;S. Komonjinda;C. Kotnik;D. Latham;J. Leuquire;T. Lewis;L. Logie;S. Lowther;P. Macqueen;T. J. Martin;D. Mawet;K. McLeod;G. Murawski;N. Narita;J. Nordhausen;T. Oberst;C. Odden;P. Panka;R. Petrucci;P. Plavchan;S. Quinn;S. Rau;P. Reed;H. Relles;J. Renaud;G. Scarpetta;Rebecca L. Sorber;A. D. Spencer;M. Spencer;D. Stephens;C. Stockdale;T. Tan;M. Trueblood;P. Trueblood;S. Vanaverbeke;S. Villanueva;E. Warner;M. West;Selccuk Yalccinkaya;Rex R. Yeigh;R. Zambelli
中科院分区：
文献类型：
--
作者：
K. Collins;K. Collins;J. Pepper;J. Labadie-Bartz;K. Stassun;B. Gaudi;D. Bayliss;J. Bento;K. Col'on;D. Feliz;D. James;Marshall C. Johnson;R. Kuhn;M. Lund;M. Penny;Joseph E. Rodriguez;R. Siverd;D. Stevens;X. Yao;G. Zhou;M. Akshay;G. Aldi;C. Ashcraft;S. Awiphan;O. Bacsturk;D. Baker;T. Beatty;P. Benni;P. Berlind;G. Berriman;Z. Berta-Thompson;A. Bieryla;V. Bozza;S. Novati;M. Calkins;J. Cann;D. Ciardi;I. Clark;W. Cochran;D. Cohen;D. Conti;J. Crepp;I. Curtis;G. D’ago;K. A. Diazeguigure;C. Dressing;F. Dubois;E. Ellingson;T. Ellis;G. Esquerdo;P. Evans;Alison J. Friedli;A. Fukui;B. Fulton;E. Gonzales;J. Good;J. Gregorio;T. Gumusayak;D. Hancock;C. Harada;R. Hart;E. Hintz;H. Jang-Condell;E. Jeffery;E. Jensen;E. Jofr'e;M. Joner;A. Kar;D. Kasper;B. Keten;J. Kielkopf;S. Komonjinda;C. Kotnik;D. Latham;J. Leuquire;T. Lewis;L. Logie;S. Lowther;P. Macqueen;T. J. Martin;D. Mawet;K. McLeod;G. Murawski;N. Narita;J. Nordhausen;T. Oberst;C. Odden;P. Panka;R. Petrucci;P. Plavchan;S. Quinn;S. Rau;P. Reed;H. Relles;J. Renaud;G. Scarpetta;Rebecca L. Sorber;A. D. Spencer;M. Spencer;D. Stephens;C. Stockdale;T. Tan;M. Trueblood;P. Trueblood;S. Vanaverbeke;S. Villanueva;E. Warner;M. West;Selccuk Yalccinkaya;Rex R. Yeigh;R. Zambelli
千度极小望远镜（KELT）项目已经对围绕明亮恒星运行的凌日行星进行了10多年的光度测量。KELT图像的像素尺度为1.23“pixel−1-非常类似于NASA的凌日系外行星勘测卫星（TESS）-以及一个大的点扩散函数，KELT缩减管道使用半径为3”的加权测光孔径。在这个角度尺度下，多颗恒星通常会在测光光圈中混合。为了识别误报并确认凌日系外行星，我们组建了一个后续网络（KELT-FUN），以比KELT望远镜更高的空间分辨率，节奏和光度精度进行成像，以及候选宿主恒星的光谱观测。自2011年以来，KELT-FUN团队已经跟踪了1600多颗行星候选者，发现了20多颗行星。不包括非天体物理学来源的450个假警报（即，仪器噪声或系统学），我们提出了一个全天空的1128颗亮星（6 < V < 13）的目录，这些亮星在KELT光变曲线中显示出类似凌日的特征，但随后在测光和/或光谱跟踪观测后被确定为天体物理假阳性（FP）。KELT-FUN团队继续追求KELT和其他行星候选者，并最终将跟进某些类别的TESS候选者。KELT FP目录将有助于最大限度地减少当前和未来过境调查（如TESS）的重复观测。
The Kilodegree Extremely Little Telescope (KELT) project has been conducting a photometric survey of transiting planets orbiting bright stars for over 10 years. The KELT images have a pixel scale of ∼23″ pixel−1—very similar to that of NASA’s Transiting Exoplanet Survey Satellite (TESS)—as well as a large point-spread function, and the KELT reduction pipeline uses a weighted photometric aperture with radius 3′. At this angular scale, multiple stars are typically blended in the photometric apertures. In order to identify false positives and confirm transiting exoplanets, we have assembled a follow-up network (KELT-FUN) to conduct imaging with spatial resolution, cadence, and photometric precision higher than the KELT telescopes, as well as spectroscopic observations of the candidate host stars. The KELT-FUN team has followed-up over 1600 planet candidates since 2011, resulting in more than 20 planet discoveries. Excluding ∼450 false alarms of non-astrophysical origin (i.e., instrumental noise or systematics), we present an all-sky catalog of the 1128 bright stars (6 < V < 13) that show transit-like features in the KELT light curves, but which were subsequently determined to be astrophysical false positives (FPs) after photometric and/or spectroscopic follow-up observations. The KELT-FUN team continues to pursue KELT and other planet candidates and will eventually follow up certain classes of TESS candidates. The KELT FP catalog will help minimize the duplication of follow-up observations by current and future transit surveys such as TESS.