TY - JOUR
T1 - ULTRA-SHORT-PERIOD PLANETS in K2 with COMPANIONS
T2 - A DOUBLE TRANSITING SYSTEM for EPIC 220674823
AU - Adams, Elisabeth R.
AU - Jackson, Brian
AU - Endl, Michael
AU - Cochran, William D.
AU - Macqueen, Phillip J.
AU - Duev, Dmitry A.
AU - Jensen-Clem, Rebecca
AU - Maissa Salama, Salama
AU - Ziegler, Carl
AU - Baranec, Christoph
AU - Kulkarni, Shrinivas
AU - Law, Nicholas M.
AU - Riddle, Reed
N1 - Funding Information:
This study is based on work supported by NASA under Grant no. NNX15AB78G issued through the Astrophysical Data Analysis Program by the Science Mission Directorate. M. E., W.D.C., and P.J.M. were supported by NASA K2 Guest Observer grants NNX15AV58G, NNX16AE70G, and NNX16AE58G to the University of Texas at Austin.
Publisher Copyright:
© 2017. The American Astronomical Society. All rights reserved..
PY - 2017/2
Y1 - 2017/2
N2 -
Two transiting planets have been found orbiting K2 target EPIC 220674823, with one being an ultra-short-period planet (USP) having a period of 0.57 days (13.7 hours), and the other having a period of 13.3 days. These planets are small, with radii of 1.5 and 2.5 Earth radii respectively. Follow-up studies, including radial velocity observations and high-resolution adaptive optics imagery, revealed no stellar companions. This discovery marks the 12th confirmed or validated planetary system where a USP is accompanied by at least one more planet, indicating that such configurations might be common. This necessitates consideration in models exploring the formation and evolution of extreme planetary systems.
AB -
Two transiting planets have been found orbiting K2 target EPIC 220674823, with one being an ultra-short-period planet (USP) having a period of 0.57 days (13.7 hours), and the other having a period of 13.3 days. These planets are small, with radii of 1.5 and 2.5 Earth radii respectively. Follow-up studies, including radial velocity observations and high-resolution adaptive optics imagery, revealed no stellar companions. This discovery marks the 12th confirmed or validated planetary system where a USP is accompanied by at least one more planet, indicating that such configurations might be common. This necessitates consideration in models exploring the formation and evolution of extreme planetary systems.
KW - planetary systems
UR - https://www.scopus.com/pages/publications/85012069819
UR - https://www.scopus.com/pages/publications/85012069819#tab=citedBy
U2 - 10.3847/1538-3881/153/2/82
DO - 10.3847/1538-3881/153/2/82
M3 - Article
AN - SCOPUS:85012069819
SN - 0004-6256
VL - 153
JO - Astronomical Journal
JF - Astronomical Journal
IS - 2
M1 - 82
ER -