Scaling K2. V. Statistical Validation of 60 New Exoplanets from K2 Campaigns 2-18
Article
Article Title | Scaling K2. V. Statistical Validation of 60 New Exoplanets from K2 Campaigns 2-18 |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Christiansen, Jessie L., Bhure, Sakhee, Zink, Jon K., Hardegree-Ullman, Kevin K., Adkins, Britt Duffy, Hedges, Christina, Morton, Timothy D., Bieryla, Allyson, Ciardi, David R., Cochran, William D., Dressing, Courtney D., Everett, Mark E., Isaacson, Howard, Livingston, John H., Ziegler, Carl, Berlind, Perry, Calkins, Michael L., Esquerdo, Gilbert A., Latham, David W., Endl, Michael, MacQueen, Phillip J., Fulton, Benjamin J., Hirsch, Lea A., Howard, Andrew W., Weiss, Lauren M., Allen, Bridgette E., Berberyann, Arthur, Ciardi, Krys N., Dunlavy, Ava, Glassford, Sofia H., Dai, Fei, Hirano, Teruyuki, Tamura, Motohide, Beichman, Charles, Gonzales, Erica J., Schlieder, Joshua E., Barclay, Thomas, Crossfield, Ian J. M., Gilbert, Emily A., Matthews, Elisabeth C., Giacalone, Steven and Petigura, Erik A. P |
Journal Title | The Astronomical Journal |
Journal Citation | 163 (6) |
Article Number | 244 |
Number of Pages | 34 |
Year | 2022 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/ac5c4c |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/ac5c4c |
Abstract | The NASA K2 mission, salvaged from the hardware failures of the Kepler telescope, has continued Kepler's planet-hunting success. It has revealed nearly 500 transiting planets around the ecliptic plane, many of which are the subject of further study, and over 1000 additional candidates. Here we present the results of an ongoing project to follow-up and statistically validate new K2 planets, in particular to identify promising new targets for further characterization. By analyzing the reconnaissance spectra, high-resolution imaging, centroid variations, and statistical likelihood of the signals of 91 candidates, we validate 60 new planets in 46 systems. These include a number of planets amenable to transmission spectroscopy (K2-384 f, K2-387 b, K2-390 b, K2-403 b, and K2-398 c), emission spectroscopy (K2-371 b, K2-370 b, and K2-399 b), and both (K2-405 b and K2-406 b); several systems with planets in or close to mean motion resonances (K2-381 and K2-398) including a compact, TRAPPIST-1-like system of five small planets orbiting a mid-M dwarf (K2-384); an ultra-short-period sub-Saturn in the hot Saturn desert (K2-399 b); and a super-Earth orbiting a moderately bright (V = 11.93), metal-poor ([Fe/H] = −0.579 ± 0.080) host star (K2-408 b). In total we validate planets around four F stars, 26 G stars, 13 K stars, and three M dwarfs. In addition, we provide a list of 37 vetted planet candidates that should be prioritized for future follow-up observation in order to be confirmed or validated. |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Byline Affiliations | NASA Exoplanet Science Institute, United States |
California Institute of Technology (Caltech), United States | |
University of Arizona, United States | |
University of Southern California, United States | |
Bay Area Environmental Research Institute, United States | |
NASA Ames Research Center, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Texas at Austin, United States | |
University of California Berkeley, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
Centre for Astrophysics | |
University of Tokyo, Japan | |
Stephen F. Austin State University, United States | |
Stanford University, United States | |
University of Notre Dame, United States | |
University of Wisconsin-Stout, United States | |
College of the Canyons, United States | |
Rhode Island College, United States | |
University of California, United States | |
California Institute of Technology (Caltech), United States | |
Astrobiology Center, Japan | |
National Astronomical Observatory of Japan, Japan | |
Graduate University for Advanced Studies, Japan | |
NASA Goddard Space Flight Center, United States | |
University of Maryland, United States | |
University of Kansas, United States | |
University of Chicago, United States | |
Adler Planetarium, United States | |
University of Geneva, Switzerland |
https://research.usq.edu.au/item/z01w4/scaling-k2-v-statistical-validation-of-60-new-exoplanets-from-k2-campaigns-2-18
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