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  Sixty Validated Planets from K2 Campaigns 5-8

Livingston, J. H., Crossfield, I. J. M., Petigura, E. A., Gonzales, E. J., Ciardi, D. R., Beichman, C. A., et al. (2018). Sixty Validated Planets from K2 Campaigns 5-8. The Astronomical Journal, 156.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-CC7A-D Version Permalink: https://hdl.handle.net/21.11116/0000-0005-CC7B-C
Genre: Journal Article

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https://ui.adsabs.harvard.edu/abs/2018AJ....156..277L (Any fulltext)
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 Creators:
Livingston, John H.1, Author
Crossfield, Ian J. M.1, Author
Petigura, Erik A.1, Author
Gonzales, Erica J.1, Author
Ciardi, David R.1, Author
Beichman, Charles A.1, Author
Christiansen, Jessie L.1, Author
Dressing, Courtney D.1, Author
Henning, Thomas1, Author
Howard, Andrew W.1, Author
Isaacson, Howard1, Author
Fulton, Benjamin J.1, Author
Kosiarek, Molly1, Author
Schlieder, Joshua E.1, Author
Sinukoff, Evan1, Author
Tamura, Motohide1, Author
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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Free keywords: planets and satellites: detection techniques: photometric Astrophysics - Earth and Planetary Astrophysics
 Abstract: We present a uniform analysis of 155 candidates from the second year of NASA’s K2 mission (Campaigns 5-8), yielding 60 statistically validated planets spanning a range of properties with median values of R p = 2.5 {R}\oplus , P = 7.1 days, T eq = 811 K, and J = 11.3 mag. The sample includes 24 planets in 11 multiplanetary systems, as well as 18 false positives and 77 remaining planet candidates. Of particular interest are 18 planets smaller than 2 {R}\oplus , five orbiting stars brighter than J = 10 mag, and a system of four small planets orbiting the solar-type star EPIC 212157262. We compute planetary transit parameters and false-positive probabilities using a robust statistical framework and present a complete analysis incorporating the results of an intensive campaign of high-resolution imaging and spectroscopic observations. This work brings the K2 yield to over 360 planets, and by extrapolation, we expect that K2 will have discovered ̃600 planets before the expected depletion of its onboard fuel in late 2018.

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 Dates: 2018
 Publication Status: Issued
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Title: The Astronomical Journal
Source Genre: Journal
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Pages: - Volume / Issue: 156 Sequence Number: - Start / End Page: - Identifier: -