Search Results for author: John H. Livingston

Found 5 papers, 1 papers with code

Speckle Observations of TESS Exoplanet Host Stars: Understanding the Binary Exoplanet Host Star Orbital Period Distribution

no code implementations21 Jan 2021 Steve B. Howell, Rachel A. Matson, David R. Ciardi, Mark E. Everett, John H. Livingston, Nicholas J. Scott, Elliott P. Horch, Joshua N. Winn

We present high-resolution speckle interferometric imaging observations of TESS exoplanet host stars using the NN-EXPLORE NESSI instrument the at the 3. 5-m WIYN telescope.

Earth and Planetary Astrophysics Solar and Stellar Astrophysics

TOI-954 b and EPIC 246193072 b: Short-Period Saturn-Mass Planets that Test Whether Irradiation Leads to Inflation

no code implementations27 Oct 2020 Lizhou Sha, Chelsea X. Huang, Avi Shporer, Joseph E. Rodriguez, Andrew Vanderburg, Rafael Brahm, Janis Hagelberg, Elisabeth C. Matthews, Carl Ziegler, John H. Livingston, Keivan G. Stassun, Duncan J. Wright, Jeffrey D. Crane, Néstor Espinoza, François Bouchy, Gáspár Á. Bakos, Karen A. Collins, George Zhou, Allyson Bieryla, Joel D. Hartman, Robert A. Wittenmyer, Louise D. Nielsen, Peter Plavchan, Daniel Bayliss, Paula Sarkis, Thiam-Guan Tan, Ryan Cloutier, Luigi Mancini, Andrés Jordán, Sharon Wang, Thomas Henning, Norio Narita, Kaloyan Penev, Johanna K. Teske, Stephen R. Kane, Andrew W. Mann, Brett C. Addison, Motohide Tamura, Jonathan Horner, Mauro Barbieri, Jennifer A. Burt, Matías R. Díaz, Ian J. M. Crossfield, Diana Dragomir, Holger Drass, Adina D. Feinstein, HUI ZHANG, Rhodes Hart, John F. Kielkopf, Eric L. N. Jensen, Benjamin T. Montet, Gaël Ottoni, Richard P. Schwarz, Felipe Rojas, David Lopez Fdez Nespral, Pascal Torres, Matthew W. Mengel, Stéphane Udry, Abner Zapata, Erin Snoddy, Jack Okumura, George R. Ricker, Roland K. Vanderspek, David W. Latham, Joshua N. Winn, Sara Seager, Jon M. Jenkins, Knicole D. Colón, Christopher E. Henze, Akshata Krishnamurthy, Eric B. Ting, Michael Vezie, Steven Villanueva

We report the discovery of two short-period Saturn-mass planets, one transiting the G subgiant TOI-954 (TIC 44792534, $ V = 10. 343 $, $ T = 9. 78 $) observed in TESS Sectors 4 & 5, and one transiting the G dwarf EPIC 246193072 ($ V = 12. 70 $, $ K = 10. 67 $) observed in K2 Campaigns 12 & 19.

Earth and Planetary Astrophysics

Planetary candidates transiting cool dwarf stars from Campaigns 12 to 15 of K2

no code implementations24 Jul 2020 A. Castro González, E. Díez Alonso, J. Menéndez Blanco, John H. Livingston, Jerome P. de Leon, S. L. Suárez Gómez, C. González Gutiérrez, F. García Riesgo, L. Bonavera, F. J. Iglesias Rodríguez, R. Muñiz, Mark E. Everett, N. J. Scott, Steve B. Howell, David R. Ciardi, Erica J. Gonzales, Joshua E. Schlieder, F. J. de Cos Juez

2 validated planets and 2 candidates are located in moderately bright stars ($m_{kep}<13$) and 2 validated planets and 3 candidates have derived orbital radius within the habitable zone according to optimistic models.

Earth and Planetary Astrophysics Solar and Stellar Astrophysics

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