Two Young Planetary Systems around Field Stars with Ages between 20 and 320 Myr from TESS

Autor: Jonathan Irwin, Rachel A. Matson, Elise Furlan, Eric L. N. Jensen, Lamisha Khan, Nicholas J. Scott, Thiam-Guan Tan, George Zhou, John F. Kielkopf, Andrew Vanderburg, Joseph E. Rodriguez, Guillermo Torres, Knicole D. Colón, Lars A. Buchhave, Anaka Landrigan, B. Wohler, Pamela Rowden, Allyson Bieryla, Steve B. Howell, David R. Anderson, Karen A. Collins, Jon M. Jenkins, Perry Berlind, Brad D. Carter, Richard G. West, George R. Ricker, Michael L. Calkins, David Charbonneau, K. I. Collins, D. A. Yahalomi, Gilbert A. Esquerdo, Sara Seager, David W. Latham, Andrew W. Mann, Rhodes Hart, Joshua N. Winn, Nicholas M. Law, Roland Vanderspek, Russel White, Tansu Daylan, Carl Ziegler, Ismael Mireles, Luke G. Bouma, Stephanie T. Douglas, Samuel N. Quinn, Chelsea X. Huang, Coel Hellier, C. E. Brasseur, Chris Stockdale

Publikováno v: Zhou, G, Quinn, S N, Irwin, J, Huang, C X, Collins, K A, Bouma, L G, Khan, L, Landrigan, A, Vanderburg, A M, Rodriguez, J E, Latham, D W, Torres, G, Douglas, S T, Bieryla, A, Esquerdo, G A, Berlind, P, Calkins, M L, Buchhave, L A, Charbonneau, D, Collins, K I, Kielkopf, J F, Jensen, E L N, Tan, T-G, Hart, R, Carter, B, Stockdale, C, Ziegler, C, Law, N, Mann, A W, Howell, S B, Matson, R A, Scott, N J, Furlan, E, White, R J, Hellier, C, Anderson, D R, West, R G, Ricker, G, Vanderspek, R, Seager, S, Jenkins, J M, Winn, J N, Mireles, I, Rowden, P, Yahalomi, D A, Wohler, B, Brasseur, C E, Daylan, T & Colón, K D 2021, ' Two Young Planetary Systems around Field Stars with Ages between 20 and 320 Myr from TESS ', Astrophysical Journal, vol. 161, no. 1, 2 . https://doi.org/10.3847/1538-3881/abba22

Planets around young stars trace the early evolution of planetary systems. We report the discovery and validation of two planetary systems with ages $\lesssim 300$ Myr from observations by the Transiting Exoplanet Survey Satellite. TOI-251 is a 40-32

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d68605efe750cbbe52687f58310ccac4
https://resolver.caltech.edu/CaltechAUTHORS:20201204-110355894

Interferometric Imaging of λ Andromedae: Evidence of Starspots and Rotation

Autor: J. Sturmann, Russel White, Nathalie Thureau, John D. Monnier, J. R. Parks, X. Che, E. Pedretti, H. A. McAlister, S. T. Ridgway, Gail Schaefer, T. ten Brummelaar, Neal J. Turner, Brian Kloppenborg, F. Baron, M. Zhao, Gregory W. Henry, L. Sturmann

Publikováno v: The Astrophysical Journal. 913:54

Presented are the first interferometric images of cool starspots on the chromospherically active giant λ Andromedae. Using the Michigan Infra-Red Combiner coupled to the Center for High Angular Resolution Astronomy Array, 26 interferometric observat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8635515cc2c49bfca4b478f2466a17fc
https://doi.org/10.3847/1538-4357/abb670

Retrieval of Precise Radial Velocities from Near-Infrared High Resolution Spectra of Low Mass Stars

Autor: Russel White, C. A. Beichman, Stephen R. Kane, Joseph Catanzarite, D. W. Latham, Lisa Prato, Peter Gao, Michael Bottom, Gautam Vasisht, Guillem Anglada-Escudé, Elise Furlan, Jonathan Gagné, Peter Plavchan, John Asher Johnson, David R. Ciardi, Timothy J. Crawford, C. Geneser, Raphaël Rougeot, K. von Braun, Carolyn Brinkworth, Angelle Tanner, Cassy Davison, Bertrand Mennesson, J. Kent Wallace

Publikováno v: NASA Astrophysics Data System

Given that low-mass stars have intrinsically low luminosities at optical wavelengths and a propensity for stellar activity, it is advantageous for radial velocity (RV) surveys of these objects to use near-infrared (NIR) wavelengths. In this work we d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7225bbc4ad97558091dc72c43246018

A SURVEY OF STELLAR FAMILIES: MULTIPLICITY OF SOLAR-TYPE STARS

Autor: David W. Latham, Douglas R. Gies, Harold A. McAlister, Russel White, Brian D. Mason, Deepak Raghavan, T. ten Brummelaar, Geoffrey W. Marcy, Todd J. Henry

Publikováno v: The Astrophysical Journal Supplement Series. 190:1-42

We present the results of a comprehensive assessment of companions to solar-type stars. A sample of 454 stars, including the Sun, was selected from the Hipparcos catalog with {\pi} > 40 mas, {\sigma}_{\pi}/{\pi} < 0.05, 0.5 < B - V < 1.0 (~ F6-K3), a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b50f343f34dcbd3008a7b1388da5ff27
https://doi.org/10.1088/0067-0049/190/1/1

Observations of T Tauri Disks at Sub‐AU Radii: Implications for Magnetospheric Accretion and Planet Formation

Autor: Rachel Akeson, Lynne A. Hillenbrand, Josh A. Eisner, Russel White, Anneila I. Sargent

Publikováno v: The Astrophysical Journal. 623:952-966

We determine inner disk sizes and temperatures for four solar-type (1-2 M$_{\odot}$) classical T Tauri stars (AS 207A, V2508 Oph, AS 205A, and PX Vul) using 2.2 $\mu$m observations from the Keck Interferometer. Nearly contemporaneous near-IR adaptive

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6759e5cba2fd5ee58e4fa6f59a395b5
https://doi.org/10.1086/428828