J
Joseph M. Akana Murphy
Researcher at University of California, Santa Cruz
Publications - 38
Citations - 316
Joseph M. Akana Murphy is an academic researcher from University of California, Santa Cruz. The author has contributed to research in topics: Planet & Exoplanet. The author has an hindex of 7, co-authored 24 publications receiving 114 citations.
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Journal ArticleDOI
The TESS-Keck Survey I: A Warm Sub-Saturn-Mass Planet and a Caution about Stray Light in TESS Cameras
Paul A. Dalba,Arvind F. Gupta,Joseph E. Rodriguez,Diana Dragomir,Chelsea X. Huang,Stephen R. Kane,Samuel N. Quinn,Allyson Bieryla,Gilbert A. Esquerdo,Benjamin J. Fulton,Nicholas Scarsdale,Natalie M. Batalha,Corey Beard,Aida Behmard,Ashley Chontos,Ian J. M. Crossfield,Courtney D. Dressing,Steven Giacalone,Michelle L. Hill,Lea A. Hirsch,Andrew W. Howard,Daniel Huber,Howard Isaacson,Howard Isaacson,Molly R. Kosiarek,Jack Lubin,Andrew W. Mayo,Andrew W. Mayo,Teo Mocnik,Joseph M. Akana Murphy,Erik A. Petigura,Paul Robertson,Lee J. Rosenthal,Arpita Roy,Ryan A. Rubenzahl,Judah Van Zandt,Lauren M. Weiss,Emil Knudstrup,M. F. Andersen,Frank Grundahl,Xinyu Yao,Joshua Pepper,Steven Villanueva,David R. Ciardi,Ryan Cloutier,Tom Jacobs,Martti H. Kristiansen,Daryll LaCourse,Monika Lendl,Monika Lendl,H. P. Osborn,H. P. Osborn,Enric Palle,Keivan G. Stassun,Keivan G. Stassun,Daniel J. Stevens,George R. Ricker,Roland Vanderspek,David W. Latham,Sara Seager,Joshua N. Winn,Jon M. Jenkins,Douglas A. Caldwell,Douglas A. Caldwell,Tansu Daylan,William Fong,Robert F. Goeke,Mark E. Rose,Pamela Rowden,Joshua E. Schlieder,Jeffrey C. Smith,Jeffrey C. Smith,Andrew Vanderburg +72 more
TL;DR: In this article, the authors reported the detection of a Saturn-size exoplanet orbiting HD 332231 (TOI 1456) in light curves from the Transiting Exoplanet Survey Satellite (TESS).
Journal ArticleDOI
The TESS-Keck Survey. II. An Ultra-short-period Rocky Planet and Its Siblings Transiting the Galactic Thick-disk Star TOI-561
Lauren M. Weiss,Fei Dai,Daniel Huber,John M. Brewer,Karen A. Collins,David R. Ciardi,Elisabeth Matthews,Carl Ziegler,Steve B. Howell,Natalie M. Batalha,Ian Crossfield,Courtney D. Dressing,Benjamin J. Fulton,Andrew W. Howard,Howard Isaacson,Howard Isaacson,Stephen R. Kane,Erik A. Petigura,Paul Robertson,Arpita Roy,Ryan A. Rubenzahl,Joseph D. Twicken,Joseph D. Twicken,Zachary R. Claytor,Keivan G. Stassun,Mason G. MacDougall,Ashley Chontos,S. Giacalone,Paul A. Dalba,Teo Mocnik,Michelle L. Hill,Corey Beard,Joseph M. Akana Murphy,Lee J. Rosenthal,Aida Behmard,Judah Van Zandt,J. Lubin,Molly R. Kosiarek,Michael B. Lund,Jessie L. Christiansen,Rachel A. Matson,Charles Beichman,Joshua E. Schlieder,Erica J. Gonzales,Cesar Briceno,Nicholas M. Law,Andrew W. Mann,K. I. Collins,Phil Evans,Akihiko Fukui,Akihiko Fukui,Eric L. N. Jensen,Felipe Murgas,Felipe Murgas,Norio Narita,Enric Palle,Enric Palle,Hannu Parviainen,Hannu Parviainen,Richard P. Schwarz,Thiam-Guan Tan,Jack S. Acton,Edward M. Bryant,Alexander Chaushev,Samuel Gill,Philipp Eigmüller,Jon M. Jenkins,George R. Ricker,Sara Seager,Joshua N. Winn +69 more
TL;DR: The discovery of TOI-561, a multi-planar system in the galactic thick disk that contains a rocky, ultra-short-period planet was reported in this article.
Journal ArticleDOI
The TESS–Keck Survey. IV. A Retrograde, Polar Orbit for the Ultra-low-density, Hot Super-Neptune WASP-107b
Ryan A. Rubenzahl,Fei Dai,Andrew W. Howard,Ashley Chontos,Steven Giacalone,Jack Lubin,Lee J. Rosenthal,Howard Isaacson,Howard Isaacson,Natalie M. Batalha,Ian J. M. Crossfield,Courtney D. Dressing,Benjamin J. Fulton,Daniel Huber,Stephen R. Kane,Erik A. Petigura,Paul Robertson,Arpita Roy,Arpita Roy,Lauren M. Weiss,Corey Beard,Michelle L. Hill,Andrew W. Mayo,Teo Mocnik,Joseph M. Akana Murphy,Nicholas Scarsdale +25 more
TL;DR: In this paper, the authors measured the Rossiter-McLaughlin effect of WASP-107b during a single transit with Keck/HIRES and found the sky-projected inclination relative to its host star's rotation axis, to be $|\lambda| = {118}^{+38}_{-19}$ degrees.
Journal ArticleDOI
The TESS-Keck Survey. III. A Stellar Obliquity Measurement of TOI-1726 c
Fei Dai,Arpita Roy,Benjamin J. Fulton,Paul Robertson,Lea A. Hirsch,Howard Isaacson,Simon Albrecht,Andrew W. Mann,Martti H. Kristiansen,Natalie M. Batalha,Corey Beard,Aida Behmard,Ashley Chontos,Ian Crossfield,Paul A. Dalba,Courtney D. Dressing,S. Giacalone,Michelle L. Hill,Andrew W. Howard,Daniel Huber,Stephen R. Kane,Molly R. Kosiarek,J. Lubin,Andrew W. Mayo,Teo Mocnik,Joseph M. Akana Murphy,Erik A. Petigura,Lee J. Rosenthal,Ryan A. Rubenzahl,Nicholas Scarsdale,Lauren M. Weiss,Judah Van Zandt,George R. Ricker,Roland Vanderspek,David W. Latham,Sara Seager,Joshua N. Winn,Jon M. Jenkins,Douglas A. Caldwell,Douglas A. Caldwell,David Charbonneau,Tansu Daylan,Maximilian N. Günther,Edward H. Morgan,Samuel N. Quinn,Mark E. Rose,Jeffrey C. Smith,Jeffrey C. Smith +47 more
TL;DR: In this article, the authors reported the measurement of a spectroscopic transit of TOI-1726c, one of two planets transiting a G-type star with V = 6.9 in the Ursa Major Moving Group (~400 Myr).
Journal ArticleDOI
TOI-1235 b: a keystone super-Earth for testing radius valley emergence models around early M dwarfs
Ryan Cloutier,Joseph E. Rodriguez,Jonathan Irwin,David Charbonneau,Keivan G. Stassun,Annelies Mortier,David W. Latham,Howard Isaacson,Andrew W. Howard,Stéphane Udry,Thomas G. Wilson,Christopher A. Watson,Matteo Pinamonti,F. Lienhard,Paolo Giacobbe,P. Guerra,Karen A. Collins,Allyson Beiryla,Gilbert A. Esquerdo,Elisabeth Matthews,Rachel A. Matson,Steve B. Howell,Elise Furlan,Ian J. M. Crossfield,Jennifer G. Winters,Chantanelle Nava,Kristo Ment,Eric D. Lopez,George R. Ricker,Roland Vanderspek,Sara Seager,Jon M. Jenkins,Eric B. Ting,Peter Tenenbaum,Alessandro Sozzetti,Lizhou Sha,Damien Ségransan,Joshua E. Schlieder,Dimitar Sasselov,Arpita Roy,Paul Robertson,Ken Rice,Ennio Poretti,Giampaolo Piotto,David F. Phillips,Joshua Pepper,Francesco Pepe,Emilio Molinari,Teo Mocnik,Giuseppina Micela,Michel Mayor,Aldo F. M. Fiorenzano,F. Mallia,Jack Lubin,Christophe Lovis,Mercedes Lopez-Morales,Molly R. Kosiarek,John F. Kielkopf,Stephen R. Kane,Eric L. N. Jensen,Giovanni Isopi,Daniel Huber,Michelle L. Hill,Avet Harutyunyan,Erica J. Gonzales,Steven Giacalone,Adriano Ghedina,Andrea Ercolino,Xavier Dumusque,Courtney D. Dressing,Mario Damasso,Paul A. Dalba,Rosario Cosentino,Dennis M. Conti,Knicole D. Colón,Kevin I. Collins,Andrew Collier Cameron,David R. Ciardi,Jessie L. Christiansen,Ashley Chontos,Massimo Cecconi,Douglas A. Caldwell,Christopher J. Burke,Lars A. Buchhave,Charles A. Beichman,Aida Behmard,Corey Beard,Joseph M. Akana Murphy +87 more
TL;DR: To confirm the TESS planet discovery using reconnaissance spectroscopy, ground-based photometry, high-resolution imaging, and a set of 38 precise radial velocities (RVs) from HARPS-N and HIRES, this article measured a planet mass of 6.91 ± 0.5% at 90% confidence, which implies an iron core mass fraction of 20% in the absence of a gaseous envelope.