Results 1 to 10 of about 3,279 (221)

Sub-Neptunes Show a Stronger Correlation with Cold Jupiters than Super-Earths Especially in Metal-rich Systems

The Astrophysical Journal Letters
The correlation between the inner small planets and cold giants encodes the formation and evolution of planetary systems. It remains unclear if the correlation differs on the two sides of the radius valley.
Di-Chang Chen, Fei Dai, Bo Ma, Shang-Fei Liu, Cong Yu   +4 more
doaj   +1 more source

Toward High-precision Mass Measurements of Two Sub-Neptunes in the K2-266 Planetary System Through Transit Timing

The Astronomical Journal
Sub-Neptunes have been found to be one of the most common types of exoplanets, yet their physical parameters and properties are poorly determined and in need of further investigation.
Ing-Guey Jiang, Li-Chin Yeh, Billy Edwards, Ming Yang, Keivan G. Stassun, Napaporn A-thano   +5 more
doaj   +1 more source

Confirmation of Fe i on MASCARA-5 b’s Dayside Observed With EXPRES

The Astronomical Journal
MASCARA-5 b/TOI-1431 b is an ultra-hot Jupiter ( P _orb  = 2.650237 ± 0.000003 dayd, T _eq  = 2370 ± 70 K, M _p  = 3.12 ± 0.18 M _Jup , R _p  = 1.49 ± 0.05 R _Jup ) orbiting a bright Am star ( V  = 8.0 mag).
James T. Sikora, Joe Llama, Rachael M. Roettenbacher, Elisabeth M. Brann, Jean-Michel Désert, Alex S. Polanski, Malena Rice, Lily Zhao   +7 more
doaj   +1 more source

An Eccentric Sub-Neptune Moving Into the Evaporation Desert

The Astrophysical Journal Letters
Though missions such as Kepler, K2, and TESS have discovered >2000 sub-Neptune and Neptunian planets, there is a dearth of such planets at close-in ( P ≲ 3 days) orbits. This feature, called the Neptune desert or the evaporation desert, is believed to be
Sydney A. Jenkins, Andrew Vanderburg, Ritika Sethi, Sarah Millholland, Joseph E. Rodriguez, Luca Fossati, Andreas Krenn, Emily Pass, Alexander Venner, R. Paul Butler, Hugh Osborn, Aaron Householder, Carl Ziegler, Juliette Becker, Perry Berlind, Allyson Bieryla, Christopher Broeg, Michael L. Calkins, Jeffrey D. Crane, Tansu Daylan, Julien de Wit, Jason D. Eastman, David Ehrenreich, Gilbert A. Esquerdo, Michael Fausnaugh, Yadira Gaibor, David W. Latham, Monika Lendl, Andrew W. Mayo, Gaetano Scandariato, Steve Shectman, Stephanie Striegel, Johanna Teske, Thomas G Wilson   +33 more
doaj   +1 more source

TOI-2005b: An Eccentric Warm Jupiter in Spin-orbit Alignment

The Astronomical Journal
We report the discovery and characterization of TOI-2005 b, a warm Jupiter on an eccentric ( e  ∼ 0.59), 17.3 days orbit around a V _mag = 9.867 rapidly rotating F-star.
Allyson Bieryla, Jiayin Dong, George Zhou, Jason D. Eastman, L. C. Mayorga, David W. Latham, Brad Carter, Chelsea X. Huang, Samuel N. Quinn, Karen A. Collins, Lyu Abe, Yuri Beletsky, Rafael Brahm, Knicole D. Colón, Zahra Essack, Tristan Guillot, Thomas Henning, Melissa J. Hobson, Keith Horne, Jon M. Jenkins, Matías I. Jones, Andrés Jordán, David Osip, George R. Ricker, Joseph E. Rodriguez, Jack Schulte, Richard P. Schwarz, Sara Seager, Avi Shporer, Olga Suarez, Thiam-Guan Tan, Eric B. Ting, Amaury Triaud, Andrew Vanderburg, Jesus Noel Villaseñor, Noah Vowell, Cristilyn N. Watkins, Joshua N. Winn, Carl Ziegler   +38 more
doaj   +1 more source

Biases from Missing a Small Planet in High Multiplicity Systems

The Astrophysical Journal Letters
In an era when we are charting multiple planets per system, one might wonder the extent to which “missing” (or failing to detect) a planet can skew our interpretation of the system architecture. We address this question with a simple experiment: starting
C. Alexander Thomas, Lauren M. Weiss, Matthias Y. He   +2 more
doaj   +1 more source

A Complex Systems Approach to Exoplanet Atmospheric Chemistry: New Prospects for Ruling Out the Possibility of Alien Life As We Know It

The Planetary Science Journal
The near-term ability to characterize terrestrial exoplanet atmospheres may bring us closer to discovering alien life through atmospheric data. However, remotely detectable candidate biosignature gases are subject to false-positive signals because they ...
Theresa Fisher, Estelle Janin, Sara Imari Walker   +2 more
doaj   +1 more source

A Stellar magnesium to silicon ratio in the atmosphere of an exoplanet. [PDF]

Nat Commun
Sanchez JA, Smith PCB, Kanumalla K, Welbanks L, Line MR, Pelletier S, Desch S, Young P, Patience J, Bean J, Brogi M, Jaffe D, Mace GN, Mansfield MW, Panwar V, Parmentier V, Pino L, Savel AB, Sluijs LV, Wardenier JP.   +19 more
europepmc   +1 more source

A young progenitor for the most common planetary systems in the Galaxy. [PDF]

Nature
Livingston JH, Petigura EA, David TJ, Masuda K, Owen J, Nesvorný D, Batygin K, de Leon J, Mori M, Ikuta K, Fukui A, Watanabe N, Orell Miquel J, Murgas F, Parviainen H, Korth J, Libotte F, Abreu García N, Gallardo PPM, Narita N, Pallé E, Tamura M, Yonehara A, Ridden-Harper A, Bieryla A, Trani AA, Mamajek EE, Ciardi DR, Gorjian V, Hillenbrand LA, Rebull LM, Newton ER, Mann AW, Vanderburg A, Stefánsson G, Mahadevan S, Cañas C, Ninan J, Higuera J, Todorov K, Désert JM, Pino L.   +41 more
europepmc   +1 more source

Uncovering the rapidly evolving orbits of the dynamic TOI-201 system. [PDF]

Sci Adv
Mireles I, Ulmer-Moll S, Liveoak D, Dragomir D, Korth J, Venner A, Collins KA, Triaud AHMJ, Guillot T, Petit A, Carmichael T, Millholland S, Hallatt T, Parviainen H, Osborn HP, Rapetti D, Baycroft TA, Bhatnagar S, Bouchy F, Dancikova R, Figueira P, Lendl M, Udry S, Wheatley P, Abe L, Agabi A, Beltrame M, Bendjoya P, Deloupy V, Mékarnia D, Schmider FX, Suárez O, Barkaoui K, Horne K, Murgas F, Palle E, Schwarz RP, Sefako R, Shporer A, Srdoc G, Stockdale C, Wilkin FP, Hartman JD, Sgro LA, Tan TG, Jenkins JM, Bódi A, Havell D, Rivett D, Transom I.   +49 more
europepmc   +1 more source