Results 51 to 60 of about 1,052,156 (237)

Enhanced Lidov–Kozai migration and the formation of the transiting giant planet WD 1856+534 b [PDF]

, 2020
We investigate the possible origin of the transiting giant planet WD1856+534b, the first strong exoplanet candidate orbiting a white dwarf, through high-eccentricity migration (HEM) driven by the Lidov-Kozai (LK) effect.
Christopher E. O’Connor, B. Liu, D. Lai   +2 more
semanticscholar   +1 more source

The Aligned Orbit of the Eccentric Proto Hot Jupiter TOI-3362b

The Astrophysical Journal Letters, 2023
High-eccentricity tidal migration predicts the existence of highly eccentric proto hot Jupiters on the “tidal circularization track,” meaning that they might eventually become hot Jupiters, but that their migratory journey remains incomplete.
Juan I. Espinoza-Retamal, Rafael Brahm, Cristobal Petrovich, Andrés Jordán, Guđmundur Stefánsson, Elyar Sedaghati, Melissa J. Hobson, Diego J. Muñoz, Gavin Boyle, Rodrigo Leiva, Vincent Suc   +10 more
doaj   +1 more source

Rotation periods of exoplanet host stars [PDF]

, 2010
The stellar rotation periods of ten exoplanet host stars have been determined using newly analysed Ca II H & K flux records from Mount Wilson Observatory and Stromgren b, y photometric measurements from Tennessee State University's automatic photometric ...
Baliunas, Baliunas, Barnes, Benedict, Butler, Butler, C. A. Watson, Catala, Collier Cameron, Collier Cameron, Collier Cameron, Cox, Croll, Donahue, Donahue, Donati, E. K. Simpson, Fischer, Fischer, Fischer, Frick, G. W. Henry, Greaves, Greaves, Hale, Henry, Henry, Henry, Henry, Henry, Henry, Henry, Horne, Korzennik, Kozai, Lin, Lovis, Mayor, Mayor, McArthur, McLaughlin, Nagasawa, Narita, Noyes, Paulson, Prato, Queloz, Queloz, Rasio, Rossiter, S. L. Baliunas, Saar, Scargle, Shkolnik, Shkolnik, Takeda, Triaud, Udry, Valenti, Vogt, Walker, Watson, Weidenschilling, Winn, Winn, Wright, Wright, Wu   +67 more
core   +3 more sources

THE IMPRINT OF EXOPLANET FORMATION HISTORY ON OBSERVABLE PRESENT-DAY SPECTRA OF HOT JUPITERS [PDF]

, 2016
The composition of a planet’s atmosphere is determined by its formation, evolution, and present-day insolation. A planet’s spectrum therefore may hold clues on its origins.
C. Mordasini, R. Boekel, P. Mollière, T. Henning, B. Benneke   +4 more
semanticscholar   +1 more source

Orbital Alignment of the Eccentric Warm Jupiter TOI-677 b

The Astronomical Journal, 2023
Warm Jupiters lay out an excellent laboratory for testing models of planet formation and migration. Their separation from the host star makes tidal reprocessing of their orbits ineffective, which preserves the orbital architectures that result from the ...
Elyar Sedaghati, Andrés Jordán, Rafael Brahm, Diego J. Muñoz, Cristobal Petrovich, Melissa J. Hobson   +5 more
doaj   +1 more source

Discovery of a Transiting Adolescent Sub-Neptune Exoplanet with K2 [PDF]

Astronomical Journal, 2018
The role of stellar age in the measured properties and occurrence rates of exoplanets is not well understood. This is in part due to a paucity of known young planets and the uncertainties in age-dating for most exoplanet host stars.
T. David, E. Mamajek, A. Vanderburg, J. Schlieder, Makennah Bristow, E. Petigura, D. Ciardi, I. Crossfield, H. Isaacson, A. Cody, J. Stauffer, L. Hillenbrand, A. Bieryla, D. Latham, B. Fulton, L. Rebull, C. Beichman, E. Gonzales, L. Hirsch, A. Howard, G. Vasisht, M. Ygouf   +21 more
semanticscholar   +1 more source

Prospects from TESS and Gaia to Constrain the Flatness of Planetary Systems

The Astronomical Journal, 2023
The mutual inclination between planets orbiting the same star provides key information to understand the formation and evolution of multiplanet systems.
Juan I. Espinoza-Retamal, Wei Zhu, Cristobal Petrovich   +2 more
doaj   +1 more source

Exoplanets - search methods, discoveries, and prospects for astrobiology [PDF]

, 2008
Whereas the Solar System has Mars and Europa as the best candidates for finding fossil/extant life as we know it - based on complex carbon compounds and liquid water - the 263 (non-pulsar) planetary systems around other stars as known at 15 September ...
Jones, Barrie W
core   +2 more sources

Atmospheric signatures of giant exoplanet formation by pebble accretion [PDF]

, 2016
Atmospheric chemical abundances of giant planets lead to important constraints on planetary formation and migration. Studies have shown that giant planets that migrate through the protoplanetary disk can accrete substantial amounts of oxygen-rich ...
N. Madhusudhan, B. Bitsch, A. Johansen, L.E.J. Eriksson   +3 more
semanticscholar   +1 more source

Exoplanets Torqued by the Combined Tides of a Moon and Parent Star [PDF]

, 2018
In recent years, there has been interest in Earth-like exoplanets in the habitable zones of low mass stars ($\sim0.1-0.6\,M_\odot$). Furthermore, it has been argued that a large moon may be important for stabilizing conditions on a planet for life. If these two features are combined, then an exoplanet can feel a similar tidal influence from both its ...
arxiv   +1 more source