Results 71 to 80 of about 3,427 (167)

Revising the Giant Planet Mass–Metallicity Relation: Deciphering the Formation Sequence of Giant Planets

The Astrophysical Journal
The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles.
Yayaati Chachan, Jonathan J. Fortney, Kazumasa Ohno, Daniel Thorngren, Ruth Murray-Clay   +4 more
doaj   +1 more source

Hot Moons and Cool Stars

, 2013
The exquisite photometric precision of the Kepler space telescope now puts the detection of extrasolar moons at the horizon. Here, we firstly review observational and analytical techniques that have recently been proposed to find exomoons.
Barnes, Rory, Heller, René
core   +1 more source

Thermal Emission and Confirmation of the Frigid White Dwarf Exoplanet WD 1856+534 b

The Astrophysical Journal Letters
We report the detection of thermal emission from and confirm the planetary nature of WD 1856+534 b, the first transiting planet known to orbit a white dwarf (WD) star.
Mary Anne Limbach, Andrew Vanderburg, Ryan J. MacDonald, Kevin B. Stevenson, Sydney Jenkins, Simon Blouin, Emily Rauscher, Rachel Bowens-Rubin, Elena Gallo, James Mang, Caroline V. Morley, David K. Sing, Christopher O’Connor, Alexander Venner, Siyi Xu   +14 more
doaj   +1 more source

Using Satellites to Probe Extrasolar Planet Formation

, 2012
Planetary satellites are an integral part of the heirarchy of planetary systems. Here we make two predictions concerning their formation. First, primordial satellites, which have an array of distinguishing characteristics, form only around giant planets.
Canup, Hartmann, Jason W. Barnes, Léger, Paul Withers, Reipurth, Stern, Stevenson   +7 more
core   +1 more source

Structure and Evolution of Nearby Stars with Planets. I. Short-Period Systems

, 1998
Using the Yale stellar evolution code, we have calculated theoretical models for nearby stars with planetary-mass companions in short-period nearly circular orbits: 51 Pegasi, Tau Bootis, Upsilon Andromedae, Rho Cancri, and Rho Coronae Borealis.
Alexander J. B., Alison Sills, Arribas S., Bakos G. G., Baliunas S. L., Barnes T. G., Beckwith S. V. W., Black D., Blackwell D. E., Boden A., Bohm-Vitense E., Boss A. P., Campbell B., Christensen-Dalsgaard J., Drake S. A., Edvardsson B., Edvardsson B., Eric B. Ford, Favata F., Francois P., Frederic A. Rasio, Fuhrmann K., Fuhrmann K., Gatewood G. D., Gonzalez G., Gonzalez G., Gonzalez G., Gratton R. G., Hearnshaw J. B., Hearnshaw J. B., Holman M., Imbert M., Jeffery C. S., Kubat J., Kunzl M., Kuroczkin D., Lopez R. J. G., Malhotra R., Mannings V., Marsakov V. A., Noyes R. W., Pagel B. E. J., Perrin M. N., Perryman M. A. C., Powell A. L. T., Pravdo S. H., Schaerer D., Schaerer D., Schaller G., Spite M., Thevenin F., Thevenin F., Tomkin J., Unwin S., Verbunt F., Willems B., Xu Z., Zahn J.-P., Zahn J.-P.   +58 more
core   +2 more sources

Searching for Planets Orbiting Vega with the James Webb Space Telescope

The Astronomical Journal
The most prominent of the IRAS debris disk systems, α Lyrae (Vega), at a distance of 7.7 pc, has been observed by both the NIRCam and MIRI instruments on the James Webb Space Telescope.
Charles Beichman, Geoffrey Bryden, Jorge Llop-Sayson, Marie Ygouf, Alexandra Greenbaum, Jarron Leisenring, Andras Gaspar, John Krist, George Rieke, Schuyler Wolff, Kate Su, Klaus Hodapp, Michael Meyer, Doug Kelly, Martha Boyer, Doug Johnstone, Scott Horner, Marcia Rieke   +17 more
doaj   +1 more source

The Observational Case for Jupiter Being a Typical Massive Planet

, 2002
We identify a subsample of the recently detected extrasolar planets that is minimally affected by the selection effects of the Doppler detection method.
Grether, Daniel, Lineweaver, Charles H.
core   +1 more source

Are extrasolar oceans common throughout the Galaxy?

, 2007
Light and cold extrasolar planets such as OGLE 2005-BLG-390Lb, a 5.5 Earth-mass planet detected via microlensing, could be frequent in the Galaxy according to some preliminary results from microlensing experiments.
Beaulieu, Bond, Broeg, Cassan, Cassan, Chabrier, Dominik, Ehrenreich, Fortney, Gould, Hussmann, Hussmann, Kubas, Kuchner, Laughlin, Léger, Rivera, Sato, Schneider, Selsis, Sotin, Spohn, Udalski, Valencia, Valencia, Wuchterl   +25 more
core   +4 more sources

The Evolution of Jupiter and Saturn as a Function of the Rρ Parameter

The Astrophysical Journal
Computed using the APPLE planetary evolution code, we present updated evolutionary models for Jupiter and Saturn that incorporate helium rain, nonadiabatic thermal structures, and “fuzzy” extended heavy-element cores.
Ankan Sur, Adam Burrows, Roberto Tejada Arevalo, Yubo Su   +3 more
doaj   +1 more source

Evolution of Semiconvective Staircases in Rotating Flows: Consequences for Fuzzy Cores in Giant Planets

The Astrophysical Journal Letters
Recent observational constraints on the internal structure of Jupiter and Saturn suggest that these planets have “fuzzy” cores, i.e., gradients of the concentration of heavy elements that might span a large fraction of the planet’s radius.
J. R. Fuentes, Bradley W. Hindman, Adrian E. Fraser, Evan H. Anders   +3 more
doaj   +1 more source