Zobrazeno 1 - 10
of 105
pro vyhledávání: '"James E Owen"'
Autor:
Munazza K. Alam, James Kirk, Leonardo A. Dos Santos, Patrick McCreery, Andrew P. Allan, James E. Owen, Aline A. Vidotto, Romain Allart, Vincent Bourrier, Néstor Espinoza, George W. King, Mercedes López-Morales, Julia V. Seidel
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 102 (2024)
We search for excess in-transit absorption of neutral helium at 1.083 μ m in the atmospheres of the young (
Externí odkaz:
https://doaj.org/article/8d75c3a49d494ca8aab11b848346bad3
Autor:
Megan Weiner Mansfield, Michael R. Line, Joost P. Wardenier, Matteo Brogi, Jacob L. Bean, Hayley Beltz, Peter Smith, Joseph A. Zalesky, Natasha Batalha, Eliza M.-R. Kempton, Benjamin T. Montet, James E. Owen, Peter Plavchan, Emily Rauscher
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 14 (2024)
Measurements of the carbon-to-oxygen (C/O) ratios of exoplanet atmospheres can reveal details about their formation and evolution. Recently, high-resolution cross-correlation analysis has emerged as a method of precisely constraining the C/O ratios o
Externí odkaz:
https://doaj.org/article/ae9c67accee14553b3e530084e193cda
Autor:
Aaron Householder, Lauren M. Weiss, James E. Owen, Howard Isaacson, Andrew W. Howard, Daniel Fabrycky, Leslie A. Rogers, Hilke E. Schlichting, Benjamin J. Fulton, Erik A. Petigura, Steven Giacalone, Joseph M. Akana Murphy, Corey Beard, Ashley Chontos, Fei Dai, Judah Van Zandt, Jack Lubin, Malena Rice, Alex S. Polanski, Paul Dalba, Sarah Blunt, Emma V. Turtelboom, Ryan Rubenzahl, Casey Brinkman
Publikováno v:
The Astronomical Journal, Vol 167, Iss 2, p 84 (2024)
An intriguing pattern among exoplanets is the lack of detected planets between approximately 1.5 R _⊕ and 2.0 R _⊕ . One proposed explanation for this “radius gap” is the photoevaporation of planetary atmospheres, a theory that can be tested
Externí odkaz:
https://doaj.org/article/f8b0d835bd28431b9c8fb23d12f92dc7
Publikováno v:
The Astrophysical Journal Letters, Vol 955, Iss 1, p L11 (2023)
Theoretical models indicate that photoevaporative and magnetothermal winds play a crucial role in the evolution and dispersal of protoplanetary disks and affect the formation of planetary systems. However, it is still unclear what wind-driving mechan
Externí odkaz:
https://doaj.org/article/04857d02ce584caf93b00bc0a37861a9
Publikováno v:
The Astrophysical Journal Letters, Vol 947, Iss 1, p L19 (2023)
The population of small, close-in exoplanets is bifurcated into super-Earths and sub-Neptunes. We calculate physically motivated mass–radius relations for sub-Neptunes, with rocky cores and H/He-dominated atmospheres, accounting for their thermal e
Externí odkaz:
https://doaj.org/article/475e7281d41d4ed09007e91f698f2fb5
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 522:1583-1590
The spin evolution of main sequence stars has long been of interest for basic stellar evolution, stellar aging, stellar activity, and consequent influence on companion planets. Observations of older than solar late-type main-sequence stars have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bf5d15a8eb402de49226854eb8e440a
https://doi.org/10.1093/mnras/stad981
https://doi.org/10.1093/mnras/stad981
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 509:5974-5991
Close-in super-Earths are the most abundant exoplanets known. It has been hypothesized that they form in the inner regions of protoplanetary discs, out of the dust that may accumulate at the boundary between the inner region susceptible to the magnet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ecbc72d8160fc328f98b7cd9adcef5b
https://doi.org/10.1093/mnras/stab3370
https://doi.org/10.1093/mnras/stab3370
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 508:5886-5902
The EUV/X-ray photoevaporation and core-powered mass-loss models are both capable of reproducing the bimodality in the sizes of small, close-in exoplanets observed by the \textit{Kepler} space mission, often referred to as the "radius gap". However,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69f41352fdd5c0af4ecf17dfad39e078
https://doi.org/10.1093/mnras/stab2897
https://doi.org/10.1093/mnras/stab2897
Ultra-short period planets offer a window into the poorly understood interior composition of exoplanets through material evaporated from their rocky interiors. Among these objects are a class of disintegrating planets, observed when their dusty tails
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8914b6814d492f04c08921e3c7b0ee6
http://hdl.handle.net/10044/1/100529
http://hdl.handle.net/10044/1/100529
Autor:
James E. Owen, James G. Rogers
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 503:1526-1542
The radius distribution of small, close-in exoplanets has recently been shown to be bimodal. The photoevaporation model predicted this bimodality. In the photoevaporation scenario, some planets are completely stripped of their primordial H/He atmosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd838c4e8959864997802f879360e63c
https://doi.org/10.1093/mnras/stab529
https://doi.org/10.1093/mnras/stab529