Results 11 to 20 of about 765,419 (288)

Constraints on the Obliquities of Kepler Planet-hosting Stars [PDF]

The Astronomical Journal, 2017
Abstract Stars with hot Jupiters have obliquities ranging from 0° to 180°, but relatively little is known about the obliquities of stars with smaller planets. Using data from the California- Kepler Survey, we investigate the obliquities of stars with planets spanning a wide ...
Joshua N. Winn, Erik A. Petigura, Timothy D. Morton, Lauren M. Weiss, Fei Dai, Kevin C. Schlaufman, Andrew W. Howard, Howard Isaacson, Geoffrey W. Marcy, Anders Bo Justesen, Simon Albrecht   +10 more
openaire   +7 more sources

A Larger Sample Confirms Small Planets around Hot Stars Are Misaligned [PDF]

The Astrophysical Journal Letters
The distribution of stellar obliquities provides critical insight into the formation and evolution pathways of exoplanets. In the past decade, it was found that hot stars hosting hot Jupiters are more likely to have high obliquities than cool stars, but ...
Emma M. Louden, Songhu Wang, Joshua N. Winn, Erik A. Petigura, Howard Isaacson, Luke Handley, Samuel W. Yee, Corey Beard, Joseph M. Akana Murphy, Gregory Laughlin   +9 more
doaj   +4 more sources

B-type host stars revealed by exoplanets around massive secondary-clump giant stars [PDF]

Nature Communications
Exoplanets around massive young stars, including hot spectral-class B (B-type) stars, are rare but important for understanding how planets form and survive. Most known examples are either very distant companions found by direct imaging or extremely close-
Wen-Xu Lin, Sheng-Bang Qian, Qi-Bin Sun, Li-Ying Zhu, Wen-Ping Liao, Ting Li, Fu-Xing Li, Liang Liu, Xiang-Dong Shi, LinJia Li, Ergang Zhao, Huiting Zhang, Ping Li, Jing Li, Ming Lian   +14 more
doaj   +2 more sources

Simulating the environment around planet-hosting stars [PDF]

Astronomy & Astrophysics, 2016
15 pages, 13 + 2 figures, Accepted for publication in A& ...
Alvarado-Gómez, J. D., Hussain, G. A. J., Cohen, O., Drake, J. J., Garraffo, C., Grunhut, J., Gombosi, T. I.   +6 more
openaire   +3 more sources

Planets Around Solar Twins/Analogs (PASTA). I. High-precision Stellar Chemical Abundances for 17 Planet-hosting Stars and the Condensation Temperature Trend

The Astrophysical Journal
The Sun is depleted in refractory elements compared to nearby solar twins, which may be linked to the formation of giant or terrestrial planets. Here we present high-resolution, high signal-to-noise spectroscopic data for 17 solar-like stars hosting ...
Qinghui Sun, Sharon Xuesong Wang, Tianjun Gan, Chenyang Ji, Zitao Lin, Yuan-Sen Ting, Johanna Teske, Haining Li, Fan Liu, Xinyan Hua, Jiaxin Tang, Jie Yu, Jiayue Zhang, Mariona Badenas-Agusti, Andrew Vanderburg, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Jon M. Jenkins, Richard P. Schwarz, Tristan Guillot, Thiam-Guan Tan, Dennis M. Conti, Kevin I. Collins, Gregor Srdoc, Chris Stockdale, Olga Suarez, Roberto Zambelli, Don Radford, Khalid Barkaoui, Phil Evans, Allyson Bieryla   +32 more
doaj   +2 more sources

Robo-AO and SOAR High-Resolution Surveys of Exoplanet Hosting Stars [PDF]

Frontiers in Astronomy and Space Sciences, 2021
In the past decade, space-based transit surveys have delivered thousands of potential planet-hosting systems. Each of these needs to be vetted and characterized using follow-up high-resolution imaging.
Carl Ziegler, Nicholas Law, Christoph Baranec, Reed Riddle, Andrei Tokovinin   +4 more
doaj   +2 more sources

A BCool survey of the magnetic fields of planet-hosting solar-type stars [PDF]

, 2017
16 pages, 13 figures.International audienceWe present a spectropolarimetric snapshot survey of solar-type planet hosting stars. In addition to 14 planet-hosting stars observed as part of the BCool magnetic snapshot survey, we obtained magnetic ...
Morin, J., Jeffers, Sandra V., Mengel, M. W., Fares, R., Morin, Julien, Vidotto, A. A., Collaboration, The Bcool, Petit, P., Horner, J., King, R. R., Carter, Brad D., Marsden, S. C., King, R., Jeffers, S. V., Carter, B. D.   +14 more
core   +2 more sources

SILICON AND OXYGEN ABUNDANCES IN PLANET-HOST STARS [PDF]

The Astrophysical Journal, 2011
The positive correlation between planet detection rate and host star iron abundance lends strong support to the core accretion theory of planet formation. However, iron is not the most significant mass contributor to the cores of giant planets. Since giant planet cores are thought to grow from silicate grains with icy mantles, the likelihood of gas ...
Brugamyer, Erik, Dodson-Robinson, Sarah E., Cochran, William D., Sneden, Christopher   +3 more
openaire   +3 more sources

Detailed chemical compositions of planet-hosting stars a- I. Exploration of possible planet signatures [PDF]

, 2020
We present a line-by-line differential analysis of a sample of 16 planet-hosting stars and 68 comparison stars using high-resolution, high signal-to-noise ratio spectra gathered using Keck.
Ramirez, Ivan, M Asplund, Acuña, L., H S Wang, Wang, H S, Yong, David, Acuna, L, Melendez, J, Spina, Lorenzo, I Ramírez, Ramírez, I., Liu, Fan, L Spina, Asplund, Martin, F Liu, Liu, F, L Acuña, Spina, L, Meléndez, J., D Yong, J Meléndez, Wang, Haiyang S., Yong, D, Ramírez, I, Asplund, M   +24 more
core   +1 more source

The magnetic field of the planet-hosting star τ Bootis [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2007
Abstract We have obtained high-resolution spectropolarimetric data for the planet-hosting star τ Bootis, using the ESPaDOnS spectropolarimeter at the Canada–France–Hawaii Telescope (CFHT). A weak but clear Stokes V signature is detected on three of the four nights of 2006 June during which we have recorded data.
Catala, C., Donati, J.-F., Shkolnik, E., Bohlender, D., Alecian, E.   +4 more
openaire   +5 more sources