Results 61 to 70 of about 1,182,695 (373)

Kepler Transit Depths Contaminated by a Phantom Star [PDF]

, 2016
We present ground-based observations from the Discovery Channel Telescope (DCT) of three transits of Kepler-445c---a supposed super-Earth exoplanet with properties resembling GJ 1214b---and demonstrate that the transit depth is approximately 50 percent ...
Croll, Bryce, Dalba, Paul A., Kempton, Eliza M. -R., Muirhead, Philip S.   +3 more
core   +2 more sources

Tidal Dissipation in Satellites Prevents Hill Sphere Escape [PDF]

arXiv, 2023
The transit method is a promising means to detect exomoons, but few candidates have been identified. For planets close to their stars, the dynamical interaction between a satellite's orbit and the star must be important in their evolution. Satellites beyond synchronous orbit spiral out due to the tide raised on their planet, and it has been assumed ...
arxiv  

Stability of Satellites Around Close-in Extrasolar Giant Planets [PDF]

Astrophys.J. 575 (2002) 1087-1093, 2002
We investigate the long-term dynamical stability of hypothetical moons orbiting extrasolar giant planets. Stellar tides brake a planet's rotation and, together with tidal migration, act to remove satellites; this process limits the lifetimes of larger moons in extrasolar planetary systems.
arxiv   +1 more source

HI Properties of Satellite Galaxies around Local Volume Hosts [PDF]

, 2022
We present neutral atomic hydrogen (HI) observations using the Robert C. Byrd Green Bank Telescope (GBT) along the lines of sight to 49 dwarf satellite galaxy candidates around eight Local Volume systems (M104, M51, NGC1023, NGC1156, NGC2903, NGC4258, NGC4565, NGC4631).
arxiv   +1 more source

Revisiting the transits of CoRoT-7b at a lower activity level [PDF]

, 2014
CoRoT-7b, the first super-Earth with measured radius discovered, has opened the new field of rocky exoplanets characterisation. To better understand this interesting system, new observations were taken with the CoRoT satellite.
Aigrain, S., Almenara, J. M., Alonso, R., Barros, S. C. C., Bordé, R., Bouchy, F., Cabrera, J., Cameron, A. Collier, Chaintreuil, S., Csizmadia, Sz, Deeg, H. J., Deleuil, M., Diaz, R. F., Erikson, A., Fridlund, M., Gandolfi, D., Grziwa, S., Guenther, E., Guillot, T., Hatzes, A., Haywood, R., Lanza, A. F., Leger, A., Moutou, C., Ollivier, M., Pasternacki, T., Patzold, M., Rauer, H., Rouan, D., Santerne, A., Schneider, J., Wuchterl, G.   +31 more
core   +5 more sources

Yaw attitudes for BDS-3 IGSO and MEO satellites: estimation, validation and modeling with inter-satellite link observations [PDF]

arXiv, 2021
The disclosed satellite metadata as well as previous estimations using Revise Kinematic Precise Point Positioning (RKPPP) approach with L-band data have already demonstrated the continuous yaw steering model used by BDS-3 Medium Earth Orbit (MEO) satellites manufactured by China Academy of Space Technology (CAST) in deep eclipse seasons instead of the ...
arxiv  

Characterizing K2 planet discoveries : a super-Earth transiting the bright K dwarf HIP 116454 [PDF]

, 2014
We report the first planet discovery from the two-wheeled Kepler (K2) mission: HIP 116454 b. The host star HIP 116454 is a bright (V = 10.1, K = 8.0) K1 dwarf with high proper motion and a parallax-based distance of 55.2 ± 5.4 pc.
Angus, Ruth, Baranec, Christoph, Bieryla, Allyson, Boschin, Walter, Bowler, Brendan P., Buchhave, Lars A., Cameron, Andrew Collier, Cameron, Chris, Charbonneau, David, Cosentino, Rosario, Dumusque, Xavier, Figueira, Pedro, Guenther, David B., Harutyunyan, Avet, Hellier, Coel, Johnson, John Asher, Kuschnig, Rainer, Latham, David W., Law, Nicholas, Lopez-Morales, Mercedes, Lovis, Christophe, Matthews, Jaymie M., Mayor, Michel, Micela, Giusi, Moffat, Anthony F. J., Molinari, Emilio, Montet, Benjamin T., Pedani, Marco, Pepe, Francesco, Phillip, David F., Piotto, Giampaolo, Pollacco, Don, Queloz, Didier, Rice, Ken, Riddle, Reed, Rowe, Jason F., Rucinski, Slavek M., Sasselov, Dimitar, Segransan, Damien, Sozzetti, Alessandro, Szentgyorgyi, Andrew, Udry, Stephane, Vanderburg, Andrew, Watson, Chris, Weiss, Werner W., Zeng, Li   +45 more
core   +6 more sources

KELT-9 b’s Asymmetric TESS Transit Caused by Rapid Stellar Rotation and Spin–Orbit Misalignment [PDF]

Astronomical Journal, 2020
KELT-9 b is an ultra-hot Jupiter transiting a rapidly rotating, oblate early-A-type star in a polar orbit. We model the effect of rapid stellar rotation on KELT-9 b’s transit light curve using photometry from the Transiting Exoplanet Survey Satellite to ...
John P. Ahlers, Marshall C. Johnson, K. Stassun, K. Colón, J. Barnes, D. Stevens, T. Beatty, B. Gaudi, K. Collins, Joseph E. Rodriguez, G. Ricker, R. Vanderspek, D. Latham, S. Seager, J. Winn, J. Jenkins, D. Caldwell, R. Goeke, H. Osborn, M. Paegert, P. Rowden, P. Tenenbaum   +21 more
semanticscholar   +1 more source

Transiently Active Wnt/β-Catenin Signaling Is Not Required but Must Be Silenced for Stem Cell Function during Muscle Regeneration

Stem Cell Reports, 2014
Adult muscle’s exceptional capacity for regeneration is mediated by muscle stem cells, termed satellite cells. As with many stem cells, Wnt/β-catenin signaling has been proposed to be critical in satellite cells during regeneration.
Malea M. Murphy, Alexandra C. Keefe, Jennifer A. Lawson, Steven D. Flygare, Mark Yandell, Gabrielle Kardon   +5 more
doaj   +1 more source

Cumulant Green's function calculations of plasmon satellites in bulk sodium: influence of screening and the crystal environment [PDF]

Phys. Rev. B 97, 035137 (2018), 2017
We present ab initio calculations of the photoemission spectra of bulk sodium using different flavors of the cumulant expansion approximation for the Green's function. In particular, we study the dispersion and intensity of the plasmon satellites. We show that the satellite spectrum is much more sensitive to many details than the quasi-particle (QP ...
arxiv   +1 more source