Results 61 to 70 of about 46,669 (261)

The NASA High-Resolution Speckle Interferometric Imaging Program: Validation and Characterization of Exoplanets and Their Stellar Hosts

Frontiers in Astronomy and Space Sciences, 2021
Starting in 2008, NASA has provided the exoplanet community an observational program aimed at obtaining the highest resolution imaging available as part of its mission to validate and characterize exoplanets, as well as their stellar environments, in ...
Steve B. Howell, Nicholas J. Scott, Rachel A. Matson, Mark E. Everett, Elise Furlan, Crystal L. Gnilka, David R. Ciardi, Kathryn V. Lester   +7 more
doaj   +1 more source

Inhomogeneous terminators on the exoplanet WASP-39 b [PDF]

Nature
Transmission spectroscopy has been a workhorse technique used over the past two decades to constrain the physical and chemical properties of exoplanet atmospheres1–5.
N. Espinoza, M. Steinrueck, James Kirk, R. MacDonald, A. Savel, Anastasia Triantafillides, E. Kempton, Matthew M. Murphy, L. Carone, M. Zamyatina, D. Lewis, D. Samra, S. Kiefer, Emily Rauscher, D. Christie, N. Mayne, Ch. Helling, Z. Rustamkulov, V. Parmentier, E. May, A. Carter, Xi Zhang, M. L'opez-Morales, N. Allen, J. Blecic, L. Decin, L. Mancini, K. Molaverdikhani, B. Rackham, E. Pallé, Shang-Min Tsai, E. Ahrer, J. Bean, I. Crossfield, David Haegele, E. H'ebrard, L. Kreidberg, D. Powell, A. Schneider, L. Welbanks, P. Wheatley, R. Brahm, N. Crouzet   +42 more
semanticscholar   +1 more source

The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au [PDF]

Astronomical Journal, 2019
We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; from these detections and our contrast curves we infer the underlying ...
E. Nielsen, R. D. de Rosa, B. Macintosh, Jason J. Wang, J. Ruffio, E. Chiang, M. Marley, D. Saumon, D. Savransky, S. Ammons, V. Bailey, T. Barman, C. Blain, J. Bulger, A. Burrows, J. Chilcote, T. Cotten, I. Czekala, R. Doyon, G. Duchêne, T. Esposito, D. Fabrycky, M. Fitzgerald, K. Follette, J. Fortney, B. Gerard, S. Goodsell, J. Graham, A. Greenbaum, P. Hibon, S. Hinkley, L. Hirsch, J. Hom, L. Hung, Rebekah Ilene Dawson, P. Ingraham, P. Kalas, Q. Konopacky, J. Larkin, Eve J. Lee, Jonathan W. Lin, J. Maire, F. Marchis, C. Marois, S. Metchev, M. Millar-Blanchaer, K. Morzinski, R. Oppenheimer, D. Palmer, J. Patience, M. Perrin, L. Poyneer, L. Pueyo, R. Rafikov, A. Rajan, J. Rameau, F. Rantakyrö, B. Ren, A. Schneider, A. Sivaramakrishnan, I. Song, R. Soummer, M. Tallis, Sandrine Thomas, K. Ward-Duong, S. Wolff   +65 more
semanticscholar   +1 more source

A Guide to Realistic Uncertainties on the Fundamental Properties of Solar-type Exoplanet Host Stars [PDF]

Astrophysical Journal, 2020
Our understanding of the properties and demographics of exoplanets critically relies on our ability to determine the fundamental properties of their host stars. The advent of Gaia and large spectroscopic surveys has now made it possible, in principle, to
J. Tayar, Z. Claytor, D. Huber, J. V. van Saders   +3 more
semanticscholar   +1 more source

The Coming Emptiness: On the Meaning of the Emptiness of the Universe in Natural Philosophy

Philosophies, 2018
The cosmological relevance of emptiness—that is, space without bodies—is not yet sufficiently appreciated in natural philosophy. This paper addresses two aspects of cosmic emptiness from the perspective of natural philosophy: the distances to
Gregor Schiemann
doaj   +1 more source

Exploring and Validating Exoplanet Atmospheric Retrievals with Solar System Analog Observations

The Planetary Science Journal, 2023
Solar system observations that serve as analogs for exoplanet remote sensing data can provide important opportunities to validate ideas and models related to exoplanet environments.
Tyler D. Robinson, Arnaud Salvador
doaj   +1 more source

The Orbital Geometries and Stellar Obliquities of Exoplanet-hosting Multistar Systems [PDF]

Astronomical Journal
The current orbital geometries of exoplanet systems offer a fossilized record of the systems’ dynamical histories. A particularly rich set of dynamical mechanisms is available to exoplanets residing in multistar systems, which may have their evolution ...
M. Rice, Konstantin Gerbig, A. Vanderburg   +2 more
semanticscholar   +1 more source

exoplanet-dev/exoplanet: exoplanet v0.4.1

, 2020
0.4.1 (2020-11-15) ++++++++++++++++++ Fixes pickling error when sampling in parallel ...
emilygilbert, Dan Foreman-Mackey, Eric Agol, Tom Barclay, Ian Czekala, Luke Bouma, Rodrigo Luger, Adrian Price-Whelan, Timothy D Brandt   +8 more
core   +1 more source

Exoplanet transit data analysis

, 2022
Notebook on analysing exoplanet transit ...
Babatunde Akinsanmi
core   +1 more source

HARPS-N @ TNG, two year harvesting data : performances and results [PDF]

, 2014
The planet hunter HARPS-N[1], in operation at the Telescopio Nazionale Galileo (TNG)[13] from April 2012 is a highresolution spectrograph designed to achieve a very high radial velocity precision measurement thanks to an ultra stable environment and in a
Latham, D.W., Ian Hughes, David Henry, Bezawada, N., Fatemeh Motalebi, Glenday, A.G., Emilio Molinari, Michel Fleury, Pepe, F., Charles Maire, Phillips, D.F., Rosario Cosentino, Manuel Gonzalez, Figueira, P., Nicolas Buchschacher, Fleury, M., Gonzalez, M., Udry, S., Andrew C. Cameron, Cosentino, R., Francesco Pepe, Stephane Udry, Alexander G. Glenday, Pedro Figueira, Henry, D., Naidu Bezawada, Molinari, E., Adriano Ghedina, David Forrest Phillips, Maire, C., David W. Latham, Hughes, I., Jose Guerra, Christophe Lovis, Buchschacher, N., Motalebi, F., Lovis, C., Cameron, A.C., Guerra, J., Ghedina, A., Cameron, A.C.; id_orcid   +40 more
core   +1 more source