Results 41 to 50 of about 1,148 (222)

Spitzer Transit and Secondary Eclipse Photometry of GJ 436b [PDF]

open access: yesThe Astrophysical Journal, 2007
We report the results of infrared (8 micron) transit and secondary eclipse photometry of the hot Neptune exoplanet, GJ436b using Spitzer. The nearly photon-limited precision of these data allow us to measure an improved radius for the planet, and to detect the secondary eclipse.
Deming, Drake   +6 more
openaire   +3 more sources

The Breakthrough Listen Search for Intelligent Life: Detection and Characterization of Anomalous Transits in Kepler Lightcurves

open access: yesThe Astronomical Journal, 2023
Never before has the detection and characterization of exoplanets via transit photometry been as promising and feasible as it is now, due to the increasing breadth and sensitivity of time domain optical surveys.
Anna Zuckerman   +4 more
doaj   +1 more source

Photometry and transit modelling of exoplanet WASP-140b

open access: yes, 2022
Accepted by JAAVSO, 12 pages, 5 figures, 2 ...
North, Allen, Banks, Timothy
openaire   +2 more sources

Refining the Transit-timing and Photometric Analysis of TRAPPIST-1: Masses, Radii, Densities, Dynamics, and Ephemerides

open access: yesThe Planetary Science Journal, 2021
We have collected transit times for the TRAPPIST-1 system with the Spitzer Space Telescope over four years. We add to these ground-based, HST, and K2 transit-time measurements, and revisit an N -body dynamical analysis of the seven-planet system using ...
Eric Agol   +34 more
doaj   +1 more source

Exoplanet characterization by multi-observatory transit photometry with TESS and CHEOPS [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
Space-based photometric surveys have discovered large numbers of planets transiting other stars, but these observe in a single band-pass and yield only the planet radius, orbital period, and transit duration. Information on the masses, compositions, and any atmospheres of these planets requires additional observations from the ground or space.
Eric Gaidos   +3 more
openaire   +4 more sources

IRSF SIRIUS JHKs Simultaneous Transit Photometry of GJ 1214b [PDF]

open access: yesPublications of the Astronomical Society of Japan, 2013
Abstract We report on the high-precision transit photometry of GJ 1214b in JHK$ _{\rm s}$ bands simultaneously taken with the SIRIUS camera on the Infrared Survey Facility 1.4 m telescope located in Sutherland, South Africa. Our Markov-Chain Monte Carlo analysis shows that observed planet-to-star radius ratios in the JHK$ _{\rm s}$ bands
Shogo Nishiyama   +7 more
openaire   +4 more sources

UBV(RI)C photometry of transiting planet hosting stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2011
We present new UBV(RI)_C photometry of 22 stars that host transiting planets, 19 of which were discovered by the WASP survey. We use these data together with 2MASS JHK_S photometry to estimate the effective temperature of these stars using the infrared flux method. We find that the effective temperature estimates for stars discovered by the WASP survey
Maxted, P.F.L., Koen, Chris, Smalley, B.
openaire   +5 more sources

Characterizing transiting extrasolar planets with narrow-band photometry and GTC/OSIRIS [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2010
9 pages, including 3 figures and 2 tables; accepted for publication in ...
Knicole D. Colón   +4 more
openaire   +4 more sources

Validating the Orbital Periods of the Coolest TESS Planet Candidates

open access: yesThe Astronomical Journal
When an exoplanet passes in front of its host star, the resulting eclipse causes an observable decrease in stellar flux, and when multiple such transits are detected, the orbital period of the exoplanet can be determined. Over the past seven years NASA’s
Dillon J. Bass, Daniel C. Fabrycky
doaj   +1 more source

Multifunctional Neural Probes Enable Bidirectional Electrical, Optical, and Chemical Recording and Stimulation In Vivo

open access: yesAdvanced Materials, EarlyView.
Convergence drawing is used to create flexible, microscale, multifunctional fiber‐based neural probes. Optimized materials selection enables individual devices to perform neural recording, electrical stimulation, optogenetics, fiber photometry, fluid delivery, and voltammetric neurotransmitter detection in rodents.
Nicolette Driscoll   +16 more
wiley   +1 more source

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