Results 11 to 20 of about 254,493 (202)

TERMS PHOTOMETRY OF KNOWN TRANSITING EXOPLANETS [PDF]

open access: yesThe Astronomical Journal, 2011
The Transit Ephemeris Refinement and Monitoring Survey (TERMS) conducts radial velocity and photometric monitoring of known exoplanets in order to refine planetary orbits and predictions of possible transit times. This effort is primarily directed towards planets not known to transit, but a small sample of our targets consist of known transiting ...
Dragomir, Diana   +12 more
core   +9 more sources

A SEARCH FOR THE TRANSIT OF HD 168443b: IMPROVED ORBITAL PARAMETERS AND PHOTOMETRY [PDF]

open access: yesThe Astrophysical Journal, 2011
The discovery of transiting planets around bright stars holds the potential to greatly enhance our understanding of planetary atmospheres. In this work we present the search for transits of HD 168443b, a massive planet orbiting the bright star HD 168443 V=6.92 with a period of 58.11 days.
Pilyavsky, G.   +15 more
core   +12 more sources

The effects of star spots on transit photometry [PDF]

open access: yesProceedings of the International Astronomical Union, 2010
AbstractWe have undertaken an observational program to photometrically monitor several transiting planet host stars. The Rabus et al. result for TrES-1 showed the dramatic effects star spots can have on transit photometry. We will investigate the effects of spots on transit light curves and estimates of planetary radii.
John R. Hodgson, Damian J. Christian
openaire   +2 more sources

Exoplanet transit photometry for stellar activity and exomoon research

open access: yes, 2021
Photometry underlies important discoveries in observational astronomy, from the detection of stellar magnetic phenomena unveiling dynamic dynamo processes to the much sought-after identification of exomoons. Transit light curves contain a wealth of information on planet-hosting stars and the celestial bodies orbiting them.
Zaleski, Shelley M.
openaire   +3 more sources

Photometry and transit modelling of exoplanet WASP-140b [PDF]

open access: yes, 2022
Accepted by JAAVSO, 12 pages, 5 figures, 2 ...
North, Allen, Banks, Timothy
core   +4 more sources

CHEOPS: A transit photometry mission for ESA's small mission programme [PDF]

open access: yesEPJ Web of Conferences, 2013
Ground based radial velocity (RV) searches continue to discover exoplanets below Neptune mass down to Earth mass. Furthermore, ground based transit searches now reach milli-mag photometric precision and can discover Neptune size planets around bright ...
Queloz D.   +19 more
doaj   +3 more sources

Photometry and transit-timing analysis for eleven transiting exoplanets [PDF]

open access: yes, 2009
This thesis presents time-series photometry of transits of 11 different extrasolar planets. Observations were conducted with the Fred L. Whipple Observatory 1.2m telescope and the Wise Observatory im telescope, in standard optical bandpasses. The number of transits observed for each planet ranges between one and 20 transits, and differential aperture ...
De Kleer, Katherine Rebecca
openaire   +2 more sources

Cerebral blood flow in conscious rats and implications for therapeutic interventions. [PDF]

open access: yesExp Physiol
Abstract Cerebral blood flow (CBF) often becomes compromised in patients suffering from cardiovascular diseases, increasing the risk of neurodegenerative disease and vascular dementia. There is an urgent need for treatments to address cardiovascular risk without compromising brain perfusion, yet the impact of many existing treatments on CBF are not ...
Emans TW   +3 more
europepmc   +2 more sources

Extrasolar planet transit photometry at Wallace Astrophysical Observatory [PDF]

open access: yes, 2008
Extrasolar planet transit photometry is a relatively new astronomical technique developed over the past decade. Transit photometry is the measurement of a star's brightness as an orbiting planet passes in front of the star as seen from the Earth. Recently, members of MIT's Planetary Astronomy Lab (PAL) have launched an observing program for extrasolar ...
Fong, Wen-fai
openaire   +2 more sources

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