Results 11 to 20 of about 140,835 (316)

The precision of time registration with Danjon astrolabe [PDF]

open access: yesSerbian Astronomical Journal, 1998
During 1988 at the Munich, Vienna and Graz stations selected stars were observed for the purpose of determining difference in the longitudes. The measurements were performed with Danjon astrolabe by using the method of equal zenith distances. In
Perović G., Cvetković Z.
doaj   +1 more source

Up-down biphasic volume response of human red blood cells to PIEZO1 activation during capillary transits.

open access: yesPLoS Computational Biology, 2021
In this paper we apply a novel JAVA version of a model on the homeostasis of human red blood cells (RBCs) to investigate the changes RBCs experience during single capillary transits.
Simon Rogers, Virgilio L Lew
doaj   +1 more source

The Spitzer search for the transits of HARPS low-mass planets - II. Null results for 19 planets [PDF]

open access: yes, 2017
Short-period super-Earths and Neptunes are now known to be very frequent around solar-type stars. Improving our understanding of these mysterious planets requires the detection of a significant sample of objects suitable for detailed characterization ...
Curto, G. Lo   +11 more
core   +1 more source

A search for transits of GJ 581\lowercase{e} and characterization of the host star variability using MOST space telescope photometry [PDF]

open access: yes, 2012
The GJ 581 system has been amply studied since its discovery in 2005: the number of known planets in the system has increased and their orbital parameters are among the most precisely determined for radial velocity detected exoplanets.
Dragomir, Diana   +9 more
core   +2 more sources

Characterizing the Near-infrared Spectra of Flares from TRAPPIST-1 during JWST Transit Spectroscopy Observations

open access: yesThe Astrophysical Journal, 2023
We present the first analysis of JWST near-infrared spectroscopy of stellar flares from TRAPPIST-1 during transits of rocky exoplanets. Four flares were observed from 0.6–2.8 μ m with the Near Infrared Imager and Slitless Spectrograph and 0.6–3.5 μ m ...
Ward S. Howard   +18 more
doaj   +1 more source

Revised Orbit and Transit Exclusion for HD 114762b [PDF]

open access: yes, 2011
Transiting planets around bright stars have allowed the detailed follow-up and characterization of exoplanets, such as the study of exoplanetary atmospheres.
Dragomir, Diana   +6 more
core   +2 more sources

Shallow Ultraviolet Transits of WD 1145+017 [PDF]

open access: yes, 2019
WD 1145+017 is a unique white dwarf system that has a heavily polluted atmosphere, an infrared excess from a dust disk, numerous broad absorption lines from circumstellar gas, and changing transit features, likely from fragments of an actively ...
Dalba, Paul A.   +18 more
core   +1 more source

Transit Lightcurve Signatures of Artificial Objects [PDF]

open access: yes, 2005
The forthcoming space missions, able to detect Earth-like planets by the transit method, will a fortiori also be able to detect the transit of artificial planet-size objects.
Luc F. A. Arnold, Tarter J.
core   +3 more sources

Efficient analysis in planet transit surveys [PDF]

open access: yes, 2005
With the growing number of projects dedicated to the search for extrasolar planets via transits, there is a need to develop fast, automatic, robust methods with a statistical background in order to efficiently do the analysis.
A. Schwarzenberg-Czerny   +37 more
core   +4 more sources

Exoplanet Nodal Precession Induced by Rapidly Rotating Stars: Impacts on Transit Probabilities and Biases

open access: yesThe Astrophysical Journal, 2023
For the majority of short-period exoplanets transiting massive stars with radiative envelopes, the spin angular momentum of the host star is greater than the planetary orbital angular momentum.
Alexander P. Stephan, B. Scott Gaudi
doaj   +1 more source

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