Results 11 to 20 of about 84,662 (294)

The study of exoplanets and protoplanetary discs in the Main astronomical observatory of NAS of Ukraine

open access: yesВісник Астрономічної школи, 2016
Long-term spectral and photometric observations of transit and nontransit exoplanet systems are carried out in MAO NAS of Ukraine. On the base of obtained data we study the influence of exoplanets on chromospherical activity of the host stars, model the ...
Yu. Kuznyetsova   +7 more
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 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

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

Transition systems without transitions

open access: yesTheoretical Computer Science, 2005
The concept of Partial 2-Structures (P2Ss) as an abstract form of directed graph with labeled edges was introduced by A. Ehrenfeucht and G. Rozenberg. The problem of embedding P2Ss into set 2-structures is studied in the paper. An alternative (to Ehrenfeucht and Rozenberg's approach) representation of P2Ss that are complete graphs is proposed.
Andrzej M. Borzyszkowski   +1 more
openaire   +3 more sources

TESS Spots a Super-puff: The Remarkably Low Density of TOI-1420b

open access: yesThe Astronomical Journal, 2023
We present the discovery of TOI-1420b, an exceptionally low-density ( ρ = 0.08 ± 0.02 g cm ^−3 ) transiting planet in a P = 6.96 days orbit around a late G-dwarf star.
Stephanie Yoshida   +53 more
doaj   +1 more source

Transit timing, depth, and duration variation in exoplanet TrES-2?

open access: yesEPJ Web of Conferences, 2011
We report on our ongoing search for timing, duration, and depth variations in the exoplanet TrES-2. In Raetz et al. (2009) we already presented ten different transits obtained at the University Observatory Jena.
Vaňko M.   +17 more
doaj   +1 more source

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

Radiation Songs and Transpacific Resonances of US Imperial Transits

open access: yesJournal of Transnational American Studies, 2020
This article listens to Marshallese radiation songs to hear how singers subject to US nuclear colonial practices—including US nuclear testing (1946–1958), extant displacement, and human radiation experimentation—continue to be ignored in official ...
Jessica A. Schwartz
doaj   +1 more source

Transit

open access: yesEuropean Journal of Creative Practices in Cities and Landscapes, 2018
European Journal of Creative Practices in Cities and Landscapes, Vol 1, No 1 (2018): Cosmopolitan ...
openaire   +2 more sources

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