Results 21 to 30 of about 91,119 (345)

Kepler Transit Depths Contaminated by a Phantom Star [PDF]

open access: yes, 2016
We present ground-based observations from the Discovery Channel Telescope (DCT) of three transits of Kepler-445c---a supposed super-Earth exoplanet with properties resembling GJ 1214b---and demonstrate that the transit depth is approximately 50 percent ...
Croll, Bryce   +3 more
core   +2 more sources

Revisiting the Transit Timing and Atmosphere Characterization of the Neptune-mass Planet HAT-P-26 b

open access: yesThe Astronomical Journal, 2023
We present a transit-timing variation (TTV) and planetary atmosphere analysis of the Neptune-mass planet HAT-P-26 b. We present a new set of 13 transit light curves from optical ground-based observations and combine them with light curves from the Wide ...
Napaporn A-thano   +13 more
doaj   +1 more source

Revisiting Trans-Arctic Maritime Navigability in 2011–2016 from the Perspective of Sea Ice Thickness

open access: yesRemote Sensing, 2021
Arctic navigation has become operational in recent decades with the decline in summer sea ice. To assess the navigability of trans-Arctic passages, combined model and satellite sea ice thickness (CMST) data covering both freezing seasons and melting ...
Xiangying Zhou   +5 more
doaj   +1 more source

EXAMINATION OF METRO STATIONS PEDESTRIAN ACCESSIBILITY FOR ALL USING OPEN DATA KIT: A CASE STUDY OF NOIDA CITY IN INDIA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
To make transit rail services more attractive, the preferred public travel mode and serve as the backbone of any metropolitan area, there arises a need to create a sustainable and inclusive urban environment with access to all. This study aims to map the
S. S. Kapoor, T. S. Brar
doaj   +1 more source

High-resolution Satellite Imaging of the 2004 Transit of Venus and Asymmetries in the Cytherean Atmosphere [PDF]

open access: yes, 2011
This paper presents the only space-borne optical-imaging observations of the 2004 June 8 transit of Venus, the first such transit visible from Earth since AD 1882.
Pasachoff, Jay M.   +2 more
core   +2 more sources

Determination of the size, mass, and density of "exomoons" from photometric transit timing variations [PDF]

open access: yes, 2007
Precise photometric measurements of the upcoming space missions allow the size, mass, and density of satellites of exoplanets to be determined. Here we present such an analysis using the photometric transit timing variation ($TTV_p$).
A. Simon   +14 more
core   +2 more sources

Hypersatellite and satellite transitions in cobalt

open access: yesNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2001
An accurate measurement of energy shifts and relative intensities of hypersatellite and satellite transitions in cobalt have been made. The use of radioactive ^(59)Ni, which decays mostly by the nuclear K-electron capture to cobalt and the low-probability processes of ejection of the other K-electron allowed the observation of decays among very pure ...
Vuković, Branko, Ilakovac, Ksenofont
openaire   +1 more source

Characterizing K2 planet discoveries : a super-Earth transiting the bright K dwarf HIP 116454 [PDF]

open access: yes, 2014
We report the first planet discovery from the two-wheeled Kepler (K2) mission: HIP 116454 b. The host star HIP 116454 is a bright (V = 10.1, K = 8.0) K1 dwarf with high proper motion and a parallax-based distance of 55.2 ± 5.4 pc.
Angus, Ruth   +45 more
core   +6 more sources

Time course and pattern of metastasis of cutaneous melanoma differ between men and women. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND: This study identified sex differences in progression of cutaneous melanoma. METHODOLOGY/PRINCIPAL FINDINGS: Of 7,338 patients who were diagnosed as an invasive primary CM without clinically detectable metastases from 1976 to 2008 at the ...
Liljana Mervic
doaj   +1 more source

KÜRESEL KONUM BELİRLEME SİSTEMİ (GPS) ve COĞRAFYA ARAŞTIRMALARINDA KULLANIMI

open access: yesCoğrafi Bilimler Dergisi, 2005
NAVSTAR-GPS has the widest usage and the largest number of users among the satellites for the purpose of determining location, recently. The basis of this system relies on the first satellite system for determining location, Navy Navigation Satellite ...
Cemal SEVİNDİ
doaj   +1 more source

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