Results 11 to 20 of about 300 (82)

VISIONS:the VISTA Star Formation Atlas I. Survey overview [PDF]

open access: yes, 2023
VISIONS is an ESO public survey of five nearby (d < 500 pc) star-forming molecular cloud complexes that are canonically associated with the constellations of Chamaeleon, Corona Australis, Lupus, Ophiuchus, and Orion.
Alves, João   +39 more
core   +10 more sources

Energy Spectra of Atmospheric Turbulence for Calculating Cn2 Parameter. I. Maidanak and Suffa Observatories in Uzbekistan

open access: yesAtmosphere, 2021
Knowledge of the turbulence spectra is of interest for describing atmospheric conditions as applied to astronomical observations. This article discusses the deformations of the turbulence spectra with heights in a wide range of scales at the sites of the
Artem Yu. Shikhovtsev   +5 more
doaj   +1 more source

Long-Term Trends of Astroclimatic Parameters above the Terskol Observatory

open access: yesAtmosphere, 2023
Astroclimatic conditions characterize the quality of an astronomical site. The Terskol Observatory was founded over 42 years ago in 1980. The astronomical site (coordinates 43°16′29″ N, 42°30′03″ E) is located about 10 km from Mt.
Lidia A. Bolbasova, Evgeniy A. Kopylov
doaj   +1 more source

Daytime Cloud Detection Method Using the All-Sky Imager over PERMATApintar Observatory

open access: yesUniverse, 2021
In this study, we explored a new method of cloud detection called the Blue-Green (B-G) Color Difference, which is adapted from the widely used Red-Blue (R-B) Color Difference. The objective of this study was to test the effectiveness of these two methods
Mohammad Afiq Dzuan Mohd Azhar   +3 more
doaj   +1 more source

Astroclimatic statistics at the Sayan Solar Observatory

open access: yesSolar-Terrestrial Physics, 2020
The paper analyzes meteorological and optical characteristics of the atmosphere at the Sayan Solar Observatory (SSO) and the future 3 m Large Solar Telescope (LST-3).
Shikhovtsev A.Yu.   +2 more
doaj   +1 more source

Superconducting Receivers for Space, Balloon, and Ground-Based Sub-Terahertz Radio Telescopes [PDF]

open access: yes, 2020
We give a review of both our own original scientific results of the development of superconducting receivers for sub-terahertz astronomy and the main leading concepts of the global instrumentation.
Balega, Yu Yu   +21 more
core   +1 more source

First results of the Kourovka Planet Search: discovery of transiting exoplanet candidates in the first three target fields [PDF]

open access: yes, 2016
We present the first results of our search for transiting exoplanet candidates as part of the Kourovka Planet Search (KPS) project. The primary objective of the project is to search for new hot Jupiters which transit their host stars, mainly in the ...
Balega, Yuri Yu.   +19 more
core   +1 more source

Results of the ROTOR-program. I. The long-term photometric variability of classical T Tauri stars [PDF]

open access: yes, 2006
We present a unique, homogeneous database of photometric measurements for Classical T Tauri stars extending up to 20 years. The database contains more than 21,000 UBVR observations of 72 CTTs. All the data were collected within the framework of the ROTOR-
Bertout   +28 more
core   +4 more sources

Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4 [PDF]

open access: yes, 2019
19 pages, 4 figures, 6 tables; revised manuscript submitted to MNRAS; online-only supplements are in the download archiveWe homogeneously analyse ∼3.2 × 10 5 photometric measurements for ∼1100 transit light curves belonging to 17 exoplanet hosts.
Baluev, R. V.   +36 more
core   +4 more sources

The "Horizon-T" Experiment: Extensive Air Showers Detection [PDF]

open access: yes, 2016
Horizon-T is an innovative detector system constructed to study Extensive Air Showers (EAS) in the energy range above 10^16 eV coming from a wide range of zenith angles (0 - 85 degrees). The system is located at Tien Shan high-altitude Science Station of
Baigarin, K. A.   +11 more
core   +4 more sources

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