نتایج جستجو برای: astronomical observatory
تعداد نتایج: 21523 فیلتر نتایج به سال:
We present optical WBVR and infrared JHKL photometric observations of the Be binary system δ Sco, obtained in 2000–2005, mid-infrared (10 and 18 μm) photometry and optical (λλ 3200–10500 Å) spectropolarimetry obtained in 2001. Our optical photometry confirms the results of much more frequent visual monitoring of δ Sco. In 2005, we detected a significant decrease in the object’s brightness, both...
Aims. We describe here the main functionalities of the LAEX (Laboratorio de Astrofı́sica Estelar y Exoplanetas /Laboratory for Stellar Astrophysics and Exoplanets) and NASA portals for CoRoT Public Data. The CoRoT archive at LAEX was opened to the community in January 2009 and is managed in the framework of the Spanish Virtual Observatory. NStED (NASA Star and Exoplanet Database) serves as the C...
Astronomy is entering a new era as multiple, large area, digital sky surveys are in production. The resulting datasets are truly remarkable in their own right; however, a revolutionary step arises in the aggregation of complimentary multi-wavelength surveys (i.e., the cross-identification of a billion sources). The federation of these large datasets is already underway, and is producing a major...
A Virtual Observatory (VO) provides enhanced distributed access to online astronomical datasets, and frequently incorporates data processing and visualisation facilities. Almost all critical aspects of datagrid research and technology are encountered when developing a Virtual Observatory. Issues include interoperability of datasets and processing software, metadata format standardisation, an...
The AASTINO (Automated Astrophysical Site Testing INternational Observatory) is a remote laboratory that has been operating at Dome C station on the Antarctic plateau since January 2003. It is designed to run throughout the Antarctic winter without intervention, and to collect data on the astronomical qualities of the site. A Stirling engine and a pair of solar panels power the observatory. Com...
Astronomical Virtual Observatories (VOs) are emerging research environment for astronomy, and 16 countries and a region have funded to develop their VOs based on international standard protocols for interoperability. The 16 funded VO projects have established the International Virtual Observatory Alliance (http://www.ivoa.net/) to develop the standard interoperable interfaces such as registry (...
We present photometric and spectroscopic data for the second microlensing event seen toward the Small Magellanic Cloud (SMC), MACHO-98-SMC-001. The lens is a binary. We resolve the caustic crossing and find that the source took 2∆t = 8.5 hours to transit the caustic. We measure the source temperature Teff = 8000 K both spectroscopically and from the color (V − I)0 ∼ 0.22. We find two acceptable...
By exploiting the far-infrared(FIR) and radio correlation, we have performed the Likelihood-Ratio analysis to identify optical counterparts to the far-infrared sources that have been found in an area of ∼ 0.9 deg2 during the ISO deep far-infrared survey in the Lockman Hole. New ground-based observations have been conducted to build up the catalogs of radio and optical objects, which include a d...
Astronomy is entering a new era as multiple, large area, digital sky surveys are in production. The resulting datasets are truly remarkable in their own right; however, a revolutionary step arises in the aggregation of complimentary multi-wavelength surveys (i.e., the crossidentification of a billion sources) . The federation of these large datasets is already underway, and is producing a major...
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