Results 31 to 40 of about 305,396 (186)
Optical surface photometry of radio galaxies [PDF]
Astronomy and Astrophysics Supplement Series, 2000 Optical imaging observations for 50 radio galaxies are presented. For each object isophotal contours, photometric profiles, structural parameters (position angle, ellipticity, Fourier coefficients), and total magnitudes are given. These observations, obtained in the Cousins R band, complement the data presented in a previous paper and are part of a ...
Govoni, F. +3 more
openaire +2 more sources
Adaptive Optics Photometry and Astrometry of Binary Stars. II. A Multiplicity Survey of B Stars [PDF]
, 2005 We carried out a search for companions to B stars using the adaptive optics system of the Advanced Electro-Optical System 3.6 m telescope. We observed 70 B stars in the I band, finding 16 companions, 10 of which are newly discovered companions.
Lewis C. Roberts Jr. +2 more
semanticscholar +1 more source
Optical and Radio Surface Photometry of NGC 891 [PDF]
Symposium - International Astronomical Union, 1990 A general correlation between the radio and optical continuum surface brightness has been found in the edge-on galaxy NGC 891. This suggests that the relativistic electrons are produced/accelerated in the vicinity of evolved stars or stellar remnants which have a spatial distribution similar to old disk stars.
ALLEN, RJ +3 more
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Optical Photometry of Black-Hole Candidates [PDF]
Symposium - International Astronomical Union, 1996 The orbital light curves of SXTs are discussed. In principle, the orbital inclination can be determined from the ellipsoidal variations, allowing a complete solution for the component masses. Complications in this analysis are described, and the evidence for superhumps in the light curves is reviewed.
openaire +1 more source
Monthly notices of the Royal Astronomical SocietyWe present the deepest J – Ks near-infrared photometry of the globular cluster M5 (NGC 5904) from observations taken with the Gemini South Adaptive Optics Imager in tandem with the Gemini Multi-conjugate adaptive optics System (GeMS) on the 8.1m Gemini-
Tarun Kumar +6 more
semanticscholar +1 more source
LBT Italia: Current Achievements and Future Directions
InstrumentsThe Large Binocular Telescope (LBT) is a world-leading astronomical observatory, where the Italian partnership has played an important role in increasing the telescope’s productivity, both through an optimized observing strategy and through peer-reviewed
Silvia Tosi +5 more
doaj +1 more source
Detection of extrasolar planet WASP-10b by differential photometry using amateur optics
Defense and Security StudiesThis study presents the detection and characterization of the exoplanet WASP-10b using differential photometry performed with amateur astronomical equipment.
Alan Catovic, Dzan Jasarevic
doaj +1 more source
Array Polarimetry and Optical-Differencing Photometry [PDF]
Symposium - International Astronomical Union, 1995 Array detectors have improved the efficiency of optical polarimetry sufficiently for this technique to become part of the standard arsenal of observational facilities. However, we could gain even more: spatially-differentiating photometry can be implemented as an option of array Polarimeters and low-noise, high-frame-rate array detectors will allow ...
openaire +1 more source
MODERNIZATION OF AZT-22 TELESCOPE OF MAIDANAK HIGH-ALTITUDE OBSERVATORY: TESTING RESULTS
Radio Physics and Radio Astronomy, 2014 The AZT-22 telescope, equipped with the ML09000-65 CCD camera, has shown to be capable of obtaining high-quality images of astronomical objects and thus solving a wide range of observational tasks.
A. V. Sergeev +9 more
doaj +1 more source
Energies, 2018 Energy saving in street lighting is garnering more interest and has become a priority in municipal management. Therefore, LED luminaires are gradually becoming prevalent in our cities.
Alfonso Gago-Calderón +3 more
doaj +1 more source