Results 41 to 50 of about 16,023 (53)

Spectroscopic and Photometric Confirmation of 3 Globular and 14 Intermediate-age Clusters in the Irr II Galaxy NGC 3077

The Astronomical Journal
We present the results from spectroscopic and photometric analysis of 17 globular cluster (GC) candidates in the Irr II galaxy NGC 3077. The GC candidates were selected on the Hubble Space Telescope images and were cleaned of foreground Galatic stars ...
P. A. Ovando, Y. D. Mayya, L. H. Rodríguez-Merino, L. Lomelí-Nuñez, B. Cuevas-Otahola, D. Rosa-González, L. Carrasco   +6 more
doaj   +1 more source

Wind Shear and the Role of Eddy Vapor Transport in Driving Water Convection on Jupiter

The Planetary Science Journal
Recent observations of convection in the Jovian atmosphere have demonstrated that convection is strongly concentrated at specific locations on the planet.
Ramanakumar Sankar, Michael H. Wong, Csaba Palotai, Shawn Brueshaber   +3 more
doaj   +1 more source

DETERMINATION OF PROPER MOTIONS OF CIRCUMPOLAR STARS BY USING IMAGES FROM UKRVO PLATE ARCHIVES

Odessa Astronomical Publications, 2016
UkrVO plate archives contain information obtained at different time periods and in different observatories for the same regions of the sky [3, 5, 6, 7, 8].
Yu. Protsyuk, V. Andruk, A. Mazhaev, O. Kovylianska, S. Protsyuk, V. Golovnya   +5 more
doaj   +1 more source

Vintage NPOI: New and Updated Angular Diameters for 145 Stars

The Astronomical Journal
We present new or updated angular diameters, physical radii, and effective temperatures for 145 stars from the Navy Precision Optical Interferometer (NPOI) data archive.
Ellyn K. Baines, James H. Clark III, Bradley I. Kingsley, Henrique R. Schmitt, Jordan M. Stone   +4 more
doaj   +1 more source

ON THE E/P-COSMIC RAYS AS MEDIATORS OF VISCOUS FORCES THAT CREATE SHOCK AND VORTEX STRUCTURES IN THE RADIO GALAXIES

Odessa Astronomical Publications, 2016
There are for the galaxies of FRII type (like Cygnus A) studied a number of hydrodynamic and kinetic processes to transport of magnetized plasma with cosmic rays, and a stratification process of RG-lobe because of e\p-cosmic rays.
N. O. Tsvyk
doaj   +1 more source

Dazzle: Oversampled Image Reconstruction and Difference-imaging Photometry for the Nancy Grace Roman Space Telescope

The Astronomical Journal
We present algorithms and software for constructing high-precision difference images to detect and measure transients, such as microlensing events, in crowded stellar fields using the Nancy Grace Roman Space Telescope.
Michael D. Albrow
doaj   +1 more source

USING OF UKRVO DATA AND SOFTWARE FOR NEW REDUCTIONS OF PHOTOGRAPHIC OBSERVATIONS OF SELECTED MINOR PLANETS

Odessa Astronomical Publications, 2016
The new reductions of available photographic plates of UkrVO digital archive containing images of selected minor planets were conducted. Data processing of these plates were carried out to check the possibility of obtaining the new positions with high ...
Yu. Protsyuk, N. Maigurova, S. Prorsyuk, V. Golovnia   +3 more
doaj   +1 more source

THE OBSERVATIONS OF ARTIFICIAL SATELLITES AND SPACE DEBRIS USING KT-50 TELESCOPE IN THE ODESSA UNIVERSITY

Odessa Astronomical Publications, 2016
In paper the equipment, images analysis techniques in the frame and the method of the satellite brightness estimation in the standard photometric system are describes.
L. Shakun, E. Korobeynikova, N. Koshkin, S. Melikyants, S. Strakhova, S. Terpan, N. Burlak, T. Golubovskaya, V. Dragomiretsky, A. Ryabov   +9 more
doaj   +1 more source

Element abundances in stars: connection with chemical evolution of a Galaxy

Odessa Astronomical Publications, 2017
Abundaces of 17 elements in the atmospheres of 100 stars belonging to different population of the Galaxy were determined. The comparing of the obtained results with the predictions of current chemical evolution models was made.
T. V. Mishenina
doaj   +1 more source

EVOLUTION EFFECTS FOR QUASARS AND GALAXIES WITH JET STRUCTURE

Odessa Astronomical Publications, 2017
We determine the key physical characteristics of quasars and galaxies with jet structure from the observed data. The analysis of relationship of radio and optical luminosities versus the redshift for these objects is carried out. We estimate the lifetime
A. P. Miroshnichenko
doaj   +1 more source