CCD VRI photometry of the old open cluster NGC 7142
Photometry of 2194 stars in the field of the open cluster NGC7142 in VRI filters. Photometric diagrams. Using the VRI and JHK photometry from 2MASS to improve the age and the reddening for the cluster assuming the distance 1683 pc from WEBDA database.
Подобные документы
The results of abundance determinations of the solar-type stars HD 1835 and HD 10700. Minimization parameter as a function of iron abundance and microturbulent velocity in the atmosphere of the Sun. Number of lines in the composed atomic line-lists.
статья, добавлен 17.10.2013- 2. Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars
An investigation of the line profile variations (LPV) in spectra of hot stars. The smooth Time Variation Spectra (smTVS) for detection of micro LPV of various nature. Results of using the telescopes of the Caucasus Special Astrophysical Observatory.
статья, добавлен 17.10.2013 The results of CCD photometric study of the intermediate polar FO Aqr based on observations obtained at the Baja Astronomical Observatory and at the Vihorlat Astronomical Observatory. Variability of the spin period of the white dwarf in FO Aqr.
статья, добавлен 17.10.2013Early Years and discoveries of Galileo Galilei: Galileo’s telescope, improved Dutch spyglass, observed mountains on the moon, the Milky Way composed of tiny stars and sunspots. Copernican theory and position of the catholic church. Interesting facts.
презентация, добавлен 21.03.2012Features of the study of Russian ethnoastronomy, in particular, knowledge of the constellations necessary for orientation at night. Analysis of the card index of the Dictionary of Russian folk dialects and the Astronymic card index of the Ural University.
статья, добавлен 21.06.2021Review of proposals to address the problems of missile navigation accuracy rate on long flights. The Lunar parallax method of measuring the direction of movement , using the orientation on the position of the moon and the stars relative to the Earth.
статья, добавлен 29.07.2013Nicolas Claude de Peirsc, the early period. A set of corresponding observations. The tables of Peiresc. Role of the episode of Jupiter’s satellites in the period of Peiresc’s intensive observation. Allegory of the Medici Stars. The first lunar atlas.
статья, добавлен 09.09.2012The inability to identify carriers of the diffuse interstellar bands as one of the biggest problems in astronomy and astrochemistry. Spectroscopic families of diffuse interstellar bands. Differences in chemical composition of the hot and cold stars.
статья, добавлен 17.10.2013Determining the Apparent Secular Acceleration. Deducing errors of The Lunar elements from Observation of eclipses and the Occultation. Apparent place of the Moon and of the Sun. Distance of Centers of the Two Bodies. the Equations of Correction.
курсовая работа, добавлен 19.09.2019