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2. Atlas of the wavelength dependence of UV extinction in the galaxy: a presentation

Creator:
Aiello, S., Barsella, B., Chlewicki, G., Mayo Greenberg, J., Patriarchi, P., and Perinotto, M.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
astrophysics, galaxy, and UV extinction
Language:
Czech
Description:
A short description is given of the Atlas of UV extinction which will be published on Astronomy and Astrophysics Suppl. Series. The Atlas presents a collection of 115 extinction curves derived fron low dispersion IUE spectra retrieved from VILSPA Data Bank.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. Dynamical constants for our galaxy

Creator:
Slobodan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
observations, galaxy, and dynamical constants
Language:
Czech
Description:
According to the present author´s results a following system of the galactic dynamical constants is proposed: local escape velocity, u = (520+30) km s^-1, local circular velocity, u = (230+30) km s^-1, local angular velocity of rotation, ω = (25+5) km s^-1 kpc^-1, local circular frequency of planar oscillations, κp = (40+10) km s^-1, local circlar frequency of vertical oscillations, κz = (70120) km^-1 kpc^-1. The value of (9+1), kpc is assumed fpar the galactocentric distance of the Sun. The latter three values yield (0.09±0.03) pc^-3 for the local matter density, a value very close to the density obtained by use of statistical methods. On the basis of the proposed value it is concluded that the dark matter should to present in the form of a large, rerefied, massive, spherical corona.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

4. On the scale of distances of the galaxy

Creator:
Barkhatova, K. A. and Pylskaya, O. P.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
astronomy, galaxy, and scale of distances
Language:
Czech
Description:
The distribution of open clusters in the Galaxy plane has been studied taking advantage of recent data. It is shown that clusters have a tendency to be localized in Galactic longitudes 120°-300° which coincide with the direction of Magellanic Clouds and Magellanic Stream. Two age peculiarities of the spatial distribution of open clusters are given. The dependence of linear diameters in their distance from the Galaxy centre is discussed. A supposition is made about the necessity to correct parameters of the zero-age main sequence for objects of early spectral classes and of interstellar absorption.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Strukturnyje osovennosti rassejanych zvezdnych skoplenij i jich otnošenie k galaktike

Creator:
Ruprecht , J.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
astronomy, galaxy, and open star clusters
Language:
Czech
Description:
Structural peculiarities of most open star clusters have been studied. They could indicate dynamical influences and disruption of clusters. The distribution of the number of disturbed clusters relatively to the total number of clusters seems to suggest some connection with the distribution of the interstellar matter in the sky.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public