Commission 33. (Stellar Statistics.)
نویسندگان
چکیده
منابع مشابه
Young massive stellar populations in M 33
In this paper we estimate the ratio OB stars to red supergiants (OB/R) as a function of the distance from the centre of M 33. We found a gradient of the ratio (OB/R) really exists. Our study is based on a new approach in estimating the errors on the ratio (OB/R). On the other hand, by applying a new correlation technique between OB star candidates and red supergiant candidates in the central re...
متن کاملThe stellar halo and outer disk of M 33
We present first results from a Keck/DEIMOS spectroscopic survey of red giant branch (RGB) stars in M33. The radial velocity distributions of the stars in our fields are well described by three Gaussian components, corresponding to a candidate halo component with an uncorrected radial velocity dispersion of σ ≃ 50 km s, a candidate disk component with a dispersion σ ≃ 16 km s, and a third compo...
متن کامل3 Correlation between stellar populations in M 33
A method for identification of stellar complexes in M 33 is applied. Several OB associations form a stellar complex with mean size of 0.3-1 kpc. We apply a correlation technique to compare different stellar populations in M 33. Our results confirm the existence of a strong correlation between OB stars, H II regions and WR stars, which trace the regions of massive star formation. There is a good...
متن کاملWP. 33 ENGLISH ONLY UNITED NATIONS STATISTICAL COMMISSION and ECONOMIC COMMISSION FOR EUROPE CONFERENCE OF EUROPEAN STATISTICIANS EUROPEAN COMMISSION STATISTICAL OFFICE OF THE EUROPEAN COMMUNITIES (EUROSTAT)
In order to manage the disclosure risk in frequency tables containing population counts, the tables undergo statistical disclosure control (SDC) methods. This results in information loss. We examine quantitative information loss measures for frequency tables and compare them across different SDC methods. We show examples of the information loss measures on real UK 2001 Census tables after they ...
متن کاملPower law statistics and stellar rotational velocities in the Pleiades
In this paper we will show that, the non-Gaussian statistics framework based on the Kaniadakis statistics is more appropriate to fit the observed distributions of projected rotational velocity measurements of stars in the Pleiades open cluster. To this end, we compare the results from the κ and q-distributions with the Maxwellian. Copyright c © EPLA, 2008 Introduction. – Some restrictions to th...
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ژورنال
عنوان ژورنال: Transactions of the International Astronomical Union
سال: 1933
ISSN: 0251-107X
DOI: 10.1017/s0251107x00016874