Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Bergh, Sidney van den"'
Autor:
Turner, David G., Bergh, Sidney van den, Younger, Frank, Majaess, Daniel J., Pedreros, Mario H., Berdnikov, Leonid
A photometric UBV survey is presented for 610 stars in a region surrounding the Cepheid AQ Puppis and centered southwest of the variable, based upon photoelectric measures for 14 stars and calibrated iris photometry of photographic plates of the fiel
Externí odkaz:
http://arxiv.org/abs/1210.4172
Autor:
Bergh, Sidney van den
Lenticular galaxies with M_B < -21.5 are almost exclusively unbarred, whereas both barred and unbarred objects occur at fainter luminosity levels. This effect is observed both for objects classified in blue light, and for those that were classified i
Externí odkaz:
http://arxiv.org/abs/1205.6183
Autor:
Bergh, Sidney van den
A study is made of deviations from the mean power-law relationship between the Galactocentric distances and the half-light radii of Galactic globular clusters. Surprisingly, deviations from the mean R_h versus R_gc relationship do not appear to corre
Externí odkaz:
http://arxiv.org/abs/1201.3597
Autor:
Bergh, Sidney van den
Observational cosmology of the first decades of the Twentieth Century was dominated by two giants: Edwin Hubble and Harlow Shapley. Hubble's major contributions were to the study and classification of individual galaxies with large telescopes, wherea
Externí odkaz:
http://arxiv.org/abs/1110.2445
Autor:
Bergh, Sidney van den
The myth that the expansion of the Universe was discovered by Hubble was first propagated by Humason (1931). The true nature of this discovery turns out to have been both more complex and more interesting.
Comment: Submitted to the JRASC. Replac
Comment: Submitted to the JRASC. Replac
Externí odkaz:
http://arxiv.org/abs/1108.0709
Autor:
Bergh, Sidney van den
The global properties of all known Galactic globular clusters are examined. The relationship between the luminosities and the metallicities of Galactic globular clusters is found to be complex. Among luminous clusters there is a correlation in the se
Externí odkaz:
http://arxiv.org/abs/1108.0708
Autor:
Bergh, Sidney van den
The 1927 discovery of the expansion of the Universe by Lemaitre was published in French in a low-impact journal. In the 1931 high-impact English translation of this article a critical equation was changed by omitting reference to what is now known as
Externí odkaz:
http://arxiv.org/abs/1106.1195
Recent studies have shown that massive galaxies in the distant universe are surprisingly compact, with typical sizes about a factor of three smaller than equally massive galaxies in the nearby universe. It has been suggested that these massive galaxi
Externí odkaz:
http://arxiv.org/abs/1105.2063
Autor:
Bergh, Sidney van den
No significant color differences are found between normal and barred spirals over the range of Hubble stages a - ab - b - bc. Furthermore, no significant difference is seen between the luminosity distributions of normal and barred galaxies over the s
Externí odkaz:
http://arxiv.org/abs/1104.0698
Autor:
Bergh, Sidney van den
The Magellanic Clouds may have joined our Milky Way system quite recently. The Large Magellanic Cloud turns out to be a remarkably luminous object that is close to the upper luminosity limit of the class of magellanic irregular galaxies.
Comment
Comment
Externí odkaz:
http://arxiv.org/abs/1012.3492