Titlebook: Dynamics and Interactions of Galaxies; Proceedings of the I Roland Wielen Conference proceedings 1990 Springer-Verlag Berlin Heidelberg 199

袋鼠

Pentti Hakkila,Gerald C. Monela of galaxies at redshifts near 0.4 contained a much larger population of “blue” galaxies than expected. This suggested rapid color evolution of galaxies in 1/3 of a Hubble time. In order to put this on a more quantitative level, Butcher and Oemler (1984a) undertook a photometric study of 33 clusters

Ingrained

HOWL

一美元

沉思的魚

Eustáquio J. Reis,Fernando A. Blanco they are now perceived as some of the dominant processes governing galaxy formation and evolution. I shall first briefly review the early history of the subject and our recent progress in understanding the six main types of galactic collisions. Then I shall focus on three issues: (1) the fascinatin

Ingrained

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鎮(zhèn)痛劑

Mystic

Waves and Imaging through Complex Mediaassume that NGC 1023A has experienced a tidal interaction with NGC 1023. The model explains some of the pecularities of NGC 1023A, but is probably unable to account for all of the HI mass about NGC 1023.

斑駁

Statistical Approach to Photon Localizationometer and a two-dimensional photon counting system (the CIGALE equipment). Some 3200 velocity points cover the whole galaxy and its companion with a spatial resolution of 1″5 and a velocity accuracy better than 19 km s.. The redshifts are found to be 4095 km s. ± 10 km s. for NGC 2535 and 4085 km s