Titlebook: Galaxy Distances and Deviations from Universal Expansion; Barry F. Madore,R. Breant Tully Book 1986 D. Reidel Publishing Company, Dordrech

FATAL

Corral

optic-nerve

Distances from HI Observations of Nearby Groups and Clusters,the 21 cm line width (?υ). Using these best known extragalactic distances it is hoped to get an efficient tool for deriving distances to galaxies whose magnitudes and line widths have been measured. In addition the galaxy’s inclination (i) is needed for correcting both quantities, the magnitude for

CAJ

21cm Line Widths and Distances of Spiral Galaxies,IR) vs.log ?v. relation . in the log ?v. vs. M(IR) relation. This means that in addition to the Malmquist effect another bias must be present. A discussion of possible bias sources reveals that, in addition to type differences, the line width ?v. itself has probably influenced the sample. Indeed, a

folliculitis

The Luminosity Index as a Distance Indicator and the Structure of the Virgo Cluster,heir claim that the luminosity index is unsuitable as a distance indicator is shown to be the result of a variety of systematic and accidental errors and to confusion between the Virgo cluster proper (the S-cloud) and adjacent, but unrelated clouds at different distances. Two tests are presented whi

弓箭

擋泥板

Minimizing the Scatter in the Tully-Fisher Relation,eliable information concerning the local form of the velocity-distance relation, it is desirable to obtain relative distances to galaxies that are accurate to 1?%. The present scatter in the Tully-Fisher relation thus needs to be reduced by a factor of 2. In this contribution, we report on the sourc

INCH

小母馬

rheumatology