FATAL
发表于 2025-3-26 21:56:23
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Corral
发表于 2025-3-27 02:16:01
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optic-nerve
发表于 2025-3-27 08:07:21
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
发表于 2025-3-27 10:30:55
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
发表于 2025-3-27 16:32:45
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
发表于 2025-3-27 20:33:49
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挡泥板
发表于 2025-3-28 01:37:34
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 1Ø%. 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
发表于 2025-3-28 04:31:25
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小母马
发表于 2025-3-28 09:45:51
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rheumatology
发表于 2025-3-28 14:20:51
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