The second reason for the interest in the globular cluster distance scale is that globular clusters contain stellar populations (RR Lyrae stars, tip of the red giant branch) which are commonly used as distance indicators in astronomy. Thus, globular clusters can serve as nearby calibrators of ...
4.6 Distance Indicators Specific to Elliptical Galaxies 156 4.7 The Colour–Magnitude Relation 161 ...
Full light curves of Miras at wavelengths longer than ∼ 3. 5 μm are rare, and bolometric magnitudes are often derived using bolometric corrections toK, based on colors. Such magnitudes may contain systematic errors but are valuable as distance indicators so long as they are derived cons...
They can be used as distance indicators because they follow a period-luminosity-metallicity (PLZ) relation in the Kpassband. The purpose of this study was the derivation of a new PLZ relation for RR Lyrae stars in the LMC based on the multi-epoch Kphotometry obtained by the VISTA survey ...
Different groups of researchers have arrived at two basically different brightness scales which have been haunting astronomers for years. Related to this are the ``long'' and ``short'' distance scales of the Large Magellanic Cloud (LMC). All the various distance indicators calibrated by HIPPARCOS...
largely due to the tremendous increase in the num- ber of galaxies in which Cepheid variable stars have been discovered. Increasingly accurate secondary distance indicators, many calibrated using Cepheids, now provide largely con- cordant measurements of H0 well out into the Hubble flow, and deviati...
Why are Cepheid variable stars good distance indicators? What about supernovae? Why is the parallax method not useful for measuring the distances of stars more than 100 light-years away?. Explain how observations of star clusters are u...
in galaxies as far away as 25 Mpc, allowing for the first time a calibration of a number of secondary extragalactic distance indicators using Cepheids. Finally, the OGLE microlens- ing experiment turned up thousands of Cepheids in the Large Magellanic Cloud (LMC) that ...
- 《Astronomy & Astrophysics》 被引量: 195发表: 2009年 Planetary nebulae beyond the milky way - Historical overview The availability of multiple independent distance indicators for our closest neighbouring galaxies, the Magellanic Clouds and M 31, means that the luminosities of the PNe in these ...
- 《Astronomy & Astrophysics》 被引量: 212发表: 2008年 Bias properties of extragalactic distance indicators. 3: Analysis of Tully-Fisher distances for the Mathewson-Ford-Buchhorn sample of 1355 galaxies The observational selection bias properties of the large Mathewson-Ford-Buchhorn (MFB) sample ...