Red Giant Clump in the Tycho-2 Catalogue

Abstract

The Tycho-2 proper motions and Tycho-2 and 2MASS photometry are used to select 97348 red giant clump (RGC) stars. The interstellar extinction and photometric distance are calculated for each of the stars. The selected stars are shown to form a selection-unbiased sample of RGC stars within about 350 pc of the Sun with the addition of more distant stars. The distribution of the selected stars in space and their motion are consistent with the assumption that the RGC contains Galactic disk stars with various ages and metallicities, including a significant fraction of stars younger than 1 Gyr with masses of more than 2 $M_{\odot }$. These young stars show differences of their statistical characteristics from those of older RGC stars, including differences in the variations of their distribution density with distance from the Galactic plane and in the dispersion of their velocities found using radial velocities and proper motions. The Sun has been found to rise above the Galactic plane by $13\pm 1$ pc. The distribution density of the stars under consideration in space is probably determined by the Local Spiral Arm and the distribution of absorbing matter in the plane of the Gould Belt.

arXiv comment7 figures

References in corpus (15)

• Evolutionary tracks and isochrones for low- and intermediate-mass stars: from 0.15 to 7 M_sun, and from Z=0.0004 to 0.03
• The Radial Velocity Experiment (RAVE): first data release
• Modelling the Galactic Interstellar Extinction Distribution in Three Dimensions
• Star counts in the Galaxy. Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
• Local kinematics of K and M giants from Coravel/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters
• Scaled solar tracks and isochrones in a large region of the Z-Y plane I. From the ZAMS to the TP-AGB end for 0.15 - 2.5 Mo stars
• The RAdial Velocity Experiment (RAVE): Fourth data release
• Population effects on the Red Giant Clump absolute magnitude, and distance determinations to nearby galaxies
• The Radial Velocity Experiment (RAVE): second data release
• Interstellar Extinction Law in the J, H, and Ks Bands toward the Galactic Center
• Population effects on the red giant clump absolute magnitude: The K-band
• A secondary clump of red giant stars: why and where
• Tracing the long bar with red-clump giants
• Fine structure of the red giant clump from HIPPARCOS data, and distance determinations based on its mean magnitude
• The evolution of the V-K colours of single stellar populations

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