Intrinsic color indices and luminosity sequences of stars in the 2MASS two-color diagram
V. Straizys, R. Lazauskaite
TL;DR
This paper identifies intrinsic luminosity sequences of stars in the 2MASS J-H vs. H-Ks diagram, providing a detailed catalog of color indices for different spectral classes, aiding stellar classification.
Contribution
It presents the first comprehensive determination of intrinsic sequences and color indices for luminosity classes V and III stars in the 2MASS system.
Findings
Intrinsic sequences for luminosity classes V and III are established.
Color indices for MK spectral classes are tabulated and compared.
Results enhance stellar classification accuracy in the 2MASS system.
Abstract
Intrinsic sequences of luminosity V and III stars in the J-H vs. H-Ks diagram of the 2MASS system are determined using about 1250 unreddened and dereddened stars. Intrinsic color indices for MK spectral classes are tabulated and compared with the results in other JHK systems.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Calibration and Measurement Techniques · Astronomy and Astrophysical Research