Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/161800
Oxygen-rich Mira variables: near-infrared luminosity calibrations
Journal Title
Director/Tutor
Additional contribution
Journal ISSN
Volume Title
Abstract
Hipparcos astrometric and kinematical data of oxygen-rich Mira variables are used to calibrate absolute near-infrared magnitudes (broad-band K and narrow-band photometric measurements at 1.04 x 10^(-6)m) and kinematic parameters. Three distinct classes of stars with different kinematics and scale height have been identified. The two most significant groups present characteristics close to the ones usually assigned to extended/thick disk-halo population and old disk population respectively, and thus they might differ by their metallicity abundance. Two parallel period-luminosity relations are found in K as well as in 104, one for each significant population. The shift between these relations is interpreted as the consequence of the effects of metallicity abundance on the luminosity.
Related resource
Subject (English)
Citation
Citation
ÁLVAREZ, R., et al. Oxygen-rich Mira variables: near-infrared luminosity calibrations. Astronomy & Astrophysics. 1997. Vol. 327, num. 2, pags. 656-661. ISSN 0004-6361. [consulted: 14 of October of 2026]. Available at: https://hdl.handle.net/2445/161800