Luminosity-Colours relations for thin disc main-sequence stars

Abstract

In this study we present the absolute magnitude calibrations of thin disc main-sequence stars in the optical ($M_V$), and in the near-infrared ($M_J$). Thin disc stars are identified by means of Padova isochrones, and absolute magnitudes for the sample are evaluated via the newly reduced Hipparcos data. The obtained calibrations cover a large range of spectral types: from A0 to M4 in the optical and from A0 to M0 in the near-infrared. Also, we discuss the of effects binary stars and evolved stars on the absolute magnitude calibrations. The usage of these calibrations can be extended to the estimation of galactic model parameters for the thin disc individually, in order to compare these parameters with the corresponding ones estimated by $\chi {{}^2}_{min}$ statistics (which provides galactic model parameters for thin and thick discs, and halo simultaneously) to test any degeneracy between them. The calibrations can also be used in other astrophysical researches where distance plays an important role in that study.

8 pages, including 12 figures and 4 tables, accepted for publication in MNRAS

References in corpus (16)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Validation of the new Hipparcos reduction
• Evolution of asymptotic giant branch stars II. Optical to far-infrared isochrones with improved TP-AGB models
• The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
• Color Transformations for the 2MASS Second Incremental Data Release
• The Geneva-Copenhagen Survey of the Solar neighbourhood II. New uvby calibrations and rediscussion of stellar ages, the G dwarf problem, age-metallicity diagram, and heating mechanisms of the disk
• Starcounts Redivivus. IV. Density Laws Through Photometric Parallaxes
• The Multiplicity of the Hyades and its Implications for Binary Star Formation and Evolution
• Transformations between 2MASS, SDSS and BVRI photometric systems: bridging the near infrared and optical
• New colour-transformations for the Sloan photometry and revised metallicity calibration and equations for photometric parallax estimation
• A different approach for the estimation of Galactic model parameters
• The investigation of ELAIS field by Vega photometry: Absolute - magnitude dependent on the Galactic model parameters
• Absolute magnitudes for late-type dwarf stars for Sloan photometry
• New metallicity calibration down to [Fe/H] = -2.75 dex
• A new absolute magnitude calibration with 2MASS for cataclysmic variables
• Separation of dwarf and giant stars with ROTSE-IIId

Cited by in corpus (13)

• A long-period radio transient active for three decades
• Unveiling the redback nature of the low-mass X-ray binary XSSJ1227.0-4859 through optical observations
• Local stellar kinematics from RAVE data: II. Radial Metallicity Gradient
• Broad-band characteristics of seven new hard X-ray selected cataclysmic variables
• Periodic signals from the Circinus region: two new cataclysmic variables and the ultraluminous X-ray source candidate GC X-1
• Estimation of Galactic Model Parameters and Metalicity Distribution in Intermediate Latitudes with SDSS
• Vertical and radial metallicity gradients in high latitude galactic fields with SDSS
• First identification and absolute magnitudes of the red clump stars in the Solar neighbourhood for WISE
• SDSS Absolute Magnitudes for Thin Disc Stars based on Trigonometric Parallaxes
• Calibration of RAVE distances to a large sample of Hipparcos stars
• Multiwavelength study of RX J2015.6+3711: a magnetic cataclysmic variable with a 2-hr spin period
• Metallicity Calibration and Photometric Parallax Estimation: II. SDSS photometry
• Absolute Magnitude Calibration for Red Giants based on the Colour-Magnitude Diagrams of Galactic Clusters. I- Calibration with V and (B-V)