The colours of the Sun

Abstract

We compile a sample of Sun-like stars with accurate effective temperatures, metallicities and colours (from the UV to the near-IR). A crucial improvement is that the effective temperature scale of the stars has recently been established as both accurate and precise through direct measurement of angular diameters obtained with stellar interferometers. We fit the colours as a function of effective temperature and metallicity, and derive colour estimates for the Sun in the Johnson/Cousins, Tycho, Stromgren, 2MASS and SDSS photometric systems. For (B-V)_Sun, we favour the ``red'' colour 0.64 versus the ``blue'' colour 0.62 of other recent papers, but both values are consistent within the errors; we ascribe the difference to the selection of Sun-like stars versus interpolation of wider colour-Teff-metallicity relations.

arXiv comment5 pages, 2 figures, accepted by MNRAS

References in corpus (12)

• The u'g'r'i'z' Standard Star Network
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• The effective temperature scale of FGK stars. II. Teff : color : [Fe/H] calibrations
• The angular size of dwarf stars and subgiants - Surface brightness relations calibrated by interferometry
• The local density of matter mapped by Hipparcos
• The local surface density of disc matter mapped by Hipparcos
• The effective temperature scale of FGK stars. I. Determination of temperatures and angular diameters with the infrared flux method
• A Study of the B-V Colour Temperature Relation
• New colour-transformations for the Sloan photometry and revised metallicity calibration and equations for photometric parallax estimation
• The Top Ten solar analogs in the ELODIE library
• Absolute magnitudes for late-type dwarf stars for Sloan photometry
• Keck/HIRES Spectroscopy of Four Candidate Solar Twins

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