The colours of the Sun
Open Access
- 1 April 2006
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 367 (2), 449-453
- https://doi.org/10.1111/j.1365-2966.2005.09832.x
Abstract
We compile a sample of Sun-like stars with accurate effective temperatures, metallicities and colours (from the ultraviolet to the near-infrared). 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, Strömgren, 2MASS and SDSS photometric systems. For (B-V)⊙, 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.Keywords
This publication has 15 references indexed in Scilit:
- Keck HIRES Spectroscopy of Four Candidate Solar TwinsThe Astronomical Journal, 2005
- Absolute magnitudes for late-type dwarf stars for Sloan photometryAstronomische Nachrichten, 2005
- New Colour Transformations for the Sloan Photometry, and Revised Metallicity Calibration and Equations for Photometric Parallax EstimationPublications of the Astronomical Society of Australia, 2005
- The angular sizes of dwarf stars and subgiantsAstronomy & Astrophysics, 2004
- The local surface density of disc matter mapped byHipparcosMonthly Notices of the Royal Astronomical Society, 2004
- The Geneva-Copenhagen survey of the Solar neighbourhoodAstronomy & Astrophysics, 2004
- The local density of matter mapped by HipparcosMonthly Notices of the Royal Astronomical Society, 2000
- HR 6060: The Closest Ever Solar Twin?The Astrophysical Journal, 1997
- The 0.12-2.5 micron Absolute Flux Distribution of the Sun for Comparison With Solar Analog StarsThe Astronomical Journal, 1996
- Comparing the Sun with other stars along the temperature coordinatePublications of the Astronomical Society of the Pacific, 1995