Near-infrared variant of the Barnes-Evans method for finding Cepheid distances calibrated with high-precision angular diameters

Abstract

view Abstract Citations (55) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Near-Infrared Variants of the Barnes-Evans Method for Finding Cepheid Distances Calibrated With High-Precision Angular Diameters Welch, Douglas L. Abstract The advantages of a near-infrared variant of the Barnes-Evans method for estimating distances to Cepheid variables are described and quantified. A surface brightness-color relation for $K$ photometry and the $(V-K)_0$ color index is established using modern, high-precision angular diameters from optical interferometers. Applied to data for the galactic (cluster) Cepheid U Sgr, this method yields a distance of 0.660 $\pm$ 0.024 kpc and a true distance modulus of 9.10 $\pm$ 0.07 mag. This estimate compares with the true distance modulus of 9.37 $\pm$ 0.22 mag estimated by Gieren, Barnes, and Moffett (1993) using the classical Barnes-Evans technique. The possibility of estimating distances of LMC and SMC Cepheids directly -- without intermediate steps -- is discussed. The feasibility of determining the distance of M31 or M33 using this technique is examined and is probably within the reach of 8m-class telescopes. Publication: The Astronomical Journal Pub Date: October 1994 DOI: 10.1086/117164 arXiv: arXiv:astro-ph/9407088 Bibcode: 1994AJ....108.1421W Keywords: Astrometry; Astronomical Interferometry; Astronomical Photometry; Brightness; Calibrating; Cepheid Variables; Diameters; Distance; Infrared Astronomy; Magellanic Clouds; Near Infrared Radiation; Absorption Spectra; Infrared Photometry; Stellar Color; Astronomy; STARS: DISTANCES; CEPHEIDS; STARS: FUNDAMENTAL PARAMETERS; Astrophysics E-Print: 19 pages + 3 figures, uuencoded compressed postscript, DLW-94-1 full text sources arXiv | ADS | data products SIMBAD (15)