Astronomy and Astrophysics – Astrophysics
Scientific paper
1994-07-27
Astronomy and Astrophysics
Astrophysics
19 pages + 3 figures, uuencoded compressed postscript, DLW-94-1
Scientific paper
10.1086/117164
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.
No associations
LandOfFree
A Near-Infrared Variant of the Barnes-Evans Method For Finding Cepheid Distances Calibrated with High-Precision Angular Diameters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Near-Infrared Variant of the Barnes-Evans Method For Finding Cepheid Distances Calibrated with High-Precision Angular Diameters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Near-Infrared Variant of the Barnes-Evans Method For Finding Cepheid Distances Calibrated with High-Precision Angular Diameters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-467435