A cross-calibration between Tycho-2 photometry and HST spectrophotometry
Astrophysics
2009-11-10 v3
Abstract
I show that Tycho-2 photometry and HST spectrophotometry are accurate and stable enough to obtain a precise cross-calibration by analyzing a well-calibrated sample of 256 stars observed with both Hipparcos and HST. Based on this analysis, I obtain the following photometric zero points in the Vega magnitude system for Tycho-2: 0.020+-0.001 (B_T-V_T), 0.078+-0.009 (B_T), and 0.058+-0.009 (V_T).
Keywords
Cite
@article{arxiv.astro-ph/0504085,
title = {A cross-calibration between Tycho-2 photometry and HST spectrophotometry},
author = {J. Maíz-Apellániz},
journal= {arXiv preprint arXiv:astro-ph/0504085},
year = {2009}
}
Comments
11 pages, 4 figures, to appear in Publications of the Astronomical Society of the Pacific (June 2005 issue)