A Cross-calibration between Tycho-2 photometry and HST spectrophotometry
Apr, 200511 pages
Published in:
- Publ.Astron.Soc.Pac. 117 (2005) 615
e-Print:
- astro-ph/0504085 [astro-ph]
DOI:
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Abstract: (arXiv)
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).- SPACE VEHICLES INSTRUMENTS
- STARS FUNDAMENTAL PARAMETERS
- PHOTOMETRIC TECHNIQUES
- SPECTROSCOPIC TECHNIQUES
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