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An Updated Wing TiO Sensitive Index for Classification of M-Type Stars
- Source :
- Astrophys Space Sci (2015) 357:1-5
- Publication Year :
- 2015
-
Abstract
- By careful searching of synthetic and observed spectra in a sample of cool giant and supergiant stars, we have updated the continuum band-passes of near-infrared Wing three filter system. This photometric system measures the strength of Titanium Oxide (TiO) absorption in Near-Infrared (NIR) at 719 nm. We show that new reference continuum band-passes are essentially free from molecular absorptions and the updated TiO-index defines the temperature variation in a sample of cool giants with less scatter. A TiO-index vs. effective temperature calibration is derived based on new continuum band-passes.<br />Comment: 7pages,2figures, Published in Astrophysics and Space Science
- Subjects :
- Astrophysics - Solar and Stellar Astrophysics
Subjects
Details
- Database :
- arXiv
- Journal :
- Astrophys Space Sci (2015) 357:1-5
- Publication Type :
- Report
- Accession number :
- edsarx.1505.04332
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1007/s10509-015-2366-8