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Improved Color – Temperature Relations and Bolometric Corrections for Cool Stars
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 1999 |
| Abstract | We present new grids of colors and bolometric corrections for F–K stars having 4000 K ≤ Teff ≤ 6500 K, 0.0 ≤ log g ≤ 4.5 and –3.0 ≤ [Fe/H] ≤ 0.0. A companion paper extends these calculations into the M giant regime (3000 K ≤ Teff ≤ 4000 K). Colors are tabulated for Johnson U–V and B–V; Cousins V–R and V–I; Johnson-Glass V–K, J–K and H–K; and CIT/CTIO V–K, J–K, H–K and CO. We have developed these color-temperature relations by convolving synthetic spectra with the best-determined, photometric filter-transmission-profiles. The synthetic spectra have been computed with the SSG spectral synthesis code using MARCS stellar atmosphere models as input. Both of these codes have been improved substantially, especially at low temperatures, through the incorporation of new opacity data. The resulting synthetic colors have been put onto the observational systems by applying color calibrations derived from models and photometry of field stars which have effective temperatures determined by the infrared-flux method. These color calibrations have zero points which change most of the original synthetic colors by less than 0.02 mag, and the corresponding slopes generally alter the colors by less than 5%. The adopted temperature scale (Bell & Gustafsson 1989) is confirmed by the extraordinary agreement between the predicted and observed angular diameters of these field stars, indicating that the differences between the Current address: Department of Physics & Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://tarkus.pha.jhu.edu/~mlh/pubs/coltemp.ps.gz |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/9911367v1.pdf |
| Alternate Webpage(s) | http://cds.cern.ch/record/408565/files/9911367.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | AngularJS Antimony Sodium Gluconate Arabic numeral 0 Astronomy CIT Program Tumor Identity Cards Calibration Code Cold Temperature Color Diameter (qualifier value) Dietary Iron Entity Name Part Qualifier - adopted Eragrostis Less Than MAG Technology Co. Photometry Stars, Celestial Stellar (payment network) Stellar classification Symbolic Stream Generator Synthetic data WeatherStar slope |
| Content Type | Text |
| Resource Type | Article |
