Deriving stellar properties from photometry: maximizing information content and minimizing biases
| dc.creator | Apellániz, J. Maíz | |
| dc.date | 2005-06-13 | |
| dc.date.accessioned | 2026-07-07T02:17:57Z | |
| dc.date.available | 2026-07-07T02:17:57Z | |
| dc.description | I study the importance of the accurate calibration of photometric systems in order to produce meaningful comparisons between the observed colors + magnitudes and model SEDs. Possible sources of errors are discussed and two examples are analyzed. I show that well-calibrated Tycho-2 photometry is stable and precise enough for such comparisons. On the contrary, the available calibrations for Johnson UBV photometry yield relative large systematic errors, which has prompted me to develop a new, more precise calibration. The advantages of multicolor photometry over the standard single-color + magnitude diagrams for the derivation of physical properties of stars (elimination of degeneracies, inclusion of multiple parameters, avoidance of linearizing approximations, possibility of a more precise treatment of errors) are discussed through the use of CHORIZOS, a code developed specifically for this purpose. | |
| dc.description | 14 pages, 9 figures. To appear in Resolved Stellar Populations, meeting held in Cancún, Mexico, 18-22 April 2005, D. Valls-Gavaud & M. Chávez (eds.) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0506278 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0506278 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9307 | |
| dc.subject | Astrophysics | |
| dc.title | Deriving stellar properties from photometry: maximizing information content and minimizing biases | |
| dc.type | text |