| Autor: |
Mourard, Denis, Berio, Philippe, Pannetier, Cyril, Nardetto, Nicolas, Allouche, Fatme, Bailet, Christophe, Dejonghe, Julien, Geneslay, Pierre, Jacqmart, Estelle, Lagarde, Stéphane, Lecron, Daniel, Morand, Frédéric, Rousseau, Sylvain, Salabert, David, Spang, Alain, Albrecht, Simon, Anugu, Narsireddy, Bourges, Laurent, Brummelaar, Theo A. ten, Creevey, Orlagh, Deheuvels, Sebastien, de Souza, Armando Domiciano, Gies, Doug, Ligi, Roxanne, Mella, Guillaume, Perraut, Karine, Schaefer, Gail, Wittkowski, Markus |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
SPIE Optical and Infrared Interferometry and Imaging VIII, p. 1218308 (2022) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1117/12.2628881 |
| Popis: |
With a possible angular resolution down to 0.1-0.2 millisecond of arc using the 330 m baselines and the access to the 600-900 nm spectral domain, the CHARA Array is ideally configured for focusing on precise and accurate fundamental parameters of stars. CHARA/SPICA (Stellar Parameters and Images with a Cophased Array) aims at performing a large survey of stars all over the Hertzsprung-Russell diagram. This survey will also study the effects of the different kinds of variability and surface structure on the reliability of the extracted fundamental parameters. New surface-brightness-colour relations will be extracted from this survey, for general purposes on distance determination and the characterization of faint stars. SPICA is made of a visible 6T fibered instrument and of a near-infrared fringe sensor. In this paper, we detail the science program and the main characteristics of SPICA-VIS. We present finally the initial performance obtained during the commissioning. |
| Databáze: |
arXiv |
| Externí odkaz: |
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