First Polarimetric Measurements and Modeling of the Paschen-Back Effect in CaH Transitions
Informazioni aggiuntive
Autori
Tipo
Articolo pubblicato in rivista scientifica
Anno
2006
Lingua
Inglese
Abstract
We report the first spectropolarimetric observations and modeling of CaH transitions in sunspots. We have detected strong polarization signals in many CaH lines from the A-X system, and we provide the first successful fit to the observed Stokes profiles using the previously developed theory of the Paschen-Back effect in arbitrary electronic states of diatomic molecules and polarized radiative transfer in molecular lines in stellar atmospheres. We analyze the CaH Stokes profiles together with quasi-simultaneous observations in TiO bands and conclude that CaH provides a valuable diagnostic of magnetic fields in sunspots, starspots, cool stars, and brown dwarfs
Rivista
Astrophysical Journal, Letters
Volume
649
Pagina inizio
L49
Pagina fine
L52
DOI
Parole chiave
irsol-refereed-scientific-papers
