A Synthetic Stellar Polarization Atlas from 400 to 1000 nm

Abstract

% context heading (optional) {With the development of new polarimeters for large telescopes, the spectro-polarimetric study of astrophysical bodies is becoming feasible and, indeed, more frequent. In particular, this is permitting the observational study of stellar magnetic fields} % aims heading (mandatory) {With the aim to optimize and interpret this kind of observations, we have produced a spectral atlas of circular polarization in a grid of stellar atmospheric models with effective temperatures between 3500 and 10000 K, surface gravities $\log (g)=3.5-5$, metallicities between 10${}^{-2}$ and 1, and magnetic field strengths of 100, 1000 and 5000~G} % methods heading (mandatory) {We have computed the emergent Stokes $I$ and $V$ flux spectra in LTE of more than 10${}^5$ spectral lines} % results heading (mandatory) {The atlas and several numerical tools are available in electronic format and may be downloaded from http://download.hao.ucar.edu/pub/PSA/. In this paper we review and discuss some of its most relevant features, such as which spectral regions and individual lines harbor the strongest signals, what are interesting lines to observe, how to disentangle field strength from filling factor, etc.}

arXiv commentTo appear in A&A

References in corpus (7)

• Direct magnetic field detection in the innermost regions of an accretion disc
• Discovery of the pre-main sequence progenitors of the magnetic Ap/Bp stars?
• Measurements of magnetic fields over the pulsation cycle in six roAp stars with FORS1 at the VLT
• Magnetic fields in Herbig Ae stars
• Discovery of an Optically Thick, Edge-on Disk around the Herbig Ae star PDS 144N
• Near-infrared imaging polarimetry of dusty young stars
• Model Photospheres for Late-Type Stars from the Inversion of High-Resolution Spectroscopic Observations. Groombridge 1830 and Epsilon Eridani

Cited by in corpus (1)

• Probing photospheric magnetic fields with new spectral line pairs