CHIANTI,

Contact Email: pyoung@cfa.harvard.edu
Institute: Smithsonian Astrophysical Observatory
First Coauthor: The CHIANTI Team
Subject Area: Atomic Data for Astrophysics
Waveband: Multi-wavelength
Technique: Spectroscopy
Presentation: Poster Display
Title: CHIANTI - an atomic database for UV and X-ray cool star spectroscopy
Abstract: The CHIANTI database contains state-of-the-art atomic data suitable for the analysis of UV and X-ray emission line spectra from collisionally ionized plasmas, such as cool star transition regions and coronae. In addition, a set of IDL routines are included to allow the straightforward computation of synthetic spectra and the study of emission line temperature and density diagnostics. All atomic data are assessed before inclusion in the database, and updates to specific ions are made when new data becomes available. The current status of the database will be described in preparation for the release of version 4, which will include proton excitation rates for the first time. CHIANTI has found application in the analysis of spectra from SOHO, HST, EUVE, FUSE, Chandra and XMM, with over 100 references in refereed journals. Many other uses of CHIANTI have been found, including the derivation of the temperature response of the EIT and TRACE solar imaging instruments, the calibration of the SERTS EUV spectrometer and the analysis of UV spectra of the Jupiter-Io plasma torus. Examples will be presented.