{"id":10,"date":"2013-03-26T09:29:04","date_gmt":"2013-03-26T09:29:04","guid":{"rendered":"http:\/\/phoenix.astro.physik.uni-goettingen.de\/new\/?page_id=10"},"modified":"2013-08-21T08:16:42","modified_gmt":"2013-08-21T08:16:42","slug":"fits","status":"publish","type":"page","link":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/?page_id=10","title":{"rendered":"Info on spectra"},"content":{"rendered":"
\n

FITS files<\/h2>\n

Please not that the units for mass and luminosity are wrong in the FITS headers, see the correction below!<\/span><\/span><\/p>\n

The FITS files available for download contain the following FITS keywords:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Keyword<\/th>\nDescription<\/th>\n<\/tr>\n
PHXTEFF<\/td>\n[K] effective temperature<\/td>\n<\/tr>\n
PHXLOGG<\/td>\n[cm\/s2 ] log (surface gravity)<\/td>\n<\/tr>\n
PHXM H<\/td>\n[M\/H] metallicity (rel. sol. – Asplund et al 2009)<\/td>\n<\/tr>\n
PHXALPHA<\/td>\n[a\/M] alpha element enhancement<\/td>\n<\/tr>\n
PHXDUST<\/td>\n[T\/F] Dust in atmosphere, always F for this grid<\/td>\n<\/tr>\n
PHXXI L<\/td>\n[km\/s] micro-turbulent velocity for LTE lines<\/td>\n<\/tr>\n
PHXXI M<\/td>\n[km\/s] micro-turbulent velocity for molec lines<\/td>\n<\/tr>\n
PHXXI N<\/td>\n[km\/s] micro-turbulent velocity for NLTE lines<\/td>\n<\/tr>\n
PHXMASS<\/td>\n[g] Stellar mass<\/td>\n<\/tr>\n
PHXREFF<\/td>\n[cm] Effective stellar radius<\/td>\n<\/tr>\n
PHXLUM<\/td>\n[erg\/s] Stellar luminosity<\/td>\n<\/tr>\n
PHXMXLEN<\/td>\nMixing length<\/td>\n<\/tr>\n
PHXBUILD<\/td>\nBuild date of Phoenix<\/td>\n<\/tr>\n
PHXVER<\/td>\nPhoenix version<\/td>\n<\/tr>\n
DATE<\/td>\n[local] finishing date of model calculation<\/td>\n<\/tr>\n
PHXEOS<\/td>\nEquation of state<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The medium-resolution spectra define their wavelength grid by a set of four FITS keywords:<\/p>\n\n\n\n\n\n\n\n
Keyword<\/th>\nDescription<\/th>\n<\/tr>\n
CRVAL1<\/td>\nWavelength of reference pixel<\/td>\n<\/tr>\n
CDELT1<\/td>\nWavelength grid step size<\/td>\n<\/tr>\n
CRPIX1<\/td>\nReference pixel coordinates<\/td>\n<\/tr>\n
CTYPE1<\/td>\nType of wavelength grid<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

The type of the wavelength grid is WAVE\/AWAV for vaccum\/air wavelengths and WAVE-LOG\/AWAV-LOG if the wavelengths are given in logarithmic values.<\/p>\n

Model with disabled convection have an additional keyword PHXCONV with the value F. Furthermore for those spectra that are the result of an interpolation, we added the keyword INTERPOL with the value T.<\/p>\n

For the high-resolution spectra there is also a second FITS extension in the file containing a binary table listing all the element abundances that have been used in the model.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

FITS files Please not that the units for mass and luminosity are wrong in the FITS headers, see the correction below! The FITS files available for download contain the following FITS keywords: Keyword Description PHXTEFF [K] effective temperature PHXLOGG [cm\/s2 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=\/wp\/v2\/pages\/10"}],"collection":[{"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10"}],"version-history":[{"count":6,"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=\/wp\/v2\/pages\/10\/revisions"}],"predecessor-version":[{"id":124,"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=\/wp\/v2\/pages\/10\/revisions\/124"}],"wp:attachment":[{"href":"https:\/\/phoenix.astro.physik.uni-goettingen.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}