Resources for Stellar Atmospheres & Spectra ATLAS Cool stars Hot

Resources for Stellar Atmospheres & Spectra ATLAS Cool stars Hot stars Spectral Libraries 1

ATLAS – Robert Kurucz Available on-line at http://kurucz.cfa.harvard.edu/ A tables of temperature-pressure relations for each model for a range Teff and log gravity B Balmer line profiles for each model F fluxes for each model I intensities for each model; limb darkening for 17 angles Linux source code at http://atmos.obspm.fr/ Good for B through G spectral classes 2

High Resolution Spectra from ATLAS Bertone et al. 2008, A&A, 485, 823 http://www.inaoep.mx/ modelos/bluered/bluered.html http://www.inaoep.mx/ modelos/uvblue/uvblue.html 3

Spectrum Synthesis: Atmosphere Line List to Spectrum Bob Kurucz’ SYNTHE http://kurucz.harvard.edu/programs.html Chris Sneden’s MOOG https://www.as.utexas.edu/ chris/moog.html Jeff Valenti’s Spectroscopy Made Easy http://www.stsci.edu/ valenti/sme.html Richard Gray’s SPECTRUM http://www.appstate.edu/ grayro/spectrum/spectrum.html Ian Czekala’s Starfish https://github.com/iancze/Starfish 4

Links for Atmospheres and Synthetic Spectra David Montes’ wonderful collection: http://webs.ucm.es/info/Astrof/invest/actividad/spectra.html Intensive grid of ATLAS9 models: NEMO Vienna New Model Grid of Stellar Atmospheres http://www.univie.ac.at/nemo/cgi-bin/dive.cgi POLLUX database of theoretical spectra http://pollux.graal.univ-montp2.fr/ 5

Model Cool Stars MARCS - Gustafsson Gustafsson et al. 2008, A&A, 486, 951 Models available at http://marcs.astro.uu.se/ spherically-symmetric models, using up-to-date atomic and molecular data Good for Teff between 2500 and 8000K 6

Model Cool Stars PHOENIX - Hauschildt General spherical code with non-LTE models for many atoms, molecules Used for cool stars, substellar objects (with condensates clouds) http://perso.ens-lyon.fr/france.allard/ and novae, supernovae Web sites at: http://phoenix.astro.physik.uni-goettingen.de/ http://svo2.cab.inta-csic.es/theory/newov/ 7

Model Hot Stars TLUSTY – Lanz & Hubeny Good for hot stars (B- and O-types) Uses non-LTE treatment of many atoms Plane parallel atmospheres, no treatment of stellar winds and mass loss Accretion disk atmospheres Web site at http://nova.astro.umd.edu/index.html 8

Model Hot Stars CMFGEN – John Hillier Radiative transfer code designed to solve the radiative transfer and statistical equilibrium equations in spherical geometry Designed for W-R stars, O stars, and Luminous Blue-Variables Some spectra available at http://pollux.graal.univ-montp2.fr/ Grid soon: Fierro-Santillan et al. 2018, ApJS, 236, 38 Web site at http://kookaburra.phyast.pitt.edu/hillier/web/CMFGEN.htm 9

Model Hot Stars FASTWIND – Jo Puls Spherical, non-LTE, line blanketed code that treats photosphere and wind Good for hot, luminous O-stars Puls et al. 2005, A&A, 435, 669 No grid available yet (Simon Diaz et al. 2011, J. Phys. Conf. Ser., 328, 012021) 10

Model Hot Stars: POWR Potsdam Wolf-Rayet Models – Wolf-Rainer Hamann Designed for extensive mass loss stars, WR and OB types http://www.astro.physik.uni-potsdam.de/ wrh/PoWR/powrgrid1.php 11

Observational Spectral Libraries Excellent lists (UV, optical, IR) available at David Montes’ web site http://webs.ucm.es/info/Astrof/invest/actividad/spectra.html Examples: ELODIE (OHP) library for high dispersion R 42000 of northern sky stars Archive contains nearly 35,000 spectra Web site at http://atlas.obs-hp.fr/elodie/ 12

Observational Spectral Libraries Indo-US library of coude feed stellar spectra Valdes et al. 2004, ApJS, 152, 251 https://www.noao.edu/cflib/ 13

Ultraviolet Spectra IUE archive https://archive.stsci.edu/iue/ HST archive https://archive.stsci.edu/hst/ 10 Lac 14