Results 11 to 20 of about 181,754 (235)

The Temperature Scale of Metal-Rich M Giants Based on TiO Bands: Population Synthesis in the Near Infrared [PDF]

, 1998
We have computed a grid of high resolution synthetic spectra for cool stars ...
Alvarez R., B. Barbuy, Barbuy B., Barbuy B., Barnbaum C., Bessell M. S., Bica E., Brett J. M., Erdelyi-Mendes M., Fluks M. A., Guarnieri M. D., Hedgecock L. M., Jorgensen U. G., Milone A., Milone A., Ortolani S., Plez B., R. P. Schiavon, Santos J. F. C., Jr., Schaller G., Spite M.   +20 more
core   +2 more sources

An improved ultraviolet spectral line list for the symbiotic star RR Telescopii

The Astrophysical Journal Supplement Series, 1993
We have remeasured wavelengths and intensities of International Ultraviolet Explorer (IUE) spectra of the symbiotic star, RR Tel. The main work is centered on the long 820 minute exposure high-resolution spectrum obtained on 1983 June 18. The list is intended to serve as a source of improved intensities and wavelengths for the ultraviolet spectrum of ...
G. A. Doschek, W. A. Feibelman
openaire   +1 more source

Molecular line shape parameters for exoplanetary atmospheric applications [PDF]

, 2017
We describe the recent updates to the ExoMol database regarding the molecular spectral line shapes. ExoMol provides comprehensive molecular line lists with a special emphasis on the applications involving characterization of hot atmospheres such as those
Barton, EJ, Tennyson, J, Yurchenko, SN
core   +2 more sources

An Updated Line List for NUV Spectral Synthesis in Evolved Stars: Redetermination of the Beryllium Abundance in the Solar Photosphere [PDF]

The Astrophysical Journal, 2018
Abstract Motivated by the desire to measure beryllium abundances in red giant stars, we have constructed a new line list for synthesizing spectra in the near-ultraviolet. Using the Sun, Arcturus, and Pollux as benchmark stars, we explore potential sources of missing continuous opacity and line absorption.
Joleen K. Carlberg, Katia Cunha, Verne V. Smith, José-Dias do Nascimento   +3 more
openaire   +1 more source

A study on missing lines in the synthetic solar spectrum near the Ca triplet [PDF]

, 2017
Synthetic stellar spectra are extensively used for many different applications in astronomy, from stellar studies (such as in the determination of atmospheric parameters of observed stellar spectra), to extragalactic studies (e.g.
Anstee, Asplund, Bacławski, Barklem, Barklem, Barklem, Barklem, Bell, Bertone, Bertone, Blackwell-Whitehead, Borrero, Civiš, Coelho, Czekala, de Boer, Den Hartog, Derouich, Dimitrijević, Doyle, Dravins, Duquette, Fuhr, Grevesse, Jessica R. Kitamura, Jorissen, Klose, Kroese, Kurucz, Kurucz, Kurucz, Lindegren, Lucimara P. Martins, Margolin, Martins, Martins, Mitchell, Munari, Nave, Paula Coelho, Paxton, Pickering, Raassen, Rubinstein, Rubinstein, Ruffoni, Safronova, Sbordone, Shchukina, Short, Smith, Stalin, Taklif, Wahlgren, Wallace, Ward, Wood   +56 more
core   +2 more sources

A solar spectral line list between 10 and 200 A modified for application to high spectral resolution X-ray astronomy

The Astrophysical Journal Supplement Series, 1984
A spectral line list for the 10-200 A range is developed from existing solar spectra for application to high spectral resolution measurements of astrophysical plasmas. The solar spectral line lists are merged into a single comprehensive list. The effect of the solar emission measure distribution is removed from the line intensities, which results in a ...
G. A. Doschek, R. D. Cowan
openaire   +1 more source

Spectral line list of potential cosmochronological interest deduced from new calculations of radiative transition rates in singly ionized thorium (Th ii)

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACTIn this work, we report a list of 91 strong Th ii spectral lines in the visible wavelength region that could be used as cosmochronometers in future investigations to determine stellar ages from thorium radioactive decay. This list was established on the basis of a pseudo-relativistic Hartree–Fock model including core-polarization corrections ...
K Wang, P Quinet, P Palmeri, M R Godefroid, S Gamrath   +4 more
openaire   +2 more sources

Empirical line lists and absorption cross sections for methane at high temperature [PDF]

, 2015
Hot methane is found in many "cool" sub-stellar astronomical sources including brown dwarfs and exoplanets, as well as in combustion environments on Earth.
Bailey, Jeremy, Bernath, Peter F., Dulick, Michael, Hargreaves, Robert J.   +3 more
core   +3 more sources

Trident: a universal tool for generating synthetic absorption spectra from astrophysical simulations [PDF]

, 2017
Hydrodynamical simulations are increasingly able to accurately model physical systems on stellar, galactic, and cosmological scales, however, the utility of these simulations is often limited by our ability to directly compare them with the datasets ...
Hummels, Cameron, Silvia, Devin, Smith, Britton   +2 more
core   +3 more sources

Random sampling technique for ultra-fast computations of molecular opacities for exoplanet atmospheres

, 2017
Opacities of molecules in exoplanet atmospheres rely on increasingly detailed line-lists for these molecules. The line lists available today contain for many species up to several billions of lines.
Min, Michiel
core   +1 more source