Hydrogen Line Shape Uncertainties in White Dwarf Model Atmospheres

Montgomery, M. H.; Dunlap, B. H.; Cho, P. B.; Gomez, T. A.

doi:10.3389/fspas.2022.830163

Hydrogen Line Shape Uncertainties in White Dwarf Model Atmospheres

Journal Article · Wed Feb 16 23:00:00 EST 2022 · Frontiers in Astronomy and Space Sciences

DOI:https://doi.org/10.3389/fspas.2022.830163· OSTI ID:1845562

Montgomery, M. H.; Dunlap, B. H.; Cho, P. B.; Gomez, T. A.

For isolated white dwarf (WD) stars, fits to their observed spectra provide the most precise estimates of their effective temperatures and surface gravities. Even so, recent studies have shown that systematic offsets exist between such spectroscopic parameter determinations and those based on broadband photometry. These large discrepancies (10% in T _eff , 0.1 M _⊙ in mass) provide scientific motivation for reconsidering the atomic physics employed in the model atmospheres of these stars. Recent simulation work of ours suggests that the most important remaining uncertainties in simulation-based calculations of line shapes are the treatment of 1) the electric field distribution and 2) the occupation probability (OP) prescription. We review the work that has been done in these areas and outline possible avenues for progress.

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Sponsoring Organization:: USDOE

OSTI ID:: 1845562

Alternate ID(s):: OSTI ID: 1882888

Journal Information:: Frontiers in Astronomy and Space Sciences, Journal Name: Frontiers in Astronomy and Space Sciences Vol. 9; ISSN 2296-987X

Publisher:: Frontiers Media SACopyright Statement

Country of Publication:: Switzerland

Language:: English

References (41)

Über den Starkeffekt dritter Ordnung bei den SerienlinienHβ undHγ des Wasserstoffs Gebauer, R.; v. Traubenberg, H. Rausch Zeitschrift für Physik, Vol. 62, Issue 5-6 https://doi.org/10.1007/BF01336693	journal	May 1930
Über den Starkeffekt II. Ordnung bei der Balmerserie des Wasserstoffs von Traubenberg, H. Rausch; Gebauer, R. Zeitschrift für Physik, Vol. 54, Issue 5-6 https://doi.org/10.1007/BF01375454	journal	May 1929
�ber die Existenzgrenzen von Anregungszust�nden des Wasserstoffatoms in starken elektrischen Feldern Rausch v. Traubenberg, H.; Gebauer, R.; Lewin, G. Die Naturwissenschaften, Vol. 18, Issue 19 https://doi.org/10.1007/BF01501125	journal	May 1930
Fast electric microfield distribution calculations in extreme matter conditions Iglesias, C. A.; Rogers, F. J.; Shepherd, R. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 65, Issue 1-3 https://doi.org/10.1016/S0022-4073(99)00076-X	journal	April 2000
Correlation effects and their influence on line broadening in plasmas: Application to Hα Stambulchik, E.; Fisher, D. V.; Maron, Y. High Energy Density Physics, Vol. 3, Issue 1-2 https://doi.org/10.1016/j.hedp.2007.02.021	journal	May 2007
A study of ion-dynamics and correlation effects for spectral line broadening in plasma: K-shell lines Stambulchik, E.; Maron, Y. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3 https://doi.org/10.1016/j.jqsrt.2005.05.058	journal	May 2006
Quantifying the statistical noise in computer simulations of Stark broadening Rosato, J.; Marandet, Y.; Stamm, R. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 249 https://doi.org/10.1016/j.jqsrt.2020.107002	journal	July 2020
Temperature dependence of the Lyman α line wings in cool hydrogen-rich white dwarf atmospheres. Application to ZZ Ceti white dwarf spectra Allard, N. F.; Kielkopf, J. F.; Loeillet, B. Astronomy & Astrophysics, Vol. 424, Issue 1 https://doi.org/10.1051/0004-6361:20040427	journal	August 2004
Extended VCS Stark broadening tables for hydrogen – Lyman to Brackett series Lemke, M. Astronomy and Astrophysics Supplement Series, Vol. 122, Issue 2 https://doi.org/10.1051/aas:1997134	journal	April 1997
Ionic Depression of Series Limits in Cne-Electron Spectra. Inglis, D. R.; Teller, E. The Astrophysical Journal, Vol. 90 https://doi.org/10.1086/144118	journal	September 1939
Statistical mechanics of partially ionized stellar plasma - The Planck-Larkin partition function, polarization shifts, and simulations of optical spectra Dappen, Werner; Anderson, Lawrence; Mihalas, Dimitri The Astrophysical Journal, Vol. 319 https://doi.org/10.1086/165446	journal	August 1987
The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions Hummer, D. G.; Mihalas, Dimitri The Astrophysical Journal, Vol. 331 https://doi.org/10.1086/166600	journal	August 1988
A spectroscopic determination of the mass distribution of DA white dwarfs Bergeron, P.; Saffer, Rex A.; Liebert, James The Astrophysical Journal, Vol. 394 https://doi.org/10.1086/171575	journal	July 1992
Hydrogen Stark-Broadening Tables Vidal, C. R.; Cooper, J.; Smith, E. W. The Astrophysical Journal Supplement Series, Vol. 25 https://doi.org/10.1086/190264	journal	January 1973
The MHD Equation of State with Post‐Holtsmark Microfield Distributions Nayfonov, Alan; Dappen, Werner; Hummer, David G. The Astrophysical Journal, Vol. 526, Issue 1 https://doi.org/10.1086/307972	journal	November 1999
The Formation Rate and Mass and Luminosity Functions of DA White Dwarfs from the Palomar Green Survey Liebert, James; Bergeron, P.; Holberg, J. B. The Astrophysical Journal Supplement Series, Vol. 156, Issue 1 https://doi.org/10.1086/425738	journal	January 2005
Mapping the ZZ Ceti Instability Strip: Discovery of Six New Pulsators Gianninas, A.; Bergeron, P.; Fontaine, G. The Astronomical Journal, Vol. 132, Issue 2 https://doi.org/10.1086/506516	journal	July 2006
A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4 Eisenstein, Daniel J.; Liebert, James; Harris, Hugh C. The Astrophysical Journal Supplement Series, Vol. 167, Issue 1 https://doi.org/10.1086/507110	journal	November 2006
Spectroscopic Analysis of da White Dwarfs: Stark Broadening of Hydrogen Lines Including Nonideal Effects Tremblay, P. -E.; Bergeron, P. The Astrophysical Journal, Vol. 696, Issue 2 https://doi.org/10.1088/0004-637X/696/2/1755	journal	April 2009
New Insights into the Problem of the Surface Gravity Distribution of cool da White Dwarfs Tremblay, P. -E.; Bergeron, P.; Kalirai, J. S. The Astrophysical Journal, Vol. 712, Issue 2 https://doi.org/10.1088/0004-637X/712/2/1345	journal	March 2010
Study of the effects of ion dynamics on Stark profiles of Balmer-α and -β lines using simulation techniques Gigosos, M. A.; Cardenoso, V. Journal of Physics B: Atomic and Molecular Physics, Vol. 20, Issue 22 https://doi.org/10.1088/0022-3700/20/22/013	journal	November 1987
Atomic data for opacity calculations. XIII. Line profiles for transitions in hydrogenic ions Seaton, M. J. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 23, Issue 19 https://doi.org/10.1088/0953-4075/23/19/012	journal	October 1990
Stark Broadening of Hydrogen Lines in a Plasma Griem, Hans R.; Kolb, Alan C.; Shen, K. Y. Physical Review, Vol. 116, Issue 1 https://doi.org/10.1103/PhysRev.116.4	journal	October 1959
Electric Microfield Distributions in Plasmas Hooper, C. F. Physical Review, Vol. 149, Issue 1 https://doi.org/10.1103/PhysRev.149.77	journal	September 1966
Low-Frequency Component Electric Microfield Distributions in Plasmas Hooper, C. F. Physical Review, Vol. 165, Issue 1 https://doi.org/10.1103/PhysRev.165.215	journal	January 1968
Electric microfield distributions in strongly coupled plasmas Iglesias, Carlos A.; Lebowitz, Joel L.; MacGowan, David Physical Review A, Vol. 28, Issue 3 https://doi.org/10.1103/PhysRevA.28.1667	journal	September 1983
Study of hydrogen Stark profiles by means of computer simulation Stamm, R.; Smith, E. W.; Talin, B. Physical Review A, Vol. 30, Issue 4 https://doi.org/10.1103/PhysRevA.30.2039	journal	October 1984
Detailed Study of the Stark Broadening of Balmer Lines in a High-Density Plasma Wiese, W. L.; Kelleher, D. E.; Paquette, D. R. Physical Review A, Vol. 6, Issue 3 https://doi.org/10.1103/PhysRevA.6.1132	journal	September 1972
Effect of higher-order multipole moments on the Stark line shape Gomez, T. A.; Nagayama, T.; Kilcrease, D. P. Physical Review A, Vol. 94, Issue 2 https://doi.org/10.1103/PhysRevA.94.022501	journal	August 2016
Density-matrix correlations in the relaxation theory of electron broadening Gomez, T. A.; Nagayama, T.; Kilcrease, D. P. Physical Review A, Vol. 98, Issue 1 https://doi.org/10.1103/PhysRevA.98.012505	journal	July 2018
Stark broadening of the B III 2 s − 2 p lines Griem, Hans R.; Ralchenko, Yuri V.; Bray, Igor Physical Review E, Vol. 56, Issue 6 https://doi.org/10.1103/PhysRevE.56.7186	journal	December 1997
Measurements of H β Stark central asymmetry and its analysis through standard theory and computer simulations Djurović, S.; Ćirišan, M.; Demura, A. V. Physical Review E, Vol. 79, Issue 4 https://doi.org/10.1103/PhysRevE.79.046402	journal	April 2009
Classical molecular dynamics simulations of hydrogen plasmas and development of an analytical statistical model for computational validity assessment Gigosos, M. A.; González-Herrero, D.; Lara, N. Physical Review E, Vol. 98, Issue 3 https://doi.org/10.1103/PhysRevE.98.033307	journal	September 2018
Effect of Electron Capture on Spectral Line Broadening in Hot Dense Plasmas Gomez, T. A.; Nagayama, T.; Fontes, C. J. Physical Review Letters, Vol. 124, Issue 5 https://doi.org/10.1103/PhysRevLett.124.055003	journal	February 2020
All-Order Full-Coulomb Quantum Spectral Line-Shape Calculations Gomez, T. A.; Nagayama, T.; Cho, P. B. Physical Review Letters, Vol. 127, Issue 23 https://doi.org/10.1103/PhysRevLett.127.235001	journal	December 2021
Computer simulation technique for plasmas Stamm, Roland; Smith, Earl W. Physical Review A, Vol. 30, Issue 1 https://doi.org/10.1103/physreva.30.450	journal	July 1984
White dwarf mass distribution in the SDSS: White dwarf mass distribution in the SDSS Kepler, S. O.; Kleinman, S. J.; Nitta, A. Monthly Notices of the Royal Astronomical Society, Vol. 375, Issue 4 https://doi.org/10.1111/j.1365-2966.2006.11388.x	journal	February 2007
Effective statistical weights of bound states in plasmas Fisher, D. V.; Maron, Y. The European Physical Journal D - Atomic, Molecular and Optical Physics, Vol. 18, Issue 1 https://doi.org/10.1140/e10053-002-0012-9	journal	January 2002
On the Measurement of Fundamental Parameters of White Dwarfs in the Gaia Era Bergeron, P.; Dufour, P.; Fontaine, G. The Astrophysical Journal, Vol. 876, Issue 1 https://doi.org/10.3847/1538-4357/ab153a	journal	May 2019
A Photometric and Spectroscopic Investigation of the DB White Dwarf Population Using SDSS and Gaia Data Genest-Beaulieu, C.; Bergeron, P. The Astrophysical Journal, Vol. 882, Issue 2 https://doi.org/10.3847/1538-4357/ab379e	journal	September 2019
New Calculations of Stark-broadened Profiles for Neutral Helium Lines Using Computer Simulations Tremblay, Patrick; Beauchamp, A.; Bergeron, P. The Astrophysical Journal, Vol. 901, Issue 2 https://doi.org/10.3847/1538-4357/abb0e5	journal	September 2020

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