Refereed Publications
 

• Pseudoatom Molecular Dynamics Plasma Microfields. White, J. R., Fontes, C. J., Zammit, M. Z., Gomez, T. A., and Starrett, C. E., High Energy Density Physics, Submitted (2024 Jul)
• Experimental methods to test photoionized plasma models in emission. Cho, P. B., Loisel, G. P., Bailey, J. E., Dunham, G. S., Mayes, D. C., Nagayama, T., and Fontes, C. J., Physics of Plasma, Submitted (2024 Jun)
• Motional Stark Effect in Neutron Star Atmospheres. Gomez, Thomas A., Zammit, Mark C., Bray, Igor, Fontes, Christopher J., White, Jackson R., and Johnson, H. The Astrophysical Journal, Submitted (2024)
• Development of Improved Higher-Order Correction for the NIF Opacity Spectrometer. Hobbs, B. A., Mayes, D. C., Heeter, R. F., Bradley, P. A., Dutra, E. C., Fontes, C. J., Gallardo-Diaz, E., Hohenberger, M., Johns, H. M., Opachich, Y. P., Robey, H. F., Stoupin, S., Wallace, M. S., Webster, L. G., Montgomery, M. H., Perry, T. S., Winget, D. E., High Energy Density Physics/Review of Scientific Instruments, 1 August 2024; 95 (8): 083535
• Hunting for Polluted White Dwarfs and Other Treasures with Gaia XP Spectra and Unsupervised Machine Learning. Kao, Malia, Hawkins, Keith, Rogers, Laura K., Bonsor, Amy, Dunlap, Bart H., Sanders, Jason L., Montgomery, M. H., and Winget, D. E., ApJ, vol. 970, no. 2., 2024.
• Development of spatially and temporally resolved electron density measurements for the assessment of radiation hydrodynamics simulations of laboratory X-ray photoionized plasmas. Jaar, G. S., Swanson, K. J., Mancini, R. C., Astanovitskiy, A. L., and Mayes, D. C., High Energy Density Physics, vol. 51, id. 101095, 2024.
• Impact of penetrating collisions of plasma ions on spectral line shapes. Gomez, Thomas A., Stambulchik, Evgeny, and White, Jackson. Physical Review A, vol. 109, id.052804, 2024.
• A Quantum Mechanical Treatment of Electron Broadening in Strong Magnetic Fields. II. Large Enhancements due to Exchange Interactions. Gomez, Thomas A., Zammit, Mark C., Bray, Igor, Fontes, Christopher J., and White, Jackson R., ApJ, vol. 963, no. 1, id 62, 2024.
• Fluid Mixing during Phase Separation in Crystallizing White Dwarfs. Montgomery, M. H. and Dunlap, B. H., ApJ, vol. 961, no. 2, id. 197, 2024.
• Correction to: Asteroseismological analysis of the polluted ZZ Ceti star G 29 - 38 with TESS. Uzundag, Murat, De Gerónimo, Francisco C., Córsico, Alejandro H., Silvotti, Roberto, Bradley, Paul A., Montgomery, Michael H., Catelan, Márcio, Toloza, Odette, Bell, Keaton J., Kepler, S. O., Althaus, Leandro G., Kleinman, Scot J., Kilic, Mukremin, Mullally, Susan E., Gänsicke, Boris T., Bąkowska, Karolina, Barber, Sam, and Nitta, Atsuko, Monthly Notices of the Royal Astronomical Society, vol 527, no. 2, 2024.
• High-precision room temperature Fe opacity measurements at 1000-2000eV photon energies. Kao, Malia L., Loisel, Guillaume P., Bailey, James E., Lake, Patrick W., Gard, Paul D., Rochau, Gregory A., Burns, George R., Wampler, William R., Huang, Haibo, and Weir, Michael N., High Energy Density Physics, vol. 49, 101064, 2023.
• A Quantum-mechanical Treatment of Electron Broadening in Strong Magnetic Fields. Gomez, Thomas A., Zammit, Mark C., Fontes, Christopher J., and White, Jackson R., ApJ, vol. 951, no. 2, 2023.
• Measuring He I Stark Line Shapes in the Laboratory to Examine Differences in Photometric and Spectroscopic DB White Dwarf Masses. Schaeuble, M.-A., Nagayama, T., Bailey, J. E., Gigosos, M. A., Florido, R., Blouin, S., Gomez, T. A., Dunlap, B., Montgomery, M. H., and Winget, D. E., ApJ, vol. 940, no. 2, 2022.
• Quadratic Zeeman effect in hydrogen at 2–3 MG magnetic fields. Ivanov, V. V., Mancini, R. C., Huerta, N. A., Swanson, K. J., Winget, D. E., Montgomery, M. H., Golovkin, I. E., Hariharan, H. K. and Berbel, Z. S., Physical Review E, vol. 106, no. 4, id 045206, 2022.
• Kepler and TESS Observations of PG 1159-035. Oliveira da Rosa, Gabriela, Kepler, S. O., Córsico, Alejandro H., Costa, J. E. S., Hermes, J. J., Kawaler, S. D., Bell, Keaton J., Montgomery, M. H., Provencal, J. L., Winget, D. E., Handler, G., Dunlap, Bart, Clemens, J. C., and Uzundag, Murat. ApJ, vol. 936, no. 2, 2022. 
• Simulation of Stark Broadened Hydrogen Balmer Line Shapes for DA White Dwarf Synthetic Spectra. Cho, P., Gomez, T. A., Montgomery, M. H., Dunlap, B. H., Fitz Axen, M., Hobbs, B., Hubeny, I., and Winget, D. E., ApJ, vol. 927, no. 1, 2022.
• The Pulsating Helium-atmosphere White Dwarfs. I. New DBVs from the Sloan Digital Sky Survey. Vanderbosch, Z. P., Hermes, J. J., Winget, D. E., Montgomery, M., H., Bell, K. J., Nitta, A., and Kepler, S. O., ApJ, vol. 927, no. 2, 2022.
• Hydrogen Line Shape Uncertainties in White Dwarf Model Atmospheres. Montgomery, M. H., Dunlap, B. H., Cho, P. B., and Gomez, T. A., 
• All-Order Full-Coulomb Quantum Spectral Line-Shape Calculations. Gomez, T. A., Nagayama, T., Cho, P., Zammit, M. C., Fontes, C. J., Kilcrease, D. P., Bray, I., Hubeny, I., Dunlap, B., Montgomery, M. H., and Winget, D. E., Physical Review Letters, vol. 127, no. 23, id. 235001, 2021.
• Observation of ionization trends in a laboratory photoionized plasma experiment at Z. Mayes, D. C., Mancini, R. C., Lockard, T. E., Hall, I. M., Bailey, J. E., Loisel, G. P., Nagayama, T., Rochau, G. A., and Liedahl, D. A., Phys Rev E, vol. 104, no. 3, p. 035202, 2021.
• I Spy Transits and Pulsations: Empirical Variability in White Dwarfs Using Gaia and the Zwicky Transient Facility. Guidry, J. A., Vanderbosch, Z. P., Hermes, J. J., Barlow, B. N., Lopez, I. D., Boudreaux, T. M., Corcoran, K. A., Dunlap, B. H., Bell, K. J., Montgomery, M. H., Heintz, T. M., Winget, D. E., Winget, K. I., and Kuehne, J. W., ApJ, vol. 912, no. 2, id.125, 24 pp., 2021.
• Experimental methods for laboratory measurements of helium spectral line broadening in white dwarf photospheres. Schaeuble, M.-A., Nagayama, T., Bailey, J. E., Dunlap, B. H., and Patel, S., Physics of Plasmas, vol. 28, no. 6, article id.062902, 2021.
• The Pulsating White Dwarf G117-B15A: Still the Most Stable Optical Clock Known. Kepler, S. O., Winget, D. E., Vanderbosch, Z. P., Castanheira, B. G., Hermes, J. J., Bell, K. J., Mullally, F., Romero, A. D., Montgomery, M. H., DeGennaro, S., Winget, K. I., Chandler, D., Jeffery, E. J., Fritzen, J. K., Williams, K. A., Chote, P., and Zola, S., ApJ, vol. 906, no. 1, id. 7, 10 pp., 2021.
• Illuminating White Dwarf Spectra through Laboratory Experiments at Cosmic Conditions. Winget, D. E., Montgomery, M. H., Dunlap, B. H., Cho, P. B., Schaeuble, M.-A., and Gomez, T. A., High Energy Density Physics, vol. 37, id. 100853, 2020.
• WD1032 + 011, an inflated brown dwarf in an old eclipsing binary with a white dwarf. Casewell, S. L., Belardi, C., Parsons, S. G., Littlefair, S. P., Braker, I. P., Hermes, J. J., Debes, J., Vanderbosch, Z., Burleigh, M. R., Gänsicke, B. T., Dhillon, V. S., Marsh, T. R., Winget, D. E., and Winget, K. I., Monthly Notices of the Royal Astronomical Society, vol. 497, no. 3, pp. 3571-3580, 2020.
• A White Dwarf with Transiting Circumstellar Material Far outside the Roche Limit. Vanderbosch, Z., Hermes, J. J., Dennihy, E., Dunlap, B. H., Izquierdo, P., Tremblay, P.-E., Cho, P. B., Gänsicke, B. T., Toloza, O., Bell, K. J., Montgomery, M. H., and Winget, D. E., ApJ, vol. 897, no. 2, id. 171, 2020.
• X-ray heating and electron temperature of laboratory photoionized plasmas. Mancini, R. C., Lockard, T. E., Mayes, D. C., Hall, I. M., Loisel, G. P., Bailey, J. E., Rochau, G. A., Abdallah Jr., J., Golovkin, I. E., and Liedahl, D., Phys Rev E, vol. 101, no. 5, p. 051201, 2020.
• Limits on Mode Coherence in Pulsating DA White Dwarfs Due to a Nonstatic Convection Zone. Montgomery, M. H., Hermes, J. J., Winget, D. E., Dunlap, B. H., and Bell, K. J., ApJ, vol. 890, no. 1, id.11, 10 pp., 2020.
• Hb and Hy Absorption-line Profile Inconsistencies in Laboratory Experiments Performed at White Dwarf Photosphere Conditions. Schaeuble, M.-A., Nagayama, T., Bailey, J. E., Gomez, T. A., Montgomery, M. H., and Winget, D. E., ApJ, vol. 885, no. 1, id. 86, 12 pp., 2019.
• Density-matrix correlations in the relaxation theory of electron broadening. Gomez, T. A., Nagayama, T., Kilcrease, D. P., Montgomery, M. H., and Winget, D. E., 2018, Phys. Rev. A, vol. 98, no. 1, id. 01250, 2018.
• WDEC: A Code for Modeling White Dwarf Structure and Pulsations. Bischoff-Kim, A. and Montgomery, M. H., ApJ, vol. 155, no. 5, id. 187, 8 pp., 2018.
• Matrix Methods for Solving Hartree-Fock Equations in Atomic Structure Calculations and Line Broadening. Gomez, T. A., Nagayama, T., Fontes, C., Kilcrease, D. P., Hansen, S., Montgomery, M. H., and Winget, D. E., Atoms, vol. 6, no. 2, p. 22., 2018.
• Effect of higher-order multipole moments on the Stark line shape. Gomez, T. A., Nagayama, T., Kilcrease, D. P., Montgomery, M. H., and Winget, D. E., Phys. Rev. A, vol. 94, no. 2, id. 022501, 2016.
• Laboratory Measurements of White Dwarf Photospheric Spectral Lines: H-beta. Falcon, R. E., Rochau, G. A., Bailey, J. E., Gomez, T. A., Montgomery, M. H., Winget, D. E., and Nagayama, T., ApJ, vol. 806, no. 2, id. 214, 11 pp., 2015.
• An experimental platform for creating white dwarf photospheres in the laboratory: Preliminary results. Montgomery, M. H., Falcon, R. E., Rochau, G. A., Bailey, J. E., Gomez, T. A., Carlson, A. L., Bliss, D. E., Nagayama, T., Stein, M., and Winget, D. E., High Energy Density Physics, vol. 17, pp.168-174, 2015.
• An experimental platform for creating white dwarf photospheres in the laboratory. Falcon, R. E., Rochau, G. A., Bailey, J. E., Ellis, J. L., Carlson, A. L., Gomez, T. A., Montgomery, M. H., Winget, D. E., Chen, E. Y., Gomez, M. R., and Nash, T. J., High Energy Density Physics, vol. 9, no. 1, pp. 82-90, 2013.
• A Gravitational Redshift Determination of the Mean Mass of White Dwarfs: DBA and DB Stars. Falcon, R. E., Winget, D. E., Montgomery, M. H., and Williams, K. A., ApJ, vol. 757, no. 2, id. 116, 9 pp., 2012.
• A Gravitational Redshift Determination of the Mean Mass of White Dwarfs. DA Stars. Falcon, R. E., Winget, D. E., Montgomery, M. H., and Williams, K. A., ApJ, vol. 712, no. 1, pp. 585-595, 2010.

Conference Proceedings
 

• Z Fundamental Science Workshop, Aug. 2024:

  • Cho, Patricia, “Testing high-density and transient effects in photoionized plasma emission from black hole accretion”
  • Dunlap, Bart, “Atomic processes in white dwarf atmospheres in the laboratory”
  • Jaar, Georges, UNR, “Radiation heating and cooling, and the thermal stability of x-ray photoionized plasmas”
  • Mayes, Dan, “Laboratory tests of stellar interior opacity models”
  • Gomez, Thomas, “How line broadening provides insight into atomic behavior in HED plasmas”
  • Clark, Alisha, “Origin of Earth’s water: Role of hydrous melts at extreme P-T conditions”
• Mapping the distribution of accreted metals on the surface of WD G29-38 with TESS and HST. Montgomery, Michael H., and Barber, Sam D., Poster Presentation, the 8th TESS/15th Kepler Asteroseismic Science Consortium Workshop (2024 July)
• 23rd European Workshop on White Dwarfs, July 2024:
  • Dunlap, Bart, Poster, “The White Dwarf Photosphere Experiment”
  • Montgomery, Mike, “Fluid Mixing During Phase Separation”
• Testing Astrophysical Models of Black Hole Accretion Disk Plasmas Using the Z machine at Sandia National Laboratories. Cho, Patricia, DOE NNSA SSGF LRGF Program Review (2024 Jun)
• Can Neutron Star Masses and Radii be Determined using Spectroscopy? Gomez, Thomas, Zammit, Mark, Bray, Igor, Fontes, Christopher, and White, Jackson. AAS High Energy Astrophysics Division meeting #21, id. 502.05. Bulletin of the American Astronomical Society, vol. 56, no. 5 e-id 2024n5i502p05 (2024 May)
• The challenge of producing laboratory photoionized plasmas in steady state. Mancini, Roberto, Invited, 14th International Conference on High-Energy Density Laboratory Astrophysics, (2024 May)
• Current Challenges in the Physics of White Dwarf Stars, March 2024:
  • Dunlap, Bart, “White Dwarf Spectra in the Lab”
  • Mayes, Dan, “Oxygen opacity experiments for stellar and white dwarf interiors”
  • Montgomery, M. H., “Sources of Opacity in White Dwarf Stars”
• SSAP Symposium, Feb. 2024:
  • Berbel, Zethran; Clark, A.N.; Sarafian, A.R.; Lane, J.M.D.; Davis, J.-P.; McCoy, C.A., Poster Presentation, “Silicate Melts as a Volatile Retention Mechanism in Planetary Creation & Destruction Processes.”
  • Mancini, Roberto, “X-ray heating, temperature and ionization of photoionized plasmas”
• Iron photoionized plasmas at conditions relevant to x-ray reflection from accretion disks. Mancini, Roberto, Invited, NIF and JLF User Group Annual Meeting, Jan.-Feb. 2024.
• The Blue Edge of the Helium Instability Strip. Provencal, Judith, Nitta, Atsuko, Kleinman, Scot, Montgomery, Michael, Hermes, JJ,  Vanderbosch, Zachary, and Shipman, Harry. American Astronomical Society, AAS Meeting #243, id. 367.01. Bulletin of the American Astronomical Society, vol. 56, no. 2 e-id 2024n2i367p01, Feb 2024.
• On the Widths of Spectral Lines in Neutron Star Atmospheres. Gomez, Thomas, Zammit, Mark, Bray, Igor, Fontes, Christopher, and White, Jackson,  American Astronomical Society, AAS Meeting #243, id. 263.04. Bulletin of the American Astronomical Society, Vol. 56, No. 2 e-id 2024n2i263p04, Feb. 2024.
• Laboratory tests of astrophysical black hole accretion disk plasma models using the Z-machine at Sandia National Laboratories. Cho, Patricia, Invited, CfA Harvard High Energy Seminars, Nov. 2023.
• 66th Annual Meeting of the APS Division of Plasma Physics, Oct.-Nov., 2023:
  • Cho, Patricia, Invited, “Laboratory tests of astrophysical black hole accretion disk plasma models using the Z-machine at Sandia National Laboratories”
  • Dunlap, Bart, “Laboratory Generated Heat Fronts Relevant to the Epoch of Reionization”
  • Huegel, Isaac, “Laboratory tests of astrophysical black hole accretion disk plasma models using the Z-machine at Sandia National Laboratories”
  • Jaar, Georges, UNR, “Laboratory Generated Heat Fronts Relevant to the Epoch of Reionization”, and “Characterization of Space and Time Resolved Electron Density in the Photoionized Plasma Gas Cell Experiment at Z”
  • Mancini, Roberto, “Two-element photoionized plasma experiments at OMEGA EP and NIF”
  • Mayes, Dan, “Oxygen opacity experiments for stellar interiors at Z”
• The Wootton Center for Astrophysical Plasma Properties: First results for helium, Montgomery, M. H., Winget, D. E., Schaeuble, M.-A., Dunlap, B. H., and Fuchs, J. T., 2020, Proceeding of the International Astronomical Union, volume 15, Symposium S350: Laboratory Astrophysics: From Observations to Interpretation, April 2019, pp. 231 - 236
• Influence of Projection Operator on Oxygen Line Shapes and its effect on Rosseland-Mean Opacity in Stellar Interiors, Gomez, T., Nagayama, T., Kilcrease, D., Hansen, S., Montgomery, M., and Winget, D., 2018, American Astronomical Society Meeting Abstracts 231, volume 231 of American Astronomical Society Meeting Abstracts, 452.02
• Numerical simulation of DA white dwarf surface convection, Zaussinger, F., Kupka, F., Montgomery, M., and Egbers, C., 2018, Journal of Physics: Conference Series, 1031(1), 012013
• Helium at White Dwarf Photospheric Conditions: Preliminary Laboratory Results, Schaeuble, M., Falcon, R. E., Gomez, T. A., Winget, D. E., Montgomery, M. H., and Bailey, J. E., 2017, In 20th European White Dwarf Workshop, ed. P.-E. Tremblay, B. Gaensicke, & T. Marsh, volume 509 of Astronomical Society of the Pacific Conference Series, 231
• From the Telescope to the Laboratory and Back Again: The Center for Astrophysical Plasma Properties, Montgomery, M. H., Winget, D., Schaeuble, M., Hawkins, K., and Wheeler, C., 2018, In American Astronomical Society Meeting Abstracts 231, volume 231 of American Astronomical Society Meeting Abstracts, 443.01
• A survey of pulsating DA and DB white dwarfs Observations with the Whole Earth Telescope, Provencal, J. L., Montgomery, M., and Shipman, H., 2017, In European Physical Journal Web of Conferences, volume 152 of European Physical Journal Web of Conferences, 01012
• Modeling the Spectra of Dense Hydrogen Plasmas: Beyond Occupation Probability, Gomez, T. A., Montgomery, M. H., Nagayama, T., Kilcrease, D. P., and Winget, D. E., 2017, In 20th European White Dwarf Workshop, ed. P.-E. Tremblay, B. Gaensicke, and T. Marsh, vol. 509 of Astronomical Society of the Pacific Conference Series, 143
• Reaching Higher Densities for Laboratory White Dwarf Photospheres to Measure Spectroscopic Line Profiles, Falcon, R. E., Bailey, J. E., Gomez, T. A., Schaeuble, M., Nagayama, T., Montgomery, M. H., Winget, D. E., and Rochau, G. A., 2017, In 20th European White Dwarf Workshop, ed. P.-E. Tremblay, B. Gaensicke, and T. Marsh, vol. 509 of Astronomical Society of the Pacific Conference Series, 149
• Which Hydrogen Balmer Lines are Most Reliable for Determining White Dwarf Atmospheric Parameters?, Falcon, R. E., Rochau, G. A., Bailey, J. E., Gomez, T. A., Montgomery, M. H., Winget, D. E., and Nagayama, T., 2015, In 19th European Workshop on White Dwarfs, ed. P. Dufour, P. Bergeron, and G. Fontaine, vol. 493 of Astronomical Society of the Pacific Conference Series, 399
• The Z Astrophysical Plasma Properties (ZAPP) Collaboration, Montgomery, M. H., Bailey, J. E., Blancard, C., Carlson, A. L., Cohen, D., Cosse, P., Dunham, G., Durmaz, T., Ellis, J. L., Falcon, R. E., Faussurier, G., Gilleron, F., Golovkin, I., Gomez, M. R., Gomez, T., Hall, I., Hansen, S. B., Iglesias, C. A., Kernaghan, M., Lake, P. W., Liedahl, D., Lockard, T., MacArthur, J., MacFarlane, J. J., Mancini, R. C., Nahar, S. N., Nash, T. J., Nielsen, D. S., Pain, J. C., Pinsonneault, M., Pradhan, A. K., Rochau, G. A., Sherrill, M., and Winget, D. E., 2012, In American Astronomical Society Meeting Abstracts 219, vol. 219 of American Astronomical Society Meeting Abstracts, 238.06
• Developing an Experimental Platform to Create White Dwarf Photospheres in the Laboratory, Falcon, R., Rochau, G. A., Bailey, J. E., Ellis, J. L., Carlson, A. L., Gomez, T., Montgomery, M. H., Winget, D. E., and Gomez, M. R., 2012, In American Astronomical Society Meeting Abstracts 219, volume 219 of American Astronomical Society Meeting Abstracts, 238.07
• Creation of White Dwarf Photospheres in the Laboratory, Ellis, J., Falcon, R. E., Rochau, G. A., Winget, D. E., Bailey, J. E., and Montgomery, M. H., 2011, In American Astronomical Society Meeting Abstracts, volume 217 of American Astronomical Society Meeting Abstracts, 433.24
• Creating White Dwarf Photospheres in the Laboratory, Falcon, R. E., Rochau, G. A., Bailey, J. E., Ellis, J. L., Montgomery, M. H., Winget, D. E., Gomez, M. R., and Leeper, R. J., 2010, AIP Conference Proceedings, 1273(1), 436
• A Gravitational Redshift Determination of the Mean Mass of DBA White Dwarfs, Falcon, R. E., Winget, D. E., Montgomery, M. H., and Williams, K. A., 2010, AIP Conference Proceedings, 1273(1), 13