Search Results - "HARTMAN, Henrik"

Eta Carinae: The Dissipating Occulter Is an Extended Structure by Gull, Theodore R., Hartman, Henrik, Teodoro, Mairan, Hillier, D. John, Corcoran, Michael F., Damineli, Augusto, Hamaguchi, Kenji, Madura, Thomas, Moffat, Anthony F. J., Morris, Patrick, Nielsen, Krister, Richardson, Noel D., Stevens, Ian R., Weigelt, Gerd

“…Abstract Previous Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph (STIS) longslit observations of Eta Carinae ( η Car) identified numerous…”
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The Long-term Spectral Changes of Eta Carinae: Are they Caused by a Dissipating Occulter as Indicated by cmfgen Models? by Damineli, Augusto, Hillier, Desmond J., Navarete, Felipe, Moffat, Anthony F. J., Weigelt, Gerd, Corcoran, Michael F., Gull, Theodore. R., Richardson, Noel D., Ho, Peter, Madura, Thomas I., Espinoza-Galeas, David, Hartman, Henrik, Morris, Patrick, Pickett, Connor S., Stevens, Ian R., Russell, Christopher M. P., Hamaguchi, Kenji, Jablonski, Francisco J., Teodoro, Mairan, McGee, Padric, Cacella, Paulo, Heathcote, Bernard, Harrison, Ken M., Johnston, Mark, Bohlsen, Terry, Di Scala, Giorgio

“…Abstract Eta Carinae ( η Car) exhibits a unique set of P Cygni profiles with both broad and narrow components. Over many decades, the spectrum has…”
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Validation and Implementation of Uncertainty Estimates of Calculated Transition Rates by Ekman, Jorgen, Godefroid, Michel R, Hartman, Henrik

“…Uncertainties of calculated transition rates in LS-allowed electric dipole transitions in boron-like O IV and carbon-like Fe XXI are estimated using an…”
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Changes in the Na D 1 Absorption Components of η Carinae Provide Clues on the Location of the Dissipating Central Occulter by Pickett, Connor S., Richardson, Noel D., Gull, Theodore R., Hillier, D. John, Hartman, Henrik, Ibrahim, Nour, Lane, Alexis M., Strawn, Emily, Damineli, Augusto, Moffat, Anthony F. J., Navarete, Felipe, Weigelt, Gerd

“…Abstract The Na D absorption doublet in the spectrum of η Carinae is complex, with multiple absorption features associated with the Great Eruption (1840s), the…”
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The CRIRES Search for Planets Around the Lowest-mass Stars. I. High-precision Near-infrared Radial Velocities with an Ammonia Gas Cell by Bean, Jacob L, Seifahrt, Andreas, Hartman, Henrik, Nilsson, Hampus, Wiedemann, Günter, Reiners, Ansgar, Dreizler, Stefan, Henry, Todd J

“…Radial velocities measured from near-infrared (NIR) spectra are a potentially powerful tool to search for planets around cool stars and sub-stellar objects…”
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Probing the circumstellar medium 2.8 Gyr after the big bang: detection of Bowen fluorescence in the Sunburst arc by Vanzella, E, Meneghetti, M, Pastorello, A, Calura, F, Sani, E, Cupani, G, Caminha, G B, Castellano, M, Rosati, P, D’Odorico, V, Cristiani, S, Grillo, C, Mercurio, A, Nonino, M, Brammer, G B, Hartman, H

“…ABSTRACT We discovered Bowen emission arising from a strongly lensed (i.e. with magnification factor μ > 20) source hosted in the Sunburst arc at z = 2.37. We…”
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Changes in the Na D1 Absorption Components of η Carinae Provide Clues on the Location of the Dissipating Central Occulter by Pickett, Connor S., Richardson, Noel D., Gull, Theodore R., Hillier, D. John, Hartman, Henrik, Ibrahim, Nour, Lane, Alexis M., Strawn, Emily, Damineli, Augusto, Moffat, Anthony F. J., Navarete, Felipe, Weigelt, Gerd

“…The Na D absorption doublet in the spectrum of η Carinae is complex, with multiple absorption features associated with the Great Eruption (1840s), the Lesser…”
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Eta Carinae: An Evolving View of the Central Binary, Its Interacting Winds and Its Foreground Ejecta by Gull, Theodore R., Hillier, D. John, Hartman, Henrik, Corcoran, Michael F., Damineli, Augusto, Espinoza-Galeas, David, Hamaguchi, Kenji, Navarete, Felipe, Nielsen, Krister, Madura, Thomas, Moffat, Anthony F. J., Morris, Patrick, Richardson, Noel D., Russell, Christopher M. P., Stevens, Ian R., Weigelt, Gerd

“…FUV spectra of η Car, recorded across two decades with HST/STIS, document multiple changes in resonant lines caused by dissipating extinction in our line of…”
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Evidence against Anomalous Compositions for Giants in the Galactic Nuclear Star Cluster by Thorsbro, B., Ryde, N., Schultheis, M., Hartman, H., Rich, R. M., Lomaeva, M., Origlia, L., Jönsson, H.

“…Very strong Sc i lines have recently been found in cool M giants in the Nuclear Star Cluster (NSC) in the Galactic center. Interpreting these as anomalously…”
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Eta Carinae: A Tale of Two Periastron Passages by Gull, Theodore R., Navarete, Felipe, Corcoran, Michael F., Damineli, Augusto, Espinoza, David, Hamaguchi, Kenji, Hartman, Henrik, Hillier, D. John, Madura, Thomas, Moffat, Anthony F. J., Morris, Patrick, Nielsen, Krister, Pittard, Julian M., Pollock, Andrew M. T., Richardson, Noel D., Russell, Christopher M. P., Stevens, Ian R., Weigelt, Gerd

“…Since 2002, the far-ultraviolet(FUV)flux(1150–1680Å)of Eta Carinae, monitored by the Hubble SpaceTelescope/Space Telescope Imaging Spectrograph, has increased…”
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Lifetime measurements using two-step laser excitation for high-lying even-parity levels and improved theoretical oscillator strengths in Y ii by Palmeri, P., Quinet, P., Lundberg, H., Engström, L., Nilsson, H., Hartman, H.

“…Abstract We report new time-resolved laser-induced fluorescence lifetime measurements for 22 highly excited even-parity levels in singly ionized yttrium…”
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Oscillator strengths for high-excitation Ti ii from laboratory measurements and calculations by Lundberg, H., Hartman, H., Engström, L., Nilsson, H., Persson, A., Palmeri, P., Quinet, P., Fivet, V., Malcheva, G., Blagoev, K.

“…This work reports new experimental radiative lifetimes of six 3d2(3F)5s levels in singly ionized titanium, with an energy around 63 000 cm−1 and four 3d2(3F)4p…”
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Lifetime measurements and oscillator strengths insingly ionized scandium and the solar abundance of scandium by Pehlivan Rhodin, Asli, Belmonte, Teruca, Engström, Lars, Lundberg, Hans, Nilsson, Hampus, Hartman, Henrik, Pickering, Juliet, Clear, Christian, Quinet, Pascal, Fivet, Vanessa, Palmeri, Patrick

“…The lifetimes of 17 even-parity levels (3d5s, 3d4d, 3d6s, and 4p$^2$) in the region 57743-77837 cm$^{-1}$ of singly ionised scandium (\ion{Sc}{ii}) were…”
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Lifetime measurements and oscillator strengths in singly ionized scandium and the solar abundance of scandium by Pehlivan Rhodin, A., Belmonte, M. T., Engström, L., Lundberg, H., Nilsson, H., Hartman, H., Pickering, J. C., Clear, C., Quinet, P., Fivet, V., Palmeri, P.

“…Abstract The lifetimes of 17 even-parity levels (3d5s, 3d4d, 3d6s and 4p2) in the region 57 743–77 837 cm−1 of singly ionized scandium (Sc ii) were measured by…”
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Lifetime measurements and calculations in Y+ and Y2+ ions by Biémont, É., Blagoev, K., Engström, L., Hartman, H., Lundberg, H., Malcheva, G., Nilsson, H., Whitehead, R. Blackwell, Palmeri, P., Quinet, P.

“…We report a new set oftheoretical transition probabilities in Y ii, obtained using a multiconfiguration relativistic Hartree-Fock method including core…”
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Experimental radiative lifetimes for highly excited states and calculated oscillator strengths for lines of astrophysical interest in singly ionized cobalt (Co ii) by Quinet, P., Fivet, V., Palmeri, P., Engström, L., Hartman, H., Lundberg, H., Nilsson, H.

“…This work reports new experimental radiative lifetimes and calculated oscillator strengths for transitions of astrophysical interest in singly ionized cobalt…”
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Coulomb (Velocity) Gauge Recommended in Multiconfiguration Calculations of Transition Data Involving Rydberg Series by Papoulia, Asimina, Ekman, Jörgen, Gaigalas, Gediminas, Godefroid, Michel, Gustafsson, Stefan, Hartman, Henrik, Li, Wenxian, Radžiūtė, Laima, Rynkun, Pavel, Schiffmann, Sacha, Wang, Kai, Jönsson, Per

“…Astronomical spectroscopy has recently expanded into the near-infrared (nIR) wavelength region, raising the demands on atomic transition data. The…”
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Multiconfiguration Dirac-Hartree-Fock Calculations with Spectroscopic Accuracy: Applications to Astrophysics by Jönsson, Per, Gaigalas, Gediminas, Rynkun, Pavel, Radžiūtė, Laima, Ekman, Jörgen, Gustafsson, Stefan, Hartman, Henrik, Wang, Kai, Godefroid, Michel, Froese Fischer, Charlotte, Grant, Ian, Brage, Tomas, Del Zanna, Giulio

“…Atomic data, such as wavelengths, spectroscopic labels, broadening parameters and transition rates, are necessary for many applications, especially in plasma…”
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Radiative lifetimes and transition probabilities in Rh I by Malcheva, G., Engström, L., Lundberg, H., Nilsson, H., Hartman, H., Blagoev, K., Palmeri, P., Quinet, P.

“…Radiative lifetimes of 17 high-lying excited states in Rh I are measured using the time-resolved laser-induced fluorescence method. Out of these lifetimes, 13…”
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Experimental oscillator strengths of Al I lines for near-infrared astrophysical spectroscopy by Burheim, Madeleine, Hartman, Henrik, Nilsson, Hampus

“…Elemental abundances can be determined from stellar spectra, making it possible to study galactic formation and evolution. Accurate atomic data is essential…”
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