Zobrazeno 1 - 10
of 38
pro vyhledávání: '"René D. Rohrmann"'
Autor:
René D. Rohrmann, Matías Vera Rueda
The non-relativistic cross section from Rayleigh scattering by hydrogen atoms in the ground state is calculated over a wide range of photon energies ($< 0.8$ keV). Evaluations are performed in terms of the real and imaginary components of the atomic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95f62208125a1e4e418346e38c0768aa
http://arxiv.org/abs/2208.02111
http://arxiv.org/abs/2208.02111
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 492 (2), pp.1579-1593. ⟨10.1093/mnras/stz3438⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 492 (2), pp.1579-1593. ⟨10.1093/mnras/stz3438⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 492 (2), pp.1579-1593. ⟨10.1093/mnras/stz3438⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 492 (2), pp.1579-1593. ⟨10.1093/mnras/stz3438⟩
Binary systems composed of a recycled millisecond pulsar and a stellar companion in close orbit could be excellent sites to diagnose pulsar winds. In such systems, the pulsar outflow irradiates and heats up the companion atmosphere, which can lead to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cda00a940771e786cd2cf38b5d91e56e
https://hal.archives-ouvertes.fr/hal-02458713
https://hal.archives-ouvertes.fr/hal-02458713
Autor:
María E. Camisassa, M. L. Novarino, Leandro Gabriel Althaus, Francisco C. De Gerónimo, Alejandro H. Córsico, René D. Rohrmann, Enrique García-Berro, F. C. Wachlin, M. M. Miller Bertolami
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Ultra-massive white dwarfs are powerful tools to study various physical processes in the Asymptotic Giant Branch (AGB), type Ia supernova explosions and the theory of crystallization through white dwarf asteroseismology. Despite the interest in these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f04386ba92d03b8c338923d017e7b4c
https://www.aanda.org/10.1051/0004-6361/201833822
https://www.aanda.org/10.1051/0004-6361/201833822
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
A selection of 17 stars in the Sloan Digital Sky Survey, previously identified as DC-class white dwarfs (WDs), has been reported to show spectra very close to blackbody radiation in the wavelength range from ultraviolet to infrared. Because of the ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69aff76db55c38c5f3a6733396c70989
https://www.aanda.org/articles/aa/abs/2019/03/aa34032-18/aa34032-18.html
https://www.aanda.org/articles/aa/abs/2019/03/aa34032-18/aa34032-18.html
Autor:
René D. Rohrmann
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Iglesias et al. (2002) showed that the Rayleigh scattering from helium atoms decreases by collective effects in the atmospheres of cool white dwarf stars. Their study is here extended to consider an accurate evaluation of the atomic polarizability an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c83239881fcf2fb5ffd6684d4307396
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 411:781-791
Kowalski & Saumon (2006) identified the missing absorption mechanism in the observed spectra of cool white dwarf stars as the Ly-alpha red wing formed by the collisions between atomic and molecular hydrogen and successfully explained entire spectra o
Autor:
René D. Rohrmann, Andrés Santos
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We use the Percus-Yevick approach in the chemical-potential route to evaluate the equation of state of hard hyperspheres in five dimensions. The evaluation requires the derivation of an analytical expression for the contact value of the pair distribu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4b03558da64e14c82cb0a3713ce000c
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.022303
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.022303
Autor:
Aldo Serenelli, Leandro Gabriel Althaus, Alejandro H. Córsico, René D. Rohrmann, Claudia G. Scóccola
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Aims. The present paper focuses on the evolution of hydrogen-deficient white dwarfs with the aim of exploring the consequences of different initial envelope structures on the carbon abundances expected in helium-rich, carbon-contaminated DQ white dwa
Autor:
René D. Rohrmann, Andrés Santos
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
The coupling-parameter method, whereby an extra particle is progressively coupled to the rest of the particles, is applied to the sticky-hard-sphere fluid to obtain its equation of state in the so-called chemical-potential route ($\mu$ route). As a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8aa78c69469961db645c45fb660596c3
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.89.042121
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.89.042121
Atmospheric models of He-peculiar stars: synthetic He I line profiles and absolute visual magnitudes
Publikováno v:
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Universidad Nacional de La Plata
instacron:UNLP
We analyze the influence of magnetic pressure effects on the atmospheric structure of B peculiar type stars, as well as, on the emergent He I line profiles and absolute visual magnitudes. We consider a photosphere in local thermodynamic and hydrostat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba6cf2801f635ba871a03975fa030594
https://link.springer.com/article/10.1007/s10509-014-1886-y
https://link.springer.com/article/10.1007/s10509-014-1886-y