Zobrazeno 1 - 10
of 314
pro vyhledávání: '"Hubeny, Ivan"'
Autor:
Mészáros, Szabolcs, Bohlin, Ralph, Prieto, Carlos Allende, Cseh, Borbála, Kovács, József, Fleming, Scott W., Dencs, Zoltán, Deustua, Susana, Gordon, Karl D., Hubeny, Ivan, Mező, György, Truszek, Márton
Context. The modeling of stellar spectra of flux standards observed by the Hubble and James Webb space telescopes requires a large synthetic spectral library that covers a wide atmospheric parameter range. Aims. The aim of this paper is to present an
Externí odkaz:
http://arxiv.org/abs/2407.10872
Autor:
Hubeny, Ivan, Heap, Sara R.
We present a set of isochrone-tailored spectral libraries for analyzing composite spectra of low-metallicity massive star clusters or starburst galaxies. Specifically, we have computed non-LTE spectra for stars of all initial masses for isochrones at
Externí odkaz:
http://arxiv.org/abs/2309.01024
Autor:
Axelrod, Tim, Saha, Abhijit, Matheson, Thomas, Olszewski, Edward W., Bohlin, Ralph C., Calamida, Annalisa, Claver, Jenna, Deustua, Susana, Holberg, Jay B., Hubeny, Ivan, Mackenty, John W., Malanchev, Konstantin, Narayan, Gautham, Points, Sean, Rest, Armin, Sabbi, Elena, Stubbs, Christopher W.
Hot DA white dwarfs have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are fully characterized by their effective temperature Teff, and surface gravity log g, which can be deduced from t
Externí odkaz:
http://arxiv.org/abs/2305.07563
In this work we present a grid of LTE and non-LTE synthetic spectra of hot DA white dwarfs (WDs). In addition to its usefulness for the determination of fundamental stellar parameters of isolated WDs and in binaries, this grid will be of interest for
Externí odkaz:
http://hdl.handle.net/10150/624926
http://arizona.openrepository.com/arizona/handle/10150/624926
http://arizona.openrepository.com/arizona/handle/10150/624926
Autor:
Hubeny, Ivan
We present an outline of basic assumptions and governing structural equations describing atmospheres of sub-stellar mass objects, in particular the extrasolar giant planets and brown dwarfs. Although most of the presentation of the physical and numer
Externí odkaz:
http://hdl.handle.net/10150/624422
http://arizona.openrepository.com/arizona/handle/10150/624422
http://arizona.openrepository.com/arizona/handle/10150/624422
Autor:
Godon, Patrick, Sion, Edward M., Gänsicke, Boris T., Hubeny, Ivan, de Martino, Domitilla, Pala, Anna F., Rodríguez-Gil, Pablo, Szkody, Paula, Toloza, Odette
We present a spectral analysis of the spectrum from the Hubble Space Telescope Cosmic Origins Spectrograph (HST/COS) of the southern VY Scl nova-like variable BB Doradus, obtained as part of a Cycle 20 HST/COS survey of accreting white dwarfs (WDs) i
Externí odkaz:
http://hdl.handle.net/10150/622674
http://arizona.openrepository.com/arizona/handle/10150/622674
http://arizona.openrepository.com/arizona/handle/10150/622674
An accurate tabulation of stellar brightness in physical units is essential for a multitude of scientific endeavors. The HST/CALSPEC database of flux standards contains many stars with spectral coverage in the 0.115--1 \micron\ range with some extens
Externí odkaz:
http://arxiv.org/abs/2205.08322
Publikováno v:
A&A, 660, A72 (2022)
WD 1145+017 is the first white dwarf known to be orbited by disintegrating exoasteroids. It is a DBZ-type white dwarf with strongly variable broad circumstellar lines and variable shallow UV transits. Various models of the dust clouds and gaseous rin
Externí odkaz:
http://arxiv.org/abs/2203.07520
We present a brief description of the newly upgraded versions of the programs TLUSTY, version 208, and SYNSPEC, version 54. TLUSTY is used to generate model stellar atmospheres or accretion disks, and SYNSPEC produces detailed synthetic spectra and/o
Externí odkaz:
http://arxiv.org/abs/2104.02829
Autor:
Hubeny, Ivan, Long, Knox S.
The spectra arising from the disks of nova-like variables show many of the features seen in stellar atmospheres. They are typically modelled either from an appropriated weighted set of stellar atmospheres or a disk atmosphere with energy is dissipate
Externí odkaz:
http://arxiv.org/abs/2103.09341