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Eta Carinae :
Eta Carinae : An Evolving View of the Central Binary, Its Interacting Winds and Its Foreground Ejecta
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- Gull, Theodore R. (författare)
- NASA, Goddard Space Flight Ctr, Exoplanets Stellar Astrophys Lab, Greenbelt, MD 20771 USA.;Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA.
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- Hillier, D. John (författare)
- Univ Pittsburgh, Dept Phys & Astron & Pittsburgh Particle Phys, Phys Astrophys & Cosmol Ctr PITT PACC, 3941 OHara St, Pittsburgh, PA 15260 USA.
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- Hartman, Henrik (författare)
- Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM)
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- Corcoran, Michael F. (författare)
- NASA, Goddard Space Flight Ctr, CRESST & Xray Astrophys Lab, Greenbelt, MD 20771 USA.;Catholic Univ Amer, 620 Michigan Ave NE, Washington, DC 20064 USA.
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- Damineli, Augusto (författare)
- Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, BR-05508090 Sao Paulo, SP, Brazil.
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- Espinoza-Galeas, David (författare)
- Catholic Univ Amer, 620 Michigan Ave NE, Washington, DC 20064 USA.;Univ Nacl Autonoma Honduras, Fac Ciencias Espaci, Dept Astron Astrofis, Tegucigalpa, Honduras.
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- Hamaguchi, Kenji (författare)
- Univ Maryland Baltimore Cty, Dept Phys, 1000 Hilltop Circle, Baltimore, MD 21250 USA.
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- Navarete, Felipe (författare)
- SOAR Telescope NSFs NOIRLab, Avda Juan Cisternas 1500, La Serena 1700000, Chile.
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- Nielsen, Krister (författare)
- Catholic Univ Amer, 620 Michigan Ave NE, Washington, DC 20064 USA.
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- Madura, Thomas (författare)
- San Jose State Univ, Dept Phys & Astron, 1 Washington Sq, San Jose, CA 95192 USA.
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- Moffat, Anthony F. J. (författare)
- Univ Montreal, Dept Phys, CP 6128, Montreal, PQ H3C 3J7, Canada.;Ctr Rech Astrophys Quebec, Quebec City, PQ, Canada.
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- Morris, Patrick (författare)
- CALTECH, IPAC, M-C 100-22, Pasadena, CA 91125 USA.
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- Richardson, Noel D. (författare)
- Embry Riddle Aeronaut Univ, Dept Phys Astron, 3700 Willow Creek Rd, Prescott, AZ 86301 USA.
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- Russell, Christopher M. P. (författare)
- Univ Delaware, Bartol Res Inst, Dept Phys & Astron, Newark, DE 19716 USA.
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- Stevens, Ian R. (författare)
- Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
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- Weigelt, Gerd (författare)
- Max Planck Inst Radio Astron, Auf Hugel 69, D-53121 Bonn, Germany.
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NASA, Goddard Space Flight Ctr, Exoplanets Stellar Astrophys Lab, Greenbelt, MD 20771 USA;Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA. Univ Pittsburgh, Dept Phys & Astron & Pittsburgh Particle Phys, Phys Astrophys & Cosmol Ctr PITT PACC, 3941 OHara St, Pittsburgh, PA 15260 USA. (creator_code:org_t)
- 2022-07-13
- 2022
- Engelska.
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Ingår i: Astrophysical Journal. - : IOP Publishing Ltd. - 0004-637X .- 1538-4357. ; 933:2, s. 1-28
- Relaterad länk:
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https://doi.org/10.3...
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https://mau.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- FUV spectra of eta Car, recorded across two decades with HST/STIS, document multiple changes in resonant lines caused by dissipating extinction in our line of sight. The FUV flux has increased nearly tenfold, which has led to increased ionization of the multiple shells within the Homunculus and photodestruction of H-2. Comparison of observed resonant line profiles with CMFGEN model profiles allows separation of wind-wind collision and shell absorptions from the primary wind P Cygni profiles. The dissipating occulter preferentially obscured the central binary and interacting winds relative to the very extended primary wind. We are now able to monitor changes in the colliding winds with orbital phase. High-velocity transient absorptions occurred across the most recent periastron passage, indicating acceleration of the primary wind by the secondary wind, which leads to a downstream, high-velocity bow shock that is newly generated every orbital period. There is no evidence of changes in the properties of the binary winds.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Gull, Theodore R ...
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Hillier, D. John
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Hartman, Henrik
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Corcoran, Michae ...
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Damineli, August ...
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Espinoza-Galeas, ...
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visa fler...
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Hamaguchi, Kenji
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Navarete, Felipe
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Nielsen, Krister
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Madura, Thomas
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Moffat, Anthony ...
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Morris, Patrick
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Richardson, Noel ...
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Russell, Christo ...
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Stevens, Ian R.
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Weigelt, Gerd
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