WFRF:(Drevon C. A.)
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 10238naa a2201057 4500 | |
| 001 | oai:DiVA.org:uu-470462 | |
| 003 | SwePub | |
| 008 | 220328s2022 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4704622 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2021425142 DOI |
| 040 | a (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Chiavassa, A.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.;European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany.;Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching, Germany.4 aut |
| 245 | 1 0 | a The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE star |
| 264 | c 2022-02-21 | |
| 264 | 1 | b EDP Sciences,c 2022 |
| 338 | a electronic2 rdacarrier | |
| 520 | a Context. VX Sgr is a cool, evolved, and luminous red star whose stellar parameters are difficult to determine, which affects its classification.Aims. We aim to spatially resolve the photospheric extent as well as the circumstellar environment.Methods. We used interferometric observations obtained with the MATISSE instrument in the L (3-4 mu m), M (4.5-5 mu m), and N (8-13 mu m) bands. We reconstructed monochromatic images using the MIRA software. We used 3D radiation-hydrodynamics simulations carried out with (COBOLD)-B-5 and a uniform disc model to estimate the apparent diameter and interpret the stellar surface structures. Moreover, we employed the radiative transfer codes OPTIM3D and RADMC3D to compute the spectral energy distribution for the L, M, and N bands, respectively.Results. MATISSE observations unveil, for the first time, the morphology of VX Sgr across the L, M, and N bands. The reconstructed images show a complex morphology with brighter areas whose characteristics depend on the wavelength probed. We measured the angular diameter as a function of the wavelength and showed that the photospheric extent in the L and M bands depends on the opacity through the atmosphere. In addition to this, we also concluded that the observed photospheric inhomogeneities can be interpreted as convection-related surface structures. The comparison in the N band yielded a qualitative agreement between the N-band spectrum and simple dust radiative transfer simulations. However, it is not possible to firmly conclude on the interpretation of the current data because of the difficulty in constraing the model parameters using the limited accuracy of our absolute flux calibration.Conclusions. MATISSE observations and the derived reconstructed images unveil the appearance of VX Sgr's stellar surface and circumstellar environment across a very large spectral domain for the first time. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a stars | |
| 653 | a atmospheres | |
| 653 | a late-type | |
| 653 | a individual | |
| 653 | a VX Sgr | |
| 653 | a techniques | |
| 653 | a interferometric | |
| 653 | a infrared | |
| 653 | a imaging | |
| 700 | 1 | a Kravchenko, K.u Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany.4 aut |
| 700 | 1 | a Montarges, M.u Univ Paris, Observ Paris, Sorbonne Univ, CNRS,LESIA,Univ PSL, 5 Pl Jules Janssen, F-92195 Meudon, France.4 aut |
| 700 | 1 | a Millour, F.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Matter, A.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Freytag, Bernd,c Dr.u Uppsala universitet,Teoretisk astrofysik4 aut0 (Swepub:uu)befre677 |
| 700 | 1 | a Wittkowski, M.u European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany.4 aut |
| 700 | 1 | a Hocde, Vu Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Bartycka 18, PL-00716 Warsaw, Poland.4 aut |
| 700 | 1 | a Cruzalebes, P.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Allouche, F.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Lopez, B.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Lagarde, S.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Petrov, R. G.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Meilland, A.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Robbe-Dubois, S.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Hofmann, K-Hu Max Planck Inst Radioastron, Auf Hugel 69, D-53121 Bonn, Germany.4 aut |
| 700 | 1 | a Weigelt, G.u Max Planck Inst Radioastron, Auf Hugel 69, D-53121 Bonn, Germany.4 aut |
| 700 | 1 | a Berio, P.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Bendjoya, P.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Bettonvil, F.u Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.4 aut |
| 700 | 1 | a de Souza, A. Domicianou Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Heininger, M.u Max Planck Inst Radioastron, Auf Hugel 69, D-53121 Bonn, Germany.4 aut |
| 700 | 1 | a Henning, Thu Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.4 aut |
| 700 | 1 | a Isbell, J. W.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.4 aut |
| 700 | 1 | a Jaffe, W.u Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.4 aut |
| 700 | 1 | a Labadie, L.u Univ Cologne, Phys Inst 1, Zupicher Str 77, D-50937 Cologne, Germany.4 aut |
| 700 | 1 | a Lehmitz, M.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.4 aut |
| 700 | 1 | a Meisenheimer, K.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.4 aut |
| 700 | 1 | a Soulain, A.u Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France.4 aut |
| 700 | 1 | a Varga, J.u Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.;Eotvos Lorand Res Network ELKH, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, Hungary.4 aut |
| 700 | 1 | a Augereau, J-Cu Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France.4 aut |
| 700 | 1 | a van Boekel, R.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.4 aut |
| 700 | 1 | a Burtscher, L.u Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.4 aut |
| 700 | 1 | a Danchi, W. C.u NASA, Astrophys Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.4 aut |
| 700 | 1 | a Dominik, C.u Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1090 GE Amsterdam, Netherlands.4 aut |
| 700 | 1 | a Drevon, J.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Rosas, V. Gamezu Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.4 aut |
| 700 | 1 | a Hogerheijde, M. R.u Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.;Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1090 GE Amsterdam, Netherlands.4 aut |
| 700 | 1 | a Hron, J.u Univ Vienna, Dept Astrophys, Turkenschanzstr 17, A-1180 Vienna, Austria.4 aut |
| 700 | 1 | a Klarmann, L.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.4 aut |
| 700 | 1 | a Kokoulina, E.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Lagadec, E.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Leftley, J.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Mosoni, L.u Zselic Pk Stars, 064-2 Hrsz, H-7477 Zselickisfalud, Hungary.4 aut |
| 700 | 1 | a Nardetto, N.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Paladini, C.u European Southern Observ, Alonso de Cordova 3107,Casilla 19, Santiago 19001, Chile.4 aut |
| 700 | 1 | a Pantin, E.u Univ Paris Saclay, Univ Paris Diderot, CNRS, CEA,AIM,Sorbonne Paris Cite, F-91191 Gif Sur Yvette, France.4 aut |
| 700 | 1 | a Schertl, D.u Max Planck Inst Radioastron, Auf Hugel 69, D-53121 Bonn, Germany.4 aut |
| 700 | 1 | a Stee, P.u Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.4 aut |
| 700 | 1 | a Szabados, L.u Eotvos Lorand Res Network ELKH, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, Hungary.;CSFK Lendulet Near Field Cosmol Res Grp, Budapest, Hungary.4 aut |
| 700 | 1 | a Waters, R.u Radboud Univ Nijmegen, Inst Math Astrophys & Particle Phys, POB 9010,MC 62, NL-6500 GL Nijmegen, Netherlands.;SRON Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands.4 aut |
| 700 | 1 | a Wolf, S.u Univ Kiel, Inst Theoret Phys & Astrophys, Leibnizstr 15, D-24118 Kiel, Germany.4 aut |
| 700 | 1 | a Yoffe, G.u Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands.4 aut |
| 710 | 2 | a Univ Cote dAzur, CNRS, Observ Cote dAzur, CS 34229, F-34229 Nice, France.;European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany.;Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching, Germany.b Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany.4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 658q 658x 0004-6361x 1432-0746 |
| 856 | 4 | u https://doi.org/10.1051/0004-6361/202142514y Fulltext |
| 856 | 4 | u https://uu.diva-portal.org/smash/get/diva2:1647691/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print |
| 856 | 4 | u http://arxiv.org/pdf/2112.10695 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-470462 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/202142514 |
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- Chiavassa, A.
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- Hocde, V
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- Robbe-Dubois, S.
- Hofmann, K-H
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- Varga, J.
- Augereau, J-C
- van Boekel, R.
- Burtscher, L.
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- Drevon, J.
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- Klarmann, L.
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- Leftley, J.
- Mosoni, L.
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- Paladini, C.
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