WFRF:(Vaillancourt P. A.)
Sökning: WFRF:(Vaillancourt P. A.) > Polarisation observ...
LIBRIS Formathandbok (Information om MARC21)
| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 06059naa a2200817 4500 | |
| 001 | oai:research.chalmers.se:27884a6b-8e9e-4982-b763-aeed3a22904a | |
| 003 | SwePub | |
| 008 | 171008s2010 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://research.chalmers.se/publication/1318972 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2010150422 DOI |
| 040 | a (SwePub)cth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Harwit, M.u Cornell University4 aut |
| 245 | 1 0 | a Polarisation observations of VY Canis Majoris H2O 532-441 620.701 GHz maser emission with HIFI |
| 264 | c 2010-10-01 | |
| 264 | 1 | b EDP Sciences,c 2010 |
| 338 | a electronic2 rdacarrier | |
| 520 | a Context. Water vapour maser emission from evolved oxygen-rich stars remains poorly understood. Additional observations, including polarisation studies and simultaneous observation of different maser transitions may ultimately lead to greater insight. Aims. We have aimed to elucidate the nature and structure of the VY CMa water vapour masers in part by observationally testing a theoretical prediction of the relative strengths of the 620.701 GHz and the 22.235 GHz maser components of ortho H2O. Methods. In its high-resolution mode (HRS) the Herschel Heterodyne Instrument for the Far Infrared (HIFI) offers a frequency resolution of 0.125 MHz, corresponding to a line-of-sight velocity of 0.06 km s(-1), which we employed to obtain the strength and linear polarisation of maser spikes in the spectrum of VY CMa at 620.701 GHz. Simultaneous ground based observations of the 22.235 GHz maser with the Max-Planck-Institut fur Radioastronomie 100-m telescope at Effelsberg, provided a ratio of 620.701 GHz to 22.235 GHz emission. Results. We report the first astronomical detection to date of H2O maser emission at 620.701 GHz. In VY CMa both the 620.701 and the 22.235 GHz polarisation are weak. At 620.701 GHz the maser peaks are superposed on what appears to be a broad emission component, jointly ejected from the star. We observed the 620.701 GHz emission at two epochs 21 days apart, both to measure the potential direction of linearly polarised maser components and to obtain a measure of the longevity of these components. Although we do not detect significant polarisation levels in the core of the line, they rise up to approximately 6% in its wings. | |
| 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: winds | |
| 653 | a supergiants | |
| 653 | a evolved stars | |
| 653 | a polarimeter | |
| 653 | a millimeter | |
| 653 | a reference systems | |
| 653 | a water masers | |
| 653 | a line | |
| 653 | a masers | |
| 653 | a late-type stars | |
| 653 | a stars: AGB and post-AGB | |
| 653 | a sharp | |
| 653 | a outflows | |
| 653 | a circumstellar matter | |
| 700 | 1 | a Houde, M.u Western University4 aut |
| 700 | 1 | a Sonnentrucker, P.u Johns Hopkins University4 aut |
| 700 | 1 | a Boogert, A.u California Institute of Technology (Caltech)4 aut |
| 700 | 1 | a Cernicharo, J.4 aut |
| 700 | 1 | a De Beck, Elvire,d 1985u Katholieke Universiteit Leuven4 aut0 (Swepub:cth)elvire |
| 700 | 1 | a Decin, L.u Katholieke Universiteit Leuven,Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Henkel, C.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Higgins, R.u Maynooth University4 aut |
| 700 | 1 | a Jellema, W.u Netherlands Institute for Space Research (SRON)4 aut |
| 700 | 1 | a Kraus, A.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a McCoey, C.u University of Waterloo,Western University4 aut |
| 700 | 1 | a Melnick, G. J.u Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Menten, K. M.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Risacher, C.u Netherlands Institute for Space Research (SRON)4 aut |
| 700 | 1 | a Teyssier, D.u European Space Astronomy Centre (ESAC)4 aut |
| 700 | 1 | a Vaillancourt, J. E.u Universities Space Research Association4 aut |
| 700 | 1 | a Alcolea, J.4 aut |
| 700 | 1 | a Bujarrabal, V.4 aut |
| 700 | 1 | a Dominik, C.u Radboud Universiteit,Radboud University,Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Justtanont, Kay,d 1965u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)justtano |
| 700 | 1 | a de Koter, A.u Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Marston, A. P.u European Space Astronomy Centre (ESAC)4 aut |
| 700 | 1 | a Olofsson, Hans,d 1952u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)hanolo |
| 700 | 1 | a Planesas, P.u Atacama Large Millimeter-submillimeter Array (ALMA)4 aut |
| 700 | 1 | a Schmidt, M.u Polish Academy of Sciences4 aut |
| 700 | 1 | a Schöier, Fredrik,d 1969u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)schoier |
| 700 | 1 | a Szczerba, R.u Polish Academy of Sciences4 aut |
| 700 | 1 | a Waters, Lbfmu Katholieke Universiteit Leuven,Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 710 | 2 | a Cornell Universityb Western University4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 521:1, s. Article Number: L51-q 521:1<Article Number: L51-x 0004-6361x 1432-0746 |
| 856 | 4 | u http://publications.lib.chalmers.se/records/fulltext/local_131897.pdfx primaryx freey FULLTEXT |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2010/13/aa15042-10.pdf |
| 856 | 4 8 | u https://research.chalmers.se/publication/131897 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/201015042 |
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