dc.contributor.author | Oudmaijer, R.D. | |
dc.contributor.author | Drew, J.E. | |
dc.contributor.author | Vink, J.S. | |
dc.date.accessioned | 2008-01-02T10:00:11Z | |
dc.date.available | 2008-01-02T10:00:11Z | |
dc.date.issued | 2005 | |
dc.identifier.citation | Oudmaijer , R D , Drew , J E & Vink , J S 2005 , ' Near-infrared line spectropolarimetry of hot massive stars ' , Monthly Notices of the Royal Astronomical Society , vol. 364 , no. 2 , pp. 725-730 . https://doi.org/10.1111/j.1365-2966.2005.09598.x | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | dspace: 2299/1283 | |
dc.identifier.uri | http://hdl.handle.net/2299/1283 | |
dc.description | The definitive version is available at www.blackwell-synergy.com. Copyright Blackwell Publishing --DOI : 10.1111/j.1365-2966.2005.09598.x | |
dc.description.abstract | In order to study the inner parts of the circumstellar material around optically faint, infrared bright objects, we present the first medium-resolution spectropolarimetric data taken in the near-infrared. In this paper we discuss Pa line data of GL 490, a well-known embedded massive young stellar object, and of MWC 349A and MWC 342, two optically faint stars that are proposed to be in the pre-main sequence phase of evolution. As a check on the method, the classical Be star Tau, known to display line polarization changes at optical wavelengths, was observed as well. Three of our targets show a “line effect” across Pa . For Tau and MWC 349A this line effect is due to depolarisation by a circumstellar electron-scattering disk. In both cases, the position angle of the polarisation is consistent with that of the larger scale disks imaged at other wavelengths, validating infrared spectropolarimetry as a means to detect flattening on small scales. The tentative detection of a rotation in the polarization position angle at Pa in the embedded massive young stellar object GL 490 suggests the presence of a small scale rotating accretion disk with an inner hole – similar to those recently discovered at optical wavelengths in Herbig Ae and T Tauri stars. | en |
dc.format.extent | 185717 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.title | Near-infrared line spectropolarimetry of hot massive stars | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1111/j.1365-2966.2005.09598.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |