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dc.date.accessioned | 2020-04-15T19:12:45Z | |
dc.date.available | 2020-04-15T19:12:45Z | |
dc.date.issued | 2018-10 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/93487 | |
dc.description.abstract | B[e] supergiants are luminous evolved massive stars. The mass-loss during this phase creates a complex circumstellar environment with atomic, molecular, and dusty regions usually found in rings or disc-like structures. For a better comprehension of the mechanisms behind the formation of these rings, detailed knowledge about their structure and dynamics is essential. To address that, we obtained high-resolution optical and near-infrared (near-IR) spectra for eight selected Galactic B[e] supergiants, for which CO emission has been detected. Assuming Keplerian rotation for the disc, we combine the kinematics obtained from the CO bands in the near-IR with those obtained by fitting the forbidden emission [OI] λ5577, [O I] λλ6300,6363, and [Ca II] λλ7291,7323 lines in the optical to probe the disc structure. We find that the emission originates from multiple ring structures around all B[e] supergiants, with each one of them displaying a unique combination of rings regardless of whether the object is part of a binary system. The confirmed binaries display spectroscopic variations of their line intensities and profiles as well as photometric variability, whereas the ring structures around the single stars are stable. | en |
dc.format.extent | 320-344 | es |
dc.language | en | es |
dc.subject | Stars: circumstellar matter | es |
dc.subject | Stars: early-type | es |
dc.subject | Stars: massive | es |
dc.subject | Stars: supergiants | es |
dc.subject | Stars: winds, outflows | es |
dc.title | Resolving the kinematics of the discs around Galactic B[e] supergiants | en |
dc.type | Articulo | es |
sedici.identifier.uri | https://academic.oup.com/mnras/article-abstract/480/1/320/5049025?redirectedFrom=fulltext | es |
sedici.identifier.other | http://dx.doi.org/10.1093/mnras/sty1747 | es |
sedici.identifier.other | hdl:11336/96863 | es |
sedici.identifier.issn | 0035-8711 | es |
sedici.creator.person | Maravelias, G. | es |
sedici.creator.person | Kraus, Michael | es |
sedici.creator.person | Cidale, Lydia Sonia | es |
sedici.creator.person | Borges Fernades, M. | es |
sedici.creator.person | Arias, María Laura | es |
sedici.creator.person | Curé, Michel | es |
sedici.creator.person | Vasilopoulos, G. | es |
sedici.subject.materias | Ciencias Astronómicas | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Instituto de Astrofísica de La Plata | es |
mods.originInfo.place | Facultad de Ciencias Astronómicas y Geofísicas | es |
sedici.subtype | Preprint | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Monthly Notices of the Royal Astronomical Society | es |
sedici.relation.journalVolumeAndIssue | vol. 480, no. 1 | es |