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dc.contributor.author
Schöller, M.
dc.contributor.author
Pogodin, M. A.
dc.contributor.author
Cahuasquí, J. A.
dc.contributor.author
Drake, N.A.
dc.contributor.author
Hubrig, S.
dc.contributor.author
Petr Gotzens, M. G.
dc.contributor.author
Savanov, I.
dc.contributor.author
Wolff, B.
dc.contributor.author
Gonzalez, Jorge Federico
dc.contributor.author
Mysore, S.
dc.contributor.author
Ilyin, I.
dc.contributor.author
Järvinen, S.
dc.contributor.author
Stelzer, B.
dc.date.available
2018-10-29T14:36:02Z
dc.date.issued
2016-08
dc.identifier.citation
Schöller, M.; Pogodin, M. A.; Cahuasquí, J. A.; Drake, N.A.; Hubrig, S.; et al.; Spectroscopic signatures of magnetospheric accretion in Herbig Ae/Be stars: I. The case of HD 101412; EDP Sciences; Astronomy and Astrophysics; 592; 8-2016; 1-8; A50
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/63176
dc.description.abstract
Context. Models of magnetically-driven accretion and outflows reproduce many observational properties of T Tauri stars. This concept is not well established for the more massive Herbig Ae/Be stars. Aims. We intend to examine the magnetospheric accretion in Herbig Ae/Be stars and search for rotational modulation using spectroscopic signatures, in this first paper concentrating on the well-studied Herbig Ae star HD 101412. Methods. We used near-infrared spectroscopic observations of the magnetic Herbig Ae star HD 101412 to test the magnetospheric character of its accretion disk/star interaction. We reduced and analyzed 30 spectra of HD 101412, acquired with the CRIRES and X-shooter spectrographs installed at the VLT (ESO, Chile). The spectroscopic analysis was based on the He iλ10 830 and Paγ lines, formed in the accretion region. Results. We found that the temporal behavior of these diagnostic lines in the near-infrared spectra of HD 101412 can be explained by rotational modulation of line profiles generated by accreting gas with a period P = 20d.53 ± 1d.68. The discovery of this period, about half of the magnetic rotation period Pm = 42d.076 previously determined from measurements of the mean longitudinal magnetic field, indicates that the accreted matter falls onto the star in regions close to the magnetic poles intersecting the line-of-sight two times during the rotation cycle. We intend to apply this method to a larger sample of Herbig Ae/Be stars.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Accretion, Accretion Disks
dc.subject
Stars: Individual: Hd101412
dc.subject
Stars: Magnetic Field
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Stars: Pre-Main Sequence
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Spectroscopic signatures of magnetospheric accretion in Herbig Ae/Be stars: I. The case of HD 101412
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-27T20:15:33Z
dc.journal.volume
592
dc.journal.pagination
1-8; A50
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Schöller, M.. European Southern Observatory; Alemania
dc.description.fil
Fil: Pogodin, M. A.. Central Astronomical Observatory at Pulkovo; Rusia
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Fil: Cahuasquí, J. A.. Universitat zu Köln; Alemania
dc.description.fil
Fil: Drake, N.A.. Saint Petersburg State University; Rusia
dc.description.fil
Fil: Hubrig, S.. Leibniz Institut für Astrophysik Potsdam; Alemania
dc.description.fil
Fil: Petr Gotzens, M. G.. European Southern Observatory; Alemania
dc.description.fil
Fil: Savanov, I.. Institute of Astronomy; Rusia
dc.description.fil
Fil: Wolff, B.. European Southern Observatory; Alemania
dc.description.fil
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
dc.description.fil
Fil: Mysore, S.. European Southern Observatory; Alemania
dc.description.fil
Fil: Ilyin, I.. Leibniz Institut für Astrophysik Potsdam; Alemania
dc.description.fil
Fil: Järvinen, S.. Leibniz Institut für Astrophysik Potsdam; Alemania
dc.description.fil
Fil: Stelzer, B.. Istituto Nazionale Di Astrofísica. Osservatorio Astronómico Di Palermo; Italia
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/08/aa28361-16/aa28361-16.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201628361


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