The wind and the magnetospheric accretion onto the T Tauri star  S Coronae Australis at sub-au resolution

R. Garcia Lopez; K. Perraut; A. Caratti O Garatti; B. Lazareff; J. Sanchez-Bermudez; M. Benisty; C. Dougados; L. Labadie; W. Brandner; J. Garcia; Th. Henning; P. Ray; R. Abuter; A. Amorim; N. Anugu; J. Berger; H. Bonnet; A. Buron; P. Caselli; Y. Clenet; Vincent Coudé Du Forestol; W. de Wit; C. Deen; F. Delplancke-Ströbele; J. Dexter; A. Eckart; F. Eisenhauer; C. Garcia; E. Gendron; R. Genzel; S. Gillessen; X. Haubois; M. Haug; F. Haussmann; S. Hippler; Z. Hubert; A. Hummel; M. Horrobin; L. Jocou; S. Kellner; P. Kervella; M. Kulas; J. Kolb; S. Lacour; B. Le Bouquin; P. Lena; M. Lippa; A. Merand; E. Müller; T. Ott; J. Panduro; T. Paumard; G. Perrin; O. Pfuhl; A. Ramírez; C. Rau; R. Rohloff; G. Rousset; S. Scheithauer; M. Scholler; C. Straubmeier; E. Sturm; W. Thi; E. van Dishoeck; F. Vincent; I. Waisberg; I. Wank; E. Wieprecht; M. Wiest; E. Wiezorrek; J. Woillez; S. Yazici; G. Zins

doi:10.1051/0004-6361/201731058

Journal Articles Astronomy and Astrophysics - A&A Year : 2017

The wind and the magnetospheric accretion onto the T Tauri star S Coronae Australis at sub-au resolution

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R. Garcia Lopez

Function : Author

K. Perraut

Function : Author

Institut de Planétologie et d'Astrophysique de Grenoble

A. Caratti O Garatti

Function : Author
PersonId : 764988
ORCID : 0000-0001-8876-6614

B. Lazareff

Function : Author

Institut de Planétologie et d'Astrophysique de Grenoble

J. Sanchez-Bermudez

Function : Author
PersonId : 778133
ORCID : 0000-0002-9723-0421

European Southern Observatory

M. Benisty

Function : Author
PersonId : 755605
ORCID : 0000-0002-7695-7605
IdRef : 130594024

Institut de Planétologie et d'Astrophysique de Grenoble

C. Dougados

Function : Author
PersonId : 755730
ORCID : 0000-0001-6660-936X
IdRef : 114309639

Institut de Planétologie et d'Astrophysique de Grenoble

L. Labadie

Function : Author

Institut de Planétologie et d'Astrophysique de Grenoble

W. Brandner

Function : Author
PersonId : 755515
ORCID : 0000-0003-1939-6351

Max-Planck-Institut für Astronomie

J. Garcia

Function : Author

Th. Henning

Function : Author
PersonId : 755782
ORCID : 0000-0002-1493-300X

Max-Planck-Institut für Astronomie

P. Ray

Function : Author

Institut Jean Le Rond d'Alembert

R. Abuter

Function : Author

European Southern Observatory

A. Amorim

Function : Author

N. Anugu

Function : Author

J. Berger

Function : Author

H. Bonnet

Function : Author

A. Buron

Function : Author

P. Caselli

Function : Author
PersonId : 755659
ORCID : 0000-0003-1481-7911
IdRef : 094785007

INAF - Osservatorio Astrofisico di Arcetri

Y. Clenet

Function : Author

Laboratoire d'études spatiales et d'instrumentation en astrophysique

Vincent Coudé Du Forestol

Function : Author

Laboratoire d'études spatiales et d'instrumentation en astrophysique

W. de Wit

Function : Author

C. Deen

Function : Author

F. Delplancke-Ströbele

Function : Author

J. Dexter

Function : Author
PersonId : 783196
ORCID : 0000-0003-3903-0373

A. Eckart

Function : Author
PersonId : 759889
ORCID : 0000-0001-6049-3132

Max-Planck-Institut für Radioastronomie

F. Eisenhauer

Function : Author

Max Planck Institute for Extraterrestrial Physics

C. Garcia

Function : Author

E. Gendron

Function : Author

Laboratoire d'études spatiales et d'instrumentation en astrophysique

R. Genzel

Function : Author
PersonId : 755077
ORCID : 0000-0002-2767-9653
IdRef : 085842486

Max Planck Institute for Extraterrestrial Physics

S. Gillessen

Function : Author
PersonId : 755358
ORCID : 0000-0002-5708-0481

Max Planck Institute for Extraterrestrial Physics

X. Haubois

Function : Author

M. Haug

Function : Author

F. Haussmann

Function : Author

S. Hippler

Function : Author
PersonId : 783757
ORCID : 0000-0002-3912-6108

Z. Hubert

Function : Author

Laboratoire d'études spatiales et d'instrumentation en astrophysique

A. Hummel

Function : Author

Mayo Clinic [Rochester]

M. Horrobin

Function : Author
PersonId : 758784
ORCID : 0000-0001-5451-7847

Galaxies, Etoiles, Physique, Instrumentation

L. Jocou

Function : Author
PersonId : 1337469
ORCID : 0000-0001-9376-1818

Institut de Planétologie et d'Astrophysique de Grenoble

S. Kellner

Function : Author

P. Kervella

Function : Author
PersonId : 830449
IdHAL : pierre-kervella
ORCID : 0000-0003-0626-1749
IdRef : 089060644

Laboratoire d'études spatiales et d'instrumentation en astrophysique

M. Kulas

Function : Author

J. Kolb

Function : Author

S. Lacour

Function : Author
PersonId : 739267
IdHAL : sylvestre-lacour
ORCID : 0000-0002-6948-0263
IdRef : 129379085

Laboratoire Transport et Environnement

B. Le Bouquin

Function : Author

P. Lena

Function : Author

Laboratoire d'études spatiales et d'instrumentation en astrophysique

M. Lippa

Function : Author

A. Merand

Function : Author

European Southern Observatory

E. Müller

Function : Author

T. Ott

Function : Author
PersonId : 759890
ORCID : 0000-0003-1572-0396

Swedish Space Corporation

J. Panduro

Function : Author

T. Paumard

Function : Author
PersonId : 740129
IdHAL : thibaut-paumard
ORCID : 0000-0003-0655-0452
IdRef : 090171454

Laboratoire d'études spatiales et d'instrumentation en astrophysique

G. Perrin

Function : Author
PersonId : 755121
ORCID : 0000-0003-0680-0167
IdRef : 030487641

Laboratoire d'études spatiales et d'instrumentation en astrophysique

O. Pfuhl

Function : Author

Max Planck Institute for Extraterrestrial Physics

A. Ramírez

Function : Author
PersonId : 952179

Departamento de Control Automático

C. Rau

Function : Author

DIAMOND Light source

R. Rohloff

Function : Author

G. Rousset

Function : Author

Laboratoire d'études spatiales et d'instrumentation en astrophysique

S. Scheithauer

Function : Author

M. Scholler

Function : Author

Institut de biologie et chimie des protéines [Lyon]

C. Straubmeier

Function : Author
PersonId : 759891
ORCID : 0000-0002-0671-9302

Universität zu Köln = University of Cologne

E. Sturm

Function : Author
PersonId : 763193
ORCID : 0000-0002-0018-3666

Max Planck Institute for Extraterrestrial Physics

W. Thi

Function : Author

E. van Dishoeck

Function : Author
PersonId : 761396
ORCID : 0000-0001-7591-1907
IdRef : 136541518

Leiden Observatory [Leiden]

F. Vincent

Function : Author
PersonId : 806321
ORCID : 0000-0002-3855-0708

Laboratoire d'études spatiales et d'instrumentation en astrophysique

I. Waisberg

Function : Author

I. Wank

Function : Author

E. Wieprecht

Function : Author

M. Wiest

Function : Author

E. Wiezorrek

Function : Author

Max Planck Institute for Extraterrestrial Physics

J. Woillez

Function : Author
PersonId : 755123
ORCID : 0000-0002-2958-4738

European Southern Observatory

S. Yazici

Function : Author

G. Zins

Function : Author

Institut de Planétologie et d'Astrophysique de Grenoble

Abstract

Aims. To investigate the inner regions of protoplanetary discs, we performed near-infrared interferometric observations of the classical T Tauri binary system S CrA.Methods. We present the first VLTI-GRAVITY high spectral resolution (R ~ 4000) observations of a classical T Tauri binary, S CrA (composed of S CrA N and S CrA S and separated by ~1.̋4), combining the four 8m telescopes in dual-field mode. Results. Our observations in the near-infrared K-band continuum reveal a disc around each binary component, with similar half-flux radii of about 0.1 au at d ~ 130 pc, inclinations (i = 28 ± 3° and i = 22 ± 6°), and position angles (PA = 0°± 6° and PA = –2°± 12°), suggesting that they formed from the fragmentation of a common disc. The S CrA N spectrum shows bright He i and Brγ line emission exhibiting inverse P Cygni profiles, typically associated with infalling gas. The continuum-compensated Brγ line visibilities of S CrA N show the presence of a compact Brγ emitting region whose radius is about ~0.06 au, which is twice as big as the truncation radius. This component is mostly tracing a wind. Moreover, a slight radius change between the blue- and red-shifted Brγ line components is marginally detected.Conclusions. The presence of an inverse P Cygni profile in the He i and Brγ lines, along with the tentative detection of a slightly larger size of the blue-shifted Brγ line component, hint at the simultaneous presence of a wind and magnetospheric accretion in S CrA N.

Keywords

stars: formation circumstellar matter ISM: jets and outflows ISM: individual objects: S CrA infrared: ISM techniques: interferometric

Domains

Astrophysics [astro-ph] Astrophysics [astro-ph]

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https://hal-obspm.ccsd.cnrs.fr/obspm-02190736

Submitted on : Tuesday, October 13, 2020-2:45:25 AM

Last modification on : Friday, July 19, 2024-4:55:12 PM

Long-term archiving on : Thursday, January 14, 2021-6:12:53 PM

Dates and versions

obspm-02190736 , version 1 (13-10-2020)

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HAL Id : obspm-02190736 , version 1
DOI : 10.1051/0004-6361/201731058

Cite

R. Garcia Lopez, K. Perraut, A. Caratti O Garatti, B. Lazareff, J. Sanchez-Bermudez, et al.. The wind and the magnetospheric accretion onto the T Tauri star S Coronae Australis at sub-au resolution. Astronomy and Astrophysics - A&A, 2017, 608, pp.A78. ⟨10.1051/0004-6361/201731058⟩. ⟨obspm-02190736⟩

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The wind and the magnetospheric accretion onto the T Tauri star S Coronae Australis at sub-au resolution

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