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http://hdl.handle.net/20.500.12386/29657
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Kasper, M. | en_US |
dc.contributor.author | RADHAKRISHNAN SANTHAKUMARI, KALYAN KUMAR | en_US |
dc.contributor.author | Herbst, T. M. | en_US |
dc.contributor.author | Köhler, R. | en_US |
dc.date.accessioned | 2021-01-11T15:45:13Z | - |
dc.date.available | 2021-01-11T15:45:13Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29657 | - |
dc.description.abstract | <BR /> Aims: The immediate vicinity of T Tauri was observed with the new high-contrast imaging instrument SPHERE at the VLT to resolve remaining mysteries of the system, such as the putative small edge-on disk around T Tauri Sa and the assignment of the complex outflow patterns to the individual stars. <BR /> Methods: We used SPHERE IRDIS narrow-band classical imaging in Paβ, Brγ, and the ν = 1-0 S(1) line of H<SUB>2</SUB>, as well as in the nearby continua to obtain high spatial resolution and high-contrast images over the near-infrared spectral range. Line maps were created by subtracting the nearby continuum. We also reanalyzed coronagraphic data taken with SPHERE's integral field spectrograph in J- and H-band with the goal of obtaining a precise extinction estimate to T Tauri Sb, and of verifying the recently reported claim of another stellar or substellar object in the system. <BR /> Results: A previously unknown coiling structure is observed southwest of the stars in reflected light, which points to the vicinity of T Tauri N. We map the circumbinary emission from T Tauri S in J- and H-band scattered light for the first time, showing a morphology that differs significantly from that observed in K-band. Molecular Hydrogen emission is found southwest of the stars, near the coiling structure. We also detect the H<SUB>2</SUB> emitting region T Tauri NW. The motion of T Tauri NW with respect to T Tauri N and S between previous images and our 2014 data provides strong evidence that the southeast-northwest outflow triggering T Tauri NW is likely to be associated with T Tauri S. We also present accurate relative photometry of the stars, which confirms that T Tauri Sa is brightening again. Our analysis rules out the presence of the recently proposed companion to T Tauri N with high confidence. | en_US |
dc.language.iso | eng | en_US |
dc.title | New circumstellar structure in the T Tauri system. A near-infrared high-contrast imaging study | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201527818 | en_US |
dc.identifier.scopus | 2-s2.0-84987853178 | en_US |
dc.identifier.isi | 000385820100029 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2016/09/aa27818-15/aa27818-15.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 593 | en_US |
dc.relation.firstpage | A50 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016A&A...593A..50K | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0003-2674-1504 | - |
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