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http://hdl.handle.net/20.500.12386/27790
Campo DC | Valore | Lingua |
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dc.contributor.author | FRASCA, Antonio | en_US |
dc.contributor.author | Montes, D. | en_US |
dc.contributor.author | ALCALA', JUAN MANUEL | en_US |
dc.contributor.author | Klutsch, A. | en_US |
dc.contributor.author | Guillout, P. | en_US |
dc.date.accessioned | 2020-10-14T09:41:45Z | - |
dc.date.available | 2020-10-14T09:41:45Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0001-5237 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27790 | - |
dc.description.abstract | In this paper we present the results of a simultaneous BVRI and Hα photometric monitoring, contemporaneous to medium-resolution spectroscopy of six T Tau stars in the Taurus-Auriga star forming region. We have characterized the Hα photometric system using synthetic templates and the contemporaneous spectra of the targets. We show that we can achieve a precision corresponding to 2-3 Å in the Hα equivalent width, in typical observing conditions. <P />The spectral analysis has allowed us to determine the basic stellar parameters and the values of quantities related to the accretion. In particular, we have measured a significant veiling only for the three targets with the strongest Hα emission (T Tau, FM Tau, and DG Tau). <P />The broad-band photometric variations are found to be in the range of 0.05-0.70 mag and are often paired to variations in the Hα intensity, which becomes stronger when the stellar continuum is weaker. In addition, we have mostly observed a redder V-I and a bluer B-V color as the stars become fainter. For most of the targets, the timescales of these variations seem to be longer than the rotation period. One exception is T Tau, for which the broad-band photometry varies with the rotation period. The most plausible interpretation of these photometric and Hα variations is that they are due to non-stationary mass accretion onto the stars, but rotational modulation can play a major role in some cases. | en_US |
dc.language.iso | eng | en_US |
dc.title | Contemporaneous Broad-Band Photometry and Hα Observations of T Tau Stars | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.32023/0001-5237/68.4.5 | en_US |
dc.identifier.scopus | 2-s2.0-85060044763 | en_US |
dc.identifier.isi | 000464124600005 | en_US |
dc.identifier.url | http://acta.astrouw.edu.pl/Vol68/n4/a_68_4_5.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 68 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 403 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | FRA | en_US |
dc.contributor.country | ESP | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ACTA ASTRONOMICA | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018AcA....68..403F | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering | 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 | 0001-5237 | - |
crisitem.journal.ance | E001697 | - |
crisitem.author.dept | O.A. Catania | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0002-0474-0896 | - |
crisitem.author.orcid | 0000-0001-8657-095X | - |
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