Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27279
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Stelzer, B. | en_US |
dc.contributor.author | DE MARTINO, Domitilla | en_US |
dc.contributor.author | Casewell, S. L. | en_US |
dc.contributor.author | Wynn, G. A. | en_US |
dc.contributor.author | Roy, M. | en_US |
dc.date.accessioned | 2020-09-10T10:30:08Z | - |
dc.date.available | 2020-09-10T10:30:08Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27279 | - |
dc.description.abstract | In an XMM-Newton observation of the binary SDSS J121209.31+013627.7, consisting of a white dwarf and an L dwarf, we detect X-ray orbital modulation as proof of accretion from the substellar companion onto the magnetic white dwarf. We constrain the system geometry (inclination as well as magnetic and pole-cap angle) through modelling of the X-ray light curve, and we derive a mass accretion rate of 3.2 × 10<SUP>-14</SUP>M<SUB>☉</SUB>/ yr from the X-ray luminosity ( 3 × 10<SUP>29</SUP> erg/s). From X-ray studies of L dwarfs, a possible wind driven from a hypothesized corona on the substellar donor is orders of magnitude too weak to explain the observed accretion rate, while the radius of the L dwarf is comparable to its Roche lobe (0.1 R<SUB>☉</SUB>), making Roche-lobe overflow the likely accretion mechanism in this system. | en_US |
dc.language.iso | eng | en_US |
dc.title | X-ray orbital modulation of a white dwarf accreting from an L dwarf. The system SDSS J121209.31+013627.7 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201630038 | en_US |
dc.identifier.scopus | 2-s2.0-85010986791 | en_US |
dc.identifier.isi | 000394465000143 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2017/02/aa30038-16/aa30038-16.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 598 | en_US |
dc.relation.firstpage | L6 | en_US |
dc.relation.numberofpages | 5 | en_US |
dc.relation.article | L6 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 5 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | DEU | 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 | 2017A&A...598L...6S | 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.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0002-5069-4202 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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STELZER_2017.pdf | Pdf editoriale | 436.93 kB | Adobe PDF | Visualizza/apri |
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