Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/24481
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Toloza, O. | en_US |
dc.contributor.author | Gänsicke, B. T. | en_US |
dc.contributor.author | Hermes, J. J. | en_US |
dc.contributor.author | Townsley, D. M. | en_US |
dc.contributor.author | Schreiber, M. R. | en_US |
dc.contributor.author | Szkody, P. | en_US |
dc.contributor.author | Pala, A. | en_US |
dc.contributor.author | Beuermann, K. | en_US |
dc.contributor.author | Bildsten, L. | en_US |
dc.contributor.author | Breedt, E. | en_US |
dc.contributor.author | Cook, M. | en_US |
dc.contributor.author | Godon, P. | en_US |
dc.contributor.author | Henden, A. A. | en_US |
dc.contributor.author | Hubeny, I. | en_US |
dc.contributor.author | Knigge, C. | en_US |
dc.contributor.author | Long, K. S. | en_US |
dc.contributor.author | Marsh, T. R. | en_US |
dc.contributor.author | DE MARTINO, Domitilla | en_US |
dc.contributor.author | Mukadam, A. S. | en_US |
dc.contributor.author | Myers, G. | en_US |
dc.contributor.author | Nelson, P. | en_US |
dc.contributor.author | Oksanen, A. | en_US |
dc.contributor.author | Patterson, J. | en_US |
dc.contributor.author | Sion, E. M. | en_US |
dc.contributor.author | Zorotovic, M. | en_US |
dc.date.accessioned | 2020-05-05T09:20:36Z | - |
dc.date.available | 2020-05-05T09:20:36Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24481 | - |
dc.description.abstract | Non-radial pulsations have been identified in a number of accreting white dwarfs in cataclysmic variables. These stars offer insight into the excitation of pulsation modes in atmospheres with mixed compositions of hydrogen, helium, and metals, and the response of these modes to changes in the white dwarf temperature. Among all pulsating cataclysmic variable white dwarfs, GW Librae stands out by having a well-established observational record of three independent pulsation modes that disappeared when the white dwarf temperature rose dramatically following its 2007 accretion outburst. Our analysis of Hubble Space Telescope (HST) ultraviolet spectroscopy taken in 2002, 2010, and 2011, showed that pulsations produce variations in the white dwarf effective temperature as predicted by theory. Additionally in 2013 May, we obtained new HST/Cosmic Origin Spectrograph ultraviolet observations that displayed unexpected behaviour: besides showing variability at ≃275 s, which is close to the post-outburst pulsations detected with HST in 2010 and 2011, the white dwarf exhibits high-amplitude variability on an ≃4.4 h time-scale. We demonstrate that this variability is produced by an increase of the temperature of a region on white dwarf covering up to ≃30 per cent of the visible white dwarf surface. We argue against a short-lived accretion episode as the explanation of such heating, and discuss this event in the context of non-radial pulsations on a rapidly rotating star. | en_US |
dc.language.iso | eng | en_US |
dc.title | GW Librae: a unique laboratory for pulsations in an accreting white dwarf | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stw838 | en_US |
dc.identifier.scopus | 2-s2.0-84982257347 | en_US |
dc.identifier.isi | 000379830700041 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/459/4/3929/2624005 | en_US |
dc.identifier.url | https://arxiv.org/abs/1604.02162 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 459 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 3929 | en_US |
dc.relation.lastpage | 3938 | en_US |
dc.relation.numberofpages | 10 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 25 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | GBR | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016MNRAS.459.3929T | 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 | 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.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0002-5069-4202 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stw838.pdf | pdf editoriale | 2.34 MB | Adobe PDF | View/Open |
Page view(s)
66
checked on Sep 11, 2024
Download(s)
15
checked on Sep 11, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.