Detached cataclysmic variables are crossing the orbital period gap

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Published by Oxford University Press on behalf of the Royal Astronomical Society.

Bibliographic Details
Authors: Zorotovic, Mónica, Schreiber, Mathias R., Parsons, S. G., Gaensicke, B. T., Hardy, A., Agurto Gangas, C., Nebot Gómez-Moran, Ada, Rebassa Mansergas, Alberto|||0000-0002-6153-7173, Schowpe, A. D.
Format: article
Publication Date:2016
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/88173
Online Access:https://hdl.handle.net/2117/88173
https://dx.doi.org/10.1093/mnras/stw246
Access Level:Open access
Keyword:Cataclysmic variable stars
White dwarf stars
Low mass stars
binaries-close
stars-evolution
stars
low-mass
novae
cataclysmic variables
white dwarfs
Estels binaris
Estels nans
Estels variables
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
id ES_89017a6dad98f3ee98ca2f4a21a2abc2
oai_identifier_str oai:upcommons.upc.edu:2117/88173
network_acronym_str ES
network_name_str España
repository_id_str
spelling Detached cataclysmic variables are crossing the orbital period gapZorotovic, MónicaSchreiber, Mathias R.Parsons, S. G.Gaensicke, B. T.Hardy, A.Agurto Gangas, C.Nebot Gómez-Moran, AdaRebassa Mansergas, Alberto|||0000-0002-6153-7173Schowpe, A. D.Cataclysmic variable starsWhite dwarf starsLow mass starsbinaries-closestars-evolutionstarslow-massnovaecataclysmic variableswhite dwarfsEstels binarisEstels nansEstels variablesÀrees temàtiques de la UPC::Física::Astronomia i astrofísicaThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Published by Oxford University Press on behalf of the Royal Astronomical Society.A central hypothesis in the theory of cataclysmic variable (CV) evolution is the need to explain the observed lack of accreting systems in the similar or equal to 2-3 h orbital period range, known as the period gap. The standard model, disrupted magnetic braking (DMB), reproduces the gap by postulating that CVs transform into inconspicuous detached white dwarf (WD) plus main sequence systems, which no longer resemble CVs. However, observational evidence for this standard model is currently indirect and thus this scenario has attracted some criticism throughout the last decades. Here, we perform a simple but exceptionally strong test of the existence of detached CVs (dCVs). If the theory is correct, dCVs should produce a peak in the orbital period distribution of detached close binaries consisting of a WD and an M4-M6 secondary star. We measured six new periods which brings the sample of such binaries with known periods below 10 h to 52 systems. An increase of systems in the similar or equal to 2-3 h orbital period range is observed. Comparing this result with binary population models, we find that the observed peak cannot be reproduced by post-common envelope binaries (PCEBs) alone and that the existence of dCVs is needed to reproduce the observations. Also, the WD mass distribution in the gap shows evidence of two populations in this period range, i.e. PCEBs and more massive dCVs, which is not observed at longer periods. We therefore conclude that CVs are indeed crossing the gap as detached systems, which provides strong support for the DMB theory.Peer Reviewed20162016-04-2120162016-06-20journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/88173https://dx.doi.org/10.1093/mnras/stw246reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 320964 White Dwarfs as Tracers of Stellar, Binary and Planetary Evolutionopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/881732026-05-27T15:37:01Z
dc.title.none.fl_str_mv Detached cataclysmic variables are crossing the orbital period gap
title Detached cataclysmic variables are crossing the orbital period gap
spellingShingle Detached cataclysmic variables are crossing the orbital period gap
Zorotovic, Mónica
Cataclysmic variable stars
White dwarf stars
Low mass stars
binaries-close
stars-evolution
stars
low-mass
novae
cataclysmic variables
white dwarfs
Estels binaris
Estels nans
Estels variables
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
title_short Detached cataclysmic variables are crossing the orbital period gap
title_full Detached cataclysmic variables are crossing the orbital period gap
title_fullStr Detached cataclysmic variables are crossing the orbital period gap
title_full_unstemmed Detached cataclysmic variables are crossing the orbital period gap
title_sort Detached cataclysmic variables are crossing the orbital period gap
dc.creator.none.fl_str_mv Zorotovic, Mónica
Schreiber, Mathias R.
Parsons, S. G.
Gaensicke, B. T.
Hardy, A.
Agurto Gangas, C.
Nebot Gómez-Moran, Ada
Rebassa Mansergas, Alberto|||0000-0002-6153-7173
Schowpe, A. D.
author Zorotovic, Mónica
author_facet Zorotovic, Mónica
Schreiber, Mathias R.
Parsons, S. G.
Gaensicke, B. T.
Hardy, A.
Agurto Gangas, C.
Nebot Gómez-Moran, Ada
Rebassa Mansergas, Alberto|||0000-0002-6153-7173
Schowpe, A. D.
author_role author
author2 Schreiber, Mathias R.
Parsons, S. G.
Gaensicke, B. T.
Hardy, A.
Agurto Gangas, C.
Nebot Gómez-Moran, Ada
Rebassa Mansergas, Alberto|||0000-0002-6153-7173
Schowpe, A. D.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cataclysmic variable stars
White dwarf stars
Low mass stars
binaries-close
stars-evolution
stars
low-mass
novae
cataclysmic variables
white dwarfs
Estels binaris
Estels nans
Estels variables
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
topic Cataclysmic variable stars
White dwarf stars
Low mass stars
binaries-close
stars-evolution
stars
low-mass
novae
cataclysmic variables
white dwarfs
Estels binaris
Estels nans
Estels variables
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
description This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Published by Oxford University Press on behalf of the Royal Astronomical Society.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-04-21
2016
2016-06-20
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/88173
https://dx.doi.org/10.1093/mnras/stw246
url https://hdl.handle.net/2117/88173
https://dx.doi.org/10.1093/mnras/stw246
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 320964 White Dwarfs as Tracers of Stellar, Binary and Planetary Evolution
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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