The (O–C) diagram problem of triple pre-cataclysmic system V471 Tau solved View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2011-01

AUTHORS

E. Kundra, L. Hric

ABSTRACT

V471 Tau was discovered as a spectroscopic binary by Wilson (General Catalogue of Stellar Radial Velocities, p. 44, 1953). It is the prototype of a post-common envelope system and a progenitor of a cataclysmic binary. The system consists of a cool red dwarf, K2 V, very probably a main sequence star and a hot white dwarf. The object was classified as a close binary with an orbital period of around 0.5 days. Moreover, on the light curve are observed light variations with a period of 191 days, which are connected with an ellipsoidal shape of the red dwarf as well as with the migration of spots on the surface of this cool component. The eclipse of the white dwarf in the binary remains 49 minutes and declines to the minimum and the increase from the minimum takes only 55 s. Such photometric behaviour hinders obtaining good eclipses. In this paper we have obtained during four years seven eclipses with high time resolution with all four contacts to reach precise times of minima. Fortunately these times of the minima show a change of trend in the (O–C) diagram, and we were able to decide about the physical processes responsible for the behaviour of the (O–C) diagram. We showed that this behaviour is caused by a third body in the system with an orbital period of 33.2 years, and its physical and geometrical parameters are presented. For an inclination larger than 35° we get the mass of this body below the stable hydrogen-burning limit and thus most probably the candidate would be a brown dwarf. More... »

PAGES

121-126

References to SciGraph publications

  • 1985. Pre-Cataclysmic Binaries in CATACLYSMIC VARIABLES AND LOW-MASS X-RAY BINARIES
  • 2003. The Eclipsing Cataclysmic Triple System V471 Tau in STELLAR ASTROPHYSICS — A TRIBUTE TO HELMUT A. ABT
  • 1986-03. Light curve variations in V471 Tauri in ASTROPHYSICS AND SPACE SCIENCE
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s10509-010-0433-8

    DOI

    http://dx.doi.org/10.1007/s10509-010-0433-8

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1034264964


    Indexing Status Check whether this publication has been indexed by Scopus and Web Of Science using the SN Indexing Status Tool
    Incoming Citations Browse incoming citations for this publication using opencitations.net

    JSON-LD is the canonical representation for SciGraph data.

    TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT

    [
      {
        "@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json", 
        "about": [
          {
            "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/0306", 
            "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
            "name": "Physical Chemistry (incl. Structural)", 
            "type": "DefinedTerm"
          }, 
          {
            "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/03", 
            "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
            "name": "Chemical Sciences", 
            "type": "DefinedTerm"
          }
        ], 
        "author": [
          {
            "affiliation": {
              "alternateName": "Astronomical Institute", 
              "id": "https://www.grid.ac/institutes/grid.493212.f", 
              "name": [
                "Astronomical Institute, Slovak Academy of Sciences, 059 60, Tatransk\u00e1 Lomnica, Slovakia"
              ], 
              "type": "Organization"
            }, 
            "familyName": "Kundra", 
            "givenName": "E.", 
            "id": "sg:person.0711142555.55", 
            "sameAs": [
              "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0711142555.55"
            ], 
            "type": "Person"
          }, 
          {
            "affiliation": {
              "alternateName": "Astronomical Institute", 
              "id": "https://www.grid.ac/institutes/grid.493212.f", 
              "name": [
                "Astronomical Institute, Slovak Academy of Sciences, 059 60, Tatransk\u00e1 Lomnica, Slovakia"
              ], 
              "type": "Organization"
            }, 
            "familyName": "Hric", 
            "givenName": "L.", 
            "id": "sg:person.01001625021.10", 
            "sameAs": [
              "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01001625021.10"
            ], 
            "type": "Person"
          }
        ], 
        "citation": [
          {
            "id": "https://doi.org/10.1111/j.1365-2966.2005.09101.x", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1004979384"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1111/j.1365-2966.2005.09101.x", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1004979384"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "sg:pub.10.1007/bf00653901", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1010089521", 
              "https://doi.org/10.1007/bf00653901"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1046/j.1365-8711.1998.01607.x", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1011459671"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "sg:pub.10.1007/978-94-009-5319-2_2", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1022780518", 
              "https://doi.org/10.1007/978-94-009-5319-2_2"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "sg:pub.10.1007/978-94-009-5319-2_2", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1022780518", 
              "https://doi.org/10.1007/978-94-009-5319-2_2"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1086/520923", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1036563605"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1111/j.1365-2966.2006.10073.x", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1039828008"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "sg:pub.10.1007/978-94-017-0403-8_29", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1047805309", 
              "https://doi.org/10.1007/978-94-017-0403-8_29"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1051/0004-6361:20000410", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1056926355"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1086/113619", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1058452198"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1086/117610", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1058456189"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1086/128946", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1058466215"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1086/318065", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1058622288"
            ], 
            "type": "CreativeWork"
          }, 
          {
            "id": "https://doi.org/10.1086/378577", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1058671610"
            ], 
            "type": "CreativeWork"
          }
        ], 
        "datePublished": "2011-01", 
        "datePublishedReg": "2011-01-01", 
        "description": "V471 Tau was discovered as a spectroscopic binary by Wilson (General Catalogue of Stellar Radial Velocities, p. 44, 1953). It is the prototype of a post-common envelope system and a progenitor of a cataclysmic binary. The system consists of a cool red dwarf, K2 V, very probably a main sequence star and a hot white dwarf. The object was classified as a close binary with an orbital period of around 0.5 days. Moreover, on the light curve are observed light variations with a period of 191 days, which are connected with an ellipsoidal shape of the red dwarf as well as with the migration of spots on the surface of this cool component. The eclipse of the white dwarf in the binary remains 49 minutes and declines to the minimum and the increase from the minimum takes only 55 s. Such photometric behaviour hinders obtaining good eclipses. In this paper we have obtained during four years seven eclipses with high time resolution with all four contacts to reach precise times of minima. Fortunately these times of the minima show a change of trend in the (O\u2013C) diagram, and we were able to decide about the physical processes responsible for the behaviour of the (O\u2013C) diagram. We showed that this behaviour is caused by a third body in the system with an orbital period of 33.2 years, and its physical and geometrical parameters are presented. For an inclination larger than 35\u00b0 we get the mass of this body below the stable hydrogen-burning limit and thus most probably the candidate would be a brown dwarf.", 
        "genre": "research_article", 
        "id": "sg:pub.10.1007/s10509-010-0433-8", 
        "inLanguage": [
          "en"
        ], 
        "isAccessibleForFree": false, 
        "isPartOf": [
          {
            "id": "sg:journal.1026094", 
            "issn": [
              "0004-640X", 
              "1572-946X"
            ], 
            "name": "Astrophysics and Space Science", 
            "type": "Periodical"
          }, 
          {
            "issueNumber": "1", 
            "type": "PublicationIssue"
          }, 
          {
            "type": "PublicationVolume", 
            "volumeNumber": "331"
          }
        ], 
        "name": "The (O\u2013C) diagram problem of triple pre-cataclysmic system V471 Tau solved", 
        "pagination": "121-126", 
        "productId": [
          {
            "name": "readcube_id", 
            "type": "PropertyValue", 
            "value": [
              "a3398aee26a659e23cfd85699d153396063cdfe8e306531607b4757583cdc7a0"
            ]
          }, 
          {
            "name": "doi", 
            "type": "PropertyValue", 
            "value": [
              "10.1007/s10509-010-0433-8"
            ]
          }, 
          {
            "name": "dimensions_id", 
            "type": "PropertyValue", 
            "value": [
              "pub.1034264964"
            ]
          }
        ], 
        "sameAs": [
          "https://doi.org/10.1007/s10509-010-0433-8", 
          "https://app.dimensions.ai/details/publication/pub.1034264964"
        ], 
        "sdDataset": "articles", 
        "sdDatePublished": "2019-04-11T10:49", 
        "sdLicense": "https://scigraph.springernature.com/explorer/license/", 
        "sdPublisher": {
          "name": "Springer Nature - SN SciGraph project", 
          "type": "Organization"
        }, 
        "sdSource": "s3://com-uberresearch-data-dimensions-target-20181106-alternative/cleanup/v134/2549eaecd7973599484d7c17b260dba0a4ecb94b/merge/v9/a6c9fde33151104705d4d7ff012ea9563521a3ce/jats-lookup/v90/0000000350_0000000350/records_77554_00000000.jsonl", 
        "type": "ScholarlyArticle", 
        "url": "http://link.springer.com/10.1007/s10509-010-0433-8"
      }
    ]
     

    Download the RDF metadata as:  json-ld nt turtle xml License info

    HOW TO GET THIS DATA PROGRAMMATICALLY:

    JSON-LD is a popular format for linked data which is fully compatible with JSON.

    curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/s10509-010-0433-8'

    N-Triples is a line-based linked data format ideal for batch operations.

    curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/s10509-010-0433-8'

    Turtle is a human-readable linked data format.

    curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/s10509-010-0433-8'

    RDF/XML is a standard XML format for linked data.

    curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s10509-010-0433-8'


     

    This table displays all metadata directly associated to this object as RDF triples.

    110 TRIPLES      21 PREDICATES      40 URIs      19 LITERALS      7 BLANK NODES

    Subject Predicate Object
    1 sg:pub.10.1007/s10509-010-0433-8 schema:about anzsrc-for:03
    2 anzsrc-for:0306
    3 schema:author N70d63966b6ff48678e1afbe7d04fddf7
    4 schema:citation sg:pub.10.1007/978-94-009-5319-2_2
    5 sg:pub.10.1007/978-94-017-0403-8_29
    6 sg:pub.10.1007/bf00653901
    7 https://doi.org/10.1046/j.1365-8711.1998.01607.x
    8 https://doi.org/10.1051/0004-6361:20000410
    9 https://doi.org/10.1086/113619
    10 https://doi.org/10.1086/117610
    11 https://doi.org/10.1086/128946
    12 https://doi.org/10.1086/318065
    13 https://doi.org/10.1086/378577
    14 https://doi.org/10.1086/520923
    15 https://doi.org/10.1111/j.1365-2966.2005.09101.x
    16 https://doi.org/10.1111/j.1365-2966.2006.10073.x
    17 schema:datePublished 2011-01
    18 schema:datePublishedReg 2011-01-01
    19 schema:description V471 Tau was discovered as a spectroscopic binary by Wilson (General Catalogue of Stellar Radial Velocities, p. 44, 1953). It is the prototype of a post-common envelope system and a progenitor of a cataclysmic binary. The system consists of a cool red dwarf, K2 V, very probably a main sequence star and a hot white dwarf. The object was classified as a close binary with an orbital period of around 0.5 days. Moreover, on the light curve are observed light variations with a period of 191 days, which are connected with an ellipsoidal shape of the red dwarf as well as with the migration of spots on the surface of this cool component. The eclipse of the white dwarf in the binary remains 49 minutes and declines to the minimum and the increase from the minimum takes only 55 s. Such photometric behaviour hinders obtaining good eclipses. In this paper we have obtained during four years seven eclipses with high time resolution with all four contacts to reach precise times of minima. Fortunately these times of the minima show a change of trend in the (O–C) diagram, and we were able to decide about the physical processes responsible for the behaviour of the (O–C) diagram. We showed that this behaviour is caused by a third body in the system with an orbital period of 33.2 years, and its physical and geometrical parameters are presented. For an inclination larger than 35° we get the mass of this body below the stable hydrogen-burning limit and thus most probably the candidate would be a brown dwarf.
    20 schema:genre research_article
    21 schema:inLanguage en
    22 schema:isAccessibleForFree false
    23 schema:isPartOf N31401fa6041a4591b6722119f5d326b2
    24 Naf735d522eda46a49f011bbae4548d6e
    25 sg:journal.1026094
    26 schema:name The (O–C) diagram problem of triple pre-cataclysmic system V471 Tau solved
    27 schema:pagination 121-126
    28 schema:productId N46591f14791c4fd18b82f2a3270d7790
    29 N61307a72477a409ab257a0a4383fe847
    30 Na109d0fcdc9244df9bf2a99e03d16466
    31 schema:sameAs https://app.dimensions.ai/details/publication/pub.1034264964
    32 https://doi.org/10.1007/s10509-010-0433-8
    33 schema:sdDatePublished 2019-04-11T10:49
    34 schema:sdLicense https://scigraph.springernature.com/explorer/license/
    35 schema:sdPublisher N5a3749b651e0415583c1145086641ae5
    36 schema:url http://link.springer.com/10.1007/s10509-010-0433-8
    37 sgo:license sg:explorer/license/
    38 sgo:sdDataset articles
    39 rdf:type schema:ScholarlyArticle
    40 N31401fa6041a4591b6722119f5d326b2 schema:volumeNumber 331
    41 rdf:type schema:PublicationVolume
    42 N46591f14791c4fd18b82f2a3270d7790 schema:name doi
    43 schema:value 10.1007/s10509-010-0433-8
    44 rdf:type schema:PropertyValue
    45 N5a3749b651e0415583c1145086641ae5 schema:name Springer Nature - SN SciGraph project
    46 rdf:type schema:Organization
    47 N61307a72477a409ab257a0a4383fe847 schema:name readcube_id
    48 schema:value a3398aee26a659e23cfd85699d153396063cdfe8e306531607b4757583cdc7a0
    49 rdf:type schema:PropertyValue
    50 N70d63966b6ff48678e1afbe7d04fddf7 rdf:first sg:person.0711142555.55
    51 rdf:rest Nbfa4b44c05fc491ab89505bb4efad4f3
    52 Na109d0fcdc9244df9bf2a99e03d16466 schema:name dimensions_id
    53 schema:value pub.1034264964
    54 rdf:type schema:PropertyValue
    55 Naf735d522eda46a49f011bbae4548d6e schema:issueNumber 1
    56 rdf:type schema:PublicationIssue
    57 Nbfa4b44c05fc491ab89505bb4efad4f3 rdf:first sg:person.01001625021.10
    58 rdf:rest rdf:nil
    59 anzsrc-for:03 schema:inDefinedTermSet anzsrc-for:
    60 schema:name Chemical Sciences
    61 rdf:type schema:DefinedTerm
    62 anzsrc-for:0306 schema:inDefinedTermSet anzsrc-for:
    63 schema:name Physical Chemistry (incl. Structural)
    64 rdf:type schema:DefinedTerm
    65 sg:journal.1026094 schema:issn 0004-640X
    66 1572-946X
    67 schema:name Astrophysics and Space Science
    68 rdf:type schema:Periodical
    69 sg:person.01001625021.10 schema:affiliation https://www.grid.ac/institutes/grid.493212.f
    70 schema:familyName Hric
    71 schema:givenName L.
    72 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01001625021.10
    73 rdf:type schema:Person
    74 sg:person.0711142555.55 schema:affiliation https://www.grid.ac/institutes/grid.493212.f
    75 schema:familyName Kundra
    76 schema:givenName E.
    77 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0711142555.55
    78 rdf:type schema:Person
    79 sg:pub.10.1007/978-94-009-5319-2_2 schema:sameAs https://app.dimensions.ai/details/publication/pub.1022780518
    80 https://doi.org/10.1007/978-94-009-5319-2_2
    81 rdf:type schema:CreativeWork
    82 sg:pub.10.1007/978-94-017-0403-8_29 schema:sameAs https://app.dimensions.ai/details/publication/pub.1047805309
    83 https://doi.org/10.1007/978-94-017-0403-8_29
    84 rdf:type schema:CreativeWork
    85 sg:pub.10.1007/bf00653901 schema:sameAs https://app.dimensions.ai/details/publication/pub.1010089521
    86 https://doi.org/10.1007/bf00653901
    87 rdf:type schema:CreativeWork
    88 https://doi.org/10.1046/j.1365-8711.1998.01607.x schema:sameAs https://app.dimensions.ai/details/publication/pub.1011459671
    89 rdf:type schema:CreativeWork
    90 https://doi.org/10.1051/0004-6361:20000410 schema:sameAs https://app.dimensions.ai/details/publication/pub.1056926355
    91 rdf:type schema:CreativeWork
    92 https://doi.org/10.1086/113619 schema:sameAs https://app.dimensions.ai/details/publication/pub.1058452198
    93 rdf:type schema:CreativeWork
    94 https://doi.org/10.1086/117610 schema:sameAs https://app.dimensions.ai/details/publication/pub.1058456189
    95 rdf:type schema:CreativeWork
    96 https://doi.org/10.1086/128946 schema:sameAs https://app.dimensions.ai/details/publication/pub.1058466215
    97 rdf:type schema:CreativeWork
    98 https://doi.org/10.1086/318065 schema:sameAs https://app.dimensions.ai/details/publication/pub.1058622288
    99 rdf:type schema:CreativeWork
    100 https://doi.org/10.1086/378577 schema:sameAs https://app.dimensions.ai/details/publication/pub.1058671610
    101 rdf:type schema:CreativeWork
    102 https://doi.org/10.1086/520923 schema:sameAs https://app.dimensions.ai/details/publication/pub.1036563605
    103 rdf:type schema:CreativeWork
    104 https://doi.org/10.1111/j.1365-2966.2005.09101.x schema:sameAs https://app.dimensions.ai/details/publication/pub.1004979384
    105 rdf:type schema:CreativeWork
    106 https://doi.org/10.1111/j.1365-2966.2006.10073.x schema:sameAs https://app.dimensions.ai/details/publication/pub.1039828008
    107 rdf:type schema:CreativeWork
    108 https://www.grid.ac/institutes/grid.493212.f schema:alternateName Astronomical Institute
    109 schema:name Astronomical Institute, Slovak Academy of Sciences, 059 60, Tatranská Lomnica, Slovakia
    110 rdf:type schema:Organization
     




    Preview window. Press ESC to close (or click here)


    ...