J/ApJ/877/75ivo://CDS.VizieR/J/ApJ/877/75doi:10.26093/cds/vizier.18770075CDSPi Q.-F.Zhang L.-Y.Bi S.-L.Han X.L.Lu H.-P.Yue Q.Long L.Yan Y.2021-03-29T12:26:21Z2020-12-15T09:45:53ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomyWide-band photometrystellar-flaresstellar-spectral-typesUsing 27 sets of new multiband photometry light curves acquired from our long-term photometric campaign carried out in the last 5yr and high-resolution spectroscopic data from seven nights, we analyzed the physical mechanisms of period variation, starspot cycle, optical flares, and chromospheric activities of the eclipsing binary DV Psc. Our updated O-C diagram covering a period of approximately 20yr shows an oscillation in its orbital period. This variations might be caused by a third body with an orbital period of 14.58+/-0.28yr. There are two active regions of starspots at longitude belts of about 90{deg} and 270{deg}. We obtained its starspot cycles with periods of 3.60+/-0.03yr and 3.42+/-0.02yr at about 90{deg} and 270{deg}, respectively. Moreover, the magnitude difference of Max.I-Max.II shows cyclic oscillation of 5.15+/-0.01yr. During our decade long photometric campaign, we observed DV Psc a total of 326.4hr, detected 18 outbursts (12 of them have never been reported) with flare energies in the range of (6.62-1106.85)x10^24^J. The slope of the relationship between the phase of the max flare and spots is 0.842 +/-0.083, implying a correlation between spots and flares. We discovered evidence for a correlation between the rotation period and the activity cycle for the short-period eclipsing binaries. Our high-resolution spectroscopic observations of DV Psc show obvious emissions above continuum in the H{alpha} line and small self-reversal emissions of the CaII IRT lines.2019ApJ...877...75Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/877/75CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/108/268 : HK survey emission-line candidates positions (Beers+ 1994)J/A+A/285/459 : RZ Dra (Kreiner+ 1994)J/A+AS/146/103 : CaII H&K to CaII IRT echelle spectra (Montes+, 2000)J/MNRAS/328/45 : Late-type stars members of young groups (Montes+, 2001)J/A+A/393/225 : Starspot cycles of 6 young solar analogues (Messina+, 2002)J/A+A/424/993 : BH Vir spectra and photometry (Kjurkchieva+, 2004)J/AJ/131/2986 : Multiplicity of contact binaries (Pribulla+, 2006)J/MNRAS/379/1665 : XX Cep BVRI light curves (Lee+, 2007)J/A+A/465/943 : BVI and RV curves of 5 eclipsing binaries (Szalai+, 2007)J/AJ/136/594 : BS Cas BVR light curves (Yang+, 2008)J/AJ/137/3181 : HW Vir differential VR light curves (Lee+, 2009)J/MNRAS/406/2559 : BVRI light curves of GSC2314-0530 (Dimitrov+, 2010)J/AJ/139/1360 : AO Ser VR light curves (Yang+, 2010)J/AJ/142/99 : BVRI observations of TZ Boo (Christopoulou+, 2011)J/AJ/141/44 : V396 Mon BVRI light curves (Liu+, 2011)J/PASP/123/895 : EH Cnc RV light curves (Yang+, 2011)J/AJ/144/149 : CCD photom. of the W UMa type TY Boo (Christopoulou+, 2012)J/other/NewA/17.347 : Eclipsing times of BE Cep (Dai+, 2012)J/AJ/143/122 : VR light curves of CK Boo (Yang+, 2012)J/AJ/145/100 : Differential BVR light curves of EP And (Lee+, 2013)J/AJ/145/60 : Light curves of GN Boo, BL Leo, and V1918 Cyg (Yang+, 2013)J/AJ/146/35 : BVR light curves of DZ Psc (Yang+, 2013)J/AJ/145/39 : Differential BV(RI)c light curves of PY Vir (Zhu+, 2013)J/AJ/147/98 : Times of minimum light for EQ Tau (Li+, 2014)J/AJ/147/50 : Differential BVRI light curves of DV Psc (Pi+, 2014)J/MNRAS/442/2620 : VRI light curve of 5 eclipsing binaries (Zhang+, 2014)J/other/NewA/36.50 : V873 Per BVR light curves (Kriwattanawong+, 2015)J/other/NewA/41.17 : Time of minima of BX Peg (Li+, 2015)J/AJ/150/9 : VRI light curves of GSC 1537-1557 (Xiang+, 2015)J/AJ/149/62 : BVR light curves of V508 Oph (Xiang+, 2015)J/other/NewA/37.48 : ZZ Cyg times of minima (Yang+, 2015)J/other/NewA/48.58 : V1044 Her VR differential photometry (Lu+, 2016)J/AJ/153/137 : New NSVS 14256825 eclipse times (Nasiroglu+, 2017)J/AJ/154/260 : 3 short-period eclipsing binaries BVRI photom. (Pi+, 2017)J/ApJ/835/251 : RVs and BVIc LCs of the EB* CU Cnc (Wilson+, 2017)J/other/NewA/55.13 : UY UMa and EF Boo compiled time of minima (Yu+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/877/75https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/877/75http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/877/75https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/877/75https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/877/75http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/877/75GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/877/75/table13 (All known short-period eclipsing binaries system with cycles)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/877/75/table13?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/877/75/table13?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/877/75/table13?GETtext/xml+votable180.050000true239.2061222.26710830.0055555555555555566/311 454 474 739 928 1020 1163 1293 1339 1369 1704 1726 1933 2119 2393 2452 2459 2488 2560 2939 2941 3029 3444 3636 3703 3707 3722 3849 3873 4028 4146 4254 4279 4365 4427 4589 4698 4719 4790 4915 5079 5895 6340 6550 6898 7273 7281 7321 7637 7830 7875 8076 8124 8357 8466 8656 8716 9044 9074 9107 9167 9472 9529 9566 9628 9780 9890 9922 9951 10261 10326 10373 10474 10562 10707 10775 10809 11084 11100 11543 11650 11657 11941 12276 12325 12326 12405 12493 12792 12879 13032 13110 13123 13181 13202 13247 13263 13269 13339 13535 13618 13699 13772 13794 13822 13933 13947 14179 14256 14268 14331 14431 14441 14517 14619 14666 14698 14739 14798 14801 14803 14895 15012 15036 15037 15179 15189 15291 15330 15835 15876 16046 16058 16145 16186 16294 18309 18889 18902 19346 19448 19485 19598 19698 19914 19985 19991 20066 20422 21806 21949 22138 22241 22680 22902 23191 23857 24378 24487 25666 25835 25845 25991 26020 26112 27116 27250 27481 27609 28105 28129 28450 29217 29957 30168 30237 30329 30491 30565 30617 31432 31781 31843 31950 31972 32308 32390 32521 32694 33287 34026 35422 36129 36805 36866 37022 37252 40427 41667 43947 44981 47540 48833 48874 48974https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/877/75?format=asciiOpticalInfrareddefaultJ/ApJ/877/75/table2BVRI photometric data of DV PscrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation date codemeta.code;time.epochcharHJD-B? Heliocentric Julian Date of B band observationdtime.epochdoublenullableDelBmag[-1.3/-0.12]? Differential B band magnitudemagphot.mag;arith.difffloatnullableHJD-V? Heliocentric Julian Date of V band observationdtime.epochdoublenullableDelVmag[-0.91/0.83]? Differential V band magnitudemagphot.mag;arith.difffloatnullableHJD-R? Heliocentric Julian Date of R band observationdtime.epochdoublenullableDelRmag[-1.1/-0.4]? Differential R band magnitudemagphot.mag;arith.difffloatnullableHJD-I? Heliocentric Julian Date of I band observationdtime.epochdoublenullableDelImag[-1.3/-0.8]? Differential I band magnitudemagphot.mag;arith.difffloatnullableJ/ApJ/877/75/table9Flares detected in DV Psc and their parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT date of observationtime.epoch;obsnullableHJDmax[7647.7/58069.54] The time of maximum brightness; HJD-2400000dtime.epochdoublePhase[0.09/0.95] The phase according to ephemeris (1) of maximum brightnesstime.phasefloatSpot[0.14/0.98] Spot phasetime.phasefloatFiltFiltermeta.id;instr.filtercharRise[0.4/13] The rise time of the flaremintime.epochfloatDecay[1.3/15.1] The decay time of the flaremintime.intervalDur[1.8/22.3] The duration of the flaremintime.durationfloatAmp[0.014/0.74] The brightening amplitude ({Delta}m)magsrc.var.amplitudefloatEnergy[6.6/1107] Estimated energy1e+24Jphys.energyfloatTelTelescope (1)meta.id;instr.telcharf_TelFlag on Tel (2)meta.codecharJ/ApJ/877/75/table13All known short-period eclipsing binaries system with cyclesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeCycle type ("Single" or "Complex"=multi-cycles)meta.notecharIDIdentifiermeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharEBsEclipsing binary type (1)src.classcharPRot[0.06/8] Rotational perioddtime.perioddoublee_PRot[0/30]? Uncertainty in the last digits of PRotdstat.errorintnullableP1[1/181] First periodyrtime.periodfloate_P1[1/90]? Uncertainty in P1yrstat.errorfloatnullableP2[1.8/88.4]? Second period; if availableyrtime.periodfloatnullablee_P2[1/90]? Uncertainty in P2yrstat.errorfloatnullableP3[2/22.8]? Third period; if availableyrtime.periodfloatnullablee_P3[3/29]? Uncertainty in P3yrstat.errorfloatnullableP4[10.5/13]? Fourth period; if availableyrtime.periodfloatnullableP5[7.65]? Fifth period; if availableyrtime.periodfloatnullableP6[9.23]? Sixth period; if availableyrtime.periodfloatnullableMethodMethod used (2)meta.codecharRefReference code(s) (see refs.dat file)meta.notecharSimbadNameSimbad column added by the CDSmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/877/75/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibcode of the referencemeta.bib.bibcodecharAuthFirst author's name(s)meta.bib.authorcharCommCommentmeta.notechar