J/AJ/163/180ivo://CDS.VizieR/J/AJ/163/180doi:10.26093/cds/vizier.51630180CDSHenry G.W.Fekel F.C.Williamson M.H.2025-05-22T20:09:48Z2022-05-17T07:02:09ZCDS support team

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

cds-question@unistra.frvariable-starsearly-type-starsmultiple-starsvisible-astronomyspectroscopybroad-band-photometryradial-velocityWe have used precise photometric and high-dispersion spectroscopic observations to study nine candidate {gamma} Doradus ({gamma}Dor) stars, identified as optically variable comparison stars in our photometric studies of Sun-like stars. In this paper, we confirm these nine candidates as new {gamma}Dor variables. All exhibit sinusoidal variability with amplitudes between 6 and 65mmag in Johnson B and periods from 0.28 to 1.13days. All lie in the same region of the H-R diagram as our previously confirmed {gamma}Dor stars. Of the nine systems, one is a single-lined spectroscopic binary (SB1), two are double-lined spectroscopic binaries (SB2), and the remaining six are single stars. We present orbits for the three binary systems: HD34415, HD144839, and HD182735. Their periods are 6400days or 17.5yr (adopted), 995{+/-}7days, and 1052.4{+/-}0.2days, respectively. We compare our photometric periods with those we derive for six of the nine stars observed with the Transiting Exoplanet Survey Satellite to strengthen the confirmation of these new {gamma}Dor variables. Finally, because the distribution of {gamma}Dor stars in the H-R diagram overlaps with the red edge of the {delta} Scuti ({delta}Sct) instability strip, we use our ground-based photometric results for the 73 {gamma}Dor stars confirmed with our Automatic Photoelectric Telescopes over the past two decades to look at the incidence of hybrid {delta}Sct/{gamma}Dor stars; these are highly valuable targets for asteroseismology.2022AJ....163..180Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/180CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/215 : uvby-beta Catalogue (Hauck+ 1997)I/259 : The Tycho-2 Catalogue (Hog+ 2000)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJS/99/135 : Rotation and Spectral Peculiarities (Abt+ 1995)J/A+AS/126/21 : Velocities and duplicity of F-type dwarfs (Nordstroem+ 1997)J/A+AS/137/451 : Radial velocities. IX. (Grenier+, 1999)J/MNRAS/331/45 : New periodic variables (Koen+, 2002)J/AJ/129/2026 : Differential photometry of HD 8801 (Henry+, 2005)J/AJ/129/2420 : Proper motion derivatives of binaries (Makarov+, 2005)J/A+A/455/303 : Nainital-Cape Survey. II. Null results (Joshi+, 2006)J/A+A/464/377 : HIP binaries with radial velocities (Frankowski+, 2007)J/AJ/133/1421 : BV differential photometry of 11 gammaDor stars (Henry+, 2007)J/AJ/142/39 : Sample of 114 {gamma} Doradus candidates (Henry+, 2011)J/AJ/142/185 : Properties of the eclipsing binary stars HY Vir (Lacy+, 2011)J/AJ/145/111 : Radial velocities of 5 spectroscopic binaries (Fekel+, 2013)J/A+A/556/A121 : Identification of metal-poor stars with ANN (Giridhar+, 2013)J/ApJ/855/75 : 24 years monitoring of Sun and Sun-like stars (Radick+, 2018)J/A+A/623/A72 : Binarity Hipparcos stars from Gaia pm anomaly (Kervella+,2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/180https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/180http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/180https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/180https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/180http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/180GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/180/table1 (Basic properties of the {gamma}Dor stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/180/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/180/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/180/table1?GETtext/xml+votable180.050000true16.094958951.22224970.0055555555555555566/1050 2873 15218 19063 22328 23214 24077 26106 31679https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/180?format=asciiOpticaldefaultJ/AJ/163/180/table1Basic properties of the {gamma}Dor starsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDStar HD namemeta.id.part;meta.mainintprimaryCompComponentmeta.id.part;meta.maincharBinSignle lined (SB1) or double lined (SB2)meta.code.multipcharHIPHIP star identifiermeta.idintVmag[7.14/11.2] V-band magnitude (1)magphot.mag;em.opt.VfloatB-V[0.29/0.62] B-V color (1)magphot.color;em.opt.B;em.opt.Vfloatplx[8.21/13]? Gaia DR2 parallaxmaspos.parallax.trigfloatnullablee_plx[0.04/0.2]? Error on plxmasstat.error;pos.parallaxfloatnullableVMAG[2.39/3.04]? V-band absolute magnitude (2)magphys.magAbs;em.opt.VfloatnullableSpTSpectral classsrc.spTypecharClassLuminosity classsrc.class.luminositycharvsini[3/125]? Rotational velocitykm/sphys.veloc.rotatintnullableNCoNumber of comparison measurements for this star (table10)meta.numberintnullableCoInteractive Plotmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/163/180/table3Radial velocity observations of HD 34415recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[46820/59307] Heliocentric Julian date, HJD-2400000dtime.epochdoublePhase[0.006/0.76] Fractional phasetime.phasefloatRVelA[30.3/39.3] Observed primary radial velocitykm/sspect.dopplerVelocfloatO-CA[-2.2/2.2] Primary velocity residual (1)km/sstat.fit.residual;phys.velocfloatWA[0/0.4] Weight of the primary radial velocitystat.weight;phys.velocfloatRVelB[26.6/40.8]? Observed secondary radial velocitykm/sspect.dopplerVelocfloatnullableO-CB[-1.7/1.4]? Secondary velocity residual (1)km/sstat.fit.residual;phys.velocfloatnullableWB[1]? Weight of secondary radial velocitystat.weight;phys.velocfloatnullableSourceObservatory source (2)meta.id;obscharJ/AJ/163/180/table5Radial velocity observations of HD 144839recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[54585/59349] Heliocentric Julian date, HJD-2400000dtime.epochdoublePhase[0.01/1] Fractional Phasetime.phasefloatRVel[-37.7/-22.1] Observed Radial Velocitykm/sspect.dopplerVelocfloatO-C[-2.8/4.8] Velocity residual, observed-calculatedkm/sstat.fit.residual;phys.velocfloatWeight[0.3/1] Weight of Radial Velocitystat.weight;phys.velocfloatSourceObservatory source (1)meta.id;obscharJ/AJ/163/180/table7Radial velocity observations of HD 182735recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[54367/59372] Heliocentric Julian date, HJD-2400000dtime.epochdoublePhase[0.001/1] Fractional phasetime.phasefloatRVelA[-34.5/-8.3] Observed primary radial velocitykm/sspect.dopplerVelocfloatO-CA[-4.7/6.2] Primary velocity residual (1)km/sstat.fit.residual;phys.velocfloatWA[0.06] Weight of primary radial velocitystat.weight;phys.velocfloatRVelB[-35.6/-1.8] Observed secondary radial velocitykm/sspect.dopplerVelocfloatO-CB[-1.2/1.1] Secondary velocity residual (1)km/sstat.fit.residual;phys.velocfloatWB[1] Weight of secondary radial velocitystat.weight;phys.velocfloatSourceObservatory source (2)meta.id;obscharJ/AJ/163/180/table10Individual photometric observations of 9 new {gamma}Dor StarsHDStar namemeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[54071/54649] Heliocentric Julian Date, HJD-2400000dtime.epochdoubleVarB[-0.49/0.68]? Variable-Comparison differential mag in Bmagphot.mag;em.opt.V;arith.difffloatnullableVarV[-0.46/1.5]? Variable-Comparison differential mag in Vmagphot.mag;em.opt.V;arith.difffloatnullableChkB[-2.57/-0.11]? Check-Comparison differential mag in Bmagphot.mag;em.opt.V;arith.difffloatnullableChkV[-2.45/-0.01]? Check-Comparison differential mag in Vmagphot.mag;em.opt.V;arith.difffloatnullable