J/AJ/156/300ivo://CDS.VizieR/J/AJ/156/300doi:10.26093/cds/vizier.51560300CDSHrivnak B.J.Van de Steene G.Van Winckel H.Lu W.Sperauskas J.2024-10-25T20:12:01Z2019-05-09T14:02:02ZCDS support team

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

cds-question@unistra.frplanetary-nebulaegiant-starsinfrared-photometryvisible-astronomybroad-band-photometryradial-velocitystellar-spectral-typeseffective-temperaturechemical-abundancesWe have obtained contemporaneous light, color, and radial velocity data for three proto-planetary nebulae (PPNe) over the years 2007 to 2015. The light and velocity curves of each show similar periods of pulsation, with photometric periods of 42 and 50 days for IRAS 17436+5003, 102 days for IRAS 18095+2704, and 35 days for IRAS 19475+3119. The light and velocity curves are complex with multiple periods and small, variable amplitudes. Nevertheless, at least over limited time intervals, we were able to identify dominant periods in the light, color, and velocity curves and compare the phasing of each. The color curves appear to peak with or slightly after the light curves while the radial velocity curves peak about a quarter of a cycle before the light curves. Similar results were found previously for two other PPNe, although for them the light and color appeared to be in phase. Thus, it appears that PPNe are brightest when smallest and hottest. These phase results differ from those found for classical Cepheid variables, where the light and velocity differ by half a cycle, and are hottest at about average size and expanding. However, they do appear to have similar phasing to the larger-amplitude pulsations seen in RV Tauri variables. Presently, few pulsation models exist for PPNe, and these do not fit the observations well, especially the longer periods observed. Model fits to these new light and velocity curves would allow masses to be determined for these post-AGB objects, and thereby provide important constraints to post-AGB stellar evolution models of low- and intermediate-mass stars.2018AJ....156..300Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/300CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/126/479 : NIR photometry of IRAS sources. III (Garcia-Lario+, 1997)J/ApJS/122/221 : A mid-IR survey of Proto-PNs Candidates (Meixner+, 1999)J/A+A/368/250 : Abundances of HDE 341617 (Arellano Ferro+, 2001)J/A+A/458/173 : Optical spectroscopy of 253 IRAS sources (Suarez+, 2006)J/PASJ/59/1127 : Abundances in 5 post-AGB candidates (Takeda+, 2007)J/ApJ/709/1042 : Variability in C-rich proto-PNe. (Hrivnak+, 2010)J/PAZh/36/281 : Variability of 3 protoplanetary nebulae (Arkhipova+, 2010)J/ApJ/766/116 : Variability in proto-PNe. II. (Hrivnak+, 2013)J/AJ/149/184 : Long-term photometry for 4 O-rich PPne (Hrivnak+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/300https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/300http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/300https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/300https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/300http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/300GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/156/300/table1 (Program objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/300/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/300/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/300/table1?GETtext/xml+votable180.050000true266.231123350.04430110.0055555555555555566/9713 14450 325433.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/156/300?format=asciiOpticalInfrareddefaultJ/AJ/156/300/table1Program objectsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS identifiermeta.id;meta.maincharVmag[7/10]? V band magnitude (1)magphot.mag;em.opt.VfloatnullableB-V[0.6/1]? B-V color index (2)magphot.color;em.opt.B;em.opt.VfloatnullableV-Rc[0.2/0.7]? V-R_C_ color indexmagphot.color;em.opt.V;em.opt.RfloatnullableSpTypeSpectral typesrc.spTypecharTeff[6500/7750] Effective temperatureKphys.temperature.effectiveintlogg[0/1.1] Surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-0.9/-0.2] Abundance ratio [Fe/H]phys.abund.Fe;arith.ratiofloat[C/O][-0.5/-0.2] Abundance ratio [C/O]phys.abundfloatRef[1/5] Reference for the spectroscopic analyse (3)meta.ref;pos.frameintn_IRAS[d] Note on IRAS (4)meta.notecharOtherIDOther identifiersmeta.idcharVCVelocity curvemeta.ref.urlcharLCLight curvesmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/AJ/156/300/table3Radial velocities for IRAS 17436+5003recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[48431.8452/57510.7276] Heliocentric Julian Date (HJD-2400000)dtime.epochdoubleRV[-60.7/9] Radial velocity (1)km/sphys.veloc;pos.heliocentricfloatSpecIDSpectrograph-detector systemmeta.id;instrcharJ/AJ/156/300/table4Radial velocities for IRAS 18095+2704SpecIDSpectrograph-detector systemmeta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[48431.8452/57510.7276] Heliocentric Julian Date (HJD-2400000)dtime.epochdoubleRV[-60.7/9] Radial velocity (1)km/sphys.veloc;pos.heliocentricfloatJ/AJ/156/300/table5Radial velocities for IRAS 19475+3119recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[48431.8452/57510.7276] Heliocentric Julian Date (HJD-2400000)dtime.epochdoubleRV[-60.7/9] Radial velocity (1)km/sphys.veloc;pos.heliocentricfloatSpecIDSpectrograph-detector systemmeta.id;instrcharJ/AJ/156/300/table6Differential standard BVR_C_ magnitudes for IRAS 17436+5003 from 2013-2015recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[56436.6855/57358.5088] Heliocentric Julian Date (HJD-2400000) (1)dtime.epochdoubleDBmag[-3.942/-1.063]? Differential Johnson B magnitude (2)magphot.mag;em.opt.B;arith.difffloatnullableDVmag[-3.441/-1.62]? Differential Johnson V magnitude (2)magphot.mag;em.opt.V;arith.difffloatnullableDRcmag[-3.203/-1.944]? Differential Cousins R_C_ magnitude (2)magphot.mag;arith.difffloatnullableJ/AJ/156/300/table7Differential standard BVR_C_ magnitudes for IRAS 18095+2704 from 2013-2015recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[56436.6855/57358.5088] Heliocentric Julian Date (HJD-2400000) (1)dtime.epochdoubleDBmag[-3.942/-1.063]? Differential Johnson B magnitude (2)magphot.mag;em.opt.B;arith.difffloatnullableDVmag[-3.441/-1.62]? Differential Johnson V magnitude (2)magphot.mag;em.opt.V;arith.difffloatnullableDRcmag[-3.203/-1.944]? Differential Cousins R_C_ magnitude (2)magphot.mag;arith.difffloatnullableJ/AJ/156/300/table8Differential standard BVR_C_ magnitudes for IRAS 19475+3119 from 2013-2015recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[56436.6855/57358.5088] Heliocentric Julian Date (HJD-2400000) (1)dtime.epochdoubleDBmag[-3.942/-1.063]? Differential Johnson B magnitude (2)magphot.mag;em.opt.B;arith.difffloatnullableDVmag[-3.441/-1.62]? Differential Johnson V magnitude (2)magphot.mag;em.opt.V;arith.difffloatnullableDRcmag[-3.203/-1.944]? Differential Cousins R_C_ magnitude (2)magphot.mag;arith.difffloatnullableJ/AJ/156/300/table9Periodogram study of the radial velocity curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS identifiermeta.id;meta.maincharSetData setmeta.id;meta.datasetcharYear1[1978/2015] First year of observationyrtime.epoch;obsintYear2[1979/2015]? Last year of observationyrtime.epoch;obsintnullableNobs[11/333] Number of observationsmeta.numberintA0[-53.96/2.28] Systemic velocity (1)km/sphys.velocfloatn_A0[d] Note on A0 (2)meta.notecharPer1[35.04/109.2]? Primary perioddtime.periodfloatnullableu_Per1[:)] Uncertainty flag on Per1 (3)meta.code.errorcharn_Per1[e] Note on Per1 (4)meta.notecharA1[1.08/5.1]? Primary amplitudekm/sphys.veloc;src.orbitalfloatnullablephi1[0.09/0.99]? Primary phase {phi}_1_ (5)time.phasefloatnullablePer2[33.3/46.6]? Secondary perioddtime.periodfloatnullableA2[1.43/2.3]? Secondary amplitudekm/sphys.veloc;src.orbitalfloatnullablephi2[0.13/0.92]? Secondary phase {phi}_2_ (5)time.phasefloatnullable