J/ApJ/709/1042ivo://CDS.VizieR/J/ApJ/709/1042doi:10.26093/cds/vizier.17091042CDSHrivnak B.J.Lu W.Maupin R.E.Spitzbart B.D.2024-10-25T20:13:40Z2012-04-02T12:09:32ZCDS support team

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

cds-question@unistra.frinfrared-photometryvisible-astronomyphotometryeffective-temperatureplanetary-nebulaegiant-starscarbon-starsWe have carried out long-term (14 years) V and R photometric monitoring of 12 carbon-rich proto-planetary nebulae. The light and color curves display variability in all of them. The light curves are complex and suggest multiple periods, changing periods, and/or changing amplitudes, which are attributed to pulsation. A dominant period has been determined for each and found to be in the range of ~150 days for the coolest (G8) to 35-40 days for the warmest (F3). A clear, linear inverse relationship has been found in the sample between the pulsation period and the effective temperature and also an inverse relationship between the amplitude of light variation and the effective temperature. These are consistent with the expectation for a pulsating post-asymptotic giant branch (post-AGB) star evolving toward higher temperature at constant luminosity. The published spectral energy distributions and mid-infrared images show these objects to have cool (200K), detached dust shells and published models imply that intensive mass loss ended 400-2000 years ago.2010ApJ...709.1042Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/709/1042CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/254 : The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)J/A+A/369/178 : Effective temperatures of carbon-rich stars (Bergeat+, 2001)J/PAZh/26/705 : UBV observations of post-AGB supergiants (Arkhipova+, 2000)J/ApJS/122/221 : A mid-IR survey of Proto-PNs Candidates (Meixner+, 1999)J/A+AS/126/479 : NIR photometry of IRAS sources. III (Garcia-Lario+, 1997)J/A+A/267/515 : Very cold C-rich circumstellar envelopes (Omont+ 1993)http://www.iac.es/proyecto/apn4/pages/proceedings.php : Asymmetrical PNe IVhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/709/1042https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/709/1042http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/709/1042https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/709/1042https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/709/1042http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/709/1042GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/709/1042/ppne (List of C-rich proto-PNe observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/709/1042/ppne?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/709/1042/ppne?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/709/1042/ppne?GETtext/xml+votable180.050000true36.67416762.3561110.0055555555555555566/1229 3649 13297 13917 14256 14323 14453 22392 22425 23695 24079 488223.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/709/1042?format=asciiOpticalInfrareddefaultJ/ApJ/709/1042/ppneList of C-rich proto-PNe observed2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (generally IRAS)meta.id;meta.maincharprimaryn_Name[cd] Non IRAS-PSC source (1)meta.notecharGSCGSC identification (FFFFF-NNNNN) (2)meta.idchar2MASS2MASS identification (JHHMMSSss+DDMMSSs)meta.idcharRAJ20002MASS hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ20002MASS degree of declination (J2000)pos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatVmagV-band magnitudemagphot.mag;em.opt.VfloatONameOther identifications (3)meta.idcharSimbadSimbad column added by the CDScharC/O? C/O valuephys.abundfloatnullableC2[Y] Detection of C_2_ absorptionmeta.notecharC3[Y/N]? Detection of C_3_ absorptionmeta.notecharAIBs[Y] Aromatic infrared bands (AIBs) in emission at 3.3, 6.2, 7.7, 8.6, and 11.3ummeta.notecharf_AIBs[b] b: Weak plateau featuresmeta.codechar21um[Y] Broad emission feature at 20.1ummeta.notechar30um[Y] Very broad emission feature around 30ummeta.notecharSpTMK spectral typesrc.spTypecharJ/ApJ/709/1042/table3Magnitudes of the PPNs on the standard BVRI system at the time of the observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (generally IRAS)meta.id;meta.maincharVmag? V-band magnitudemagphot.mag;em.opt.VfloatnullableB-V? B-V color indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-R? V-R color indexmagphot.color;em.opt.V;em.opt.RfloatnullableR-I? R-I color indexmagphot.color;em.opt.R;em.opt.IfloatnullableV-I? V-I color indexmagphot.color;em.opt.V;em.opt.IfloatnullableDateObservation datetime.epoch;obsnullableRef? Reference (1)meta.ref;pos.frameintnullableJ/ApJ/709/1042/table8Results of the period and light curve study of carbon-rich PPNs (listed in order of SpT)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (generally IRAS)meta.id;meta.maincharm_Name[NS] Component (for AFGL 2688)meta.code.multipcharLCPlot of the light curvemeta.ref.urlcharl_Per[~] Limit flag on Permeta.code.errorcharPer? Perioddtime.periodintnullableu_Per[:] Uncertainty flag on Permeta.code.errorcharn_Per[fh] Notes on Per (4)meta.notecharSpTMK spectral type (5)src.spTypecharn_SpT[g] Note on SpT (4)meta.notecharTeffEffective temperature (or lower limit if Teff2) (6)Kphys.temperature.effectiveintTeff2? Upper limit on TeffKphys.temperature.effective;stat.maxintnullablef_Teff2[e] Flag on Teff2 (4)meta.codechardVmagMaximum brightness in V-band (7)magphot.mag;arith.difffloatu_dVmag[:] Uncertainty flag on dVmagmeta.code.errorchard(V-R)Maximum color range in (V-R) (7)magphot.mag;arith.difffloatu_d(V-R)[:] Uncertainty flag on d(V-R)meta.code.errorchardTeff? Corresponding maximum temperature change (7)Kphys.temperatureintnullableCommCommentsmeta.notecharJ/ApJ/709/1042/table5Differential standard magnitudes and colors for the 13 sourcesHJD-VR? (V-R) Heliocentric Julian Datedtime.epochdoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (generally IRAS)meta.id;meta.maincharm_Name[NS] Component (for AFGL 2688)meta.code.multipcharHJD-VV band Heliocentric Julian Datedtime.epochdoubledVmagDifferential magnitude in V bandmagphot.mag;arith.difffloatHJD-R? R band Heliocentric Julian Datedtime.epochdoublenullabledRmag? Differential Magnitude in R bandmagphot.mag;arith.difffloatnullabled(V-R)? Differential Color Index (V-R)magphot.mag;arith.difffloatnullable