J/A+AS/133/197ivo://CDS.VizieR/J/A+AS/133/197CDSAdelman S.J.Pi C.-L.M.Rayle K.1999-02-02T06:58:38Z1999-02-02T07:57:54ZCDS support team

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

cds-question@unistra.frvisible-astronomymedium-band-photometrypeculiar-variable-starsDifferential Stroemgren uvby photometric observations from the Four College Automated Photoelectric Telescope are presented for the ellipsoidal variable 33 Tauri, and the magnetic Chemically Peculiar stars HD 50169 and HR 7786. We confirm that Hube's period of 2.975272 days for 33 Tau is correct. HD 50169 is a constant MCP star. HR 7786 is a large amplitude class member confirming Winzer's discovery, but its period is 8.5297 days. Its comparison star, HR 7721, a spectroscopic binary B7 V star, is variable with an amplitude of order 0.1mag, but of indeterminant period. In addition Hipparcos photometry of the comparison and check stars for early type stars whose photometry is being obtained with the FCAPT is reviewed to ascertain the stability of these stars.1998A&AS..133..197Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/133/197CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/103/1 : ubvy photometry of magnetic CP stars (Adelman+ 1994)J/A+AS/106/333 : uvby photometry of four CP stars (Adelman+ 1994)J/A+AS/111/41 : Photometry of magnetic CP stars (North+, 1995)J/A+AS/114/253 : uvby Photometry of Magnetic CP Stars (Adelman+, 1995)J/A+AS/122/249 : uvby photometry of 4 CP stars (Adelman, 1997)J/A+AS/125/65 : uvby photometry of 4 CP stars (Adelman, 1997)J/A+AS/128/245 : Photometry of chemically peculiar stars (Adelman+ 1998)J/A+A/329/579 : uvby photometry of theta CrB (Fabregat+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/133/197https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/133/197http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/133/197https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/133/197https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/133/197http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/133/197GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/133/197/table2Photometry of 33 TaurecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleu(v-c)variable-comparison (v-c) u magnitudemagphot.mag;arith.difffloatu(ch-c)check-comparison (ch-c) u magnitudemagphot.mag;arith.difffloatv(v-c)variable-comparison (v-c) v magnitudemagphot.mag;arith.difffloatv(ch-c)check-comparison (ch-c) v magnitudemagphot.mag;arith.difffloatb(v-c)variable-comparison (v-c) b magnitudemagphot.mag;arith.difffloatb(ch-c)check-comparison (ch-c) b magnitudemagphot.mag;arith.difffloaty(v-c)variable-comparison (v-c) y magnitudemagphot.mag;arith.difffloaty(ch-c)check-comparison (ch-c) y magnitudemagphot.mag;arith.difffloatJ/A+AS/133/197/table3Photometry of HD 50169recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleu(v-c)variable-comparison (v-c) u magnitudemagphot.mag;arith.difffloatu(ch-c)check-comparison (ch-c) u magnitudemagphot.mag;arith.difffloatv(v-c)variable-comparison (v-c) v magnitudemagphot.mag;arith.difffloatv(ch-c)check-comparison (ch-c) v magnitudemagphot.mag;arith.difffloatb(v-c)variable-comparison (v-c) b magnitudemagphot.mag;arith.difffloatb(ch-c)check-comparison (ch-c) b magnitudemagphot.mag;arith.difffloaty(v-c)variable-comparison (v-c) y magnitudemagphot.mag;arith.difffloaty(ch-c)check-comparison (ch-c) y magnitudemagphot.mag;arith.difffloatJ/A+AS/133/197/table4Photometry of HR 7786recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleu(v-c)variable-comparison (v-c) u magnitudemagphot.mag;arith.difffloatu(ch-c)check-comparison (ch-c) u magnitudemagphot.mag;arith.difffloatv(v-c)variable-comparison (v-c) v magnitudemagphot.mag;arith.difffloatv(ch-c)check-comparison (ch-c) v magnitudemagphot.mag;arith.difffloatb(v-c)variable-comparison (v-c) b magnitudemagphot.mag;arith.difffloatb(ch-c)check-comparison (ch-c) b magnitudemagphot.mag;arith.difffloaty(v-c)variable-comparison (v-c) y magnitudemagphot.mag;arith.difffloaty(ch-c)check-comparison (ch-c) y magnitudemagphot.mag;arith.difffloatJ/A+AS/133/197/tableaYearly means and standard deviations of tables 2, 3 & 4recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharPerPeriodtime.intervalcharu(v-c)Variable-comparison (v-c) u magnitudemagphot.mag;arith.difffloate_u(v-c)rms uncertainty on u(v-c)magstat.errorfloatu(ch-c)Check-comparison (ch-c) u magnitudemagphot.mag;arith.difffloate_u(ch-c)rms uncertainty on u(ch-c)magstat.errorfloatv(v-c)Variable-comparison (v-c) v magnitudemagphot.mag;arith.difffloate_v(v-c)rms uncertainty on v(v-c)magstat.errorfloatv(ch-c)Check-comparison (ch-c) v magnitudemagphot.mag;arith.difffloate_v(ch-c)rms uncertainty on v(ch-c)magstat.errorfloatb(v-c)Variable-comparison (v-c) b magnitudemagphot.mag;arith.difffloate_b(v-c)rms uncertainty on b(v-c)magstat.errorfloatb(ch-c)Check-comparison (ch-c) b magnitudemagphot.mag;arith.difffloate_b(ch-c)rms uncertainty on b(ch-c)magstat.errorfloaty(v-c)Variable-comparison (v-c) y magnitudemagphot.mag;arith.difffloate_y(v-c)rms uncertainty on y(v-c)magstat.errorfloaty(ch-c)Check-comparison (ch-c) y magnitudemagphot.mag;arith.difffloate_y(ch-c)rms uncertainty on y(ch-c)magstat.errorfloatJ/A+AS/133/197/table5Hipparcos Photometry for Groups of B, A, and F stars.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVarVariable star name(s)meta.id;meta.maincharVarmag? Mean magnitude of star Varmagphot.mag;stat.meanfloatnullablee_Varmag? rms uncertainty on Varmagmagstat.errorfloatnullableVarAmp? Amplitude of star Varmagsrc.var.amplitudefloatnullableVarCommComments for star Varmeta.notecharCompComparison star name(s)meta.idcharCompmag? Mean magnitude of star Compmagphot.mag;stat.meanfloatnullablee_Compmag? rms uncertainty on Compmagmagstat.errorfloatnullableCompAmp? Amplitude of star Compmagsrc.var.amplitudefloatnullableCompCommComments for star Compmeta.notecharchCheck star name(s)meta.idcharchmag? Mean magnitude of ch starmagphot.mag;stat.meanfloatnullablee_chmag? rms uncertainty on chmagmagstat.errorfloatnullablechAmp? Amplitude of ch starmagsrc.var.amplitudefloatnullablechComComments for ch starmeta.notecharocOld comparison star name (s)meta.idcharocmag? Mean magnitude of oc starmagphot.mag;stat.meanfloatnullablee_ocmag? rms uncertainty on ocmagmagstat.errorfloatnullableocAmp? Amplitude of oc starmagsrc.var.amplitudefloatnullableohOld check star name(s)meta.idcharohmag? Mean magnitude of oh starmagphot.mag;stat.meanfloatnullablee_ohmag? rms uncertainty on ohmagmagstat.errorfloatnullableohamp? Amplitude of oh starmagsrc.var.amplitudefloatnullableocCommComments for oh starmeta.notechar