J/AJ/104/28ivo://CDS.VizieR/J/AJ/104/28doi:10.26093/cds/vizier.51040028CDSBersanelli M.Bouchet P.Falomo R.Tanzi E.G.2023-04-06T16:49:25Z2000-04-10T22:41:52ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsinfrared-photometryHomogeneous J, H, K, L, photometry of 42 BL Lacertae objects is presented. The observations cover a period of 3 yr with a typical time interval of 6 months.1992AJ....104...28Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/104/28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/104/28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/104/28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/104/28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/104/28https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/104/28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/104/28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/104/28/table1 (Program Objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/104/28/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/104/28/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/104/28/table1?GETtext/xml+votable180.050000true12.6725-9.4847220.0055555555555555566/4695 4770 8487 16447 17184 17516 17579 18561 18661 19157 19271 19831 20099 20624 21924 21960 21972 22363 23127 23134 23222 24608 24845 25132 26083 26769 27060 31663 31894 32261 34123 34264 35786 36058 36155 40479 40692 44247 47014 47057 47375 48023https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/104/28?format=asciiInfrareddefaultJ/AJ/104/28/table1Program ObjectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameBL Lac namecharprimaryRAJ2000Right Ascension J2000 (hours) (1)DEJ2000Declination J2000 (degrees) (1)z? RedshiftfloatnullableAvAbsorptionmagfloatX/RX or Radio flagcharCommentsFree-text commentscharr_CommentsComma-separated list of referencescharJ/AJ/104/28/table2JHKL FluxesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameBL Lac namecharprimaryJDJulian Date of observationJDdoubleJmag? Flux in filtermJyfloatnullablee_Jmag? mean error on JmJyfloatnullableHmag? Flux in filtermJyfloatnullablee_Hmag? mean error on HmJyfloatnullableKmag? Flux in filtermJyfloatnullablee_Kmag? mean error on KmJyfloatnullableLmag? Flux in filtermJyfloatnullablee_Lmag? mean error on LmJyfloatnullableJ/AJ/104/28/table3Spectral indicesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameBL Lac namecharprimaryNoteNotes (1)charSp-Index? spectral index (F proportional (nu)**(-a)floatnullableNobsNumber of observationsintamin? Minimal value of spectral indexfloatnullablee_amin? mean error on aminfloatnullableamax? Maximal value of spectral indexfloatnullablee_amax? mean error on amaxfloatnullablepcGal? Fractional estimated flux contribution of the host galaxy to the observed spectrum.%intnullableJ/AJ/104/28/refsReferencesTextAuthorscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intRefNumReference numberintBibCodeThe 19-digit bibcode, when existingchar