J/ApJS/256/38ivo://CDS.VizieR/J/ApJS/256/38doi:10.26093/cds/vizier.22560038CDSCarrasco V.M.S.Munoz-Jaramillo A.Nogales J.M.Gallego M.C.,Vaquero J.M.2022-09-05T14:28:52Z2022-03-02T14:47:10ZCDS support team

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

cds-question@unistra.frthe-sunA sunspot observation program was started at the end of the 19th century at the Stonyhurst College Observatory (hereafter SCO) by Father Perry, director of the observatory at that time. A digitization of the daily sunspot area series recorded in this observatory from 1886 to 1940 (with a gap between 1889 and 1897) is provided in this work. This depicts one of the oldest sunspot area series available. A comparison of this series with contemporary area series made in other observatories shows that SCO generally recorded larger areas than those in some of the observatories of that time such as, for example, the Royal Greenwich Observatory (RGO). Furthermore, SCO published a sunspot group catalog for the period 1921-1935. We provide a machine-readable version of this catalog. We compared the SCO group number series with other sunspot data obtained from other observatories. In this case, for example, the RGO systematically recorded more groups than the SCO. We compared SCO and RGO area distribution functions obtaining the calibration constant between both data sets. We also obtained the butterfly diagram from the group latitudes recorded by SCO and compared the percentages of group types computed from the SCO catalog with those from Valencia Observatory (following the Cortie morphological classification of sunspot groups), identifying their similarities and differences.2021ApJS..256...38Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/256/38CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/138 : Sunspots catalogues, 1853-1870 (Casas+, 2013)J/A+A/390/707 : Hemispheric Sunspot Numbers 1975-2000 (Temmer+, 2002)J/A+A/447/735 : Hemispheric Sunspot Numbers 1945-2004 (Temmer+, 2006)J/A+A/584/A73 : Sunspot areas and tilt angles (Senthamizh Pavai+, 2015)J/A+A/595/A104 : Scheiner drawing sunspot areas and tilt angles (Arlt+, 2016)J/A+A/601/A106 : Sunspot on 1921-2011 (Mandal+, 2017)J/A+A/601/A109 : Monthly numbers of sunspot groups 1749-1996 (Willamo+, 2017)J/A+A/602/A69 : Group sunspot number series since 1739 (Chatzistergos+, 2017)J/A+A/615/A93 : Reconstructed decadal sunspot numbers (Wu+, 2018)J/A+A/627/A46 : Sunspot penumbra and umbral flashes models (Bose+, 2019)J/A+A/628/A103 : Mt Wilson sunspot magnetic field measurements (Pevtsov+, 2019)J/A+A/640/A78 : Sunspot area catalogue revisited (1874-2019) (Mandal+, 2020)J/A+A/649/A141 : 1000-year sunspot series (Usoskin+, 2021)J/A+A/652/A56 : Hemispheric Sunspot Numbers 1874-2020 (Veronig+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/256/38https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/256/38http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/256/38https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/256/38https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/256/38http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/256/38GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/256/38/table1Daily area values published by the Stonyhurst College Observatory (SCO) for the period 1886-1940recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs[1886/1940] Year of the observationtime.epochindexedOArea[0/2459]? Original daily area (1)phys.areadoublenullableArea[0/10000]? Daily area in millionths of solar hemispherephys.areaintnullableNotesObservation annotationsmeta.notecharJ/ApJS/256/38/table2The sunspot group catalogue published by the SCO for the period 1921-1935recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObservatory identifier (1)meta.id;instr.obstycharGroup[1/470] Sunspot group codemeta.idfloatFirst[1921/1935] Year of the first group observationtime.epochLast[1921/1935] Year of the last group observationtime.epochHLAT[-37/37.9]? Mean group heliographic latitudedegpos.framedoublenullableHLON[0.3/462.5]? Mean group heliographic longitudedegpos.framefloatnullableArea[0/26.7]? Maximum area reached by the group (2)phys.areadoublenullableRefMeasurement reference point (3)meta.refcharTypeGroup Cortie morphological classification (4)src.classcharCMerDecimal day group passed the central meridian (5)dtime.epochcharNotesExtra observational notesmeta.notechar