J/ApJS/262/44ivo://CDS.VizieR/J/ApJS/262/44doi:10.26093/cds/vizier.22620044CDSCarrasco V.M.S.Vaquero J.M.2023-09-27T06:43:51Z2022-12-19T08:40:25ZCDS support team

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

cds-question@unistra.frthe-sunThe Astronomical Observatory of the University of Coimbra (Portugal) published a catalog with solar observations such as sunspots, faculae, prominences, and filaments for the period 1929-1944. In previous works, a machine-readable version on sunspot observations made in Coimbra was published. Here we extend that work and present a digital version of the facula, prominence, and filament observations made in that observatory. We have applied a quality control to the catalog, obtaining that the percentage of problematic or suspicious data found is lower than 1% of the total number of observations. In addition, we show an analysis of this catalog, as well as some comparisons between solar indices calculated from Coimbra data and those from other sources. Historical observations of faculae, prominences, and filaments are not as common as sunspot records, and in addition, few historical series of these solar features are available in digital version. For that reason, the catalog of solar observations published by the Coimbra Observatory is of enormous value. The recovery, publication, and availability of this catalog provide the scientific community with a valuable data set of solar characteristics that will help us to study in more detail the past solar magnetic field and long-term solar activity.2022ApJS..262...44Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/262/44CatalogResearchIsServedByTAP 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/ApJ/721/901 : Solar quiescent filament channels (Su+, 2010)J/A+A/584/A73 : Sunspot areas and tilt angles (Senthamizh Pavai+, 2015)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/628/A103 : Mt Wilson sunspot magnetic field measurements (Pevtsov+, 2019)J/ApJ/891/79 : Single storms and the related ICMEs from 1998-2011 (Li+, 2020)J/ApJ/897/L10 : Disturbance storm time index (Hayakawa+, 2020)J/A+A/639/A88 : Plage area composite series (Chatzistergos+, 2020)J/A+A/640/A78 : Sunspot area catalogue revisited (1874-2019) (Mandal+, 2020)J/A+A/647/A60 : Prominence mean magnetic fields in cycle XXI (Bommier+, 2021)J/A+A/649/A141 : 1000-year sunspot series (Usoskin+, 2021)J/A+A/652/A56 : Hemispheric Sunspot Numbers 1874-2020 (Veronig+, 2021)J/ApJS/256/38 : SCO daily sunspot areas (1886-1940) (Carrasco+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/262/44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/262/44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/262/44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/262/44https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/262/44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/262/44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/262/44/table1The Astronomical Observatory of the University of Coimbra (COI) catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeFeature type (1)src.classcharObs[1929/1944] Observation yeartime.epochindexedCode? Code assigned (2)meta.codecharNum[1/233]? Number of elements in facular groupmeta.numberintnullableQuad[1/13]? Quandrant code (3)meta.codeintnullableLimLat1[-89.5/89.5]? First Latitude limit (4)degpos.earth.latdoublenullableLimLat2[-89/90]? Second Latitude limit (4)degpos.earth.latdoublenullableLat[-73/73]? COI Latitude (5)degpos.frameintnullableLimLon1[-120.4/180]? First Longitue limit (6)degpos.earth.londoublenullableLimLon2[-180/162]? Second Longitue limit (6)degpos.earth.londoublenullableLon[-87/88]? COI Longitude (5)degpos.frameintnullableAread[58/41382]? Solar disc area occupied by faculaephys.areaintnullableAreah[-9990/73328]? Solar hemisphere area occupied by faculae (7)phys.areadoublenullableBaseArc[0/9534]? Base arc sizedegphys.angSizedoublenullableHeightR[0/1.5]? Height relative in solar radiisolRadphys.sizedoublenullableHeightKM[1.4/264.1]? Height in thousands of kilometersMmphys.sizedoublenullableHeight[6/807]? Height in arcsecondsarcsecphys.sizeintnullableArea[0/6592]? Area occupied by prominences (7)phys.areaintnullableExtCent[0/236]? Filament extent in 0.01 solar radiicsolRadphys.size.diameterintnullableNoteOther information of interestmeta.notechar