J/AN/345/30118ivo://CDS.VizieR/J/AN/345/30118doi:10.26093/cds/vizier.113480118CDSLux O.Mugrauer M.Bischoff R.2025-09-29T20:18:29Z2024-05-13T12:44:01ZCDS support team

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

cds-question@unistra.frvariable-starsemission-line-starsinfrared-photometryvisible-astronomybroad-band-photometryspectroscopyRW Aurigae is a young stellar system containing a classical T Tauri star as the primary component. It shows deep, irregular dimmings, first detected in 2010. At the University Observatory Jena, we carried out optical follow-up observations. We performed multiband (BVRI) photometry of the system with the Cassegrain-Teleskop-Kamera II and the Schmidt-Teleskop-Kamera between September 2016 and April 2019, as well as spectroscopy, using the Fibre Linked ECHelle Astronomical Spectrograph between September 2016 and April 2018. We present the apparent photometry of RW Aur, which is consistent with and complementary to photometric data from the American Association of Variable Star Observers. The V-band magnitude of RW Aur changed by up to three magnitudes during the timespan of our monitoring campaign. For the observing epochs 2016/2017 and 2017/2018 we report a decreasing brightness, while in the epoch 2018/2019 the system remained in a relatively constant bright state. In the color-magnitude diagram, we see that RW Aur lies close to a track for grey extinction. The spectra show a decreasing equivalent width of the H{alpha} emission line for decreasing brightness, whereas the equivalent width of the [OI] line increases, indicating an increased outflow activity during the obscuration. Both gives further evidence for the favored theory that the obscurations are caused by a hot dusty wind emerging from the inner disk.2024AN....34530118Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AN/345/30118CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/440/595 : RW Aur spectra (Alencar+, 2005)J/AJ/146/112 : V light curve of RW Aur (Rodriguez+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AN/345/30118https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AN/345/30118http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AN/345/30118https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AN/345/30118https://vizier.iucaa.in/viz-bin/votable?-source=J/AN/345/30118http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AN/345/30118GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapAssociated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/AN/345/301182.367228618189496e-19 4.920466254354166e-19OpticalInfrareddefaultJ/AN/345/30118/table1FLECHAS observing logrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintspShow the spectrummeta.ref.urlcharDITDetector integration timestime.intervalintFileNameName of fits file in subdirectory fitsmeta.id;meta.fitscharSNRSignal-to-noise-ratio at the peak of the H{alpha} emission linestat.snrintXAverage airmass during the observationobs.airMassfloatJDJulian date of the observationdtime.epochdoubleNDITNumber of detector integrationsmeta.numberintJ/AN/345/30118/table2Photometric datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian date of the observationdtime.epochdoubleBmag? B-band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? B-band magnitude uncertaintymagstat.error;phot.magfloatnullableVmag? V-band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? V-band magnitude uncertaintymagstat.error;phot.magfloatnullableRmag? R-band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? R-band magnitude uncertaintymagstat.error;phot.magfloatnullableImag? I-band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? I-band magnitude uncertaintymagstat.error;phot.magfloatnullable