Schuh, Sonja

[["dc.bibliographiccitation.firstpage","667"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","674"],["dc.bibliographiccitation.volume","440"],["dc.contributor.author","O'Toole, S. J."],["dc.contributor.author","Heber, Ulrich"],["dc.contributor.author","Jeffery, C. S."],["dc.contributor.author","Dreizler, Stefan"],["dc.contributor.author","Schuh, S. L."],["dc.contributor.author","Woolf, Vincent M."],["dc.contributor.author","Falter, S."],["dc.contributor.author","Green, Elizabeth M."],["dc.contributor.author","For, B. Q."],["dc.contributor.author","Hyde, E. A."],["dc.contributor.author","Kjeldsen, Hans"],["dc.contributor.author","Mauch, T."],["dc.contributor.author","White, B. A."],["dc.date.accessioned","2018-11-07T10:55:55Z"],["dc.date.available","2018-11-07T10:55:55Z"],["dc.date.issued","2005"],["dc.description.abstract","We present results and analysis for the 2m spectroscopic part of the MultiSite Spectroscopic Telescope (MSST) campaign undertaken in May/June 2002. The goal of the project was to observe the pulsating subdwarf B star PG1605+072 simultaneously in velocity and photometry and to resolve as many of the > 50 known modes as possible, which will allow a detailed asteroseismological analysis. We have obtained over 150 h of spectroscopy, leading to an unprecedented noise level of only 207 m s(-1). We report here the detection of 20 frequencies in velocity, with two more likely just below our detection threshold. In particular, we detect 6 linear combinations, making PG1605+072 only the second star known to show such frequencies in velocity. We investigate the phases of these combinations and their parent modes and find relationships between them that cannot be easily understood based on current theory. These observations, when combined with our simultaneous photometry, should allow asteroseismology of this most complicated of sdB pulsators."],["dc.identifier.doi","10.1051/0004-6361:20053352"],["dc.identifier.fs","38258"],["dc.identifier.isi","000231547400033"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9866"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49894"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0004-6361"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","The MultiSite Spectroscopic Telescope campaign: 2 m spectroscopy of the V361 Hya variable PG1605+072"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","289"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","296"],["dc.bibliographiccitation.volume","401"],["dc.contributor.author","Falter, S."],["dc.contributor.author","Heber, U."],["dc.contributor.author","Dreizler, S."],["dc.contributor.author","Schuh, S. L."],["dc.contributor.author","Cordes, O."],["dc.contributor.author","Edelmann, H."],["dc.date.accessioned","2019-07-09T11:53:30Z"],["dc.date.available","2019-07-09T11:53:30Z"],["dc.date.issued","2003"],["dc.description.abstract","We present time-series spectroscopy and multi-band photometry of the sdBV PG 1605+072 carried out simultaneously at the Calar Alto 2.2-m and 3.5-m telescopes. The periodogram analysis of the radial velocity curves reveals three frequencies at 2.078, 2.756, and 1.985 mHz for Hβ and at 2.076, 2.753, and 1.978 mHz for Hγ. The corresponding radial velocity amplitudes are 12.7, 8.0, and 7.9 km s−1 for Hβ and 14.3, 6.5, and 7.2 km s−1 for Hγ. Furthermore, we found five frequencies that are present in all wavelength bands of the BUSCA photometer. The frequencies detected in the radial velocity curves are recovered by the photometric measurements. Moreover, additional frequencies were present in the periodograms which could not be identified in all four bands simultaneously. The comparison of the amplitudes presented here with previous results from radial velocity and photometric observations of PG 1605+072 shows a significant change or even switch in the power of the modes within short time scales, i.e. about one year. No changes in frequency were registered and the phases of the modes show no wavelength dependency within our multi-band photometry."],["dc.identifier.doi","10.1051/0004-6361:20030122"],["dc.identifier.fs","20297"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7682"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60436"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.title","Simultaneous time-series spectroscopy and multi-band photometry of the sdBV PG 1605+072"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]