Fritze-von Alvensleben, Uta

[["dc.bibliographiccitation.firstpage","648"],["dc.bibliographiccitation.journal","Proceedings of the International Astronomical Union"],["dc.bibliographiccitation.lastpage","652"],["dc.bibliographiccitation.volume","207"],["dc.contributor.author","Weilbacher, Peter M."],["dc.contributor.author","Fritze-von Alvensleben, Uta"],["dc.contributor.author","Duc, P. A."],["dc.date.accessioned","2018-11-07T10:33:05Z"],["dc.date.available","2018-11-07T10:33:05Z"],["dc.date.issued","2002"],["dc.description.abstract","We summarize the properties of tidal dwarf candidates in a sample of interacting galaxies and classify objects in tidal tails depending on their morphological appearance. New high-resolution dynamical models are needed to understand how the different structures seen in tidal tails are formed."],["dc.identifier.isi","000179397100118"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/44518"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Astronomical Society of the Pacific"],["dc.publisher.place","San Francisco"],["dc.relation.conference","207th Symposium on Extragalactic Star Clusters"],["dc.relation.eventend","2001-03-16"],["dc.relation.eventlocation","Pucón, Chile"],["dc.relation.eventstart","2001-03-12"],["dc.relation.isbn","1-58381-115-X"],["dc.relation.ispartof","Extragalactic star clusters"],["dc.title","Dwarf galaxies and star clusters in tidal tails"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Astrophysics and Space Science"],["dc.bibliographiccitation.volume","277"],["dc.contributor.author","Weilbacher, Peter M."],["dc.contributor.author","Duc, P. A."],["dc.contributor.author","Fritze-von Alvensleben, Uta"],["dc.date.accessioned","2018-11-07T09:29:38Z"],["dc.date.available","2018-11-07T09:29:38Z"],["dc.date.issued","2001"],["dc.format.extent","497"],["dc.identifier.doi","10.1023/A:1012762830407"],["dc.identifier.isi","000172167900131"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31088"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.relation.issn","0004-640X"],["dc.title","Galaxy recycling: The first sample of TDG candidates"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","819"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","834"],["dc.bibliographiccitation.volume","358"],["dc.contributor.author","Weilbacher, Peter M."],["dc.contributor.author","Duc, P. A."],["dc.contributor.author","von Alvensleben, U. F."],["dc.contributor.author","Martin, P."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T10:45:53Z"],["dc.date.available","2018-11-07T10:45:53Z"],["dc.date.issued","2000"],["dc.description.abstract","We present deep optical B,V,R images of a sample of 10 interacting systems which were selected for their resemblance to disturbed galaxies at high redshift. Photometry is performed on knots in the tidal features of the galaxies. We calculate a grid of evolutionary synthesis models with two metallicities and various burst strengths for systems consisting of some fraction of the stellar population of a progenitor spiral plus starburst. By comparison with two-color diagrams we interpret the photometric data, select from a total of about 100 condensations 36 star-forming objects that ale located in the tidal features and predict their further evolution. Being more luminous by 4 mag than normal HII regions we argue that these objects could be tidal dw,uf galaxies or their progenitors, although they differ in number and mean luminosity from the already known tidal dwarf galaxies typically located at the end of tidal tails in nearby giant interacting systems. From comparison with our models we note that all objects show young burst ages. The young stellar component formed in these tidal dwarf candidates contributes up to 18% to the total stellar mass at the end of the starburst and dominates the optical luminosity. This may result in fading by up to 2.5 mag in B during the next 200 Myrs after the burst."],["dc.identifier.isi","000088424200011"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47610"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Edp Sciences S A"],["dc.relation.issn","0004-6361"],["dc.title","Tidal dwarf candidates in a sample of interacting galaxies"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","L79"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The Astrophysical Journal Letters"],["dc.bibliographiccitation.volume","579"],["dc.contributor.author","Weilbacher, Peter M."],["dc.contributor.author","Fritze-von Alvensleben, Uta"],["dc.contributor.author","Duc, P. A."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T09:49:22Z"],["dc.date.available","2018-11-07T09:49:22Z"],["dc.date.issued","2002"],["dc.description.abstract","We present Very Large Telescope observations of the interacting system AM 1353-272. Using the FORS2 instrument, we studied the kinematics of the ionized gas along its prominent tidal tails and discovered strikingly large velocity gradients associated with seven luminous tidal knots. These kinematical structures cannot be caused by streaming motion and most likely do not result from projection effects. More probably, instabilities in the tidal tails have led to the formation of kinematically decoupled objects that could be the progenitors of self-gravitating tidal dwarf galaxies."],["dc.identifier.doi","10.1086/345318"],["dc.identifier.isi","000179063400007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35496"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0004-637X"],["dc.title","Large velocity gradients in the tidal tails of the interacting galaxy AM 1353-272 (\"The Dentist's Chair\")"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","545"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","555"],["dc.bibliographiccitation.volume","397"],["dc.contributor.author","Weilbacher, P. A."],["dc.contributor.author","Duc, P. A."],["dc.contributor.author","Fritz-von Alvensleben, U."],["dc.date.accessioned","2018-11-07T10:42:01Z"],["dc.date.available","2018-11-07T10:42:01Z"],["dc.date.issued","2003"],["dc.description.abstract","We present low-resolution spectroscopy of the ionized gas in a sample of optical knots located along the tidal features of 14 interacting galaxies previously selected as candidate Tidal Dwarf Galaxies (TDGs). From redshift measurements, we are able to confirm their physical association with the interacting system in almost all cases. For most knots, the oxygen abundance does not depend on the blue luminosity. The average, 12 + log(O/H) = 8.34 +/- 0.20, is typical of TDGs and is comparable to that measured in the outer stellar disk of spirals from which they were formed. A few knots showing low metallicities are probably pre-existing low-mass companions. The estimated Ha luminosity of the TDG candidates is higher than that of typical individual H II regions in spiral disks and is comparable to the global Ha luminosity of dwarf galaxies. We find several instances of velocity gradients with amplitudes apparently larger than 100 km s(-1) in the ionized gas in the tidal knots and discuss various possible origins for the large velocity amplitudes. While we can exclude tidal streaming motions and outflows, we cannot rule out projection effects with the current resolution. The velocity gradients could be indicative of the internal kinematic characteristic of self-gravitating objects. Higher resolution spectra are required to confirm whether the tidal knots in our sample have already acquired their dynamical independence and are therefore genuine Tidal Dwarf Galaxies."],["dc.identifier.doi","10.1051/0004-6361:20021522"],["dc.identifier.isi","000179896800016"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9806"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46683"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","E D P Sciences"],["dc.relation.issn","0004-6361"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Tidal dwarf candidates in a sample of interacting galaxies - II. Properties and kinematics of the ionized gas"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","639"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Astrophysics and Space Science"],["dc.bibliographiccitation.lastpage","642"],["dc.bibliographiccitation.volume","284"],["dc.contributor.author","Weilbacher, Peter M."],["dc.contributor.author","Fritze-von Alvensleben, Uta"],["dc.contributor.author","Duc, P. A."],["dc.date.accessioned","2018-11-07T10:42:02Z"],["dc.date.available","2018-11-07T10:42:02Z"],["dc.date.issued","2003"],["dc.description.abstract","We analyzed a sample of 44 candidates for Tidal Dwarf Galaxies (TDGs) previously selected on optical imaging with low resolution spectroscopy. Most of the TDG candidates have the same redshift as the interacting system, 3 of them very likely are low metallicity dwarf galaxies in projection, and 13 show signs of kinematics decoupled from their hosting tidal tail. Subsequent NIR photometry in combination with evolutionary synthesis modeling allows us to derive stellar masses, star formation rates, and the ratio of old to young stars within each TDG candidate."],["dc.identifier.doi","10.1023/A:1024082728293"],["dc.identifier.isi","000183320500069"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46689"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","Conference on the Appropriate Modellings of Galaxy Evolution from their Cosmological Formation to their Presently Observable Structures"],["dc.relation.eventlocation","KIEL, GERMANY"],["dc.relation.issn","0004-640X"],["dc.title","Optical and NIR investigation of a sample of tidal dwarf candidates"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]