Fricke, Klaus J.

[["dc.bibliographiccitation.firstpage","577"],["dc.bibliographiccitation.issue","2-4"],["dc.bibliographiccitation.journal","Astrophysics and Space Science"],["dc.bibliographiccitation.lastpage","583"],["dc.bibliographiccitation.volume","276"],["dc.contributor.author","Noeske, K. G."],["dc.contributor.author","Iglesias-Paramo, J."],["dc.contributor.author","Vilchez, J. M."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T09:29:44Z"],["dc.date.available","2018-11-07T09:29:44Z"],["dc.date.issued","2001"],["dc.description.abstract","We are currently performing a new analysis of the close environment of star-forming dwarf galaxies and its effects on their star-forming activity. For a sample of 142 thoroughly studied objects, we search the NASA Extragalactic Database for possible companion galaxies of any apparent luminosity and angular size. From a first analysis of a part of our sample, we find only about 50% of our objects to be isolated in the sense that no companion object was detected within a redshift difference of 500 km s(-1) and an angular separation corresponding to a projected distance of 1 Mpc, assuming H-0=75 km s(-1) Mpc(-1). By splitting the sample into different redshift intervals, we demonstrate an observational bias against low-luminosity companion objects which implies that a large fraction of star-forming dwarf galaxies, although lacking bright companions, might possess dwarf companion objects. Similarly to other authors, we find no evidence for a difference in star-forming activity due to the presence or absence of possible companions."],["dc.identifier.doi","10.1023/A:1017505513493"],["dc.identifier.isi","000170945400030"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31118"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","Euroconference on the Evolution of Galaxies on Cosmological Timescales"],["dc.relation.eventlocation","PUERTO CRUZ, SPAIN"],["dc.relation.issn","0004-640X"],["dc.title","The environment of star-forming dwarf galaxies - The role of dwarf companion objects"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","220"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.lastpage","236"],["dc.bibliographiccitation.volume","347"],["dc.contributor.author","Berentzen, I."],["dc.contributor.author","Athanassoula, E."],["dc.contributor.author","Heller, C. H."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T10:52:56Z"],["dc.date.available","2018-11-07T10:52:56Z"],["dc.date.issued","2004"],["dc.description.abstract","We study the regeneration of stellar bars triggered by a tidal interaction, using numerical simulations of either purely stellar or stellar+gas disc galaxies. We find that interactions which are sufficiently strong to regenerate the bar in the purely stellar models do not lead to a regeneration in the dissipative models, owing to the induced gas inflow in those models. In models in which the bar can be regenerated, we find a tight correlation between the strength and the pattern speed of the induced bar. This relation can be explained by a significant radial redistribution of angular momentum in the disc due to the interaction, similar to the processes and correlations found for isolated barred spirals. Furthermore, we show that the regenerated bars show the same dynamical properties as their isolated counterparts."],["dc.identifier.doi","10.1111/j.1365-2966.2004.07198.x"],["dc.identifier.isi","000187257000023"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49230"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Blackwell Publishing Ltd"],["dc.relation.issn","0035-8711"],["dc.title","The regeneration of stellar bars by tidal interactions: numerical simulations of fly-by encounters"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","222"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The Astrophysical Journal"],["dc.bibliographiccitation.lastpage","235"],["dc.bibliographiccitation.volume","560"],["dc.contributor.author","Izotov, Y. I."],["dc.contributor.author","Chaffee, F. H."],["dc.contributor.author","Foltz, C. B."],["dc.contributor.author","Thuan, T. X."],["dc.contributor.author","Green, R. F."],["dc.contributor.author","Papaderos, P."],["dc.contributor.author","Fricke, K. J."],["dc.contributor.author","Guseva, N. G."],["dc.date.accessioned","2018-11-07T08:32:43Z"],["dc.date.available","2018-11-07T08:32:43Z"],["dc.date.issued","2001"],["dc.description.abstract","Long-slit Keck II,(1) 4 m Kitt Peak,(2) and 4.5 m MMT3 spectrophotometric data are used to investigate the stellar population and the evolutionary status of I Zw 18C, the faint C component of the nearby blue compact dwarf galaxy I Zw 18. Hydrogen H alpha and H beta emission lines are detected in the spectra of I Zw 18C, which implies that ionizing massive stars are present. High signal-to-noise Keck II spectra of different regions in I Zw 18C reveal H gamma, H delta, and higher order hydrogen lines in absorption. Several techniques are used to constrain the age of the stellar population in I Zw 18C. Ages derived from two different methods, one based on the equivalent widths of the H alpha, H beta emission lines and the other on H gamma, H delta absorption lines are consistent with a 15 Myr instantaneous burst model. We find that a small extinction in the range A(V) = 0.20-0.65 mag is needed to fit the observed spectral energy distribution of I Zw 18C with that model. In the case of constant star formation, all observed properties are consistent with stars forming continuously between similar to 10 and less than or similar to 100 Myr ago. We use all available observational constraints for I Zw 18C, including those obtained from Hubble Space Telescope color-magnitude diagrams, to argue that the distance to I Zw 18 should be as high as similar to 15 Mpc. The deep spectra also reveal extended ionized gas emission around I Zw 18. H alpha emission is detected as far as 30\" from it. To a B surface brightness limit of similar to 27 mag arcsec(-2), we find no observational evidence for extended stellar emission in the outermost regions at distances less than or similar to 15\" from I Zw 18."],["dc.identifier.doi","10.1086/322494"],["dc.identifier.isi","000171587300023"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17405"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Univ Chicago Press"],["dc.relation.issn","0004-637X"],["dc.title","A spectroscopic study of component C and the extended emission around I Zw 18"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","204"],["dc.bibliographiccitation.seriesnr","204"],["dc.contributor.author","Moller, C. S."],["dc.contributor.author","Fritze-Von Alvensleben, U."],["dc.contributor.author","Calzetti, D."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T09:32:17Z"],["dc.date.available","2018-11-07T09:32:17Z"],["dc.date.issued","2001"],["dc.identifier.isi","000175997600051"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31720"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Astronomical Soc Pacific"],["dc.publisher.place","San Francisco"],["dc.relation.conference","24th General Assembly of the International-Astronomical-Union"],["dc.relation.crisseries","Proceedings of the ... Symposium of the International Astronomical Union"],["dc.relation.eventend","2000-08-18"],["dc.relation.eventlocation","Manchester, United Kingdom"],["dc.relation.eventstart","2000-08-15"],["dc.relation.isbn","1-58381-062-5"],["dc.relation.ispartof","The extragalactic infrared background and its cosmological implications"],["dc.relation.ispartofseries","Symposium International Astronomical Union; 204"],["dc.title","Metallicities and dust in high-z galaxies"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Naunyn-Schmiedeberg s Archives of Pharmacology"],["dc.bibliographiccitation.volume","367"],["dc.contributor.author","Wienbergen, A."],["dc.contributor.author","Fricke, K. J."],["dc.contributor.author","Dickel, Corinna"],["dc.contributor.author","Lackmann, T. G."],["dc.contributor.author","Rustenbeck, I."],["dc.date.accessioned","2018-11-07T10:40:45Z"],["dc.date.available","2018-11-07T10:40:45Z"],["dc.date.issued","2003"],["dc.format.extent","R75"],["dc.identifier.isi","000182435500296"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46378"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.relation.conference","44th Meeting of the Deutsche-Gesellschaft-fur-Experimentelle-und-Klinische-Pharmakologie-und Toxikologie/20th Gesellschaft-fur-Umwelt-Mutationsforschung"],["dc.relation.eventlocation","MAINZ, GERMANY"],["dc.relation.issn","0028-1298"],["dc.title","Antagonism of the insulinotropic effect of imidazolines by K-ATP channel openers"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A21"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","624"],["dc.contributor.author","Guseva, N. G."],["dc.contributor.author","Izotov, Y. I."],["dc.contributor.author","Fricke, K. J."],["dc.contributor.author","Henkel, C."],["dc.date.accessioned","2020-12-10T18:11:47Z"],["dc.date.available","2020-12-10T18:11:47Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1051/0004-6361/201834935"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74140"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Mg II  λ 2797, λ 2803 emission in a large sample of low-metallicity star-forming galaxies from SDSS DR14"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","169"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The Astronomical Journal"],["dc.bibliographiccitation.lastpage","181"],["dc.bibliographiccitation.volume","121"],["dc.contributor.author","Fricke, K. J."],["dc.contributor.author","Izotov, Y. I."],["dc.contributor.author","Papaderos, P."],["dc.contributor.author","Guseva, N. G."],["dc.contributor.author","Thuan, T. X."],["dc.date.accessioned","2018-11-07T09:29:17Z"],["dc.date.available","2018-11-07T09:29:17Z"],["dc.date.issued","2001"],["dc.description.abstract","We present a spectrophotometric study based on VLT/FORS I observations of one of the most metal-deficient blue compact dwarf (BCD) galaxies known, Tol 1214-277 (Z similar to Z(.)/25). The data show that roughly half of the total luminosity of the BCD originates from a bright and compact starburst region located at the northeastern tip of a faint dwarf galaxy with cometary appearance. The starburst has ignited less than 4 Myr ago and its emission is powered by several thousand O7V stars and similar to 170 late-type nitrogen Wolf-Rayet stars located within a compact region with less than or similar to 500 pc in diameter. For the first time in a BCD, a relatively strong [Fe V] lambda 4227 emission line is seen which together with intense He II lambda 4686 emission indicates the presence of a very hard radiation field in Tol 1214-277. We argue that this extraordinarily hard radiation originates from both Wolf-Rayet stars and radiative shocks in the starburst region. The structural properties of the low surface brightness (LSB) component underlying the starburst have been investigated by means of surface photometry down to 28 B mag arcsec(-2). We find that, for a surface brightness level fainter than similar to 24.5 B mag arcsec(-2), an exponential fitting law provides an adequate approximation to its radial intensity distribution. The broadband colors in the outskirts of the LSB component of Tol 1214-277 are nearly constant and are consistent with an age below one Gyr. This conclusion is supported by the comparison of the observed spectral energy distribution (SED) of the LSB host with theoretical SEDs."],["dc.identifier.doi","10.1086/318016"],["dc.identifier.isi","000166173300013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30987"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Univ Chicago Press"],["dc.relation.issn","0004-6256"],["dc.title","An imaging and spectroscopic study of the very metal-deficient blue compact dwarf galaxy Tol 1214-277"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","539"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Astrophysics and Space Science"],["dc.bibliographiccitation.lastpage","540"],["dc.bibliographiccitation.volume","281"],["dc.contributor.author","Heidt, J."],["dc.contributor.author","Appenzeller, I."],["dc.contributor.author","Bender, R."],["dc.contributor.author","Fricke, K. J."],["dc.date.accessioned","2018-11-07T10:32:48Z"],["dc.date.available","2018-11-07T10:32:48Z"],["dc.date.issued","2002"],["dc.identifier.doi","10.1023/A:1019587329235"],["dc.identifier.isi","000175921200130"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/44439"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","2nd Euroconference on Relevant Basic Building Blocks and Small-scale Processes in Galaxy Evolution"],["dc.relation.eventlocation","ST DENIS REUNION, FRANCE"],["dc.relation.issn","0004-640X"],["dc.title","The FORS Deep Field: Photometry, photometric redshifts and first spectroscopic results"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","468"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.lastpage","482"],["dc.bibliographiccitation.volume","491"],["dc.contributor.author","Izotov, Y I"],["dc.contributor.author","Schaerer, D"],["dc.contributor.author","Worseck, G"],["dc.contributor.author","Verhamme, A"],["dc.contributor.author","Guseva, N G"],["dc.contributor.author","Thuan, T X"],["dc.contributor.author","Orlitová, I"],["dc.contributor.author","Fricke, K J"],["dc.date.accessioned","2020-12-10T18:19:32Z"],["dc.date.available","2020-12-10T18:19:32Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1093/mnras/stz3041"],["dc.identifier.eissn","1365-2966"],["dc.identifier.issn","0035-8711"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75282"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Diverse properties of Ly α emission in low-redshift compact star-forming galaxies with extremely high [O iii]/[O ii] ratios"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A138"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","646"],["dc.contributor.author","Izotov, Y. I."],["dc.contributor.author","Guseva, N. G."],["dc.contributor.author","Fricke, K. J."],["dc.contributor.author","Henkel, C."],["dc.contributor.author","Schaerer, D."],["dc.contributor.author","Thuan, T. X."],["dc.date.accessioned","2021-04-14T08:28:32Z"],["dc.date.available","2021-04-14T08:28:32Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1051/0004-6361/202039772"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82638"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1432-0746"],["dc.relation.issn","0004-6361"],["dc.title","Low-redshift compact star-forming galaxies as analogues of high-redshift star-forming galaxies"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]