Passegger, Vera Maria

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[["dc.bibliographiccitation.firstpage","A6"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","615"],["dc.contributor.author","Passegger, V. M."],["dc.contributor.author","Reiners, A."],["dc.contributor.author","Jeffers, S. V."],["dc.contributor.author","Wende-von Berg, S."],["dc.contributor.author","Schöfer, P."],["dc.contributor.author","Caballero, J. A."],["dc.contributor.author","Schweitzer, A."],["dc.contributor.author","Amado, P. J."],["dc.contributor.author","Béjar, V. J. S."],["dc.contributor.author","Cortés-Contreras, M."],["dc.contributor.author","Hatzes, A. P."],["dc.contributor.author","Kürster, M."],["dc.contributor.author","Montes, D."],["dc.contributor.author","Pedraz, S."],["dc.contributor.author","Quirrenbach, A."],["dc.contributor.author","Ribas, I."],["dc.contributor.author","Seifert, W."],["dc.date.accessioned","2020-12-10T18:11:38Z"],["dc.date.available","2020-12-10T18:11:38Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1051/0004-6361/201732312"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74090"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The CARMENES search for exoplanets around M dwarfs"],["dc.title.alternative","Photospheric parameters of target stars from high-resolution spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","144"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The Astrophysical Journal"],["dc.bibliographiccitation.volume","794"],["dc.contributor.author","Reiners, Ansgar"],["dc.contributor.author","Schuessler, M."],["dc.contributor.author","Passegger, V. M."],["dc.date.accessioned","2018-11-07T09:33:31Z"],["dc.date.available","2018-11-07T09:33:31Z"],["dc.date.issued","2014"],["dc.description.abstract","Magnetic activity in Sun-like and low-mass stars causes X-ray coronal emission which is stronger for more rapidly rotating stars. This relation is often interpreted in terms of the Rossby number, i.e., the ratio of rotation period to convective overturn time. We reconsider this interpretation on the basis of the observed X-ray emission and rotation periods of 821 stars with masses below 1.4M(circle dot). A generalized analysis of the relation between X-ray luminosity normalized by bolometric luminosity, L-X/L-bol, and combinations of rotational period, P, and stellar radius, R, shows that the Rossby formulation does not provide the solution with minimal scatter. Instead, we find that the relation L-X/L-bol alpha P-2R-4 optimally describes the non-saturated fraction of the stars. This relation is equivalent to L-X alpha P-2, indicating that the rotation period alone determines the total X-ray emission. Since L-X is directly related to the magnetic flux at the stellar surface, this means that the surface flux is determined solely by the star's rotation and is independent of other stellar parameters. While a formulation in terms of a Rossby number would be consistent with these results if the convective overturn time scales exactly as L-bol(-1/2), our generalized approach emphasizes the need to test a broader range of mechanisms for dynamo action in cool stars."],["dc.description.sponsorship","DFG Collaborative Research Center [SFB 963]; DFG [RE 1664/9-1, GrK-1351]"],["dc.identifier.doi","10.1088/0004-637X/794/2/144"],["dc.identifier.isi","000343085800048"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31981"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1538-4357"],["dc.relation.issn","0004-637X"],["dc.title","GENERALIZED INVESTIGATION OF THE ROTATION-ACTIVITY RELATION: FAVORING ROTATION PERIOD INSTEAD OF ROSSBY NUMBER"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A194"],["dc.bibliographiccitation.journal","Astronomy & Astrophysics"],["dc.bibliographiccitation.volume","658"],["dc.contributor.author","Passegger, V. M."],["dc.contributor.author","Bello-García, A."],["dc.contributor.author","Ordieres-Meré, J."],["dc.contributor.author","Antoniadis-Karnavas, A."],["dc.contributor.author","Marfil, E."],["dc.contributor.author","Duque-Arribas, C."],["dc.contributor.author","Amado, P. J."],["dc.contributor.author","Delgado-Mena, E."],["dc.contributor.author","Montes, D."],["dc.contributor.author","Rojas-Ayala, B."],["dc.contributor.author","Ribas, I."],["dc.date.accessioned","2022-04-01T10:00:43Z"],["dc.date.available","2022-04-01T10:00:43Z"],["dc.date.issued","2022"],["dc.description.abstract","Deriving metallicities for solar-like stars follows well-established methods, but for cooler stars such as M dwarfs, the determination is much more complicated due to forests of molecular lines that are present. Several methods have been developed in recent years to determine accurate stellar parameters for these cool stars ( T eff ≲ 4000 K). However, significant differences can be found at times when comparing metallicities for the same star derived using different methods. In this work, we determine the effective temperatures, surface gravities, and metallicities of 18 well-studied M dwarfs observed with the CARMENES high-resolution spectrograph following different approaches, including synthetic spectral fitting, analysis of pseudo-equivalent widths, and machine learning. We analyzed the discrepancies in the derived stellar parameters, including metallicity, in several analysis runs. Our goal is to minimize these discrepancies and find stellar parameters that are more consistent with the literature values. We attempted to achieve this consistency by standardizing the most commonly used components, such as wavelength ranges, synthetic model spectra, continuum normalization methods, and stellar parameters. We conclude that although such modifications work quite well for hotter main-sequence stars, they do not improve the consistency in stellar parameters for M dwarfs, leading to mean deviations of around 50–200 K in temperature and 0.1–0.3 dex in metallicity. In particular, M dwarfs are much more complex and a standardization of the aforementioned components cannot be considered as a straightforward recipe for bringing consistency to the derived parameters. Further in-depth investigations of the employed methods would be necessary in order to identify and correct for the discrepancies that remain."],["dc.identifier.doi","10.1051/0004-6361/202141920"],["dc.identifier.pii","aa41920-21"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105497"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1432-0746"],["dc.relation.issn","0004-6361"],["dc.title","Metallicities in M dwarfs: Investigating different determination techniques"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

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E."],["dc.contributor.author","Moya, A."],["dc.contributor.author","Mundt, R."],["dc.contributor.author","Seifert, W."],["dc.contributor.author","Nagel, E."],["dc.contributor.author","Naranjo, V."],["dc.contributor.author","Nortmann, Lisa"],["dc.contributor.author","Nowak, G."],["dc.contributor.author","Ofir, A."],["dc.contributor.author","Oreiro, R."],["dc.contributor.author","Pallé, E."],["dc.contributor.author","Panduro, J."],["dc.contributor.author","Pascual, J."],["dc.contributor.author","Passegger, Vera Maria"],["dc.contributor.author","Abril, M."],["dc.contributor.author","Pavlov, A."],["dc.contributor.author","Pedraz, S."],["dc.contributor.author","Pérez-Calpena, A."],["dc.contributor.author","Medialdea, D. Pérez"],["dc.contributor.author","Perger, M."],["dc.contributor.author","Perryman, M. A. C."],["dc.contributor.author","Pluto, M."],["dc.contributor.author","Rabaza, O."],["dc.contributor.author","Ramón, A."],["dc.contributor.author","Rebolo, R."],["dc.contributor.author","Aceituno, J."],["dc.contributor.author","Redondo, P."],["dc.contributor.author","Reffert, S."],["dc.contributor.author","Reinhart, S."],["dc.contributor.author","Rhode, P."],["dc.contributor.author","Rix, H.-W."],["dc.contributor.author","Rodler, F."],["dc.contributor.author","Rodríguez, E."],["dc.contributor.author","Rodríguez-López, C."],["dc.contributor.author","Rodríguez Trinidad, A."],["dc.contributor.author","Rohloff, R.-R."],["dc.contributor.author","Alonso-Floriano, F. J."],["dc.contributor.author","Rosich, A."],["dc.contributor.author","Sadegi, S."],["dc.contributor.author","Sánchez-Blanco, E."],["dc.contributor.author","Sánchez Carrasco, M. A."],["dc.contributor.author","Sánchez-López, A."],["dc.contributor.author","Sanz-Forcada, J."],["dc.contributor.author","Sarkis, P."],["dc.contributor.author","Sarmiento, L. F."],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Schmitt, J. H. M. M."],["dc.contributor.author","Ammler-von Eiff, M."],["dc.contributor.author","Schiller, J."],["dc.contributor.author","Schweitzer, A."],["dc.contributor.author","Solano, E."],["dc.contributor.author","Stahl, O."],["dc.contributor.author","Strachan, J. B. P."],["dc.contributor.author","Stürmer, J."],["dc.contributor.author","Suárez, J. C."],["dc.contributor.author","Tabernero, H. M."],["dc.contributor.author","Tala, M."],["dc.contributor.author","Trifonov, T."],["dc.contributor.author","Antona, R."],["dc.contributor.author","Tulloch, S. M."],["dc.contributor.author","Ulbrich, R. G."],["dc.contributor.author","Veredas, G."],["dc.contributor.author","Vico Linares, J. I."],["dc.contributor.author","Vilardell, F."],["dc.contributor.author","Wagner, K."],["dc.contributor.author","Winkler, J."],["dc.contributor.author","Wolthoff, V."],["dc.contributor.author","Xu, W."],["dc.contributor.author","Yan, F."],["dc.contributor.author","Anglada-Escudé, G."],["dc.contributor.author","Zapatero Osorio, M. R."],["dc.contributor.author","Anwand-Heerwart, H."],["dc.contributor.author","Arroyo-Torres, B."],["dc.contributor.author","Azzaro, M."],["dc.contributor.author","Baroch, D."],["dc.contributor.author","Barrado, D."],["dc.contributor.author","Bauer, Florian F."],["dc.contributor.author","Becerril, S."],["dc.contributor.author","Béjar, V. J. S."],["dc.contributor.author","Benítez, D."],["dc.contributor.author","Berdinas̃, Z. M."],["dc.contributor.author","Bergond, G."],["dc.contributor.author","Blümcke, M."],["dc.contributor.author","Brinkmöller, M."],["dc.contributor.author","del Burgo, C."],["dc.contributor.author","Cano, J."],["dc.contributor.author","Cárdenas Vázquez, M. C."],["dc.contributor.author","Casal, E."],["dc.contributor.author","Cifuentes, C."],["dc.contributor.author","Claret, A."],["dc.contributor.author","Colomé, J."],["dc.contributor.author","Cortés-Contreras, M."],["dc.contributor.author","Czesla, S."],["dc.contributor.author","Díez-Alonso, E."],["dc.contributor.author","Dreizler, Stefan"],["dc.contributor.author","Feiz, C."],["dc.contributor.author","Fernández, M."],["dc.contributor.author","Ferro, I. M."],["dc.contributor.author","Fuhrmeister, B."],["dc.contributor.author","Galadí-Enríquez, D."],["dc.contributor.author","Garcia-Piquer, A."],["dc.contributor.author","García Vargas, M. L."],["dc.contributor.author","Gesa, L."],["dc.contributor.author","Galera, V. Gómez"],["dc.contributor.author","González Hernández, J. I."],["dc.contributor.author","González-Peinado, R."],["dc.contributor.author","Grözinger, U."],["dc.contributor.author","Grohnert, S."],["dc.contributor.author","Guàrdia, J."],["dc.contributor.author","Guenther, E. W."],["dc.contributor.author","Guijarro, A."],["dc.contributor.author","Guindos, E. de"],["dc.contributor.author","Gutiérrez-Soto, J."],["dc.contributor.author","Hagen, H.-J."],["dc.contributor.author","Hatzes, A. P."],["dc.contributor.author","Hauschildt, P. H."],["dc.contributor.author","Hedrosa, R. P."],["dc.contributor.author","Helmling, J."],["dc.contributor.author","Henning, Th."],["dc.contributor.author","Hermelo, I."],["dc.contributor.author","Hernández Arabí, R."],["dc.contributor.author","Hernández Castaño, L."],["dc.contributor.author","Hernández Hernando, F."],["dc.contributor.author","Herrero, E."],["dc.contributor.author","Huber, A."],["dc.contributor.author","Huke, Philipp"],["dc.contributor.author","Johnson, E. N."],["dc.contributor.author","Juan, E. de"],["dc.contributor.author","Kim, M."],["dc.contributor.author","Klein, R."],["dc.contributor.author","Klüter, J."],["dc.contributor.author","Klutsch, A."],["dc.contributor.author","Kürster, M."],["dc.contributor.author","Lafarga, M."],["dc.contributor.author","Lamert, A."],["dc.contributor.author","Lampón, M."],["dc.contributor.author","Lara, L. M."],["dc.contributor.author","Laun, W."],["dc.contributor.author","Lemke, U."],["dc.contributor.author","Lenzen, R."],["dc.contributor.author","Launhardt, R."],["dc.contributor.author","López del Fresno, M."],["dc.contributor.author","López-González, J."],["dc.contributor.author","López-Puertas, M."],["dc.contributor.author","López Salas, J. F."],["dc.contributor.author","López-Santiago, J."],["dc.contributor.author","Luque, R."],["dc.contributor.author","Magán Madinabeitia, H."],["dc.contributor.author","Mall, U."],["dc.contributor.author","Mancini, L."],["dc.contributor.author","Mandel, H."],["dc.contributor.author","Marfil, E."],["dc.contributor.author","Marín Molina, J. A."],["dc.date.accessioned","2021-11-22T14:31:40Z"],["dc.date.available","2021-11-22T14:31:40Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1051/0004-6361/201732054"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15628"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/93396"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.issn","1432-0746"],["dc.relation.issn","0004-6361"],["dc.title","The CARMENES search for exoplanets around M dwarfs"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","The Astronomical Journal"],["dc.bibliographiccitation.volume","164"],["dc.contributor.affiliation","Trifonov, Trifon;"],["dc.contributor.affiliation","Wollbold, Anna;"],["dc.contributor.affiliation","Kürster, Martin;"],["dc.contributor.affiliation","Eberhardt, Jan;"],["dc.contributor.affiliation","Stock, Stephan;"],["dc.contributor.affiliation","Henning, Thomas;"],["dc.contributor.affiliation","Reffert, Sabine;"],["dc.contributor.affiliation","Butler, R. Paul;"],["dc.contributor.affiliation","Vogt, Steven S.;"],["dc.contributor.affiliation","Reiners, Ansgar;"],["dc.contributor.affiliation","Lee, Man Hoi;"],["dc.contributor.affiliation","Bitsch, Bertram;"],["dc.contributor.affiliation","Zechmeister, Mathias;"],["dc.contributor.affiliation","Rodler, Florian;"],["dc.contributor.affiliation","Perdelwitz, Volker;"],["dc.contributor.affiliation","Tal-Or, Lev;"],["dc.contributor.affiliation","Rybizki, Jan;"],["dc.contributor.affiliation","Heeren, Paul;"],["dc.contributor.affiliation","Gandolfi, Davide;"],["dc.contributor.affiliation","Barragán, Oscar;"],["dc.contributor.affiliation","Zakhozhay, Olga;"],["dc.contributor.affiliation","Sarkis, Paula;"],["dc.contributor.affiliation","Pinto, Marcelo Tala;"],["dc.contributor.affiliation","Kossakowski, Diana;"],["dc.contributor.affiliation","Wolthoff, Vera;"],["dc.contributor.affiliation","Brems, Stefan S.;"],["dc.contributor.affiliation","Passegger, Vera Maria;"],["dc.contributor.author","Trifonov, Trifon"],["dc.contributor.author","Wollbold, Anna"],["dc.contributor.author","Kürster, Martin"],["dc.contributor.author","Eberhardt, Jan"],["dc.contributor.author","Stock, Stephan"],["dc.contributor.author","Henning, Thomas"],["dc.contributor.author","Reffert, Sabine"],["dc.contributor.author","Butler, R. Paul"],["dc.contributor.author","Vogt, Steven S."],["dc.contributor.author","Reiners, Ansgar"],["dc.contributor.author","Lee, Man Hoi"],["dc.contributor.author","Bitsch, Bertram"],["dc.contributor.author","Zechmeister, Mathias"],["dc.contributor.author","Rodler, Florian"],["dc.contributor.author","Perdelwitz, Volker"],["dc.contributor.author","Tal-Or, Lev"],["dc.contributor.author","Rybizki, Jan"],["dc.contributor.author","Heeren, Paul"],["dc.contributor.author","Gandolfi, Davide"],["dc.contributor.author","Barragán, Oscar"],["dc.contributor.author","Zakhozhay, Olga"],["dc.contributor.author","Sarkis, Paula"],["dc.contributor.author","Pinto, Marcelo Tala"],["dc.contributor.author","Kossakowski, Diana"],["dc.contributor.author","Wolthoff, Vera"],["dc.contributor.author","Brems, Stefan S."],["dc.contributor.author","Passegger, Vera Maria"],["dc.date.accessioned","2022-11-15T16:21:40Z"],["dc.date.available","2022-11-15T16:21:40Z"],["dc.date.issued","2022-09-22"],["dc.date.updated","2022-11-11T13:13:33Z"],["dc.description.abstract","AbstractBased on recently-taken and archival HARPS, FEROS, and HIRES radial velocities (RVs), we present evidence for a new planet orbiting the first ascent red giant star HD 33142 (with an improved mass estimate of M1.52 ± 0.03 M\r\n ⊙), already known to host two planets. We confirm the Jovian-mass planets HD 33142b and c, with periods of P\r\n b = \r\n \r\n\r\n\r\n 330.0−0.4+0.4\r\n \r\n days and P\r\n c = \r\n \r\n\r\n\r\n 810.2−4.2+3.8\r\n \r\n days and minimum dynamical masses of \r\n \r\n\r\n\r\n mbsini\r\n \r\n = \r\n \r\n\r\n\r\n 1.26−0.05+0.05\r\n \r\n \r\n M\r\n Jup and \r\n \r\n\r\n\r\n mcsini\r\n \r\n = \r\n \r\n\r\n\r\n 0.89−0.05+0.06\r\n \r\n MJup, respectively. Furthermore, our periodogram analysis of the precise RVs shows strong evidence for a short-period Doppler signal in the residuals of a two-planet Keplerian fit, which we interpret as a third, Saturn-mass planet with \r\n \r\n\r\n\r\n mdsini\r\n \r\n = \r\n \r\n\r\n\r\n 0.20−0.03+0.02\r\n \r\n \r\n M\r\n Jup in a close-in orbit with an orbital period of P\r\n d = \r\n \r\n\r\n\r\n 89.9−0.1+0.1\r\n \r\n days. We study the dynamical behavior of the three-planet system configuration with an N-body integration scheme, finding it to be long-term stable with the planets alternating between low and moderate eccentricity episodes. We also perform N-body simulations, including stellar evolution and second-order dynamical effects such as planet–stellar tides and stellar mass loss on the way to the white dwarf phase. We find that planets HD 33142b, c, and d are likely to be engulfed near the tip of the red giant branch phase due to tidal migration. These results make the HD 33142 system an essential benchmark for planet population statistics of the multiple-planet systems found around evolved stars."],["dc.identifier.doi","10.3847/1538-3881/ac7ce0"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/117068"],["dc.language.iso","en"],["dc.relation.eissn","1538-3881"],["dc.relation.issn","0004-6256"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","A New Third Planet and the Dynamical Architecture of the HD33142 HD 33142 Planetary System* *Based on observations collected at the European Organization for Astronomical Research in the Southern Hemisphere under ESO programs 60.A-9700, 60.A-9036, 097.C-0090, 0100.C-0414, 0101.C-0232, 0102.C-0338, and MPG programs 088.C-0892, 099.A-9009, 0100.A-9006."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A171"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","620"],["dc.contributor.author","Luque, R."],["dc.contributor.author","Nowak, G."],["dc.contributor.author","Pallé, E."],["dc.contributor.author","Kossakowski, D."],["dc.contributor.author","Trifonov, T."],["dc.contributor.author","Zechmeister, M."],["dc.contributor.author","Béjar, V. J. S."],["dc.contributor.author","Cardona Guillén, C."],["dc.contributor.author","Tal-Or, L."],["dc.contributor.author","Hidalgo, D."],["dc.contributor.author","Ribas, I."],["dc.contributor.author","Reiners, A."],["dc.contributor.author","Caballero, J. A."],["dc.contributor.author","Amado, P. J."],["dc.contributor.author","Quirrenbach, A."],["dc.contributor.author","Aceituno, J."],["dc.contributor.author","Cortés-Contreras, M."],["dc.contributor.author","Díez-Alonso, E."],["dc.contributor.author","Dreizler, S."],["dc.contributor.author","Guenther, E. W."],["dc.contributor.author","Henning, T."],["dc.contributor.author","Jeffers, S. V."],["dc.contributor.author","Kaminski, A."],["dc.contributor.author","Kürster, M."],["dc.contributor.author","Lafarga, M."],["dc.contributor.author","Montes, D."],["dc.contributor.author","Morales, J. C."],["dc.contributor.author","Passegger, V. M."],["dc.contributor.author","Schmitt, J. H. M. M."],["dc.contributor.author","Schweitzer, A."],["dc.date.accessioned","2020-12-10T18:11:42Z"],["dc.date.available","2020-12-10T18:11:42Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1051/0004-6361/201833423"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74111"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The CARMENES search for exoplanets around M dwarfs"],["dc.title.alternative","The warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]