Institut für Astrophysik und Geophysik

[["dc.bibliographiccitation.firstpage","A68"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","625"],["dc.contributor.author","Schweitzer, A."],["dc.contributor.author","Passegger, V. M."],["dc.contributor.author","Cifuentes, C."],["dc.contributor.author","Béjar, V. J. S."],["dc.contributor.author","Cortés-Contreras, M."],["dc.contributor.author","Caballero, J. A."],["dc.contributor.author","del Burgo, C."],["dc.contributor.author","Czesla, S."],["dc.contributor.author","Kürster, M."],["dc.contributor.author","Montes, D."],["dc.contributor.author","Zapatero Osorio, M. R."],["dc.contributor.author","Ribas, I."],["dc.contributor.author","Reiners, A."],["dc.contributor.author","Quirrenbach, A."],["dc.contributor.author","Amado, P. J."],["dc.contributor.author","Aceituno, J."],["dc.contributor.author","Anglada-Escudé, G."],["dc.contributor.author","Bauer, F. F."],["dc.contributor.author","Dreizler, S."],["dc.contributor.author","Jeffers, S. V."],["dc.contributor.author","Guenther, E. W."],["dc.contributor.author","Henning, T."],["dc.contributor.author","Kaminski, A."],["dc.contributor.author","Lafarga, M."],["dc.contributor.author","Marfil, E."],["dc.contributor.author","Morales, J. C."],["dc.contributor.author","Schmitt, J. H. M. M."],["dc.contributor.author","Seifert, W."],["dc.contributor.author","Solano, E."],["dc.contributor.author","Tabernero, H. M."],["dc.contributor.author","Zechmeister, M."],["dc.date.accessioned","2020-12-10T18:11:47Z"],["dc.date.available","2020-12-10T18:11:47Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1051/0004-6361/201834965"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74142"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The CARMENES search for exoplanets around M dwarfs"],["dc.title.alternative","Different roads to radii and masses of the target stars"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A20"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","648"],["dc.contributor.author","Toledo-Padrón, B."],["dc.contributor.author","Suárez Mascareño, A."],["dc.contributor.author","González Hernández, J. I."],["dc.contributor.author","Rebolo, R."],["dc.contributor.author","Pinamonti, M."],["dc.contributor.author","Perger, M."],["dc.contributor.author","Scandariato, G."],["dc.contributor.author","Damasso, M."],["dc.contributor.author","Sozzetti, A."],["dc.contributor.author","Zechmeister, M."],["dc.date.accessioned","2021-06-01T09:41:47Z"],["dc.date.available","2021-06-01T09:41:47Z"],["dc.date.issued","2021"],["dc.description.abstract","Context. M-dwarfs have proven to be ideal targets for planetary radial velocity (RV) searches due to their higher planet-star mass contrast, which favors the detection of low-mass planets. The abundance of super-Earth and Earth-like planets detected around this type of star motivates further such research on hosts without reported planetary companions. Aims. The HADES and CARMENES programs are aimed at carrying out extensive searches of exoplanetary systems around M-type stars in the northern hemisphere, allowing us to address, in a statistical sense, the properties of the planets orbiting these objects. In this work, we perform a spectroscopic and photometric study of one of the program stars (GJ 740), which exhibits a short-period RV signal that is compatible with a planetary companion. Methods. We carried out a spectroscopic analysis based on 129 HARPS-N spectra taken over a time span of 6 yr combined with 57 HARPS spectra taken over 4 yr, as well as 32 CARMENES spectra taken during more than 1 yr, resulting in a dataset with a time coverage of 10 yr. We also relied on 459 measurements from the public ASAS survey with a time-coverage of 8 yr, along with 5 yr of photometric magnitudes from the EXORAP project taken in the V , B , R , and I filters to carry out a photometric study. Both analyses were made using Markov chain Monte Carlo simulations and Gaussian process regression to model the activity of the star. Results. We present the discovery of a short-period super-Earth with an orbital period of 2.37756 −0.00011 +0.00013 d and a minimum mass of 2.96 −0.48 +0.50 M ⊕ . We offer an update to the previously reported characterization of the magnetic cycle and rotation period of the star, obtaining values of P rot = 35.563 ± 0.071 d and P cycle = 2800 ± 150 d. Furthermore, the RV time series exhibits a possibly periodic long-term signal, which might be related to a Saturn-mass planet of ~100 M ⊕ ."],["dc.identifier.doi","10.1051/0004-6361/202040099"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85038"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1432-0746"],["dc.relation.issn","0004-6361"],["dc.title","A super-Earth on a close-in orbit around the M1V star GJ 740"],["dc.title.alternative","A HADES and CARMENES collaboration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A22"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","645"],["dc.contributor.author","Yan, F."],["dc.contributor.author","Wyttenbach, A."],["dc.contributor.author","Casasayas-Barris, N."],["dc.contributor.author","Reiners, A."],["dc.contributor.author","Pallé, E."],["dc.contributor.author","Henning, Th."],["dc.contributor.author","Mollière, P."],["dc.contributor.author","Czesla, S."],["dc.contributor.author","Nortmann, L."],["dc.contributor.author","Molaverdikhani, K."],["dc.contributor.author","Chen, G."],["dc.contributor.author","Snellen, I. A. G."],["dc.contributor.author","Zechmeister, M."],["dc.contributor.author","Huang, C."],["dc.contributor.author","Ribas, I."],["dc.contributor.author","Quirrenbach, A."],["dc.contributor.author","Caballero, J. A."],["dc.contributor.author","Amado, P. J."],["dc.contributor.author","Cont, D."],["dc.contributor.author","Khalafinejad, S."],["dc.contributor.author","Khaimova, J."],["dc.contributor.author","López-Puertas, M."],["dc.contributor.author","Montes, D."],["dc.contributor.author","Nagel, E."],["dc.contributor.author","Oshagh, M."],["dc.contributor.author","Pedraz, S."],["dc.contributor.author","Stangret, M."],["dc.date.accessioned","2021-04-14T08:30:14Z"],["dc.date.available","2021-04-14T08:30:14Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1051/0004-6361/202039302"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83161"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1432-0746"],["dc.relation.issn","0004-6361"],["dc.title","Detection of the hydrogen Balmer lines in the ultra-hot Jupiter WASP-33b"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3063"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.lastpage","3085"],["dc.bibliographiccitation.volume","476"],["dc.contributor.author","Hložek, Renée"],["dc.contributor.author","Marsh, David J E"],["dc.contributor.author","Grin, Daniel"],["dc.date.accessioned","2020-12-10T18:19:30Z"],["dc.date.available","2020-12-10T18:19:30Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1093/mnras/sty271"],["dc.identifier.eissn","1365-2966"],["dc.identifier.issn","0035-8711"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75268"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Using the full power of the cosmic microwave background to probe axion dark matter"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A128"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","619"],["dc.contributor.author","Zechmeister, M."],["dc.date.accessioned","2020-12-10T18:11:40Z"],["dc.date.available","2020-12-10T18:11:40Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1051/0004-6361/201833162"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74106"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","CORDIC-like method for solving Kepler’s equation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A50"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","640"],["dc.contributor.author","Bauer, F. F."],["dc.contributor.author","Zechmeister, M."],["dc.contributor.author","Kaminski, A."],["dc.contributor.author","Rodríguez López, C."],["dc.contributor.author","Caballero, J. A."],["dc.contributor.author","Azzaro, M."],["dc.contributor.author","Stahl, O."],["dc.contributor.author","Kossakowski, D."],["dc.contributor.author","Quirrenbach, A."],["dc.contributor.author","Becerril Jarque, S."],["dc.contributor.author","Rodríguez, E."],["dc.contributor.author","Amado, P. J."],["dc.contributor.author","Seifert, W."],["dc.contributor.author","Reiners, A."],["dc.contributor.author","Schäfer, S."],["dc.contributor.author","Ribas, I."],["dc.contributor.author","Béjar, V. J. S."],["dc.contributor.author","Cortés-Contreras, M."],["dc.contributor.author","Dreizler, S."],["dc.contributor.author","Hatzes, A."],["dc.contributor.author","Henning, T."],["dc.contributor.author","Jeffers, S. V."],["dc.contributor.author","Kürster, M."],["dc.contributor.author","Lafarga, M."],["dc.contributor.author","Montes, D."],["dc.contributor.author","Morales, J. C."],["dc.contributor.author","Schmitt, J. H. M. M."],["dc.contributor.author","Schweitzer, A."],["dc.contributor.author","Solano, E."],["dc.date.accessioned","2021-04-14T08:24:23Z"],["dc.date.available","2021-04-14T08:24:23Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1051/0004-6361/202038031"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81267"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1432-0746"],["dc.relation.issn","0004-6361"],["dc.title","The CARMENES search for exoplanets around M dwarfs"],["dc.title.alternative","Measuring precise radial velocities in the near infrared: The example of the super-Earth CD Cet b"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

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[["dc.bibliographiccitation.firstpage","L5"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","609"],["dc.contributor.author","Reiners, A."],["dc.contributor.author","Ribas, I."],["dc.contributor.author","Zechmeister, M."],["dc.contributor.author","Caballero, J. A."],["dc.contributor.author","Trifonov, T."],["dc.contributor.author","Dreizler, S."],["dc.contributor.author","Morales, J. C."],["dc.contributor.author","Tal-Or, L."],["dc.contributor.author","Lafarga, M."],["dc.contributor.author","Quirrenbach, A."],["dc.contributor.author","Zapatero Osorio, M. R."],["dc.date.accessioned","2020-12-10T18:11:38Z"],["dc.date.available","2020-12-10T18:11:38Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1051/0004-6361/201732165"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15629"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74089"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","The CARMENES search for exoplanets around M dwarfs"],["dc.title.alternative","HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","L8"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","602"],["dc.contributor.author","Trifonov, T."],["dc.contributor.author","Kürster, M."],["dc.contributor.author","Zechmeister, M."],["dc.contributor.author","Zakhozhay, O. V."],["dc.contributor.author","Reffert, S."],["dc.contributor.author","Lee, M. H."],["dc.contributor.author","Rodler, F."],["dc.contributor.author","Vogt, S. S."],["dc.contributor.author","Brems, S. S."],["dc.date.accessioned","2020-12-10T18:11:35Z"],["dc.date.available","2020-12-10T18:11:35Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1051/0004-6361/201731044"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16809"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74070"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Three planets around HD 27894"],["dc.title.alternative","A close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU⋆"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Physical Review D"],["dc.bibliographiccitation.volume","106"],["dc.contributor.author","Chen, Jiajun"],["dc.contributor.author","Du, Xiaolong"],["dc.contributor.author","Lentz, Erik W."],["dc.contributor.author","Marsh, David J. E."],["dc.date.accessioned","2022-10-04T10:22:14Z"],["dc.date.available","2022-10-04T10:22:14Z"],["dc.date.issued","2022"],["dc.description.sponsorship"," National Aeronautics and Space Administration http://dx.doi.org/10.13039/100000104"],["dc.description.sponsorship"," U.S. Department of Energy http://dx.doi.org/10.13039/100000015"],["dc.identifier.doi","10.1103/PhysRevD.106.023009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/114621"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-600"],["dc.relation.eissn","2470-0029"],["dc.relation.issn","2470-0010"],["dc.rights.uri","https://link.aps.org/licenses/aps-default-license"],["dc.title","Relaxation times for Bose-Einstein condensation by self-interaction and gravity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]