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http://hdl.handle.net/20.500.12666/571
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| Campo DC | Valor | Idioma |
|---|---|---|
| dc.rights.license | © ESO 2021 | - |
| dc.contributor.author | Niedzielski, A. | - |
| dc.contributor.author | Villaver, E. | - |
| dc.contributor.author | Adamów, M. | - |
| dc.contributor.author | Kowalik, K. | - |
| dc.contributor.author | Wolszczan, A. | - |
| dc.contributor.author | Maciejewski, G. | - |
| dc.date.accessioned | 2022-02-15T14:12:24Z | - |
| dc.date.available | 2022-02-15T14:12:24Z | - |
| dc.date.issued | 2021-04-13 | - |
| dc.identifier.citation | Astronomy and Astrophysics 648: A58(2021) | es |
| dc.identifier.issn | 0004-6361 | - |
| dc.identifier.other | https://www.aanda.org/articles/aa/abs/2021/04/aa37892-20/aa37892-20.html | - |
| dc.identifier.uri | http://hdl.handle.net/20.500.12666/571 | - |
| dc.description | Table 2 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/648/A58 Based on observations obtained with the Hobby-Eberly Telescope, which is a joint project of the University of Texas at Austin, the Pennsylvania State University, Stanford University, Ludwig-Maximilians-Universität München, and Georg-August-Universität Göttingen. Based on observations made with the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Fundación Galileo Galilei of the INAF (Istituto Nazionale di Astrofisica) at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias. | es |
| dc.description.abstract | Context. We present the current status of and new results from our search for exoplanets in a sample of solar-mass evolved stars observed with the HARPS-N and the 3.6 m Telescopio Nazionale Galileo (TNG), and the High-Resolution Spectrograph (HRS) and the 9.2 m Hobby-Eberly Telescope (HET). Aims. The aim of this project is to detect and characterize planetary-mass companions to solar-mass stars in a sample of 122 targets at various stages of evolution from the main sequence to the red giant branch, mostly subgiants and giants, selected from the Pennsylvania-Toruń Planet Search sample, and to use this sample to study relations between stellar properties, such as metallicity, luminosity, and the planet occurrence rate. Methods. This work is based on precise radial velocity (RV) measurements. We have observed the program stars for up to 14 yr with the HET/HRS and the TNG/HARPS-N. Results. We present the analysis of RV measurements with the HET/HRS and the TNG/HARPS-N of four solar-mass stars, HD 4760, HD 96992, BD+02 3313, and TYC 0434-04538-1. We found that HD 4760 hosts a companion with a minimum mass of 13.9 MJ (a = 1.14 au, e = 0.23); HD 96992 is a host to a m sin i = 1.14 MJ companion on an a = 1.24 au and e = 0.41 orbit, and TYC 0434-04538-1 hosts an m sin i = 6.1 MJ companion on an a = 0.66 au and e = 0.08 orbit. In the case of BD+02 3313 we found a correlation between the measured RVs and one of the stellar activity indicators, suggesting that the observed RV variations may either originate in stellar activity or be caused by the presence of an unresolved companion. We also discuss the current status of the project and a statistical analysis of the RV variations in our sample of target stars. Conclusions. In our sample of 122 solar-mass stars, 49 ± 5% of them appear to be single and 16 ± 3% spectroscopic binaries. The three giants hosting low-mass companions presented in this paper join the six previously identified giants in the sample. | es |
| dc.description.sponsorship | We thank the HET and IAC resident astronomers and telescope operators for their support. A.N. was supported by the Polish National Science Centre grant no. 2015/19/B/ST9/02937. E.V. acknowledges support from the Spanish Ministerio de Ciencia Inovacion y Universidades under grant PGC2018-101950-B-100. K.K. was funded in part by the Gordon and Betty Moore Foundation's Data-Driven Discovery Initiative through Grant GBMF4561. This research was supported in part by PL-Grid Infrastructure. The HET is a joint project of the University of Texas at Austin, the Pennsylvania State University, Stanford University, Ludwig-Maximilians-Universitat Munchen, and Georg-August-Universitat Gottingen. The HET is named in honor of its principal benefactors, William P. Hobby and Robert E. Eberly. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of NASA's Astrophysics Data System. The acknowledgements were compiled using the Astronomy Acknowledgement Generator. This research made use of SciPy (Jones et al. 2001). This research made use of the yt-project, a toolkit for analyzing and visualizing quantitative data (Turk et al. 2011). This research made use of matplotlib, a Python library for publication quality graphics (Hunter 2007). This research made use of Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration 2013). IRAF is distributed by the National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under cooperative agreement with the National Science Foundation (Tody 1993). This research made use of NumPy (Walt et al. 2011). We thank the referee for comments that have significantly contributed to improving this paper. | es |
| dc.language.iso | eng | es |
| dc.publisher | EDP Sciences | es |
| dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-101950-B-I00/ES/ON THE ROCKS II/ | - |
| dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | es |
| dc.subject | Planetary systems | es |
| dc.subject | Planets and satellites: detection | es |
| dc.subject | Planet star interactions | es |
| dc.title | Tracking Advanced Planetary Systems (TAPAS) with HARPS-N VII. Elder suns with low-mass companions | es |
| dc.type | info:eu-repo/semantics/article | es |
| dc.contributor.orcid | Maciejewski, G. [0000-0002-4195-5781] | - |
| dc.contributor.orcid | Niedzielski, A. [https://orcid.org/0000-0002-0587-8854] | - |
| dc.identifier.doi | 10.1051/0004-6361/202037892 | - |
| dc.identifier.e-issn | 1432-0746 | - |
| dc.contributor.funder | Polish National Science Centre | - |
| dc.contributor.funder | Agencia Estatal de Investigación (AEI) | - |
| dc.description.peerreviewed | Peerreview | es |
| dc.identifier.funder | http://dx.doi.org/10.13039/501100011033 | - |
| dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | - |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
| dc.type.coar | http://purl.org/coar/resource_type/c_6501 | - |
| Aparece en las colecciones: | (CAB) Artículos | |
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|---|---|---|---|---|
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