The GAPS Programme at TNG LVIII. Two multi-planet systems with long-period substellar companions around metal-rich stars

被引：0

作者：

Ruggieri, A. ^{[1
,2
]}

Desidera, S. ^{[2
]}

Sozzetti, A. ^{[3
]}

Marzari, F. ^{[2
,4
]}

Pinamonti, M. ^{[3
]}

Gratton, R. ^{[2
]}

Biazzo, K. ^{[5
]}

D'Orazi, V. ^{[2
,6
]}

Malavolta, L. ^{[1
,2
]}

Mesa, D. ^{[2
]}

Claudi, R. ^{[2
]}

Benatti, S. ^{[7
]}

Bignamini, A. ^{[8
]}

Cabona, L. ^{[2
]}

Chauvin, G. ^{[9
]}

Hagelberg, J. ^{[10
]}

Mancini, L. ^{[3
,11
]}

Mantovan, G. ^{[1
,2
]}

Molinaro, M. ^{[8
]}

Nardiello, D. ^{[1
,2
]}

Scandariato, G. ^{[12
]}

Vigan, A. ^{[13
]}

Zingales, T. ^{[1
]}

机构：

[1] Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 2, I-35122 Padua, Italy

[2] INAF, Astron Observ Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[3] INAF, Astrophys Observ Turin, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy

[4] Univ Padua, Dept Phys & Astron, Via Marzolo 8, I-35131 Padua, Italy

[5] INAF, Astron Observ Rome, Via Frascati 33, I-00178 Monte Porzio Catone, RM, Italy

[6] Univ Roma Tor Vergata, Dept Phys, Via Ric Sci 1, I-00133 Rome, Italy

[7] INAF, Astron Observ Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy

[8] Astron Observ Trieste, INAF, Via Tiepolo 11, I-34143 Trieste, Italy

[9] Univ Cote Azur, Lab JL Lagrange, CNRS, Observ Cote Azur, F-06304 Nice, France

[10] Univ Geneva, Dept Astron, Chemin Pegasi 51, CH-1290 Versoix, Switzerland

[11] Univ Roma Tor Vergata, Dept Phys, Via Ric Sci 1, I-00133 Rome, Italy

[12] INAF, Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy

[13] Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France

来源：

ASTRONOMY & ASTROPHYSICS | 2024年 / 689卷

关键词：

techniques: radial velocities; planets and satellites: detection; stars: individual: HD 75898; stars: individual: HD 11506; stars: solar-type; CHAIN MONTE-CARLO; GAS GIANT PLANETS; RADIAL-VELOCITIES; HARPS-N; DIFFERENTIAL EVOLUTION; MAGNETIC CYCLES; GLOBAL DYNAMICS; STABLE CHAOS; HD; 11506; STELLAR;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Due to observational biases, a large fraction of known exoplanets are short-period objects. However, the search for planets began more than 20 yr ago, and so it is already possible - with the use of a suitable dataset - to begin exploring a wider range of the parameter space, such as that encompassing long-period planets. Aims. The aim of this paper is to investigate the presence of long-period giant companions in two systems where one or more planets are already known and for which a long-term trend in the radial velocities (RVs) was noted in previous works. Methods. Over the last 11 yr, we have collected 122 spectra of HD 75898 and 72 spectra of HD 11506 with the High Accuracy Radial velocity Planet Searcher for the Northern hemisphere (HARPS-N) in the framework of the Global Architecture of Planetary Systems (GAPS) project, from which we derived precise RV and activity indicator measurements. Additional RV data from the High-Resolution Echelle Spectrometer (HIRES) are also used here to increase the total time span. For our RV analysis, we used PyORBIT, an advanced Python tool for the simultaneous Bayesian analysis of RVs and stellar activity indicators. In addition, we used astrometric (Gaia DR3) and imaging archive data to complete our analysis. In particular, we combined RVs and astrometry to better constrain the mass and period of the new long-period companions. Results. We find evidence for one additional long-period companion (gas giant planet or brown dwarf) in both systems considered. The new candidate for HD 75898 has a period of roughly 18 yr and a true mass of around 8.5 M-J. For HD 11506, we confirm the new object (planet d) recently announced using HIRES data but we find that the period and true mass are both almost double the values based on HIRES results (P-d similar to 72 yr, M-d similar to 13 M-j). In addition, for HD 75898, we also find evidence of an activity cycle affecting RVs with a period of one order of magnitude lower than found in the literature.

引用

页数：21

共 95 条

[1]

Allard F, 2003, IAU SYMP, P325

[2]

Barbato D, 2018, Arxiv, DOI arXiv:1811.08249

[3] The GAPS programme at TNG XXIII. HD164922 d: close-in super-Earth discovered with HARPS-N in a system with a long-period Saturn mass companion [J].

Benatti, S. ;

Damasso, M. ;

Desidera, S. ;

Marzari, F. ;

Biazzo, K. ;

Claudi, R. ;

Di Mauro, M. P. ;

Lanza, A. F. ;

Pinamonti, M. ;

Barbato, D. ;

Malavolta, L. ;

Poretti, E. ;

Sozzetti, A. ;

Affer, L. ;

Bignamini, A. ;

Bonomo, A. S. ;

Borsa, F. ;

Brogi, M. ;

Bruno, G. ;

Carleo, I ;

Cosentino, R. ;

Covino, E. ;

Frustagli, G. ;

Giacobbe, P. ;

Gonzalez, M. ;

Gratton, R. ;

Harutyunyan, A. ;

Knapic, C. ;

Leto, G. ;

Lodi, M. ;

Maggio, A. ;

Maldonado, J. ;

Mancini, L. ;

Martinez Fiorenzano, A. ;

Micela, G. ;

Molinari, E. ;

Molinaro, M. ;

Nardiello, D. ;

Nascimbeni, V ;

Pagano, I ;

Pedani, M. ;

Piotto, G. ;

Rainer, M. ;

Scandariato, G. .

ASTRONOMY & ASTROPHYSICS, 2020, 639 (639)

[4] The 14 Her Planetary System: Companion Masses and Architecture from Radial Velocities and Astrometry [J].

Benedict, G. F. ;

McArthur, B. E. ;

Nelan, E. P. ;

Bean, J. L. .

ASTRONOMICAL JOURNAL, 2023, 166 (01)

[5] Exploring the Milky Way stellar disk A detailed elemental abundance study of 714 F and G dwarf stars in the solar neighbourhood [J].

Bensby, T. ;

Feltzing, S. ;

Oey, M. S. .

ASTRONOMY & ASTROPHYSICS, 2014, 562

[6] SPHERE: the exoplanet imager for the Very Large Telescope [J].

Beuzit, J. -L. ;

Vigan, A. ;

Mouillet, D. ;

Dohlen, K. ;

Gratton, R. ;

Boccaletti, A. ;

Sauvage, J. -F. ;

Schmid, H. M. ;

Langlois, M. ;

Petit, C. ;

Baruffolo, A. ;

Feldt, M. ;

Milli, J. ;

Wahhaj, Z. ;

Abe, L. ;

Anselmi, U. ;

Antichi, J. ;

Barette, R. ;

Baudrand, J. ;

Baudoz, P. ;

Bazzon, A. ;

Bernardi, P. ;

Blanchard, P. ;

Brast, R. ;

Bruno, P. ;

Buey, T. ;

Carbillet, M. ;

Carle, M. ;

Cascone, E. ;

Chapron, F. ;

Charton, J. ;

Chauvin, G. ;

Claudi, R. ;

Costille, A. ;

De Caprio, V. ;

de Boer, J. ;

Delboulbe, A. ;

Desidera, S. ;

Dominik, C. ;

Downing, M. ;

Dupuis, O. ;

Fabron, C. ;

Fantinel, D. ;

Farisato, G. ;

Feautrier, P. ;

Fedrigo, E. ;

Fusco, T. ;

Gigan, P. ;

Ginski, C. ;

Girard, J. .

ASTRONOMY & ASTROPHYSICS, 2019, 631

[7] The GAPS Programme at TNG XXXV. Fundamental properties of transiting exoplanet host stars [J].

Biazzo, K. ;

D'Orazi, V ;

Desidera, S. ;

Turrini, D. ;

Benatti, S. ;

Gratton, R. ;

Magrini, L. ;

Sozzetti, A. ;

Baratella, M. ;

Bonomo, A. S. ;

Borsa, F. ;

Claudi, R. ;

Covino, E. ;

Damasso, M. ;

Di Mauro, M. P. ;

Lanza, A. F. ;

Maggio, A. ;

Malavolta, L. ;

Maldonado, J. ;

Marzari, F. ;

Micela, G. ;

Poretti, E. ;

Vitello, F. ;

Affer, L. ;

Bignamini, A. ;

Carleo, I ;

Cosentino, R. ;

Fiorenzano, A. F. M. ;

Giacobbe, P. ;

Harutyunyan, A. ;

Leto, G. ;

Mancini, L. ;

Molinari, E. ;

Molinaro, M. ;

Nardiello, D. ;

Nascimbeni, V ;

Pagano, I ;

Pedani, M. ;

Piotto, G. ;

Rainer, M. ;

Scandariato, G. .

ASTRONOMY & ASTROPHYSICS, 2022, 664

[8] Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec [J].

Blanco-Cuaresma, S. ;

Soubiran, C. ;

Heiter, U. ;

Jofre, P. .

ASTRONOMY & ASTROPHYSICS, 2014, 569

[9] Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities No excess of cold Jupiters in small planet systems [J].

Bonomo, A. S. ;

Dumusque, X. ;

Massa, A. ;

Mortier, A. ;

Bongiolatti, R. ;

Malavolta, L. ;

Sozzetti, A. ;

Buchhave, L. A. ;

Damasso, M. ;

Haywood, R. D. ;

Morbidelli, A. ;

Latham, D. W. ;

Molinari, E. ;

Pepe, F. ;

Poretti, E. ;

Udry, S. ;

Affer, L. ;

Boschin, W. ;

Charbonneau, D. ;

Cosentino, R. ;

Cretignier, M. ;

Ghedina, A. ;

Lega, E. ;

Lopez-Morales, M. ;

Margini, M. ;

Fiorenzano, A. F. Martinez ;

Mayor, M. ;

Micela, G. ;

Pedani, M. ;

Pinamonti, M. ;

Rice, K. ;

Sasselov, D. ;

Tronsgaard, R. ;

Vanderburg, A. .

ASTRONOMY & ASTROPHYSICS, 2023, 677

[10] The Hipparcos-Gaia Catalog of Accelerations: Gaia EDR3 Edition [J].

Brandt, Timothy D. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2021, 254 (02)

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