Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Del Sordo, F."'
Autor:
Barnes, J. R., Jeffers, S. V., Haswell, C. A., Damasso, M., Del Sordo, F., Liebing, F., Perger, M., Anglada-Escudé, G.
The radial velocity (RV) method of exoplanet detection requires mitigation of nuisance signals arising from stellar activity. Using analytic cool and facular spot models, we explore the use of central line moments (CLMs) for recovering and monitoring
Externí odkaz:
http://arxiv.org/abs/2409.10306
Autor:
Liebing, F., Jeffers, S. V., Gorrini, P., Haswell, C. A., Dreizler, S., Barnes, J. R., Hartogh, C., Koseleva, V., Del Sordo, F., Amado, P. J., Caballero, J. A., López-González, M. J., Morales, N., Reiners, A., Ribas, I., Quirrenbach, A., Rodríguez, E., Tal-Or, L., Tsapras, Y.
Aims. Using HARPS spectroscopic data obtained by the RedDots campaign, as well as archival data from HARPS and CARMENES, supplemented with ASH2 and T90 photometry, we aim to search for additional planets around the three M dwarfs GJ 832, GJ 674, and
Externí odkaz:
http://arxiv.org/abs/2409.01173
Autor:
Amazo-Gómez, E. M., Alvarado-Gómez, J. D., Poppenhaeger, K., Hussain, G. A. J., Wood, B. E., Drake, J. J., Nascimento Jr., J. -D. do, Anthony, F., Sanz-Forcada, J., Stelzer, B., Donati, J. F., Del Sordo, F., Damasso, M., Redfield, S., König, P. C., Hébrard, G., Miles-Páez, P. A.
A comprehensive multi-wavelength campaign has been carried out to probe stellar activity and variability in the young Sun-like star $\iota$-Horologii. We present the results from long-term spectropolarimetric monitoring of the system by using the ult
Externí odkaz:
http://arxiv.org/abs/2307.01744
Autor:
Blanco-Pozo, J., Perger, M., Damasso, M., Escudé, G. Anglada, Ribas, I., Baroch, D., Caballero, J. A., Cifuentes, C., Jeffers, S. V., Lafarga, M., Kaminski, A., Kaur, S., Nagel, E., Perdelwitz, V., Pérez-Torres, M., Sozzetti, A., Viganò, D., Amado, P. J., Andreuzzi, G., Brown, E. L., Del Sordo, F., Dreizler, S., Galadí-Enríquez, D., Hatzes, A. P., Kürster, M., Lanza, A. F., Melis, A., Molinari, E., Montes, D., Murgia, M., Pallé, E., Peña-Moñino, L., Perrodin, D., Pilia, M., Poretti, E., Quirrenbach, A., Reiners, A., Schweitzer, A., Osorio, M. R. Zapatero, Zechmeister, M.
Publikováno v:
A&A 671, A50 (2023)
Detecting a planetary companion in a short-period orbit through radio emission from the interaction with its host star is a new prospect in exoplanet science. Recently, a tantalising signal was found close to the low-mass stellar system GJ 1151 using
Externí odkaz:
http://arxiv.org/abs/2301.04442
Publikováno v:
Volume 521, Issue 1, May 2023, Pages 1415 1428
Magnetic fields have been observed in massive Ap/Bp stars and presumably are also present in the radiative zone of solar-like stars. Yet, to date there is no clear understanding of the dynamics of the magnetic field in stably stratified layers. A pur
Externí odkaz:
http://arxiv.org/abs/2211.10536
Autor:
Gorrini, P., Astudillo-Defru, N., Dreizler, S., Damasso, M., Díaz, R. F., Bonfils, X., Jeffers, S. V., Barnes, J. R., Del Sordo, F., Almenara, J. -M., Artigau, E., Bouchy, F., Charbonneau, D., Delfosse, X., Doyon, R., Figueira, P., Forveille, T., Haswell, C. A., López-González, M. J., Melo, C., Mennickent, R. E., Gaisné, G., Morales, N., Murgas, F., Pepe, F., Rodríguez, E., Santos, N. C., Tal-Or, L., Tsapras, Y., Udry, S.
Publikováno v:
A&A 664, A64 (2022)
Context. Gliese 832 (GJ 832) is an M2V star hosting a massive planet on a decade-long orbit, GJ 832b, discovered by radial velocity (RV). Later, a super Earth or mini-Neptune orbiting within the stellar habitable zone was reported (GJ 832c). The rece
Externí odkaz:
http://arxiv.org/abs/2206.07552
Autor:
Gratton, R., Zurlo, A., Coroller, H. Le, Damasso, M., Del Sordo, F., Langlois, M., Mesa, D., Milli, J., Chauvin, G., Desidera, S., Hagelberg, J., Lagadec, E., Vigan, A., Boccaletti, A., Bonnefoy, M., Brandner, W., Brown, S., Cantalloube, F., Delorme, P., D'Orazi, V., Feldt, M., Galicher, R., Henning, T., Janson, M., Kervella, P., Lagrange, A. M., Lazzoni, C., Ligi, R., Maire, A. -L., Menard, F., Meyer, M., Mugnier, L., Potier, A., Rickman, E. L., Rodet, L., Romero, C., Schmidt, T., Sissa, E., Sozzetti, A., Szulagyi, J., Wahhaj, Z., Antichi, J., Fusco, T., Stadler, E., Suarez, M., Wildi, F.
Publikováno v:
A&A 638, A120 (2020)
Proxima Centauri is known to host an earth-like planet in its habitable zone; very recently a second candidate planet was proposed based on radial velocities. At quadrature, the expected projected separation of this new candidate is larger than 1 arc
Externí odkaz:
http://arxiv.org/abs/2004.06685
Unveiling the evolution of toroidal field instability, known as Tayler instability, is essential to understand the strength and topology of the magnetic fields observed in early-type stars, in the core of the red giants, or in any stellar radiative z
Externí odkaz:
http://arxiv.org/abs/1909.02897
Publikováno v:
A&A 628, A106 (2019)
We present further evidence of the presence of acoustic oscillations on the slowly-rotating, over-active G8 sub-giant EK Eri. This star was observed with the 1-m Hertzsprung SONG telescope, at the Observatorio del Teide for two different runs of 8 an
Externí odkaz:
http://arxiv.org/abs/1907.01338
Autor:
Damasso, M., Del Sordo, F.
Publikováno v:
A&A 599, A126 (2017)
The detection and characterisation of Earth-like planets with Doppler signals of the order of 1 m/s currently represent one of the greatest challenge for extrasolar-planet hunters. As results for such findings are often controversial, it is desirable
Externí odkaz:
http://arxiv.org/abs/1612.03786