Zobrazeno 1 - 10
of 435
pro vyhledávání: '"Maciejewski, G"'
Autor:
Maciejewski, G., Niedzielski, A., Gozdziewski, K., Wolszczan, A., Villaver, E., Fernandez, M., Adamow, M., Sierzputowska, J.
The star HD 118203, classified as a K0 subgiant, was known to harbour a transiting hot Jupiter planet on a 6.1-day eccentric orbit. Previous studies also revealed a linear trend in the radial velocity (RV) domain, indicative of a companion on a wide
Externí odkaz:
http://arxiv.org/abs/2407.11706
Publikováno v:
Acta Astronomica, 2023, 73, p. 159-177
We present the results of our search for nearby planetary companions of transiting hot Jupiters in 12 planetary systems: HAT-P-24, HAT-P-39, HAT-P-42, HAT-P-50, KELT-2, KELT-15, KELT-17, WASP-23, WASP-63, WASP-76, WASP-79, and WASP-161. Our analysis
Externí odkaz:
http://arxiv.org/abs/2312.03319
Autor:
Maciejewski, G., Fernández, M., Sota, A., Amado, P. J., Ohlert, J., Bischoff, R., Stenglein, W., Mugrauer, M., Michel, K. -U., Golonka, J., Solsona, A. Blanco, Lapena, E., Freire, J. Molins, Curieses, A. De los Ríos, Sicilia, J. A. Temprano
The loneliness of hot Jupiters supports the high-eccentricity migration as a primary path leading to the formation of systems with those planets stripped of any close-in planetary companions. Here we present the null results of searches for low-mass
Externí odkaz:
http://arxiv.org/abs/2307.00538
Hot Jupiters have been perceived as loners devoid of planetary companions in close orbital proximity. However, recent discoveries based on space-borne precise photometry have revealed that at least some fraction of giant planets coexists with low-mas
Externí odkaz:
http://arxiv.org/abs/2305.09177
Autor:
Maciejewski, G., Fernandez, M., Sota, A., Amado, P. J., Dimitrov, D., Nikolov, Y., Ohlert, J., Mugrauer, M., Bischoff, R., Heyne, T., Hildebrandt, F., Stenglein, W., Arevalo, A. A., Neira, S., Riesco, L. A., Martinez, V. Sanchez, Verdugo, M. M.
Publikováno v:
A&A 667, A127 (2022)
Hot Jupiters on extremely short-period orbits are expected to be unstable to tidal dissipation and spiral toward their host stars. That is because they transfer the angular momentum of the orbital motion through tidal dissipation into the stellar int
Externí odkaz:
http://arxiv.org/abs/2209.10597
Autor:
Almenara, J. M., Hébrard, G., Díaz, R. F., Laskar, J., Correia, A. C. M., Anderson, D. R., Boisse, I., Bonfils, X., Brown, D. J. A., Casanova, V., Cameron, A. Collier, Fernández, M., Jenkins, J. M., Kiefer, F., Étangs, A. Lecavelier des, Lissauer, J. J, Maciejewski, G., McCormac, J., Osborn, H., Pollacco, D., Ricker, G., Sánchez, J., Seager, S., Udry, S., Verilhac, D., Winn, J.
Publikováno v:
A&A 663, A134 (2022)
WASP-148 is a recently announced extra-solar system harbouring at least two giant planets. The inner planet transits its host star. The planets travel on eccentric orbits and are near the 4:1 mean-motion resonance, which implies significant mutual gr
Externí odkaz:
http://arxiv.org/abs/2204.06656
Autor:
Maciejewski, G.
Uninterrupted observations from space-borne telescopes provide the photometric precision that is required to detect shallow transits of small planets missed by ground-based surveys. We used data from the Transiting Exoplanet Survey Satellite (TESS) t
Externí odkaz:
http://arxiv.org/abs/2202.11990
Autor:
Maciejewski, G., Fernandez, M., Aceituno, F., Ramos, J. L., Dimitrov, D., Donchev, Z., Ohlert, J.
Publikováno v:
A&A 656, A88 (2021)
The orbital motion of the transiting hot Jupiter TrES-5 b was reported to be perturbed by a planetary companion on a nearby orbit. Such compact systems do not frequently occur in nature, and learning their orbital architecture could shed some light o
Externí odkaz:
http://arxiv.org/abs/2110.14294
The WASP-148 planetary system has a rare architecture with a transiting Saturn-mass planet on a tight orbit which is accompanied by a slightly more massive planet on a nearby outer orbit. Using new space-born photometry and ground-based follow-up tra
Externí odkaz:
http://arxiv.org/abs/2012.02602
Autor:
Maciejewski, G., Knutson, H. A., Howard, A. W., Isaacson, H., Fernandez-Lajus, E., Di Sisto, R. P., Migaszewski, C.
From its discovery, the WASP-18 system with its massive transiting planet on a tight orbit was identified as a unique laboratory for studies on tidal planet-star interactions. In an analysis of Doppler data, which include five new measurements obtain
Externí odkaz:
http://arxiv.org/abs/2004.06781