Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Llama, J."'
Autor:
Barnes, J. R., Standing, M. R., Haswell, C. A., Staab, D., Doherty, J. P. J., Waller-Bridge, M., Fossati, L., Soto, M., Anglada-Escudé, G., Llama, J., McCune, C., Lewis, F. W.
We present radial velocity measurements of the very bright ($V\sim5.7$) nearby F star, DMPP-4 (HD 184960). The anomalously low Ca II H&K emission suggests mass loss from planets orbiting a low activity host star. Periodic radial velocity variability
Externí odkaz:
http://arxiv.org/abs/2307.07530
Autor:
Strugarek, A., Fares, R., Bourrier, V., Brun, A. S., Réville, V., Amari, T., Helling, Ch., Jardine, M., Llama, J., Moutou, C., Vidotto, A. A., Wheatley, P. J., Zarka, P.
Magnetic interactions between stars and close-in planets may lead to a detectable signal on the stellar disk. HD 189733 is one of the key exosystems thought to harbor magnetic interactions, which may have been detected in August 2013. We present a se
Externí odkaz:
http://arxiv.org/abs/2203.10956
Autor:
Bourrier, V., Wheatley, P. J., Etangs, A. Lecavelier des, King, G., Louden, T., Ehrenreich, D., Fares, R., Helling, Ch., Llama, J., Jardine, M. M., Vidotto, A. A.
In this third paper of the MOVES (Multiwavelength Observations of an eVaporating Exoplanet and its Star) programme, we combine Hubble Space Telescope far-ultraviolet observations with XMM-Newton/Swift X-ray observations to measure the emission of HD
Externí odkaz:
http://arxiv.org/abs/2001.11048
The {\it Transiting Exoplanet Survey Satellite} (TESS) searches for planets transiting bright and nearby stars using high-cadence, large-scale photometric observations. Full Frame Images provided by the TESS mission include large number of serendipit
Externí odkaz:
http://arxiv.org/abs/1911.01495
Autor:
Kavanagh, R. D., Vidotto, A. A., Fionnagáin, D. Ó, Bourrier, V., Fares, R., Jardine, M., Helling, Ch., Moutou, C., Llama, J., Wheatley, P. J.
Publikováno v:
Proc. IAU 15 (2019) 305-309
The hot Jupiter HD189733b is expected to be a source of strong radio emission, due to its close proximity to its magnetically active host star. Here, we model the stellar wind of its host star, based on reconstructed surface stellar magnetic field ma
Externí odkaz:
http://arxiv.org/abs/1910.13350
Autor:
Tegler, S. C., Stufflebeam, T. D., Grundy, W. M., Hanley, J., Dustrud, S., Lindberg, G. E., Engle, A., Dillingham, T. R., Matthew, D., Trilling, D., Roe, H., Llama, J., Mace, G., Quirico, E.
A combination band due to a mechanism whereby a photon excites two or more vibrational modes ({\it e.g.} a bend and a stretch) of an individual molecule is commonly seen in laboratory and astronomical spectroscopy. Here, we present evidence of a much
Externí odkaz:
http://arxiv.org/abs/1905.13250
Autor:
Kavanagh, R. D., Vidotto, A. A., Fionnagáin, D. Ó, Bourrier, V., Fares, R., Jardine, M., Helling, Ch., Moutou, C., Llama, J., Wheatley, P. J.
We present stellar wind modelling of the hot Jupiter host HD189733, and predict radio emission from the stellar wind and the planet, the latter arising from the interaction of the stellar wind with the planetary magnetosphere. Our stellar wind models
Externí odkaz:
http://arxiv.org/abs/1903.01809
Autor:
Fares, R., Bourrier, V., Vidotto, A. A., Moutou, C., Jardine, M. M., Zarka, P., Helling, Ch., Etangs, A. Lecavelier des, Llama, J., Louden, T., Wheatley, P. J., Ehrenreich, D.
HD189733 is an active K dwarf that is, with its transiting hot Jupiter, among the most studied exoplanetary systems. In this first paper of the Multiwavelength Observations of an eVaporating Exoplanet and its Star (MOVES) program, we present a 2-year
Externí odkaz:
http://arxiv.org/abs/1706.07262
Autor:
Barros, S. C. C., Brown, D. J. A., Hébrard, G., Chew, Y. Gómez Maqueo, Anderson, D. R., Boumis, P., Delrez, L., Hay, K. L., Lam, K. W. F., Llama, J., Lendl, M., McCormac, J., Skiff, B., Smalley, B, Turner, O, Vanhuysse, M., Armstrong, D. J., Boisse, I., Bouchy, F., Cameron, A. Collier, Faedi, F., Gillon, M., Hellier, C., Jehin, E., Liakos, A., Meaburn, J., Osborn, H. P., Pepe, F., Plauchu-Frayn, I., Pollacco, D., Queloz, D., Rey, J., Spake, J., Ségransan, D., Triaud, A. H. M., Udry, S., Walker, S. R., Watson, C. A., West, R. G., Wheatley, P. J.
Publikováno v:
A&A 593, A113 (2016)
We present the discovery and characterisation of the exoplanets WASP-113b and WASP-114b by the WASP survey, {\it SOPHIE} and {\it CORALIE}. The planetary nature of the systems was established by performing follow-up photometric and spectroscopic obse
Externí odkaz:
http://arxiv.org/abs/1607.02341
Autor:
Haywood, R. D., Cameron, A. Collier, Unruh, Y. C., Lovis, C., Lanza, A. F., Llama, J., Deleuil, M., Fares, R., Gillon, M., Moutou, C., Pepe, F., Pollacco, D., Queloz, D., Segransan, D.
The Sun is the only star whose surface can be directly resolved at high resolution, and therefore constitutes an excellent test case to explore the physical origin of stellar radial-velocity (RV) variability. We present HARPS observations of sunlight
Externí odkaz:
http://arxiv.org/abs/1601.05651