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Accurate parameters for HD 209458 and its planet from HST spectrophotometry
del Burgo, C.; Allende Prieto, C.
We present updated parameters for the star HD 209458 and its transiting giant planet. The stellar angular diameter θ = 0.2254 ± 0.0017 mas is obtained from the average ratio between the absolute flux observed with the Hubble Space Telescope and that of the best-fitting Kurucz model atmosphere. This angular diameter represents an improvement in pre…
Spectral and timing evolution of the bright failed outburst of the transient black hole Swift J174510.8-262411
Sbarufatti, B.; Homan, J.; Tomsick, J. A. +13 more
We studied time variability and spectral evolution of the Galactic black hole transient Swift J174510.8-262411 during the first phase of its outburst. INTEGRAL and Swift observations collected from 2012 September 16 until October 30 have been used. The total squared fractional rms values did not drop below 5 per cent and quasi-periodic oscillation…
Auroral evidence of radial transport at Jupiter during January 2014
Gray, R. L.; Badman, S. V.; Bonfond, B. +5 more
We present Jovian auroral observations from the 2014 January Hubble Space Telescope (HST) campaign and investigate the auroral signatures of radial transport in the magnetosphere alongside contemporaneous radio and Hisaki EUV data. HST FUV auroral observations on day 11 show, for the first time, a significantly superrotating polar spot poleward of…
Size growth of red-sequence early-type galaxies in clusters in the last 10 Gyr
Andreon, S.; Dong, Hui; Raichoor, A.
We carried out a photometric and structural analysis in the rest-frame V band of a mass-selected (log M/M⊙> 10.7) sample of red-sequence galaxies in 14 galaxy clusters, 6 of which are at z> 1.45, namely JKCS041, IDCS J1426.5+3508, SpARCS104922.6+564032.5, SpARCSJ021524-034331, XDCPJ0044.0-2033, and SPT-CLJ2040-4451. To this end, w…
The X-ray dust-scattered rings of the black hole low-mass binary V404 Cyg
Vasilopoulos, G.; Petropoulou, M.
We report on the first detection of X-ray dust-scattered rings from the Galactic low-mass X-ray binary V404 Cyg. The observation of the system with Swift/XRT on 2015 June 30 revealed the presence of five concentric ring-like structures centred at the position of V404 Cyg. Follow-up Swift/XRT observations allowed a time-dependent study of the X-ray…
ν generation: Present and future constraints on neutrino masses from global analysis of cosmology and laboratory experiments
Melchiorri, Alessandro; Gerbino, Martina; Lattanzi, Massimiliano
We perform a joint analysis of current data from cosmology and laboratory experiments to constrain the neutrino mass parameters in the framework of Bayesian statistics, also accounting for uncertainties in nuclear modeling, relevant for neutrinoless double β decay (0 ν 2 β ) searches. We find that a combination of current oscillation, cosmological…
The SOPHIE search for northern extrasolar planets. VIII. Follow-up of ELODIE candidates: long-period brown-dwarf companions
Bouchy, F.; Moutou, C.; Queloz, D. +29 more
Long-period brown dwarf companions detected in radial velocity surveys are important targets for direct imaging and astrometry to calibrate the mass-luminosity relation of substellar objects. Through a 20-yr radial velocity monitoring of solar-type stars that began with ELODIE and was extended with SOPHIE spectrographs, giant exoplanets and brown …
The extinction and dust-to-gas structure of the planetary nebula NGC 7009 observed with MUSE
Walsh, J. R.; Barlow, M. J.; Monreal-Ibero, A. +3 more
Context. Dust plays a significant role in planetary nebulae. Dust ejected with the gas in the asymptotic giant branch (AGB) phase is subject to the harsh environment of the planetary nebula (PN) while the star is evolving towards a white dwarf. Dust surviving the PN phase contributes to the dust content of the interstellar medium.
Aims: The m…
Concurrent Formation of Carbon and Silicate Dust in Nova V1280 Sco
Onaka, Takashi; Usui, Fumihiko; Koo, Bon-Chul +12 more
We present infrared multi-epoch observations of the dust-forming nova V1280 Sco over ∼2000 days from the outburst. The temporal evolution of the infrared spectral energy distributions at 1272, 1616, and 1947 days can be explained by the emissions produced by amorphous carbon dust of mass (6.6-8.7) × 10-8 M⊙ with a representat…
Geomorphological mapping of comet 67P/Churyumov-Gerasimenko's Southern hemisphere
Bertaux, Jean-Loup; Da Deppo, Vania; Naletto, Giampiero +49 more
In 2015 May, the Southern hemisphere of comet 67P/Churyumov-Gerasimenko became visible by the OSIRIS cameras on-board the Rosetta spacecraft. The resolution was high enough to carry out a detailed analysis of the surface morphology, which is quite different from the Northern hemisphere. Previous works show that fine particle deposits are the most …