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Mostrando ítems 11-20 de 163
The circumstellar envelope of IRC+10216 from milli-arcsecond to arcmin scales
(Astronomy & Astrophysics, 2006-07-31)
Investigation of the inner structures around HD169142 with VLT/SPHERE
(Oxford University Press, 2018)
We present observations of the Herbig Ae star HD 169142 with the VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) (K1K2 and H2H3 bands) and the Integral Field Spectrograph (IFS) (Y, J and H bands). ...
Probing the properties of Be star discs with spectroastrometry and NLTE radiative transfer modelling: beta CMi
(WILEY-BLACKWELLHOBOKEN, 2012)
While the presence of discs around classical Be stars is well established, their origin is still uncertain. To understand what processes result in the creation of these discs and how angular momentum is transported within ...
Submilliarcsecond optical interferometry of the high-mass X-Ray binary BP Cru with VLTI/GRAVITY
(IOP Publishing Ltd, 2017)
We observe the high-mass X-ray binary (HMXB) BP Cru using interferometry in the near-infrared K band with VLTI/GRAVITY. Continuum visibilities are at most partially resolved, consistent with the predicted size of the ...
K2-140b – an eccentric 6.57 d transiting hot Jupiter in Virgo
(Oxford University Press, 2018)
We present the discovery of K2-140b, a P = 6.57 d Jupiter-mass (M-P = 1.019 +/- 0.070 M-Jup) planet transiting a V = 12.5 (G5-spectral type) star in an eccentric orbit (e = 0.120(-0.046)(+0.056)) detected using a combination ...
A lucky imaging multiplicity study of exoplanet host stars - II
(Oxford Univ Press, 2016)
The vast majority of extrasolar planets are detected by indirect detection methods such as transit monitoring and radial velocity measurements. While these methods are very successful in detecting short-periodic planets, ...
Resolved astrometric orbits of ten O-type binaries
(EDP Sciences, 2017-05)
Aims. Our long-term aim is to derive model-independent stellar masses and distances for long period massive binaries by combining apparent astrometric orbit with double-lined radial velocity amplitudes (SB2).
Methods. ...
The morphology of CS Cha circumbinary disk suggesting the existence of a saturn-mass planet
(EDP Sciences, 2022)
Context. Planetshavebeendetectedincircumbinaryorbitsinseveraldifferentsystems,despitetheadditionalchallengesfacedduring their formation in such an environment. Aims. We investigate the possibility of planetary formation ...
Eccentricity in planetary systems and the role of binarity: sample definition, initial results, and the system of HD211847
(EDP Sciences, 2017)
We explore the multiplicity of exoplanet host stars with high-resolution images obtained with VLT/ SPHERE. Two different samples of systems were observed: one containing low-eccentricity outer planets, and the other ...