888 citations
- Instituto de Astrofísica de CanariasES155 papers
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55 papers · 1 filter
Subaru and Swift observations of V652 Herculis: resolving the photospheric pulsation
C. S. Jeffery, D. Kurtz, H. Shibahashi +4
High resolution spectroscopy with the Subaru High Dispersion Spectrograph, and Swift ultraviolet photometry are presented for the pulsating extreme helium star V652\,Her. Swift pro…
Modelling circumplanetary ejecta clouds at low altitudes: a probabilistic approach
Apostolos A. Christou
A model is presented of a ballistic, collisionless, steady state population of ejecta launched at randomly distributed times and velocities and moving under constant gravity above…
Observations and modelling of North-South asymmetries using a Flux Transport Dynamo
Juie Shetye, Durgesh Tripathi, Mausumi Dikpati
The peculiar behaviour of the solar cycle 23 and its prolonged minima has been one of the most studied problems over the last few years. In the present paper, we study the asymmetr…
Low-resolution optical spectra of ultracool dwarfs with OSIRIS/GTC
Yanina Metodieva, Antoaneta Antonova, Valeri Golev +3
We present the results of low-resolution optical spectroscopy with OSIRIS/GTC (Optical System for Imaging and Low Resolution Integrated Spectroscopy / Gran Telescopio Canarias) for…
Pre-main sequence accretion in the low metallicity Galactic star-forming region Sh 2-284
V. M. Kalari, J. S. Vink
We present optical spectra of pre-main sequence (PMS) candidates around the H region taken with the Southern African Large Telescope, SALT, in the low metallicity () Galactic…
Yarkovsky-Driven Spreading of the Eureka Family of Mars Trojans
Matija Ćuk, Apostolos A. Christou, Douglas P. Hamilton
Out of nine known stable Mars Trojans, seven appear to be members of an orbital grouping including the largest Trojan, Eureka. In order to test if this could be a genetic family, w…