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Searching for spiral features in the outer Galactic disk The field towards WR38 and WR38a

Carraro, Giovanni;Costa, Edgardo (2009-01)

Context. The detailed spiral structure of the outer Galactic disk remains poorly constrained, and for several line of sights in the Galaxy we depend on model extrapolations. Aims. One of these regions is th....
Correlated X-ray/ultraviolet/optical variability in the very low mass AGN NGC 4395

Cameron, D. T.;McHardy, I.;Dwelly, T.;Breedt, E.;Uttley, P.;Lira Teillery, Paulina;Arévalo, P. (2012-05)

We report the results of a 1-yr Swift X-ray/ultraviolet (UV)/optical programme monitoring the dwarf Seyfert nucleus in NGC4395 in 2008–2009. The UV/optical flux from the nucleus was found to vary dramatically....
ON THE INTERPRETATION OF HIGH-VELOCITY WHITE DWARFS AS MEMBERS OF THE GALACTIC HALO

Bergeron, P.;Ruiz, María Teresa;Hamuy, Mario;Leggett, K.;Currie, M. J.;Lajoie, C.-P. (2005-06-01)

A detailed analysis of 32 of the 38 halo white dwarf candidates identified by Oppenheimer et al. is presented, based on model atmosphere fits to observed energy distributions built from optical BVRI and infrar....
Extended star formation history of the star cluster NGC 2154 in the Large Magellanic Cloud

Baume, Gustavo;Carraro, Giovanni;Costa, Edgardo;Méndez, René A. (2007)

The colour–magnitude diagram (CMD) of the intermediate-age Large Magellanic Cloud star cluster NGC 2154 and its adjacent field has been analysed using Padova stellar models to determine the cluster’s fundamen....
Cataclysmic variables from the Calan-Tololo Survey - II. Spectroscopic periods

Augusteijn, T.;Tappert, C.;Dall, T.;Maza, J. (2010-06-11)

In this second paper on cataclysmic variables detected in the Cal´an–Tololo Survey we present time-resolved spectroscopy for the remaining eight systems without a measured orbital period. We derive orbital pe....

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