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Unveiling the new generation of stars in NGC 604 with Gemini-NIRI
Cecilia Farina, Guillermo L. Bosch, Rodolfo H. Barba
We present a near infrared study focused on the detection and characterization of the youngest stellar component of the NGC 604 giant star-forming region, in the Triangulum galaxy…
VVV DR1: The First Data Release of the Milky Way Bulge and Southern Plane from the Near-Infrared ESO Public Survey VISTA Variables in the Via Lactea
R. K. Saito, M. Hempel, D. Minniti +107
The ESO Public Survey VISTA Variables in the Via Lactea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for…
Wind structure and luminosity variations in the WR/LBV HD 5980
Leonid N Georgiev, Gloria Koenigsberger, D John Hillier +3
Over the past 40 years, the massive LBV/WR system HD 5980 in the Small Magellanic Cloud has undergone a long-term S Doradus type variability cycle and two brief and violent eruptio…
Further Results from the Galactic O-Star Spectroscopic Survey: Rapidly Rotating Late ON Giants
Nolan R. Walborn, Jesus Maiz Apellaniz, Alfredo Sota +5
With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we…
Two O2 If*/WN6 stars possibly ejected from the massive young Galactic cluster Westerlund 2
A. Roman-Lopes, R. H. Barba, N. I. Morrell
In this paper we report the identification of two new Galactic O2 If*/WN6 stars (WR20aa and WR20c), in the outskirt of the massive young stellar cluster Westerlund 2. The morpholog…