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Could kilomasers pinpoint supermassive stars?
Katarzyna Nowak, Martin. G. H. Krause, Daniel Schaerer
A strong nuclear kilomaser, W1, has been found in the nearby galaxy NGC 253, associated with a forming super star cluster. Kilomasers could arise from the accretion disc around sup…
Squeezed between shells? On the origin of the Lupus I molecular cloud. APEX/LABOCA, Herschel, and Planck observations
Benjamin Gaczkowski, Thomas Preibisch, Thomas Stanke +7
The Lupus I cloud is found between the Upper-Scorpius (USco) and the Upper-Centaurus-Lupus (UCL) sub-groups of the Sco-Cen OB-association, where the expanding USco H I shell appear…
Are there any first-generation stars in globular clusters today?
Corinne Charbonnel, William Chantereau, Martin Krause +2
Several models compete to explain the abundance properties of stellar populations in globular clusters. One of the main constraints is the present-day ratio of first- and second-ge…