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- Herzberg Institute of AstrophysicsCA876 papers
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12 papers · 2 filters
The JCMT Gould Belt Survey: Evidence for radiative heating in Serpens MWC 297 and its influence on local star formation
D. Rumble, J. Hatchell, R. A. Gutermuth +61
We present SCUBA-2 450micron and 850micron observations of the Serpens MWC 297 region, part of the JCMT Gould Belt Survey of nearby star-forming regions. Simulations suggest that r…
Weak Galactic halo--dwarf spheroidal connection from RR Lyrae stars
Giuliana Fiorentino, Giuseppe Bono, Matteo Monelli +6
We discuss the role that dwarf galaxies may have played in the formation of the Galactic halo (Halo) using RR Lyrae stars (RRL) as tracers of their ancient stellar component. The c…
Revealing H2D+ depletion and compact structure in starless and protostellar cores with ALMA
R. K. Friesen, J. Di Francesco, T. L. Bourke +4
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of the submillimeter dust continuum and H2D+ 1_{10}-1_{11} emission toward two evolved, potentially prot…
The origin of organic emission in NGC 2071
T. A. van Kempen, C. McCoey, S. Tisi +2
Context: The physical origin behind organic emission in embedded low-mass star formation has been fiercely debated in the last two decades. A multitude of scenarios have been propo…
MOST light-curve analysis of the gamma Dor pulsator HR 8799, showing resonances and amplitude variations
Á. Sódor, A. -N. Chené, P. De Cat +13
Context: The central star of the HR 8799 system is a gamma Doradus-type pulsator. The system harbours four planetary-mass companions detected by direct imaging, and is a good solar…
The halo+cluster system of the Galactic globular cluster NGC1851
A. F. Marino, A. P. Milone, D. Yong +17
NGC1851 is surrounded by a stellar component that extends more than ten times beyond the tidal radius. Although the nature of this stellar structure is not known, it has been sugge…