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- Center for Astrophysics Harvard & SmithsonianUS325 papers
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15 papers · 2 filters
Massive Field Stars and the Stellar Clustering Law
M. S. Oey, N. L. King, J. Wm. Parker
The distribution of N*, the number of OB stars per association or cluster, appears to follow a universal power-law form in the local Universe. We evaluate the distributio…
Intergalactic HII Regions Discovered in SINGG
E. V. Ryan-Weber, G. R. Meurer, K. C. Freeman +3
A number of very small isolated HII regions have been discovered at projected distances up to 30 kpc from their nearest galaxy. These HII regions appear as tiny emission line objec…
Near-Infrared Integral Field Spectroscopy of Star-Forming Galaxies
Daniel A. Dale, Helene Roussel, Alessandra Contursi +9
The Palomar Integral Field Spectrograph was used to probe a variety of environments in nine nearby galaxies that span a range of morphological types, luminosities, metallicities, a…
The Ofpe/WN9 stars in M33
Luciana Bianchi, Ralph Bohlin, Philip Massey
We present HST/STIS Ultraviolet spectra of the six known Ofpe/WN9 stars (``slash stars'') in M33. These stars were selected for showing the characteristics of the Ofpe/WN9 class fr…
The Evolution of Massive Stars. I. Red Supergiants in the Magellanic Clouds
Philip Massey, K. A. G. Olsen
We investigate the red supergiant (RSG) content of the SMC and LMC using multi-object spectroscopy on a sample of red stars previously identified by {\it BVR} CCD photometry. We ob…
Procedures, Resources, and Selected Results of the Deep Ecliptic Survey
M. W. Buie, R. L. Millis, L. H. Wasserman +8
The Deep Ecliptic Survey is a project whose goal is to survey a large area of the near-ecliptic region to a faint limiting magnitude (R ~ 24) in search of objects in the outer sola…