Search Publications
Star Formation Across the W3 Complex
Tapia, Mauricio; Román-Zúñiga, Carlos G.; Ybarra, Jason E. +3 more
We present a multi-wavelength analysis of the history of star formation in the W3 complex. Using deep, near-infrared ground-based images combined with images obtained with Spitzer and Chandra observatories, we identified and classified young embedded sources. We identified the principal clusters in the complex and determined their structure and ex…
Pursuing the Planet-Debris Disk Connection: Analysis of Upper Limits from the Anglo-Australian Planet Search
Wittenmyer, Robert A.; Marshall, Jonathan P.
Solid material in protoplanetary disks will suffer one of two fates after the epoch of planet formation; either being bound up into planetary bodies, or remaining in smaller planetesimals to be ground into dust. These end states are identified through detection of sub-stellar companions by periodic radial velocity (or transit) variations of the st…
An Emerging Wolf-Rayet Massive Star Cluster in NGC 4449
Johnson, Kelsey E.; Indebetouw, Rémy; Reines, Amy E. +1 more
We present a panchromatic investigation of the partially embedded, emerging massive cluster Source 26 (=S26) in NGC 4449 with optical spectra obtained at Apache Point Observatory and archival Hubble, Spitzer, and Herschel 5 Space Telescope images. First identified as a radio continuum source with a thermal component due to ionized mater…
The Identification of Extreme Asymptotic Giant Branch Stars and Red Supergiants in M33 With 24 µm Variability
Clayton, Geoffrey C.; Engelbracht, Charles W.; Srinivasan, Sundar +2 more
We present the first detection of 24 µm variability in 24 sources in the Local Group galaxy M33. These results are based on 4 epochs of Multiband Imaging Photometer for Spitzer observations, which are irregularly spaced over ∼ 750 days. We find that these sources are constrained exclusively to the Holmberg radius of the galaxy, which increas…
Erratum: “The Herschel Inventory of the Agents of Galaxy Evolution (Heritage) in the Magellanic Clouds, a Herschel Open Time Key Program” (2013, AJ, 146, 62)
Poglitsch, A.; van Loon, J. Th.; Bernard, J. -P. +52 more