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EWOCS-III: JWST observations of the supermassive star cluster Westerlund 1
M. G. Guarcello, V. Almendros-Abad, J. B. Lovell +29
The typically large distances, extinction, and crowding of Galactic supermassive star clusters have so far hampered the identification of their very low mass members, required to e…
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey
M. G. Guarcello, E. Flaccomio, J. F. Albacete-Colombo +48
Context. With a mass exceeding several 10^4 solar masses and a rich and dense population of massive stars, supermassive young star clusters represent the most massive star-forming…
Young Stellar Objects in the Massive Star Forming Region W49
Gozde Saral, Joseph L. Hora, Sarah E. Willis +3
We present the initial results of our investigation of the star-forming complex W49, one of the youngest and most luminous massive star forming regions in our Galaxy. We used Spitz…
YSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720
K. Poppenhaeger, A. M. Cody, K. R. Covey +12
We present a time-variability study of young stellar objects in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 micron with the Spitzer Space Telescope; this study is part of…
The Dependence of Protostellar Luminosity on Environment in the Cygnus-X Star-Forming Complex
E. Kryukova, S. T. Megeath, J. L. Hora +7
The Cygnus-X star-forming complex is one of the most active regions of low and high mass star formation within 2 kpc of the Sun. Using mid-infrared photometry from the IRAC and MIP…
Spitzer observations of a circumstellar nebula around the candidate Luminous Blue Variable MWC 930
L. Cerrigone, G. Umana, C. S. Buemi +4
MWC 930 is a star just ~2° above the Galactic plane whose nature is not clear and that has not been studied in detail so far. While a post-Asymptotic Giant Branch (AGB) classificat…