Spatial distribution of stars in NGC 6530, with arrows to indicate the direction they are moving. The arrows have been color coded based on the direction they are pointing, so that bulk velocity gradients (e.g., expansion) will produce a visible color gradient. |
Fig 1. Chandra X-ray Image of NGC 6231. |
Fig 2. Comparison of surface density models (gray lines) to the observed distribution of stars in NGC 6231 (black lines). |
Fig 3. Size versus mass for NGC 6231 (blue point), clusters and subclusters from MYStIX (black points), and rare, extreme starburst clusters (red points). |
(Co-PIs Feigelson & Townsley)
Adaptively smoothed maps of young stars in the different regions. |
MYStIX is a study of 20 of the most massive star-forming regions within 3.6 kpc of the solar system, which has yielded a catalog of >30,000 young stars -- including some of the largest and cleanest samples of cluster members for many of these regions. Catalog papers and science results are listed at the MYStIX public website (http://www.astro.psu.edu/mystix). Science Papers: Preliminary results presented at the "Labyrinth of Star Formation" conference in Crete, Greece: Proceedings paper |
The W40 (= Westerhout 40) star-forming region (also known in the literature as the Aquila star-forming region, part of the Serpens molecular cloud) is one of the nearest massive star-forming regions in the Galaxy. Observations with the Chandra X-ray Observatory revealed a cluster of about 600 young stars. |
(PI Getman)
Spitzer image of IC 5146. |
The SFiNCs project is a follow-up to MYStIX concentrating on star-forming regions that are lower mass and nearer. I was PI of the Chandra proposal to obtain X-ray observations of the nebula IC 5146 (pictured) for the SFiNCs project. SFiNCs provides the best catalogs to date for these regions, available online from this url. |