The distribution of photometrically selected T Tauri candidates in the outer Galaxy

Astronomy and Astrophysics – Astrophysics

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Scientific paper

We mapped the NIR extinction in the 2^{nd} and 3^{rd} galactic quadrant in the ±30° latitude range covering a ≈10300 square degree area based on the 2MASS Point Source Catalogue. We selected the sources with T Tauri like NIR colours, and investigated their distribution. We describe the variation of the CTT candidate number density as function of galactic latitude and longitude. We searched for CTT candidate clustering and compiled a catalogue of associations found. We found that significant fraction of clusters found are situated in the shells of GIRLs.

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