OB associations are unbound groups of young stars made prominent by their bright OB
members, and have long been thought to be the expanded remnants of dense star clusters …

Stellar winds and repeated supernovae from an OB association will create a cavity of
coronal gas in the interstellar medium, with radius greater than 100 pc, surrounded by a …

HI shells and supershells ADS Classic is now deprecated. It will be completely retired in
October 2019. This page will automatically redirect to the new ADS interface at that point …

The present photographic representations of the combinations of two HI surveys and high
contrast photographs for particular velocities (made in order to exhibit weak HI features) …

We have used the Hawaii Imaging Fabry-Perot Interferometer (HIFI) at the CFH 3.6 m
telescope to map Hα+[NII] λλ6548, 6583 emission-line profiles across the entire edge-on …

We present an analysis of the properties of H i holes detected in 20 galaxies that are part of"
The H i Nearby Galaxy Survey." We detected more than 1000 holes in total in the sampled …

We present the statistical properties of the Cold Clump Catalogue of Planck Objects (C3PO),
the first all-sky catalogue of cold objects, in terms of their spatial distribution, dust …

Orion's Cloak - A rapidly expanding shell of gas centered on the Orion OB1 assoc ADS Classic
is now deprecated. It will be completely retired in October 2019. This page will automatically …

Pervasive turbulence and fractal structure in the interstellar gas imply the existence of large
holes and gaps, filling≥ 80% of the volume, which may be identified with the intercloud …

We perform a detailed investigation of sources from the Cold Cores Catalogue of Planck
Objects (C3PO). Our goal is to probe the reliability of the detections, validate the separation …