In the past twenty years, the reconnaissance of 12CO and 13CO emission in the Milky Way
by single-dish millimeter-wave telescopes has expanded our view and understanding of …

An observational review on HI in the Galaxy is presented. Attention is given to observations
of interstellar atomic hydrogen from Lyman-alpha and the 21-cm line through indirect tracers …

We present a uniform catalog of accurate distances to local molecular clouds informed by
the Gaia DR2 data release. Our methodology builds on that of Schlafly et al. First, we infer …

The European Space Agency's Planck satellite, dedicated to studying the early Universe
and its subsequent evolution, was launched 14 May 2009 and has been scanning the …

Estimates of the mass and age of young stars from their location in the HR diagram are
limited by not only the typical observational uncertainties that apply to field stars, but also by …

Dust is a ubiquitous feature of the cosmos, impinging directly or indirectly on most fields of
modern astronomy and astrophysics. Dust in the Galactic Environment, Second Edition …

Distance measurements to molecular clouds are important but are often made separately for
each cloud of interest, employing very different data and techniques. We present a large …

ABSTRACT A summary of global properties and an evaluation of the equilibrium state of
molecular regions in the outer Galaxy are presented from the decomposition of the FCRAO …

Images from the FCRAO CO Survey of the Outer Galaxy and a description of the calibration
and processing of the data are presented. The survey is comprised of 1,696,800 12 CO J= 1 …

We suggest that molecular clouds can be formed on short timescales by compressions from
large scale streams in the interstellar medium (ISM). In particular, we argue that in the …