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H I in the Galaxy

Article de synthese sur l'hydrogene dans la Galaxie traitant des observations a 21 cm, des observations UV, des traceurs indirectes de HI, et de sa structure verticale
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GLIMPSE. I. An SIRTF Legacy Project to Map the Inner Galaxy

The Galactic Legacy Infrared Mid‐Plane Survey Extraordinaire (GLIMPSE), a Space Infrared Telescope Facility (SIRTF) Legacy Science Program, will be a fully sampled, confusion‐limited infrared survey…
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The Wavelength Dependence of Interstellar Extinction from 1.25 to 8.0 μm Using GLIMPSE Data

We determine and tabulate A[λ]/AK, the wavelength dependence of interstellar extinction, in the Galactic plane for 1.25 μm ≤ λ ≤ 8.0 μm along two lines of sight: l = 42° and 284°. The first is a…
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The large‐scale HI structure of the Small Magellanic Cloud

We combine new Parkes telescope observations of neutral hydrogen (Hi) in the Small Magellanic Cloud (SMC) with an Australia Telescope Compact Array (ATCA) aperture synthesis mosaic to obtain a set of…
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First GLIMPSE Results on the Stellar Structure of the Galaxy

The GLIMPSE (Galactic Legacy Mid-Plane Survey Extraordinaire) Point Source Catalog of ~30 million mid-infrared sources toward the inner Galaxy, 10° ≤ |l| ≤ 65° and |b| ≤ 1°, was used to determine the…
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The VLA Galactic Plane Survey

The VLA Galactic Plane Survey (VGPS) is a survey of H I and 21 cm continuum emission in the Galactic plane between longitude 18° and 67° with latitude coverage from |b| < 1.°3 to |b| < 2.°3. The…
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Resolving the Kinematic Distance Ambiguity toward Galactic H II Regions

Kinematic distance determinations in the inner Galaxy are hampered by the near-far kinematic distance ambiguity. Here we resolve the ambiguity for 49 H II region complexes with known…
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The Southern Galactic Plane Survey: H I Observations and Analysis

We describe the H I component of the Southern Galactic Plane Survey (SGPS). The SGPS is a large-scale project to image at arcminute resolution the H I spectral line and 21 cm continuum emission in…
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Milky Way Kinematics. I. Measurements at the Subcentral Point of the Fourth Quadrant

We use atomic hydrogen (H I) data from the Southern Galactic Plane Survey to study the kinematics of the fourth quadrant of the Milky Way. By measuring the terminal velocity as a function of…
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Radio Polarization from the Inner Galaxy at Arcminute Resolution

The Southern Galactic Plane Survey (SGPS) is an H I and 1.4 GHz continuum survey of the fourth quadrant of the Galaxy at arcminute resolution. We present here results on linearly polarized continuum…
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