The interstellar medium towards the Ara OB1 region

The interstellar medium towards the Ara OB1 region

We present high resolution ( R ∼4 km s −1 ) absorption measurements of the interstellar NaI and CaII lines measured towards 14 early-type stars of distance 123 pc–1650 pc, located in the direction of the Ara OB1 stellar cluster. The line profiles can broadly be split into four distinct groupings of...

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Veröffentlicht in:Astrophysics and space science 2008-06, Vol.315 (1-4), p.1-12
Hauptverfasser: Henderson, Christopher D., Welsh, Barry Y., Hearnshaw, John B.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Stars
Stars & galaxies
Studies
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Zusammenfassung:We present high resolution ( R ∼4 km s −1 ) absorption measurements of the interstellar NaI and CaII lines measured towards 14 early-type stars of distance 123 pc–1650 pc, located in the direction of the Ara OB1 stellar cluster. The line profiles can broadly be split into four distinct groupings of absorption component velocity, and we have attempted to identify an origin and distance to each of these interstellar features. For gas with absorption covering the velocity range −10 km s −1 < V helio
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-008-9780-0