A large molecular cloud in Lupus far from the Galactic plane

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Carbon Monoxide, Galactic Structure, Interstellar Matter, Molecular Clouds, Milky Way Galaxy, Nebulae, Radial Velocity

Scientific paper

A wide-latitude CO survey of the fourth Galactic quadrant revealed a molecular cloud fairly far from the Galactic plane between b = 3° and 5°.5 at l ≈ 325°, with a radial velocity of -41 km s-1. The near kinematic distance is 2.9 kpc, placing the cloud 150 - 280 pc above the Galactic plane, the largest displacement at which a molecular cloud has yet been detected. The mass of the cloud as derived from the CO observations is ≡105M_sun;. A conspicuous hole in the longitude-velocity distribution of CO is present in the Galactic plane below the cloud.

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