One-kiloparsec expanding cylinder of H i gas around the Galactic Center
Abstract We report the discovery of an expanding cylinder of H i gas of radius 1 kpc and vertical extent 800 pc by analyzing the 21 cm line survey data from the literature. The cylinder is expanding at 150 km s−1, rotating at 100 km s−1, and is interpreted as due to a high-velocity conical wind from...
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| Veröffentlicht in: | Publications of the Astronomical Society of Japan 2022-08, Vol.74 (4), p.L23-L26 |
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| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Abstract
We report the discovery of an expanding cylinder of H i gas of radius 1 kpc and vertical extent 800 pc by analyzing the 21 cm line survey data from the literature. The cylinder is expanding at 150 km s−1, rotating at 100 km s−1, and is interpreted as due to a high-velocity conical wind from the Galactic Center. The total mass of the cylinder is estimated to be ∼8.5 × 105M⊙ and kinetic energy ∼3 × 1053 erg. |
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| ISSN: | 0004-6264 2053-051X |
| DOI: | 10.1093/pasj/psac034 |