H I observations of the asymptotic giant branch star X Herculis: Discovery of an extended circumstellar wake superposed on a compact high-velocity cloud
We report H I 21 cm line observations of the asymptotic giant branch (AGB) star X Her obtained with the Robert C. Byrd Green Bank Telescope (GBT) and the Very Large Array. We have unambiguously detected H I emission associated with the circumstellar envelope of the star, with a mass totaling M[subsc...
Main Authors: | Libert, Y., Gerard, E., Le Bertre, T., Johnson, M. C., Dame, T. M., Matthews, Lynn D. |
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Other Authors: | Haystack Observatory |
Format: | Article |
Language: | en_US |
Published: |
IOP Publishing
2015
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Online Access: | http://hdl.handle.net/1721.1/92879 |
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