| | |
| | |
Stat |
Members: 3645 Articles: 2'504'928 Articles rated: 2609
25 April 2024 |
|
| | | |
|
Article overview
| |
|
Summary of Recent Progress in Understanding HVCs | Bart P. Wakker
; Hugo van Woerden
; Brad K. Gibson
; | Date: |
5 Dec 1998 | Subject: | astro-ph | Affiliation: | Wisconsin), Hugo van Woerden (Groningen), Brad K. Gibson (Colorado | Abstract: | The study of high-velocity clouds has progressed much since the appearance of the review article by Wakker & van Woerden (1997), less than two years ago. Much of this progress is described in these workshop proceedings. Here we update the review article, summarizing the topics discussed at the workshop as well as covering the recent literature. We follow the outline of the review, describing HI properties in Sect. 2 and 3, interactions between HVCs and other gas in Sect. 4, observations at wavelengths other than 21-cm in Sects. 5 and 6, absorption-line studies of metallicities and distances in Sects. 7 and 8, extra-galactic HVCs in Sect. 9, the Magellanic Stream in Sect. 10, and a discussion of HVC origins in Sect. 11. Key contributions of the past two years include (a) the first determination of a distance bracket for an HVC: d=4-10 kpc for Complex A (van Woerden et al. 1999); (b) the first determinations of a true metallicity: 1/4 solar for HVC 287+22+240 (Lu et al. 1998), and 1/10 solar Complex~C (Wakker et al. 1999); (c) the recognition of a leading counterpart to the Magellanic Stream (Gardiner & Noguchi 1996; Lu et al. 1998; Putman et al. 1998), indicative of a tidal origin; (d) the quickly growing number of optical emission line observations (primarily H-alpha) of HVCs, led by Tufte et al. (1998) and Bland-Hawthorn et al. (1998); and (e) the proposal by Blitz et al. (1999) that HVCs are intergalactic remnants of the formation of the Local Group. | Source: | arXiv, astro-ph/9901029 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |