|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Rejection of the C7- Diffuse Interstellar Band Hypothesis | | B. J. McCall
; J. Thorburn
; L. M. Hobbs
; T. Oka
; D. G. York
; | | Date: |
20 Jun 2001 | | Subject: | astro-ph | | Abstract: | Using the new high resolution (~ 8 km/s) echelle spectrograph on the 3.5-m telescope at the Apache Point Observatory, we have begun a high sensitivity survey of the diffuse interstellar bands in a large sample of reddened stars. Now that we are two years into this long-term survey, our sample includes over 20 reddened stars which show at least one of the DIBs that had been suggested to be caused by C7-, based on the gas phase measurement of the C7- spectrum by J. P. Maier’s group. The high quality astronomical data from this larger sample of stars, along with the spectroscopic constants from the new laboratory work recently reported by Maier’s group, have enabled us to examine more carefully the agreement between C7- and the DIBs. We find that none of the C7- bands matches the DIBs in wavelength or expected profile. One of the DIBs (lambda5748) attributed to C7- is actually a stellar line. The two strongest DIBs attributed to C7- (lambda 6270 and lambda4964) do not vary together in strength, indicating that they do not share the same carrier. On the whole, we find no evidence supporting the hypothesis that C7- is a carrier of the diffuse interstellar bands. | | Source: | arXiv, astro-ph/0106370 | | 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:
| |
REGISTER