File:The two GHOST spectra (labeled) (noirlab2217h).jpg
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DescriptionThe two GHOST spectra (labeled) (noirlab2217h).jpg |
English: This mosaic shows the two GHOST spectra of HD 222925, a remarkably bright, chemically complex star. This star is a prime example of the type of object that GHOST will investigate. The dark lines in the rainbow are absorption lines — fingerprints of the gasses present in the star, including hydrogen, calcium, and also numerous metals like iron and gold. To the right a number of features from molecules in the Earth’s own atmosphere are seen. Any ground-based observation is subject to contamination from telluric (Earth-originating) sources like water vapor and oxygen. The effect of these lines is normally removed in subsequent steps of the analysis process. |
Date | 20 July 2022, 07:30 (upload date) |
Source | The two GHOST spectra (labeled) |
Author | International Gemini Observatory/NOIRLab/NSF/AURA/GHOST Consortium |
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:00, 10 July 2023 | 8,493 × 4,312 (7.45 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/noirlab2217h.jpg via Commons:Spacemedia |
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Credit/Provider | International Gemini Observatory/NOIRLab/NSF/AURA/GHOST Consortium |
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Source | NSF's NOIRLab |
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Date and time of data generation | 07:30, 20 July 2022 |
Software used | Adobe Photoshop 23.3 (Windows) |
File change date and time | 15:15, 20 July 2022 |
Date and time of digitizing | 22:46, 1 July 2022 |
Date metadata was last modified | 17:15, 20 July 2022 |
Unique ID of original document | xmp.did:dd731638-379b-2445-b67a-32a12ffe0e50 |
Keywords | HD 222925 |
Contact information |
950 North Cherry Ave. Tucson, AZ, 85719 USA |
IIM version | 4 |