XMM-Newton RGS Spectrum of AB Dor
Minimum credit line: Image courtesy of Jorge Sanz-Forcada and ESA. (for details, see Conditions of Use).
Credit: ESA/XMM-Newton, CC BY-SA 3.0 IGO
The image above can be displayed at full size and may be downloaded by clicking the image above.
| About this Image |
|---|
RGS 1 first order spectrum of the young active star AB Dor (K1 IV-V) from the revolution #091 observation. The dashed line represents the continuum predicted by the EMD model. A false continuum is created by the extended instrumental line profiles. The coronae of active stars show very rich emission line spectra, with up to ~60 lines identified in the RGS spectrum of AB Dor.
Investigator(s): J. Sanz-Forcada, A. Maggio, and G. Micela
| For More Information |
|---|
- Read the Journal article
- Detailed description of this image
- Query XSA archive for XMM-Newton data in the field of AB Dor
- Astronomical database entries for AB Dor;
- Query NED for more images about AB Dor
- Query SIMBAD for more AB Dor data
- For unfamiliar terms, visit the XMM-Newton Astronomical Glossary
| Instrument | RGS | ||
| Observing Mode | Spectroscopy (HCR) | ||
| Filter | N/A | ||
| Date of Observation | 2000-06-07 | ||
| Detailed Caption | As shown in the spectrum, the elements present in the corona can be identified. From the emission lines the investigators derived the coronal chemical abundances. They found that the depletion seen in the coronal abundances differed from the values in the solar photosphere, and that the difference depends on the first ionization potential. A plasma pressure which increases steeply with temperature is implied. The interpretation of the observations is a corona of families of magnetic loops shorter than 1 stellar radius which occupy a small fraction of the stellar surface.
This spectrum was taken using the RGS1 instrument on 7th June 2000, in a 59 ks exposure. The RGS was operated in High Event Rate mode with SES. |
||
| Alternate Resolutions | (Help) |
|---|
This image is available in the following downloadable versions: Higher resolution versions of this image may be available, please contact the XMM-Newton HelpDesk.
Search the Image Gallery
To search the Image Gallery for a particular object, fill in the object name in the box below and click the Submit button.To search the Image Gallery for other images, fill in any of the fields below and click the Submit button.
For more search options, please use our Advanced Search form.