XMM-Newton Image and Lightcurves of YSOs in the rho Oph Star Forming Region
Minimum credit line: Image courtesy of Salvatore Sciortino and ESA. (for details, see Conditions of Use).
Credit: ESA/XMM-Newton, CC BY-SA 3.0 IGO
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| About this Image |
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In the right panel the image shows ρ Ophiuchi, a relatively young and close star-forming region. The Deep Rho Oph XMM-Newton Observation (DROXO) project examines spectroscopic variability in YSOs in the ρ Ophiuchi region. The image is false-coloured by energy band such that objects emitting photons of different energies appear in different colours. The lightcurves (left panel) show the X-ray variability of the YSOs IRS55/GY380, WL20/GY240, DoAr25/GY17 and WL2/GY128 (top to bottom). The count rate (counts/ks) is plotted against the time (in ks) after the start of the first pn exposure. The thick red line shows the background subtracted source light curve. The investigators observed the following behaviour: IRS55/GY380 (top panel) shows a complex "modulated¨ flare; WL20/GY240 and DoAr25/GY17 (middle panels) show a smooth modulation; WL2/GY128 (bottom panel) shows flares.
Investigator(s): S. Sciortino, I. Pillitteri, F. Damiani, E. Flaccomio, G. Micela, B. Stelzer, F. Favata, G. Giardino, N. Grosso, T. Montmerle, F. Palla & L. Testi
| For More Information |
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- Read the Journal article
- Detailed description of this image
- Query XSA archive for XMM-Newton data in the field of rho Ophiuchi
- Astronomical database entries for rho Ophiuchi;
- Query NED for more images about rho Ophiuchi
- Query SIMBAD for more rho Ophiuchi data
- For unfamiliar terms, visit the XMM-Newton Astronomical Glossary
| Instrument | EPIC | ||
| Observing Mode | Full Frame | ||
| Filter | Medium | ||
| Date of Observation | 2005-03-16 | ||
| Image size | 30.00 x 30.00 arcmin | ||
| Detailed Caption | The MOS and pn cameras were operated in full frame mode, with medium filters. The total exposure time needed to complete the observations was 500 ks of which about 1/5 was affected by very high background level. These exposures were taken over the period March 8th - March 16th 2005. | ||
| Alternate Resolutions | (Help) |
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