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Figure 1: Combined EPIC MOS1+MOS2 image of the field around SU Aur. |
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Figure 2: Combined MOS1+MOS2 light curve of SU Aur, binned in 600 s intervals. The intervals where time-dependent spectral analysis has been performed are indicated by horizontal segments. |
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Figure 3:
MOS1 spectrum of SU Aur for the entire observation. The MOS2
spectrum is very similar and is not shown for clarity. The best-fit model
from the joint MOS1+MOS2 fit is also shown. In the bottom panel the
residuals in units of ![]() |
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Figure 4: Co-added RGS1 and RGS2 spectra of SU Aur. For a better display the summed spectrum has been rebinned with a bin size of 0.04 Å. The dashed line shows the adopted continuum level. The main lines identified in the spectrum are also indicated. Note that the apparent weakness of the spectrum between 10.5 and 13.5 Å is due to the lack of RGS1 data in this wavelength range because of the failure of CCD 7. |
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Figure 5: Emission measure distribution of SU Aur derived from the RGS analysis. Unconstrained EMD components are indicated with a dashed line. The results of the 3-temperature MOS fit are also plotted for comparison ( diamonds). |
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Figure 6:
Comparison between the observed and predicted fluxes for the lines
used in the EMD reconstruction. Points relative to lines formed at the same
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Figure 7: Elemental abundances of SU Aur, relative to the solar abundances of Anders & Grevesse (1989), plotted in order of increasing FIP. Filled diamonds and open squares refer to the abundances derived from RGS and MOS, respectively. |
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Figure 8: MOS1+MOS2 light curve of HD 31305. The intervals used for time-dependent spectral analysis are also shown. |
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Figure 9: Comparison of the EMD derived for SU Aur (black thick line) with that of the WTTS HD 283572 (red thin line) derived by Scelsi et al. (2005). |
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