Soft X-ray Emission from the Central Star of the Dumbbell Nebula
Abstract
The hot central star of the well-studied planetary nebula M 27 (a.k.a. Dumbbell Nebula) is a strong source of soft X-ray photons. As part of the Chandra Planetary Nebulae Survey (ChanPlaNS), the central star was targeted with the back-illuminated (S3) chip of the Chandra ACIS-S array. All of the central star photons detected in this observation have photon energies below 0.3 keV, where the calibration of Chandra is not well-constrained. Assuming the X-ray spectrum emerges from the hot photosphere, we used the X-ray spectrum and the well-known central star properties to constrain the relevant calibration functions (effective area curve and response matrix) below 0.3 keV. In this poster, we present our methodology, results, and guidelines that will enable the use of the central star as a soft X-ray calibration source.
- Publication:
-
American Astronomical Society Meeting Abstracts #224
- Pub Date:
- June 2014
- Bibcode:
- 2014AAS...22412105M