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The X-Ray Spectrum of a Planetary Nebula at High Resolution: Chandra Gratings Spectroscopy of BD+30 3639
Young Sam Yu, Raanan Nordon, Joel H. Kastner +3
We present the results of the first X-ray gratings spectroscopy observations of a planetary nebula (PN), the X-ray-bright, young BD+30 3639. We observed BD+30 3639 for a total of 3…
Abundance variations and first ionization potential trends during large stellar flares
R. Nordon, E. Behar
The Solar First Ionization Potential (FIP) effect, where low-FIP elements are enriched in the corona relative to the photosphere, while high-FIP abundances remain unchanged, has be…
A high-velocity transient outflow in Eta Carinae
Ehud Behar, Raanan Nordon, Noam Soker
We analyze velocity profiles of the X-ray spectral lines emitted by the Eta Carinae stellar binary at four epochs, just before the X-ray minimum (associated with periastron) and mo…
Six Large Coronal X-ray Flares Observed With Chandra
R. Nordon, E. Behar
A study of the six largest coronal X-ray flares in the Chandra archive is presented. The flares were observed on II Peg, OU And, Algol, HR 1099, TZ CrB and CC Eri, all with the Hig…
High-resolution X-ray Spectroscopy of BD +30 3639
Joel H. Kastner, Young Sam Yu, John Houck +3
We present preliminary results from the first X-ray gratings spectrometer observations of a planetary nebula (PN). We have used the Chandra X-ray Observatory Low Energy Transmissio…
A hot transient outflow from eta Carinae
Ehud Behar, Raanan Nordon, Eyal Ben-Bassat +1
eta Carinae is a stellar binary system with a period of 5.54 years. It harbors one of the brightest and most massive stars in our galaxy. This paper presents spectroscopic evidence…