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Author Bhatt, H. ♦ Pandey, J. C. ♦ Kumar, B. ♦ Sagar, R. ♦ Singh, K. P.
Source Aryabhatta Research Institute of Observational Sciences (ARIES)
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics
Subject Keyword Star-X-ray ♦ Binary ♦ Star-Wind
Abstract We present X-ray emission characteristics of the massive O-type stars DH Cep and HD 97434 using archivalXMM-Newton observations. There is no convincing evidence for short-term variability in the X-rayintensity during the observations. However, the analysis of their spectra reveals X-ray structure beingconsistent with two-temperature plasma model. The hydrogen column densities derived from X-rayspectra of DH Cep and HD 97434 are in agreement with the reddening measurements for their correspondinghost clusters NGC 7380 and Trumpler 18, indicating that the absorption by stellar wind is negligible.The X-ray emission from these hot stars is interpreted in terms of the standard instability-drivenwind-shock model.
Part of series newast15-755
Educational Use Research
Education Level UG and PG
Learning Resource Type Article