국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	The X-Ray Evolution of the Symbiotic Star V 407 Cygni During Its 2010 Outburst
저자	Mukai, K.;; Nelson, T.;; Chomiuk, L.;; Donato, D.;; Sokoloski, J.
Keyword	CYGNUS CONSTELLATION;; DETONATION WAVES;; EJECTA;; PHOTOSPHERE;; SHOCK WAVES;; SPECTRA;; SYMBIOTIC STARS;; WAVE INTERACTION;; X RAYS
URL	http://hdl.handle.net/2060/20110023528
보고서번호	GSFC.JA.5438.2011
발행년도	2011
출처	NTRS (NASA Technical Report Server)
ABSTRACT	We present a summary of Swift and Suzaku X-ray observations of the 2010 nova outburst of the symbiotic star, V 407 Cyg. The Suzaku spectrum obtained on day 30 indicates the presence of the supersoft component from the white dwarf surface, as well as optically thin component from the shock between the nova ejecta and the Mira wind. The Swift observations then allow us to track the evolution of both components from day 4 to day 150. Most notable is the sudden brightening of the optically think component around day 20. We identify this as the time when the blast wave reached the immediate vicinity of the photosphere of the Mira. We have developed a simplified model of the blast wave-wind interaction that can reproduce the gross features of the X-ray evolution of V407 Cyg. If the model is correct, the binary separation is likely to be large and the mass loss rate of the Mira is likely to be relatively low.