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A trio of giant planets orbiting evolved star HD 184010
Izumiura, Hideyuki; Sato, Bun'ei; Yoshida, Michitoshi +11 more
We report the discovery of a triple-giant-planet system around an evolved star HD 184010 (HR 7421, HIP 96016). This discovery is based on observations from Okayama Planet Search Program, a precise radial velocity survey, undertaken at Okayama Astrophysical Observatory between 2004 April and 2021 June. The star is K0 type and located at the beginni…
Discovery of a new supergiant fast X-ray transient MAXI J0709-159 associated with the Be star LY Canis Majoris
Liu, Zhu; Kawai, Nobuyuki; Shidatsu, Megumi +10 more
We report on the discovery of a new supergiant fast X-ray transient (SFXT), MAXI J0709-159, and its identification with LY CMa (also known as HD 54786). On 2022 January 25, a new flaring X-ray object, named MAXI J0709-159, was detected by the Monitor of All-sky X-ray Image (MAXI). Two flaring activities were observed in two scans ~3 hr apart, wher…
X-ray hot spots in the eastern ear of the supernova remnant W 50 and the microquasar SS 433 system
Katsuda, Satoru; Sato, Toshiki; Uchiyama, Hideki +10 more
We examined the X-ray and radio spatial structure at the eastern ear of the W 50/SS 433 system to clarify a characteristic feature of the termination region of the SS 433 jet, and found that a hot spot ahead of the filament structure, which is considered to be a terminal shock of the SS 433 eastern jet, is clearly different from a single point sou…