ASCA and BeppoSAX observations of the peculiar X-ray source 4U1700+24/HD154791

(2) Universita' di Bologna; (3) IFCAI/CNR; (4) TeSRE/CNR; (5) ESA/SSD); A. Guarnieri(2); A. Parmar(5); A. Piccioni(2); A. Santangelo(3); A. Segreto(3) ((1) TeSRE/CNR; C. Bartolini (2)

arxiv: astro-ph/0002348 · v1 · submitted 2000-02-17 · 🌌 astro-ph

ASCA and BeppoSAX observations of the peculiar X-ray source 4U1700+24/HD154791

D. Dal Fiume (1) , N. Masetti (1) , C. Bartolini (2) , S. Del Sordo (3) , F. Frontera(4) , A. Guarnieri(2) , M. Orlandini(1) , E. Palazzi(1)

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A. Parmar(5) A. Piccioni(2) A. Santangelo(3) A. Segreto(3) ((1) TeSRE/CNR (2) Universita' di Bologna (3) IFCAI/CNR (4) TeSRE/CNR Universita' di Ferrara (5) ESA/SSD)

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classification 🌌 astro-ph

keywords sourceobservationsx-rayascabepposaxhd154791u1700accretion

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The X-ray source 4U1700+24/HD154791 is one of the few galactic sources whose counterpart is an evolved M star. In X-rays the source shows extreme erratic variability and a complex and variable spectrum. While this strongly suggests accretion onto a compact object, no clear diagnosis of binarity was done up to now. We report on ASCA and BeppoSAX X-ray broad band observations of this source and on ground optical observations from the Loiano 1.5 m telescope.

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ASCA and BeppoSAX observations of the peculiar X-ray source 4U1700+24/HD154791

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