Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-02-17
Astronomy and Astrophysics
Astrophysics
5 pages, 4 figures, uses aipproc.sty, to appear in Proceedings of the Fifth Compton Symposium
Scientific paper
10.1063/1.1303210
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.
Bartolini Corrado
Fiume Daniele Dal
Frontera Filippo
Guarnieri Adriano
Masetti Nicola
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