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The origin of Scorpius X-1

By SpaceRef Editor
January 30, 2003
Filed under , ,

Astrophysics, abstract

From: Felix Mirabel <>
Date: Wed, 29 Jan 2003 15:11:52 GMT (576kb)

The origin of Scorpius X-1

I. Felix Mirabel,
Irapuan Rodrigues

Comments: 4 pages, 1 figure. Animation and high resolution figures can be
retrived from the NRAO press release:
this http URL

Journal-ref: Astronomy & Astrophysics, 398, L25–L28 (2003)

We have used multi-wavelength observations of high precision to derive the
space velocity and compute the orbit around the Galactic Centre of the
prototype X-ray binary Scorpius X-1. An origin in the local spiral arm of the
Milky Way is ruled out. The galactocentric kinematics of Scorpius X-1 is
similar to that of the most ancient stars and globular clusters of the inner
Galactic halo. Most probably, this low-mass X-ray binary was formed by a close
encounter in a globular cluster. However, it cannot be ruled out that a natal
supernova explosion launched Scorpius X-1 into an orbit like this from a birth
place in the galactic bulge. In any case, the Galactocentric orbit indicates
that Scorpius X-1 was formed more than 30 Myrs ago.

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References and citations for this submission:

SLAC-SPIRES HEP (refers to ,
cited by, arXiv reformatted)

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/abs (/+), /0301,

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