The Scorpius-Centaurus OB Association and the Origin of the Local Bubble

Details The Scorpius-Centaurus OB Association and the Origin of the Local Bubble The Scorpius-Centaurus OB Association and the Origin of the Local Bubble

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.1103m&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #11.03; Bulletin of the American Astronomical Society, Vol. 33, p.1323

Astronomy and Astrophysics

Astronomy

Scientific paper

The Sun is located inside the Local Bubble, a region of the ISM which is the likely result of several nearby SN explosions within the last 10 Myr. We show here that part of the Scorpius-Centaurus OB association (Sco-Cen OB) was located closer to the present position of the Sun 5-7 Myr ago than today. Evolutionary synthesis models indicate that the association must have experienced ~ 20 SNe in the last 10-12 Myr, a prediction that is supported by the detection of four or five runaway stars escaping from it. The ~ 6 SNe produced by the Lower Centaurus Crux subgroup of Sco-Cen OB are likely responsible for the creation of the Local Bubble. Support for this work was provided by grant 82280 from the STScI DDRF.

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