The Origin of the Local Bubble | Zendy

J. Maíz Apellániz | Zendy

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The Origin of the Local Bubble

Author(s) -

J. Maíz Apellániz

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/324016

Subject(s) - supernova , physics , stars , astrophysics , centaurus a , myr , interstellar medium , bubble , astronomy , local bubble , near earth supernova , supernova remnant , galaxy , active galactic nucleus , biochemistry , chemistry , genome , mechanics , gene

The Sun is located in a low-density region of the interstellar mediumpartially filled with hot gas that is the likely result of several nearbysupernova explosions within the last 10 Myr. Here we use astrometric data toshow that part of the Scorpius-Centaurus OB association was located closer tothe present position of the Sun 5-7 Myr ago than today. Evolutionary synthesismodels indicate that the association must have experienced ~20 supernovaexplosions in the last 10-12 Myr, a prediction that is supported by thedetection of four or five runaway stars escaping from it. The ~6 SNe producedby the Lower Centaurus Crux subgroup are likely responsible for the creation ofthe Local Bubble.

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