A Systematic Change with Time in the Size of Betelgeuse

Details A Systematic Change with Time in the Size of Betelgeuse A Systematic Change with Time in the Size of Betelgeuse

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...697l.127t&link_type=abstract

The Astrophysical Journal Letters, Volume 697, Issue 2, pp. L127-L128 (2009).

Astronomy and Astrophysics

Astronomy

7

Stars: General, Stars: Individual: Betelgeuse, Techniques: Interferometric

Scientific paper

The diameter of Betelgeuse (α Orionis) has been measured at a
wavelength of 11.15 μm using the Infrared Spatial Interferometer over
the past 15 years. During this 1993-2009 time period the star's size has
decreased systematically by 15%.

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