Near Infared Speckle Interfrometry of LK-H-ALPHA-233

Details Near Infared Speckle Interfrometry of LK-H-ALPHA-233 Near Infared Speckle Interfrometry of LK-H-ALPHA-233

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...271..535l&link_type=abstract

Astronomy and Astrophysics, Vol.271, NO. 2/APR, P. 535, 1993

Astronomy and Astrophysics

Astrophysics

18

Stars: Individual: Lk Hα 233, Ism: Dust, Extinction, Stars: Pre-Main-Sequence, Stars: Circumstellar, Techniques: Interferometric, Polarimetric

Scientific paper

Near-infrared speckle interferometry shows that Lk Hoc 233 has a bright scattering halo about 1000 AU in size positioned symmetrically around the central star. This halo can be understood as inward continuation of the much more extended optical reflection nebula. The scattering particles in the halo must be larger than is typical for the interstellar medium. The intrinsic infrared colours of Lk Hα 233 are significantly altered by the subtraction of the halo from the system. The extinction to the central star appears to be underestimated because of the neglect of scattering.

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