Diffraction-limited infrared observations of the young star Z CMa

Details Diffraction-limited infrared observations of the young star Z CMa Diffraction-limited infrared observations of the young star Z CMa

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98.1394k&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, Oct. 1989, p. 1394-1397.

Astronomy and Astrophysics

Astronomy

19

Early Stars, Infrared Astronomy, Speckle Interferometry, Stellar Structure, Accretion Disks, Companion Stars, Energy Transfer, Stellar Envelopes, T Tauri Stars

Scientific paper

Speckle interferometric observations of Z CMa show a highly elongated light distribution approximately 0.1 arcsec in size at 2.2 microns. The elongation may be the result of light scattered close to the star by a jetlike particle distribution or, alternatively, indicate the presence of an infrared companion similar to that seen toward T Tau. The companion would be cool (2000 K), large (300 solar radii), and more luminous (1000 solar luminosities) than the T Tau companion. If it represents a young object in the initial stages of accretion, its lifetime in the present state is only a few hundred years.

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