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Observations of the J=1-0 and J=2-1 Lines of 12CO in L1551: Evidence for Anisotropic Mass Loss

Published online by Cambridge University Press:  14 August 2015

R. L. Snell ,
R. B. Loren  and
R. L. Plambeck
R. L. Snell
Affiliation:
(University of Texas-Austin)
R. B. Loren
Affiliation:
(University of Texas-Austin)
R. L. Plambeck
Affiliation:
(University of California-Berkeley)

Extract

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Observations of the J=1-0 lines of 12CO have been made to determine the extent and nature of the broad secondary velocity feature in L1551 (S239) first detected by Knapp et al. (1976). L1551 is associated with an extended Herbig-Haro object, HH102 (Strom et al. 1974), and two compact HH objects, HH28 and HH29 (Herbig 1974). Two nearby stars, HL Tau and XZ Tau, show extreme T-Tauri characteristics. The broad CO velocity component is seen toward HH102. Strom et al. (1976) have detected an infrared source near the HH objects which has a luminosity and infrared colors consistent with a late B star reddened by roughly 20 magnitudes of visual extinction (Snell 1979). The infrared source lies in the direction of the core of L1551, which has a density of 105 cm-3 (Loren et al. 1979; Snell 1979). The infrared source is likely to be embedded in this dense core.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 173 - 174
Copyright
Copyright © Reidel 1980 

References

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