The high density molecular cores near L1551-IRS5 and B335-FIR

Details The high density molecular cores near L1551-IRS5 and B335-FIR The high density molecular cores near L1551-IRS5 and B335-FIR

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...223..258m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 223, no. 1-2, Oct. 1989, p. 258-266.

Astronomy and Astrophysics

Astronomy

14

Density Distribution, Infrared Sources (Astronomy), Molecular Clouds, Star Formation, Carbon Monoxide, Electron Transitions, Emission Spectra, Line Spectra, Stellar Envelopes

Scientific paper

Molecular line maps of the high density gas surrounding the embedded IR sources L1551-IRS5 and B335-IR have been made in the J=2-1 and 3-2 transitions of CS and the J=1-0 and 2-1 transitions of (C-18)O. A compact source of broad line emission is observed close to B335. A compact structure centered on L1551 is also observed. The mass of the structure in L1551 is estimated at 0.3 solar masses. The observations make it doubtful that there is a large scale rotating disk surrounding L1551-IRS5. The results demonstrate that excitation effects are important in determining the morphology of molecular line maps.

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