Water masers in the L1448C outflow

Details Water masers in the L1448C outflow Water masers in the L1448C outflow

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...440l..97c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 440, no. 2, p. L97-L99

Astronomy and Astrophysics

Astrophysics

30

Mass Flow, Protostars, Stellar Models, Stellar Winds, Water Masers, Kinematics, Star Formation, Stellar Luminosity

Scientific paper

We have detected strong, highly variable 22.3 GHz water maser emission from the deeply embedded L1448C low-mass protostar. The total maser intensity on 1993 July 5 was 210 Jy km/s (6x10-7 solar, which is two orders of magnitude more than that expected from a protostar with a bolometric luminosity of only 9 solar luminosity. The maser kinematics cannot be fitted with a disk model. Moreover, the L1448C maser spots are perfectly aligned with the collimated molecular outflow. Therefore, we have found the first direct evidence for a connection between a water maser outflow and a molecular outflow. The closest maser spots on either side of the source are separated by only 62 AU. Thus, the wind that originates from the protostar or disk must be collimated into a dense (is approximately equal to 106/cc) jet within 31 AU of the protostar.

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