The extended infrared radiation from the L 1551 bipolar flow, L(0) greater than 19 solar luminosities

Details The extended infrared radiation from the L 1551 bipolar flow, L(0) greater than 19 solar luminosities The extended infrared radiation from the L 1551 bipolar flow, L(0) greater than 19 solar luminosities

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168l...1c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. L1-L4.

Astronomy and Astrophysics

Astrophysics

19

Cosmic Dust, Infrared Radiation, Magnetohydrodynamic Flow, Pre-Main Sequence Stars, Radiation Distribution, Bipolarity, Shock Waves, Stellar Evolution, Stellar Luminosity, Stellar Models

Scientific paper

The extended infrared emission from dust surrounding the L 1551 flow is estimated to have an infrared bolometric luminosity of 19 (-4 +10) solar luminosities. Ultraviolet radiation from the shock associated with the flow appears capable of heating this dust, requiring shock temperatures as high as 90,000 K, and velocities of about 50 km/s near the end of the flow. The extended infrared emission raises the total energy requirement over a 10 to the 4th year lifetime to 10 to the 46th - 10 to the 47th ergs, two orders of magnitude larger than previously published estimates based on CO. If gravitational in origin, this energy likely originates from a region smaller than 10 to the 13th cm (1 au). Infrared radiation offers a new probe for interstellar shocks by sampling dust heated by the surrounding ultraviolet halo.

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