Radio Free-Free Emission from Young Stellar Objects

Details Radio Free-Free Emission from Young Stellar Objects Radio Free-Free Emission from Young Stellar Objects

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.3305s&link_type=abstract

American Astronomical Society Meeting 203, #33.05; Bulletin of the American Astronomical Society, Vol. 35, p.1257

Astronomy and Astrophysics

Astronomy

Scientific paper

We use x-winds heated and ionized by the physical mechanisms discussed in earlier communications by our group to model the free-free emission at centimeter wavelengths of the jets from young stellar objects (YSOs). With stellar parameters, mass-loss rates, and x-ray luminosities characteristic of Class 0 or Class I YSOs, we recover realistic spectral indices and radio maps. In particular, the 3.6 cm flux in models with mass loss rates ˜ 10-6 M&sun;/yr or higher are comparable to existing observations of radio jets at 0".1 resolution. Lower mass-loss rates characteristic of Class II YSOs with revealed optical jets generally produce radio jets that are too weak to be detected at current sensitivity levels. We discuss the implications of these comparisons for theoretical models of the YSO outflow phenomenon.

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