Journal
ASTROPHYSICAL JOURNAL
Volume 683, Issue 1, Pages 267-271Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/589819
Keywords
accretion; accretion disks; binaries : general; ISM : individual (HH 24 MMS); ISM : structure; stars : formation
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The HH 24MMSprotostellar system was observed in the 6.9mmcontinuum with a high angular resolution (0.500). HH24MMSwas resolved into two sources. The separation between sources 1 and 2 is 0.900 or 360 AU. The spectral energy distribution suggests that the 6.9 mm flux is almost entirely from dust. The 6.9 mm image and the spectrum suggest that HH 24 MMS may be a protostellar binary system. Total mass including the accretion disks and the inner protostellar envelope is similar to 1.4 M-circle dot. Disk masses of sources 1 and 2 are 0.6 and 0.3 M-circle dot, respectively. Both sources are highly elongated. The difference in the position angle of the two disks is similar to 45 degrees, which means that HH 24 MMS is a highly misaligned protobinary system. The misalignment suggests that turbulent fragmentation may be the formation mechanismrelevant to the binary systems with a separation of a few hundreds of AU, such as the HH 24MMS system.
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