Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aj....124.2152b&link_type=abstract
The Astronomical Journal, Volume 124, Issue 4, pp. 2152-2163.
Astronomy and Astrophysics
Astronomy
14
Ism: Individual: Alphanumeric: S140, Ism: Jets And Outflows, Shock Waves, Stars: Formation
Scientific paper
We present a wide-field CCD survey of Herbig-Haro objects in the S140 H II region and the adjacent molecular cloud. Two outflows originating in the S140 molecular cloud core are breaking into the surrounding H II region. The P.A.=65deg/245deg molecular outflow that originates from IRS 3 in the S140 infrared cluster has driven an optically visible bow shock into the S140 H II region. This externally irradiated shock, HH 617, appears to be the counterflow associated with an H2-bright bow shock located 90" northeast of S140 IRS 3. A second, even larger bow shock, HH 616, located about 1' south of this shock indicates another major outflow whose as yet unidentified driving source must lie south of the S140 infrared cluster. These observations indicate that additional molecular outflows and embedded young stars remain to be identified in the S140 molecular cloud core. Furthermore, we report the detection of a dozen new Herbig-Haro objects in other cloud cores near S140.
Armond Tina
Bally John
Reipurth Bo
Walawender Josh
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