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Barnard 18,LBN 812 (DG 37) ,Herbig Haro 319,466,467,468 (Taurus) END


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Latest image: More resolution at :

http://afesan.es/Deepspace/Barnard%2018,LBN%20812%20(DG%2037)%20,Herbig-Haro%20319,466,467,468%20(Taurus)%20END_jpg_orig.html

The B18 cloud is one of the most active sites of protostellar

outflow production in Taurus.The central part of the B18 cloud located about 40 (1.6 pc)

west of IRAS 04325+2402 contains a concentration of a dozen

young stars including ZZ, HK, FY, and FZ Tau, and several

previously known HH objects such as HH 393 near ZZ Tauri

(Gomez et al. 1997), HH 319 (Haro et al. 1953).The new images clearly show that HH 319

located about 1 northeast of FY and FZ Tau, is a bow shock

with an orientation indicating motion toward the southeast. Thus

these two nearby stars are not associated with this outflow,

whose source must be an embedded infrared object located in the

dark cloud to the northwest. HH 319 S is a compact 10 diameter

partial ring of emission located about 30 due south of HH 319

near FY and FZ Tau. The northern part of the ring is brightest.

References:

DEEP IMAGING SURVEYS OF STAR-FORMING CLOUDS. V. NEW HERBIG–HARO

SHOCKS AND GIANT OUTFLOWS IN TAURUS

John Bally, Josh Walawender, and Bo Reipurth

The Astronomical Journal, 144:143 (7pp), 2012 November doi:10.1088/0004-6256/144/5/143

C 2012. The American Astronomical Society.


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