Irradiated Jets and Outflows in the Pelican Nebula

Details Irradiated Jets and Outflows in the Pelican Nebula Irradiated Jets and Outflows in the Pelican Nebula

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aj....126..893b&link_type=abstract

The Astronomical Journal, Volume 126, Issue 2, pp. 893-901.

Astronomy and Astrophysics

Astronomy

25

Ism: H Ii Regions, Ism: Globules, Ism: Herbig-Haro Objects, Ism: Jets And Outflows, Stars: Formation

Scientific paper

We report the discovery of new Herbig-Haro objects in the Pelican Nebula (IC 4050). HH 555 is a bipolar jet emerging from the tip of a major elephant trunk protruding into the Pelican Nebula from the adjacent molecular cloud. Both beams of HH 555 bend toward the west, indicating deflection by a side wind. A chain of three nearly equally spaced bow shocks, HH 563, HH 564, and HH 565, trace a bent flow bursting out of the southern rim of the Pelican molecular cloud, possibly driven by the moderate-luminosity Class I protostar IRAS 20489+4406. Object HH 570 is a highly collimated jet emerging from a compact cloud located about 15' southeast of the Pelican molecular cloud. A parallel outflow, possibly driven by IRAS 20496+4354, powers the bright bow shock HH 569. These observations demonstrate that vigorous star formation is still occurring within the clouds that surround the evolved North America/Pelican Nebula complex.

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