Details

Autor(en) / Beteiligte

• RETIRE, O. P
• WENDKER, H. J
• HIGGS, L. A
• LANDECKER, T. L

Titel

The Cygnus X region. XXII. A probable HAeBe star with a giant bipolar outflow in DR 16

Ist Teil von

• Astronomy and astrophysics (Berlin), 2004-02, Vol.415 (1), p.217-230

Ort / Verlag

Les Ulis: EDP Sciences

Erscheinungsjahr

2004

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• From medium-resolution radio images, DR 16 was suspected to be a large cometary nebula. To test this suggestion we obtained a higher resolution (15") VLA continuum map. We also analyzed data from the Canadian Galactic Plane Survey in continuum, H I line, and IR. These data were supplemented by published near-infrared (J, H, K) stellar photometric results and MSX 8.28 mu m data. We suggest that DR 16 is the diffuse H II region of an ongoing star formation site at a distance of about 3 kpc. The complicated radio picture arises from the superposition of diffuse H II with the remains of a giant bipolar outflow. The outflow was generated by a probable Herbig AeBe star, and the lobes are the remnants of its working surfaces. Additional ring-like features are discussed. DR 16 is part of a larger volume of space in the local spiral arm where star formation is an ongoing process.