Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...92..721e&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 92, no. 4, March 1992, p. 721-728. Research supported by DGI
Astronomy and Astrophysics
Astrophysics
21
Herbig-Haro Objects, Reflection Nebulae, Star Formation, Astronomical Photometry, Astronomical Spectroscopy, Charge Coupled Devices, Early Stars, H Alpha Line
Scientific paper
New deep I, H-alpha and SII forbidden-line CCD images of several fields were obtained in the star formation region NGC 7129. The data are presented in the form of grey-level pictures or isocontour plots. A large and complex nebulosity has been discovered in the field around the HH objects GGD 32 and HH 103. The nebulosity is formed by a diffuse component and several 'streamers' or filamentlike structures and many HH clumps, among which GGD 32 and HH 103 are just the two most outstanding ones. The large nebulosity coincides with the western blueshifted CO peak of the outflow associated with the southern far-infrared source in NGC 7129. In addition, the images reveal some new morphological details about the previously known objects GGD 33-35 and HH 105. A large variety of excitation conditions is suggested by the relative H-alpha SII forbidden-line ratios observed in the HH nebulosities.
Eiroa Carlos
Gomez de Castro Ana Ines
Miranda Luis F.
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