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Title:
Herbig-Haro objects in the dust globule ESO 210-6A
Authors:
Graham, J. A.; Elias, J. H.
Affiliation:
AA(Observatorio Interamericano de Cerro Tololo, La Serena, Chile), AB(Observatorio Interamericano de Cerro Tololo, La Serena, Chile)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 272, Sept. 15, 1983, p. 615-617, 619-626. (ApJ Homepage)
Publication Date:
09/1983
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Herbig-Haro Objects, Infrared Astronomy, Nebulae, Stellar Evolution, Astronomical Photography, Near Infrared Radiation, Radial Velocity, Stellar Winds
DOI:
10.1086/161324
Bibliographic Code:
1983ApJ...272..615G

Abstract

New narrow-band H-alpha and forbidden S II images of the dark globule ESO 210-6A and its associated Herbig-Haro objects HH 46 and HH 47 show additional emission knots. The HH objects are tightly collimated about an axis at P.A. 57 deg. New radial velocity measurements are presented. These confirm the result of Dopita, Schwartz, and Evans (1982) that the knots to the SW, labeled HH 47C, have a high positive velocity as contrasted with the high negative velocities observed in and to the NE of HH 46. The bubble-like nebula, HH 47D, has a lower but still negative radial velocity. The HH objects appear to be a manifestation of bipolar outflow from an isolated star embedded in th globule. In this case, the material outflow is viewed with particularly favorable geometry. Red and near-infrared continuum images, combined with low-resolution infrared maps at 1.2, 1.6, and 2.2 microns, lead to a probable identification of the exciting star located near the southern end of HH 46.

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