A recent change in the brightness and form of the HH46 reflection nebula

Details A recent change in the brightness and form of the HH46 reflection nebula A recent change in the brightness and form of the HH46 reflection nebula

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99.1174g&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, Nov. 1987, p. 1174-1177.

Astronomy and Astrophysics

Astronomy

13

Brightness, Herbig-Haro Objects, Reflection Nebulae, Star Formation, Stellar Envelopes, Emission Spectra, Infrared Sources (Astronomy), Molecular Clouds

Scientific paper

A several-fold increase in the surface brightness of the scattered light component of the southern Herbig-Haro object HH46 took place between January 1984 and May 1986. A more subtle change in the shape of the nebula also occurred in that a small region, formerly only prominent in the infrared, is now the brightest part of the reflection nebula in visible red light. The change is due either to a flaring of the adjacent but still invisible young stellar object or to a partial clearing of the dust which still surrounds it. In May 1987, the nebula still appeared bright suggesting that the change may be a long-term one.

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