GSS 30 - an infrared reflection nebula in the Ophiuchus dark cloud

Abstract

view Abstract Citations (81) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS GSS 30: an Infrared Reflection Nebula in the Ophiuchus Dark Cloud Castelaz, M. W. ; Hackwell, J. A. ; Grasdalen, G. L. ; Gehrz, R. D. ; Gullixson, C. Abstract Surface brightness maps at I', H, K, L, and N, and polarimetric images at K and H of the object GSS 30 in the Ophiuchus dark cloud were made with the 2.3 m Wyoming infrared telescope. The images show that GSS 30 is a bi-lobed asymmetric reflection nebula detectable at H, K, and L. At H the nebulosity extends 22arcsec along the major axis, and the illuminating star has a magnitude of 11.17; at K it extends 45arcsec along the major axis, and the illuminating star has a magnitude of 8.88. A model is presented in which an accretion disk is seen nearly edge-on obscuring a star and polar reflection lobes. Density profiles and grain characteristics of the reflection nebula are briefly discussed. Publication: The Astrophysical Journal Pub Date: March 1985 DOI: 10.1086/162980 Bibcode: 1985ApJ...290..261C Keywords: Astronomical Spectroscopy; Brightness Distribution; Infrared Spectra; Polarimetry; Reflection Nebulae; Stellar Magnitude; Astronomical Maps; Astronomical Models; Hertzsprung-Russell Diagram; Hubble Diagram; Molecular Clouds; Optical Thickness; Surface Properties; Astrophysics full text sources ADS | data products SIMBAD (3) Related Materials (1) Erratum: 1986ApJ...301..502C