Detection of SI VI 1.962 Microns and New Observations of Infrared H, Fe ii, and H 2 Line Emission in the Seyfert Galaxy NGC 1068
Abstract
We present measurements of several infrared lines in NGC 1068 including the [Si VI] transition at 1.962 micron which is detected for the first time in an extragalactic object. This line is among the brightest IR features (~ 5 times stronger than H_2_ 2.121 microns), is broad ({DELTA}ν ~ 1100 km s^-1^), and has a profile similar to He I 1.083 microns. The possibility of using the [Si VI] line to trace Seyfert activity and the origin of the H, [Fe II], and H_2_ lines are briefly discussed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1990
- DOI:
- 10.1086/185617
- Bibcode:
- 1990ApJ...348L...5O
- Keywords:
-
- Emission Spectra;
- Hydrogen;
- Infrared Astronomy;
- Line Spectra;
- Seyfert Galaxies;
- Galactic Nuclei;
- Iron;
- Metallicity;
- Astrophysics;
- GALAXIES: INDIVIDUAL NGC NUMBER: NGC 1068;
- GALAXIES: NUCLEI;
- GALAXIES: SEYFERT;
- INFRARED: SPECTRA