We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Suzaku observation of an iron K-shell line in the spiral galaxy NGC 6946.
- Authors
Yamauchi, Shigeo; Inaba, Azusa; Anraku, Yumiko
- Abstract
An emission line at ∼6.7 keV is attributable to an He-like iron K-shell transition, which indicates existence of a thin thermal plasma with a temperature of several keV. Using Suzaku archival data, we searched for the iron K-line from the spiral galaxy NGC 6946, and found it at 6.68 ± 0.07 keV at the 3.1σ level in the central |$r\le {2.^{\prime }5}$| region. The iron line luminosity from the central region was estimated to be (2.3 ± 1.2) × 1037 erg s−1 at a distance of 5.5 Mpc. The origin of the iron emission line is discussed.
- Subjects
NEW General Catalogue of Nebulae &; Clusters of Stars; IRON; THERMAL plasmas; PLASMA temperature; SEYFERT galaxies; SPIRAL galaxies
- Publication
Publications of the Astronomical Society of Japan, 2024, Vol 76, Issue 3, p523
- ISSN
0004-6264
- Publication type
Article
- DOI
10.1093/pasj/psae028