2005PASJ...57..135I -
Publ. Astron. Soc. Jap., 57, 135-145 (2005/February-0)
Chandra observation of the starburst galaxy NGC 2146.
INUI T., MATSUMOTO H., TSURU T.G., KOYAMA K., MATSUSHITA S., PECK A.B. and TARCHI A.
Abstract (from CDS):
begin{HTML} We present six monitoring observations of the starburst galaxy NGC 2146 using the Chandra X-ray Observatory. We detected 67 point sources in the field of view of the ACIS-S detector. Six of these sources were Ultra-Luminous X-ray Sources, the brightest of which had a luminosity of 5 x 10<sup>39 erg s<sup>-1</sup>. One of them, with a luminosity of ∼ 1 x 10<sup>39</sup> erg s<sup>-1</sup>, is coincident with the dynamical center location, which may be a low-luminosity active galactic nucleus. We have produced a table where the positions and main characteristics of the detected sources are reported. A comparison between the positions of the X-ray sources and those detected in NIR or radio indicates no definite counterpart. We have derived a log <i>N</i> - log <i>S</i> relation and a luminosity function. The luminosity function has a slope of 0.71 above a detection limit, which is similar to those found in other starburst galaxies. Diffuse emissions were detected in both soft (0.5-2.0keV) and hard (2.0-10.0keV) energy bands. The spectra of the diffuse component were fitted with two (hard and soft) components. The hard power-law component, with a luminosity of ∼ 4 x 10<sup>39 erg s<sup>-1</sup>, is likely to have originated by unresolved point sources.
Abstract Copyright:
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Journal keyword(s):
galaxies: active - galaxies: individual: NGC 2146 - galaxies: starburst - X-rays: galaxies
VizieR on-line data:
<Available at CDS (J/PASJ/57/135): table8.dat>
Nomenclature:
Table 8: [IMT2005] NN (Nos 1-67).
Simbad objects:
76
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