SIMBAD references

2006A&A...453..839P - Astronomy and Astrophysics, volume 453, 839-846 (2006/7-3)

4U 1344-60: a bright intermediate Seyfert galaxy at z = 0.012 with a relativistic Fe Kα emission line.

PICONCELLI E., SANCHEZ-PORTAL M., GUAINAZZI M., MARTOCCHIA A., MOTCH C., SCHROEDER A.C., BIANCHI S., JIMENEZ-BAILON E. and MATT G.

Abstract (from CDS):

We present analysis of the optical and X-ray spectra of the low Galactic latitude bright (F2–10=3.6x10–11erg/cm2/s) source u. On the basis of the optical data we propose to classify u as an intermediate type Seyfert galaxy and we measure a value of z=0.012±0.001 for its redshift. From the XMM-Newton observation we find that the overall X-ray spectral shape of u is complex and can be described by a power-law continuum (Γ≃1.55) obscured by two neutral absorption components (NHf∼1022cm–2 and NHp∼4x1022cm–2), the latter covering only the ∼50% of the primary X-ray source. The X-ray data therefore lend support to our classification of u. It exhibits a broad and skewed Fe Kα line at ∼6.4keV, which suggests the existence of an accretion disk that is able to reprocess the primary continuum down to a few gravitational radii. Such a line represents one of the clearest examples of a relativistic line observed by XMM-Newton so far. Our analysis has also revealed the marginal presence of two narrow line-like emission features at ∼4.9 and ∼5.2keV.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual: 4U 1344-60 - X-ray: galaxies

Simbad objects: 8

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