2004A&A...421..473M


Query : 2004A&A...421..473M

2004A&A...421..473M - Astronomy and Astrophysics, volume 421, 473-477 (2004/7-2)

The complex X-ray spectrum of NGC 4507.

MATT G., BIANCHI S., D'AMMANDO F. and MARTOCCHIA A.

Abstract (from CDS):

XMM-Newton and Chandra/HETG spectra of the Compton-thin (NH∼4x1023cm–2) Seyfert 2 galaxy, NGC 4507, are analyzed and discussed. The main results are: a) the soft X-ray emission is rich in emission lines; an (at least) two-zone photoionization region is required to explain the large range of ionization states; b) the 6.4keV iron line is likely emitted from Compton-thick matter, implying the presence of two circumnuclear cold regions, one Compton-thick (the emitter), one Compton-thin (the cold absorber); c) evidence of an Fe XXV absorption line is found in the Chandra/HETG spectrum. The column density of the ionized absorber is estimated to be a few x1022cm–2.

Abstract Copyright:

Journal keyword(s): galaxies: individual: NGC 4507 - galaxies: Seyfert - X-rays: galaxies

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4602 2
2 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1647 0
3 NGC 4507 Sy2 12 35 36.6338976888 -39 54 33.710416272   12.95 13.54 11.70 12.4 ~ 495 0
4 NGC 5506 Sy2 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1091 0

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