XMM-Newton observations of the Seyfert 1 galaxy ESO 141-G55

被引：13

作者：

Gondoin, P ^{[1
]}

Orr, A ^{[1
]}

Lumb, D ^{[1
]}

机构：

[1] European Space Agcy, Res & Sci Support Dept, NL-2200 AG Noordwijk, Netherlands

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 398卷 / 03期

关键词：

galaxies : individual : ESO 141-G55; galaxies : nuclei; galaxies : Seyfert;

D O I：

10.1051/0004-6361:20021694

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on an observation of the Seyfert 1 galaxy ESO 141-G55 performed in October 2001 with the EPIC MOS cameras and Reflection Grating Spectrometers (RGS) on board the XMM-Newton observatory. We find the hard (3-10 keV) continuum slope, including reflection, to be somewhat flatter (Gamma = 1.72 +/- 0.06) than that of a typical broad-line Seyfert I galaxy. The spectrum shows a weak emission line at 6.45 +/- 0.04 keV with a measured equivalent width of approximate to40 eV. A broad spectral feature is observed around 7 keV that can be fitted by an absorption edge at 7.6 +/- 0.1 keV. The extrapolation of the primary power law continuum to energies lower than 2 keV indicates the presence of a soft excess component contributing to 45 +/- 3% of the overall flux in the 0.3-2.0 keV energy range. This soft-excess cannot be explained solely by enhanced reflection from a highly ionized disk.

引用

页码：967 / 973

页数：7

共 54 条

[41] GRAVITATIONALLY REDSHIFTED EMISSION IMPLYING AN ACCRETION DISK AND MASSIVE BLACK-HOLE IN THE ACTIVE GALAXY MCG-6-30-15 [J].

TANAKA, Y ;

NANDRA, K ;

FABIAN, AC ;

INOUE, H ;

OTANI, C ;

DOTANI, T ;

HAYASHIDA, K ;

IWASAWA, K ;

KII, T ;

KUNIEDA, H ;

MAKINO, F ;

MATSUOKA, M .

NATURE, 1995, 375 (6533) :659-661

[42] The European Photon Imaging Camera on XMM-Newton:: The MOS cameras [J].

Turner, MJL ;

Abbey, A ;

Arnaud, M ;

Balasini, M ;

Barbera, M ;

Belsole, E ;

Bennie, PJ ;

Bernard, JP ;

Bignami, GF ;

Boer, M ;

Briel, U ;

Butler, I ;

Cara, C ;

Chabaud, C ;

Cole, R ;

Collura, A ;

Conte, M ;

Cros, A ;

Denby, M ;

Dhez, P ;

Di Coco, G ;

Dowson, J ;

Ferrando, P ;

Ghizzardi, S ;

Gianotti, F ;

Goodall, CV ;

Gretton, L ;

Griffiths, RG ;

Hainaut, O ;

Hochedez, JF ;

Holland, AD ;

Jourdain, E ;

Kendziorra, E ;

Lagostina, A ;

Laine, R ;

La Palombara, N ;

Lortlolary, M ;

Lumb, D ;

Marty, P ;

Molendi, S ;

Pigot, C ;

Poindron, E ;

Pounds, KA ;

Reeves, JN ;

Reppin, C ;

Rothenflug, R ;

Salvetat, P ;

Sauvageot, JL ;

Schmitt, D ;

Sembay, S .

ASTRONOMY & ASTROPHYSICS, 2001, 365 (01) :L27-L35

[43] ROSAT POSITION-SENSITIVE PROPORTIONAL COUNTER SPECTRA OF 6 SEYFERT-1 GALAXIES [J].

TURNER, TJ ;

GEORGE, IM ;

MUSHOTZKY, RF .

ASTROPHYSICAL JOURNAL, 1993, 412 (01) :72-81

[44] THE EXOSAT SPECTRAL SURVEY OF AGN [J].

TURNER, TJ ;

POUNDS, KA .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1989, 240 (04) :833-880

[45] EINSTEIN-OBSERVATORY SSS AND MPC OBSERVATIONS OF THE COMPLEX-X-RAY SPECTRA OF SEYFERT-GALAXIES [J].

TURNER, TJ ;

WEAVER, KA ;

MUSHOTZKY, RF ;

HOLT, SS ;

MADEJSKI, GM .

ASTROPHYSICAL JOURNAL, 1991, 381 (01) :85-100

[46] X-ray signatures of an ionized reprocessor in the Seyfert galaxy Ton S180 [J].

Turner, TJ ;

George, IM ;

Nandra, K .

ASTROPHYSICAL JOURNAL, 1998, 508 (02) :648-656

[47] Evidence for an ionized disc in the narrow-line Seyfert 1 galaxy Ark 564 [J].

Vaughan, S ;

Pounds, KA ;

Reeves, J ;

Warwick, R ;

Edelson, R .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 308 (04) :L34-L38

[48]

WALTER R, 1993, ASTRON ASTROPHYS, V274, P105

[49] OPTICAL IDENTIFICATIONS OF EXTRA-GALACTIC X-RAY SOURCES [J].

WARD, MJ ;

WILSON, AS ;

PENSTON, MV ;

ELVIS, M ;

MACCACARO, T ;

TRITTON, KP .

ASTROPHYSICAL JOURNAL, 1978, 223 (03) :788-&

[50] XMM-EPIC observation of MCG-6-30-15:: direct evidence for the extraction of energy from a spinning black hole? [J].

Wilms, J ;

Reynolds, CS ;

Begelman, MC ;

Reeves, J ;

Molendi, S ;

Staubert, R ;

Kendziorra, E .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 328 (03) :L27-L31

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