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Astron. Astrophys. 333, 762 (1998)

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BeppoSAX observation of 3C273: broadband spectrum
and detection of a low-energy absorption feature

P. Grandi 1, M. Guainazzi 2, 1, T. Mineo 3, A.N. Parmar 4, F. Fiore 2, 5, A. Matteuzzi 2, F. Nicastro 1, G.C. Perola 6, L. Piro 1, M. Cappi 7, 8, G. Cusumano 3, F. FronteraS. Giarrusso 9, 3, E. Palazzi 5 and S. Piraino 3

1 Istituto di Astrofisica Spaziale, C.N.R., Via Enrico Fermi 21, I-00044 Frascati (RM), Italy
2 BeppoSAX  Science Data Center , c/o Nuova Telespazio, Via Corcolle 19, I-00131 Roma, Italy
3 Istituto di Fisica Cosmica ed Applicazioni dell'Informatica C.N.R., Via Ugo La Malfa 153, I-90146 Palermo, Italy
4 Astrophysics Division, Space Science Department of ESA, ESTEC, Postbus 299, 2200 AG Noordwijk, The Netherlands
5 Osservatorio Astronomico di Roma, Via dell'Osservatorio, I-00044 Monteporzio Catone, Italy
6 Dipartimento di Fisica "E.Amaldi", Università degli Studi "Roma 3", Via della Vasca Navale 84, I-00146 Roma, Italy
7 Istituto di Tecnologie e Studio delle radiazioni Extraterrestri C.N.R., Via P.Gobetti 101, I-40129 Bologna, Italy
8 The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 350-01, Japan
9 Dipartimento di Fisica, Università di Ferrara, Via Paradiso 11, I-44100 Ferrara, Italy

Astron. Astrophys, 325, L-17-L20 (1997)

In the original figure the left hand panel was printed twice. The correct figure is given below.

[FIGURE] Fig. 2. An absorption feature and a soft excess are clearly evident in the LECS residuals when a power law ([FORMULA], NH =N [FORMULA]) is fitted the the data (left panel). Data are well parameterized by a broken power-law plus a notch (right panel)

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© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998