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An enshrouded active galactic nucleus in the merging starburst system ARP 299 revealed by BeppoSAX
被引:63
|作者:
Della Ceca, R
Ballo, L
Tavecchio, F
Maraschi, L
Petrucci, PO
Bassani, L
Cappi, M
Dadina, M
Franceschini, A
Malaguti, G
Palumbo, GGC
Persic, M
机构:
[1] Osserv Astron Brera, I-20121 Milan, Italy
[2] Observ Grenoble, Astrophys Lab, F-38041 Grenoble, France
[3] CNR, Ist Tesre, I-40129 Bologna, Italy
[4] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy
[5] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy
[6] Osserv Astron Trieste, I-34131 Trieste, Italy
关键词:
galaxies : active;
galaxies;
individual;
(IC;
694;
NGC;
3690);
galaxies : nuclei;
galaxies : starburst;
X-rays : galaxies;
D O I:
10.1086/345925
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
Using a long (similar or equal to150 ks) broadband (0.1- 40 keV) BeppoSAX observation of the merging starburst system Arp 299 (=IC 694 + NGC 3690), we found the first unambiguous evidence of the presence of a deeply buried (N-H similar or equal to 2.5 x 10(24) cm(-2)) active galactic nucleus (AGN) having an intrinsic luminosity of L0.5-100 (keV) similar or equal to 1.9 x 10(43) ergs s(-1). The X- ray spectral properties of this AGN are discussed in detail, as well as the thermal component detected at soft X- ray energies, which, most likely, is associated with the starburst.
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页码:L9 / L13
页数:5
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