On the relation of optical obscuration and X-ray absorption in Seyfert galaxies

L. Burtscher; R. I. Davies; J. Graciá-Carpio; M. J. Koss; M.-Y. Lin; D. Lutz; P. Nandra; H. Netzer; G. Orban de Xivry; C. Ricci; D. J. Rosario; S. Veilleux; A. Contursi; R. Genzel; A. Schnorr-Müller; A. Sternberg; E. Sturm; L. J. Tacconi

doi:10.1051/0004-6361/201527575

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Volume 586 (February 2016)

A&A, 586 (2016) A28

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Fig. 1

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Derived extinction towards the hot dust A_V vs. observed near-IR colour temperature. The intrinsic temperature T₁ is set by the observed colour temperature of presumably unobscured sources (Seyfert 1.0–1.5) and the spread in these observed temperatures translates into an uncertainty of A_V of about 3 mag as indicated for several observed colour temperatures. For details of the fit of the near-IR colour temperature we refer to B15, specifically Fig. 6 there.

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