Accurate classification of 17 AGNs detected with Swift/BAT

P. Parisi; N. Masetti; E. Jiménez-Bailón; V. Chavushyan; A. Malizia; R. Landi; M. Molina; M. Fiocchi; E. Palazzi; L. Bassani; A. Bazzano; A. J. Bird; A. J. Dean; G. Galaz; E. Mason; D. Minniti; L. Morelli; J. B. Stephen; P. Ubertini

doi:10.1051/0004-6361/200912931

Accurate classification of 17 AGNs detected with Swift/BAT

P. Parisi, N. Masetti, E. Jiménez-Bailón, V. Chavushyan, A. Malizia, R. Landi, M. Molina, M. Fiocchi, E. Palazzi, L. Bassani, A. Bazzano, A. J. Bird, A. J. Dean, G. Galaz, E. Mason, D. Minniti, L. Morelli, J. B. Stephen, P. Ubertini

Facultad Ciencias Exactas

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28 Citas (Scopus)

Resumen

Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optical spectroscopy for 17 counterparts of suspected or poorly studied hard X-ray emitting active galactic nuclei (AGNs) detected with Swift/BAT in order to determine or better classify their nature. We find that 7 sources of our sample are type 1 AGNs, 9 are type 2 AGNs, and 1 object is an X-ray bright optically normal galaxy; the redshifts of these objects lie in a range between 0.012 and 0.286. For all these sources, X-ray data analysis was also performed to estimate their absorption column and to search for possible Compton thick candidates. Among our type 2 objects, we did not find any clear Compton thick AGN, but at least 6 out of 9 of them are highly absorbed (NH < 10²³ cm^-2), while one does not require intrinsic absorption; i.e., it appears to be a naked Seyfert 2 galaxy.

Idioma original	Inglés
Páginas (desde-hasta)	1345-1358
Número de páginas	14
Publicación	Astronomy and Astrophysics
Volumen	507
N.º	3
DOI	https://doi.org/10.1051/0004-6361/200912931
Estado	Publicada - 1 dic. 2009

Áreas temáticas de ASJC Scopus

Astronomía y astrofísica
Ciencias planetarias y espacial

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Parisi, P., Masetti, N., Jiménez-Bailón, E., Chavushyan, V., Malizia, A., Landi, R., Molina, M., Fiocchi, M., Palazzi, E., Bassani, L., Bazzano, A., Bird, A. J., Dean, A. J., Galaz, G., Mason, E., Minniti, D., Morelli, L., Stephen, J. B., & Ubertini, P. (2009). Accurate classification of 17 AGNs detected with Swift/BAT. Astronomy and Astrophysics, 507(3), 1345-1358. https://doi.org/10.1051/0004-6361/200912931

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title = "Accurate classification of 17 AGNs detected with Swift/BAT",

abstract = "Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optical spectroscopy for 17 counterparts of suspected or poorly studied hard X-ray emitting active galactic nuclei (AGNs) detected with Swift/BAT in order to determine or better classify their nature. We find that 7 sources of our sample are type 1 AGNs, 9 are type 2 AGNs, and 1 object is an X-ray bright optically normal galaxy; the redshifts of these objects lie in a range between 0.012 and 0.286. For all these sources, X-ray data analysis was also performed to estimate their absorption column and to search for possible Compton thick candidates. Among our type 2 objects, we did not find any clear Compton thick AGN, but at least 6 out of 9 of them are highly absorbed (NH < 1023 cm-2), while one does not require intrinsic absorption; i.e., it appears to be a naked Seyfert 2 galaxy.",

keywords = "Galaxies: Seyfert, Techniques: spectroscopic",

author = "P. Parisi and N. Masetti and E. Jim{\'e}nez-Bail{\'o}n and V. Chavushyan and A. Malizia and R. Landi and M. Molina and M. Fiocchi and E. Palazzi and L. Bassani and A. Bazzano and Bird, {A. J.} and Dean, {A. J.} and G. Galaz and E. Mason and D. Minniti and L. Morelli and Stephen, {J. B.} and P. Ubertini",

year = "2009",

month = dec,

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doi = "10.1051/0004-6361/200912931",

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Parisi, P, Masetti, N, Jiménez-Bailón, E, Chavushyan, V, Malizia, A, Landi, R, Molina, M, Fiocchi, M, Palazzi, E, Bassani, L, Bazzano, A, Bird, AJ, Dean, AJ, Galaz, G, Mason, E, Minniti, D, Morelli, L, Stephen, JB & Ubertini, P 2009, 'Accurate classification of 17 AGNs detected with Swift/BAT', Astronomy and Astrophysics, vol. 507, n.º 3, pp. 1345-1358. https://doi.org/10.1051/0004-6361/200912931

TY - JOUR

T1 - Accurate classification of 17 AGNs detected with Swift/BAT

AU - Parisi, P.

AU - Masetti, N.

AU - Jiménez-Bailón, E.

AU - Chavushyan, V.

AU - Malizia, A.

AU - Landi, R.

AU - Molina, M.

AU - Fiocchi, M.

AU - Palazzi, E.

AU - Bassani, L.

AU - Bazzano, A.

AU - Bird, A. J.

AU - Dean, A. J.

AU - Galaz, G.

AU - Mason, E.

AU - Minniti, D.

AU - Morelli, L.

AU - Stephen, J. B.

AU - Ubertini, P.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optical spectroscopy for 17 counterparts of suspected or poorly studied hard X-ray emitting active galactic nuclei (AGNs) detected with Swift/BAT in order to determine or better classify their nature. We find that 7 sources of our sample are type 1 AGNs, 9 are type 2 AGNs, and 1 object is an X-ray bright optically normal galaxy; the redshifts of these objects lie in a range between 0.012 and 0.286. For all these sources, X-ray data analysis was also performed to estimate their absorption column and to search for possible Compton thick candidates. Among our type 2 objects, we did not find any clear Compton thick AGN, but at least 6 out of 9 of them are highly absorbed (NH < 1023 cm-2), while one does not require intrinsic absorption; i.e., it appears to be a naked Seyfert 2 galaxy.

AB - Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optical spectroscopy for 17 counterparts of suspected or poorly studied hard X-ray emitting active galactic nuclei (AGNs) detected with Swift/BAT in order to determine or better classify their nature. We find that 7 sources of our sample are type 1 AGNs, 9 are type 2 AGNs, and 1 object is an X-ray bright optically normal galaxy; the redshifts of these objects lie in a range between 0.012 and 0.286. For all these sources, X-ray data analysis was also performed to estimate their absorption column and to search for possible Compton thick candidates. Among our type 2 objects, we did not find any clear Compton thick AGN, but at least 6 out of 9 of them are highly absorbed (NH < 1023 cm-2), while one does not require intrinsic absorption; i.e., it appears to be a naked Seyfert 2 galaxy.

KW - Galaxies: Seyfert

KW - Techniques: spectroscopic

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SN - 0004-6361

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JO - Astronomy and Astrophysics

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ER -

Accurate classification of 17 AGNs detected with Swift/BAT

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