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

Resultado de la investigación: Article

24 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 originalEnglish
Páginas (desde-hasta)1345-1358
Número de páginas14
PublicaciónAstronomy and Astrophysics
Volumen507
N.º3
DOI
EstadoPublished - 1 dic 2009

Huella dactilar

active galactic nuclei
galaxies
x rays
Southern Hemisphere
spectroscopy
telescopes
estimates
data analysis

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Parisi, P., Masetti, N., Jiménez-Bailón, E., Chavushyan, V., Malizia, A., Landi, R., ... 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
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. / Accurate classification of 17 AGNs detected with Swift/BAT. En: Astronomy and Astrophysics. 2009 ; Vol. 507, N.º 3. pp. 1345-1358.
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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.",
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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

Accurate classification of 17 AGNs detected with Swift/BAT. / 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.

En: Astronomy and Astrophysics, Vol. 507, N.º 3, 01.12.2009, p. 1345-1358.

Resultado de la investigación: Article

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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U2 - 10.1051/0004-6361/200912931

DO - 10.1051/0004-6361/200912931

M3 - Article

AN - SCOPUS:70849083139

VL - 507

SP - 1345

EP - 1358

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 3

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Parisi P, Masetti N, Jiménez-Bailón E, Chavushyan V, Malizia A, Landi R y otros. Accurate classification of 17 AGNs detected with Swift/BAT. Astronomy and Astrophysics. 2009 dic 1;507(3):1345-1358. https://doi.org/10.1051/0004-6361/200912931