The structure of the broad-line region in active galactic nuclei. I. Reconstructed velocity-delay maps

C. J. Grier, B. M. Peterson, Keith Horne, M. C. Bentz, R. W. Pogge, K. D. Denney, G. De Rosa, Paul Martini, C. S. Kochanek, Y. Zu, B. Shappee, R. Siverd, T. G. Beatty, S. G. Sergeev, S. Kaspi, C. Araya Salvo, J. C. Bird, D. J. Bord, G. A. Borman, X. CheC. Chen, S. A. Cohen, M. Dietrich, V. T. Doroshenko, Yu S. Efimov, N. Free, I. Ginsburg, C. B. Henderson, A. L. King, K. Mogren, M. Molina, A. M. Mosquera, S. V. Nazarov, D. N. Okhmat, O. Pejcha, S. Rafter, J. C. Shields, J. Skowron, D. M. Szczygiel, M. Valluri, J. L. Van Saders

Research output: Contribution to journalArticle

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Abstract

We present velocity-resolved reverberation results for five active galactic nuclei. We recovered velocity-delay maps using the maximum entropy method for four objects: Mrk 335, Mrk 1501, 3C 120, and PG 2130+099. For the fifth, Mrk 6, we were only able to measure mean time delays in different velocity bins of the Hβ emission line. The four velocity-delay maps show unique dynamical signatures for each object. For 3C 120, the Balmer lines show kinematic signatures consistent with both an inclined disk and infalling gas, but the He II λ4686 emission line is suggestive only of inflow. The Balmer lines in Mrk 335, Mrk 1501, and PG 2130+099 show signs of infalling gas, but the He II emission in Mrk 335 is consistent with an inclined disk. We also see tentative evidence of combined virial motion and infalling gas from the velocity-binned analysis of Mrk 6. The maps for 3C 120 and Mrk 335 are two of the most clearly defined velocity-delay maps to date. These maps constitute a large increase in the number of objects for which we have resolved velocity-delay maps and provide evidence supporting the reliability of reverberation-based black hole mass measurements.

Original languageEnglish (US)
Article number47
JournalAstrophysical Journal
Volume764
Issue number1
DOIs
StatePublished - Feb 10 2013

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active galactic nuclei
reverberation
gases
signatures
gas
maximum entropy method
entropy
inflow
time lag
kinematics

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Grier, C. J., Peterson, B. M., Horne, K., Bentz, M. C., Pogge, R. W., Denney, K. D., ... Van Saders, J. L. (2013). The structure of the broad-line region in active galactic nuclei. I. Reconstructed velocity-delay maps. Astrophysical Journal, 764(1), [47]. https://doi.org/10.1088/0004-637X/764/1/47
Grier, C. J. ; Peterson, B. M. ; Horne, Keith ; Bentz, M. C. ; Pogge, R. W. ; Denney, K. D. ; De Rosa, G. ; Martini, Paul ; Kochanek, C. S. ; Zu, Y. ; Shappee, B. ; Siverd, R. ; Beatty, T. G. ; Sergeev, S. G. ; Kaspi, S. ; Salvo, C. Araya ; Bird, J. C. ; Bord, D. J. ; Borman, G. A. ; Che, X. ; Chen, C. ; Cohen, S. A. ; Dietrich, M. ; Doroshenko, V. T. ; Efimov, Yu S. ; Free, N. ; Ginsburg, I. ; Henderson, C. B. ; King, A. L. ; Mogren, K. ; Molina, M. ; Mosquera, A. M. ; Nazarov, S. V. ; Okhmat, D. N. ; Pejcha, O. ; Rafter, S. ; Shields, J. C. ; Skowron, J. ; Szczygiel, D. M. ; Valluri, M. ; Van Saders, J. L. / The structure of the broad-line region in active galactic nuclei. I. Reconstructed velocity-delay maps. In: Astrophysical Journal. 2013 ; Vol. 764, No. 1.
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abstract = "We present velocity-resolved reverberation results for five active galactic nuclei. We recovered velocity-delay maps using the maximum entropy method for four objects: Mrk 335, Mrk 1501, 3C 120, and PG 2130+099. For the fifth, Mrk 6, we were only able to measure mean time delays in different velocity bins of the Hβ emission line. The four velocity-delay maps show unique dynamical signatures for each object. For 3C 120, the Balmer lines show kinematic signatures consistent with both an inclined disk and infalling gas, but the He II λ4686 emission line is suggestive only of inflow. The Balmer lines in Mrk 335, Mrk 1501, and PG 2130+099 show signs of infalling gas, but the He II emission in Mrk 335 is consistent with an inclined disk. We also see tentative evidence of combined virial motion and infalling gas from the velocity-binned analysis of Mrk 6. The maps for 3C 120 and Mrk 335 are two of the most clearly defined velocity-delay maps to date. These maps constitute a large increase in the number of objects for which we have resolved velocity-delay maps and provide evidence supporting the reliability of reverberation-based black hole mass measurements.",
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Grier, CJ, Peterson, BM, Horne, K, Bentz, MC, Pogge, RW, Denney, KD, De Rosa, G, Martini, P, Kochanek, CS, Zu, Y, Shappee, B, Siverd, R, Beatty, TG, Sergeev, SG, Kaspi, S, Salvo, CA, Bird, JC, Bord, DJ, Borman, GA, Che, X, Chen, C, Cohen, SA, Dietrich, M, Doroshenko, VT, Efimov, YS, Free, N, Ginsburg, I, Henderson, CB, King, AL, Mogren, K, Molina, M, Mosquera, AM, Nazarov, SV, Okhmat, DN, Pejcha, O, Rafter, S, Shields, JC, Skowron, J, Szczygiel, DM, Valluri, M & Van Saders, JL 2013, 'The structure of the broad-line region in active galactic nuclei. I. Reconstructed velocity-delay maps', Astrophysical Journal, vol. 764, no. 1, 47. https://doi.org/10.1088/0004-637X/764/1/47

The structure of the broad-line region in active galactic nuclei. I. Reconstructed velocity-delay maps. / Grier, C. J.; Peterson, B. M.; Horne, Keith; Bentz, M. C.; Pogge, R. W.; Denney, K. D.; De Rosa, G.; Martini, Paul; Kochanek, C. S.; Zu, Y.; Shappee, B.; Siverd, R.; Beatty, T. G.; Sergeev, S. G.; Kaspi, S.; Salvo, C. Araya; Bird, J. C.; Bord, D. J.; Borman, G. A.; Che, X.; Chen, C.; Cohen, S. A.; Dietrich, M.; Doroshenko, V. T.; Efimov, Yu S.; Free, N.; Ginsburg, I.; Henderson, C. B.; King, A. L.; Mogren, K.; Molina, M.; Mosquera, A. M.; Nazarov, S. V.; Okhmat, D. N.; Pejcha, O.; Rafter, S.; Shields, J. C.; Skowron, J.; Szczygiel, D. M.; Valluri, M.; Van Saders, J. L.

In: Astrophysical Journal, Vol. 764, No. 1, 47, 10.02.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The structure of the broad-line region in active galactic nuclei. I. Reconstructed velocity-delay maps

AU - Grier, C. J.

AU - Peterson, B. M.

AU - Horne, Keith

AU - Bentz, M. C.

AU - Pogge, R. W.

AU - Denney, K. D.

AU - De Rosa, G.

AU - Martini, Paul

AU - Kochanek, C. S.

AU - Zu, Y.

AU - Shappee, B.

AU - Siverd, R.

AU - Beatty, T. G.

AU - Sergeev, S. G.

AU - Kaspi, S.

AU - Salvo, C. Araya

AU - Bird, J. C.

AU - Bord, D. J.

AU - Borman, G. A.

AU - Che, X.

AU - Chen, C.

AU - Cohen, S. A.

AU - Dietrich, M.

AU - Doroshenko, V. T.

AU - Efimov, Yu S.

AU - Free, N.

AU - Ginsburg, I.

AU - Henderson, C. B.

AU - King, A. L.

AU - Mogren, K.

AU - Molina, M.

AU - Mosquera, A. M.

AU - Nazarov, S. V.

AU - Okhmat, D. N.

AU - Pejcha, O.

AU - Rafter, S.

AU - Shields, J. C.

AU - Skowron, J.

AU - Szczygiel, D. M.

AU - Valluri, M.

AU - Van Saders, J. L.

PY - 2013/2/10

Y1 - 2013/2/10

N2 - We present velocity-resolved reverberation results for five active galactic nuclei. We recovered velocity-delay maps using the maximum entropy method for four objects: Mrk 335, Mrk 1501, 3C 120, and PG 2130+099. For the fifth, Mrk 6, we were only able to measure mean time delays in different velocity bins of the Hβ emission line. The four velocity-delay maps show unique dynamical signatures for each object. For 3C 120, the Balmer lines show kinematic signatures consistent with both an inclined disk and infalling gas, but the He II λ4686 emission line is suggestive only of inflow. The Balmer lines in Mrk 335, Mrk 1501, and PG 2130+099 show signs of infalling gas, but the He II emission in Mrk 335 is consistent with an inclined disk. We also see tentative evidence of combined virial motion and infalling gas from the velocity-binned analysis of Mrk 6. The maps for 3C 120 and Mrk 335 are two of the most clearly defined velocity-delay maps to date. These maps constitute a large increase in the number of objects for which we have resolved velocity-delay maps and provide evidence supporting the reliability of reverberation-based black hole mass measurements.

AB - We present velocity-resolved reverberation results for five active galactic nuclei. We recovered velocity-delay maps using the maximum entropy method for four objects: Mrk 335, Mrk 1501, 3C 120, and PG 2130+099. For the fifth, Mrk 6, we were only able to measure mean time delays in different velocity bins of the Hβ emission line. The four velocity-delay maps show unique dynamical signatures for each object. For 3C 120, the Balmer lines show kinematic signatures consistent with both an inclined disk and infalling gas, but the He II λ4686 emission line is suggestive only of inflow. The Balmer lines in Mrk 335, Mrk 1501, and PG 2130+099 show signs of infalling gas, but the He II emission in Mrk 335 is consistent with an inclined disk. We also see tentative evidence of combined virial motion and infalling gas from the velocity-binned analysis of Mrk 6. The maps for 3C 120 and Mrk 335 are two of the most clearly defined velocity-delay maps to date. These maps constitute a large increase in the number of objects for which we have resolved velocity-delay maps and provide evidence supporting the reliability of reverberation-based black hole mass measurements.

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