Monitoring of the optical and 2.5-11.7 mu m spectrum and mid-IR imaging of the Seyfert 1 galaxy Mrk 279 with ISO
Maria Santos-Lleo,J. Clavel,Benjamin L. Schulz,Bruno Altieri,P. Barr,Danielle Alloin,Perry Berlind,R. Bertram,R. Bertram,D. M. Crenshaw,Rick Edelson,Uriel Giveon,Keith Horne,John P. Huchra,Shai Kaspi,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Yu. F. Malkov,Hagai Netzer,P. T. O'Brien,Bradley M. Peterson,Richard W. Pogge,V. I. Pronik,B.-C. Qian,Gail A. Reichert,P. M. Rodriguez-Pascual,S. G. Sergeev,J. Tao,Susan Tokarz,R. M. Wagner,R. M. Wagner,Willem Wamsteker,Belinda Jane Wilkes +33 more
- Vol. 369, Iss: 1, pp 57-64
TLDR
In this article, mid-infrared images of the Seyfert 1 galaxy Mrk 279 obtained with the ISO satellite are presented together with the results of a one-year monitoring campaign of the 2.5-11.7 mum spectrum.Abstract:
Mid-infrared images of the Seyfert 1 galaxy Mrk 279 obtained with the ISO satellite are presented together with the results of a one-year monitoring campaign of the 2.5-11.7 mum spectrum. Contemporaneous optical photometric and spectrophotometric observations are also presented. The galaxy appears as a point-like source at the resolution of the ISOCAM instrument (4-5 "). The 2.5-11.7 mum average spectrum of the nucleus in Mrk 279 shows a strong power law continuum with alpha = -0.80 +/- 0.05 (F nu proportional to nu (alpha)) and weak PAK emission features. The Mrk 279 spectral energy distribution shows a mid-IR bump, which extends from 2 to 15-20 mum The mid-IR bump is consistent with thermal emission from dust grains at a distance of greater than or similar to 100 It-d. No significant variations of the mid-IR flux have been detected during our observing campaign, consistent with the relatively low amplitude (similar to 10% rms) of the optical variability during the campaign. The time delay for H beta line emission in response to the optical continuum variations is tau = 16.7(-5.6)(+5.3), days, consistent with previous measurements.read more
Citations
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Central masses and broad-line region sizes of active galactic nuclei. ii. a homogeneous analysis of a large reverberation-mapping database
Bradley M. Peterson,Laura Ferrarese,Karoline M. Gilbert,Karoline M. Gilbert,Shai Kaspi,Shai Kaspi,M. Malkan,D. Maoz,David Merritt,Hagai Netzer,Christopher A. Onken,Richard W. Pogge,Marianne Vestergaard,Amri Wandel +13 more
TL;DR: In this article, a reanalysis of broad emission-line reverberation-mapping data was carried out for 35 active galactic nuclei (AGNs) based on a complete and consistent reanalysis, and it was shown that the highest precision measure of the virial product cτΔV2/G is obtained by using the cross-correlation function centroid (cf.
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The Low-luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
Misty C. Bentz,Kelly D. Denney,Catherine J. Grier,Aaron J. Barth,Bradley M. Peterson,Marianne Vestergaard,Marianne Vestergaard,Vardha N. Bennert,Gabriela Canalizo,Gisella De Rosa,Alexei V. Filippenko,Elinor L. Gates,Jenny E. Greene,Weidong Li,Matthew A. Malkan,Richard W. Pogge,Daniel Stern,Tommaso Treu,Jong-Hak Woo +18 more
TL;DR: In this article, the authors present an updated and revised analysis of the relationship between the H{beta} broadline region (BLR) radius and the luminosity of the active galactic nucleus (AGN).
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Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations
TL;DR: In this article, a sample of optical light curves for 100 quasars, 70 of which have black hole mass estimates, was used to estimate the characteristic timescale and amplitude of flux variations; their approach is not affected by biases introduced from discrete sampling effects.
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The Radius-Luminosity Relationship For Active Galactic Nuclei: The Effect of Host-Galaxy Starlight On Luminosity Measurements. II. The Full Sample of Reverberation-Mapped AGNs
Misty C. Bentz,Misty C. Bentz,Bradley M. Peterson,Hagai Netzer,Richard W. Pogge,Marianne Vestergaard +5 more
TL;DR: In this paper, the authors presented high-resolution Hubble Space Telescope images of all 35 active galactic nuclei (AGNs) with optical reverberation-mapping results, which they have modeled to create a nucleus-free image of each AGN host galaxy.
Journal ArticleDOI
The Radius-Luminosity Relationship for Active Galactic Nuclei: The Effect of Host-Galaxy Starlight on Luminosity Measurements
Misty C. Bentz,Bradley M. Peterson,Richard W. Pogge,Marianne Vestergaard,Christopher A. Onken,Christopher A. Onken +5 more
TL;DR: In this article, the authors measured the host-galaxy starlight contribution to the continuum luminosity at 5100? through the typical ground-based slit position and geometry used in the reverberation-mapping campaigns.
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