Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Determination of the size of the dust torus in H0507+164 through optical and infrared monitoring Subject The topic of the resource Galaxies: active; Galaxies: Seyfert; Quasars: individual: H0507+164 Description An account of the resource The time delay between flux variations in different wavelength bands can be used to probe the inner regions of active galactic nuclei (AGNs). Here, we present the first measurements of the time delay between optical and near-infrared (NIR) flux variations in H0507+164, a nearby Seyfert 1.5 galaxy at z = 0.018. The observations in the optical V-band and NIR J, H, and Ks bands carried over 35 epochs during the period 2016 October to 2017 April were used to estimate the inner radius of the dusty torus. From a careful reduction and analysis of the data using cross-correlation techniques, we found delayed responses of the J, H, and Ks light curves to the V-band light curve. In the rest frame of the source, the lags between optical and NIR bands are found to be 27.1-12.0 +13.5 d (V versus J), 30.4-12.0 +13.9 d (V versus H) and 34.6-9.6 +12.1 d (V versus Ks). The lags between the optical and different NIR bands are thus consistent with each other. The measured lags indicate that the inner edge of dust torus is located at a distance of 0.029 pc from the central ultraviolet/optical AGN continuum. This is larger than the radius of the broad line region of this object determined from spectroscopic monitoring observations thereby supporting the unification model of AGN. The location of H0507+164 in the ?-MV plane indicates that our results are in excellent agreement with the now known lag-luminosity scaling relationship for dust in AGN. 2018 The Author(s). Creator An entity primarily responsible for making the resource Mandal A.K.; Rakshit S.; Kurian K.S.; Stalin C.S.; Mathew B.; Hoenig S.; Gandhi P.; Sagar R.; Pandge M.B. Source A related resource from which the described resource is derived Monthly Notices of the Royal Astronomical Society, Vol-475, No. 4, pp. 5330-5337. Publisher An entity responsible for making the resource available Oxford University Press Date A point or period of time associated with an event in the lifecycle of the resource 2018-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1093/mnras/sty200" target="_blank" rel="noreferrer noopener">https://doi.org/10.1093/mnras/sty200</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052520742&amp;doi=10.1093%2Fmnras%2Fsty200&amp;partnerID=40&amp;md5=b8144b74e4a1492ef13dbe09313c36d8" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052520742&amp;doi=10.1093%2fmnras%2fsty200&amp;partnerID=40&amp;md5=b8144b74e4a1492ef13dbe09313c36d8</a> Rights Information about rights held in and over the resource All Open Access; Green Open Access Relation A related resource ISSN: 358711; CODEN: MNRAA Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Mandal A.K., Department of Physics, Christ University, Hosur Road, Bangalore, 560 029, India, Indian Institute of Astrophysics, Block II, Koramangala, Bangalore, 560 034, India; Rakshit S., Indian Institute of Astrophysics, Block II, Koramangala, Bangalore, 560 034, India, Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul, 151-742, South Korea; Kurian K.S., Indian Institute of Astrophysics, Block II, Koramangala, Bangalore, 560 034, India; Stalin C.S., Indian Institute of Astrophysics, Block II, Koramangala, Bangalore, 560 034, India; Mathew B., Department of Physics, Christ University, Hosur Road, Bangalore, 560 029, India; Hoenig S., Department of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom; Gandhi P., Department of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom; Sagar R., Indian Institute of Astrophysics, Block II, Koramangala, Bangalore, 560 034, India; Pandge M.B., Dayanand Science College, Barshi Road, Latur, Maharashtra, 413512, India