naa a22 4500 510732623 CHVBK 20180411082958.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1134/S1063772913010071 doi (NATIONALLICENCE)springer-10.1134/S1063772913010071 Activity of the Seyfert galaxy NGC 4151 in the near-IR in 1994-2011 [Elektronische Daten] [O. Taranova, V. Shenavrin] We present the results of our infrared J H K L photometry of the Seyfert galaxy NGC 4151 during its active period in 1995-2011. The variable IR source was still in its active state in 2011, though its observed luminosity had almost halved compared to the maximum of 1995-1996. If the "cool” component of the galaxy's variable source is a dust shell heated with the central "hot” source, its optical depth at 1.25 µm varied from 0.3 to almost 1.0, its temperature from 700 to 950 K, its size from 20 to 40 pc, and its mass from 2 to 40M ⊙ during our observations. A component with a period of 317 ± 5 days can be revealed in the flux variations observed in 1994-2011. Pleiades Publishing, Ltd., 2013 Taranova O. Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetskii pr. 13, 119991, Moscow, Russia aut Shenavrin V. Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetskii pr. 13, 119991, Moscow, Russia aut Astronomy Reports SP MAIK Nauka/Interperiodica 57/2(2013-02-01), 71-83 1063-7729 57:2<71 2013 57 11444 https://doi.org/10.1134/S1063772913010071 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063772913010071 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Taranova O. Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetskii pr. 13, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Shenavrin V. Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetskii pr. 13, 119991, Moscow, Russia aut NATIONALLICENCE 773 0- Astronomy Reports SP MAIK Nauka/Interperiodica 57/2(2013-02-01), 71-83 1063-7729 57:2<71 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer