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Study of the Carbon Star T Draconis
Tatarnikov, A. M.; Shenavrin, V. I.; Zheltoukhov, S. G. +2 more
We present the results of the infrared photometric observations in the $JHKLM$ bands and infrared spectroscopic observations in the range 1-2.5 $µ$m for the carbon Mira star T Dra performed from 2019 to 2023. An analysis of the photometric observations shows the presence of both pulsational brightness fluctuations with an amplitude falling f…
Multicolor Photometry and Peculiarities of the Spectrum for the post-AGB Candidate AU Vulpeculae (IRAS 20160+2734)
Esipov, V. F.; Ikonnikova, N. P.; Tatarnikov, A. M. +7 more
We present the results of a UBVRcIc and JHKLM photometric monitoring campaign conducted in 2016-2020, low-resolution spectroscopy, and an analysis of the ASAS-3 and ASAS-SN photometric data for the semiregular variable and post-AGB candidate AU Vul (IRAS 20160+2734). The star is shown to experience quasi-periodic brightness oscillations with a var…
Estimates of Extragalactic Background and Confusion Noise Parameters for the Millimetron Telescope
Pilipenko, S. V.; Ermash, A. A.; Lukash, V. N.
The sensitivity of future far-infrared telescopes, such as Millimetron, will be limited by the confusion noise produced by distant galaxies. We have constructed a model of the cosmic infrared background whose main goal is to investigate the confusion noise parameters. The model is based on the publicly accessible eGALICS simulation. For each galax…