N. A. Maslennikova
A5035936802- Stellar, planetary, and galactic studies
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Calibration and Measurement Techniques
- Astronomy and Astrophysical Research
- Infrared Target Detection Methodologies
- Gamma-ray bursts and supernovae
- Atmospheric Ozone and Climate
- Spectroscopy and Laser Applications
- Astro and Planetary Science
- Impact of Light on Environment and Health
- Galaxies: Formation, Evolution, Phenomena
- Adaptive optics and wavefront sensing
- Astrophysics and Star Formation Studies
- Inertial Sensor and Navigation
- Remote Sensing in Agriculture
- High-pressure geophysics and materials
Lomonosov Moscow State University
2022-2024
Moscow State University
2023
Abstract We present an estimate of the occurrence rate hot Jupiters (7 R ⊕ ≤ p 2 J , 0.8 P b 10 days) around early-type M dwarfs based on stars observed by Transiting Exoplanet Survey Satellite (TESS) during its primary mission. adopt stellar parameters from TESS Input Catalog and construct a sample 60,819 with 10.5 T mag 13.5, effective temperatures 2900 eff 4000 K, masses 0.45 * 0.65 ⊙ . conduct uninformed transit search using detection pipeline box least square characterize searching...
Abstract JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5000 confirmed planets, more than 4000 Transiting Exoplanet Survey Satellite (TESS) planet candidates still unconfirmed and many the best planets for atmospheric characterization may remain be identified. We present a sample TESS that we identify as “best-in-class” transmission emission spectroscopy with JWST. These targets sorted into bins across equilibrium...
In this paper we analyse the measurements of brightness night sky above CMO SAI MSU in visible and near-infrared range made 2019-2014. 2023-2024 median zenith moonless was 21.31 mag B band, 20.63 V 20.15 Rc 19.11 Ic band. 5 years had increased by 0.7 V, 0.45 Rc, ~0.1 Ic. We found that growth is mostly (up to ~85%) due increasing light pollution from nearby cities, while remainder can be attributed increase solar activity after 2019 minimum. discuss how influenced such factors as airmass...
We present an observational study of the luminous red nova (LRN) AT\,2021biy in nearby galaxy NGC\,4631. The field object was routinely imaged during pre-eruptive stage by synoptic surveys, but transient detected only at a few epochs from $\sim 231$\,days before maximum brightness. LRN outburst monitored with unprecedented cadence both photometrically and spectroscopically. shows short-duration blue peak, bolometric luminosity 1.6 \times 10^{41}$\,erg\,s$^{-1}$, followed longest plateau...
JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5,000 confirmed planets, more than 4,000 TESS planet candidates still unconfirmed and many the best planets for atmospheric characterization may remain be identified. We present a sample that we identify as "best-in-class" transmission emission spectroscopy with JWST. These targets sorted into bins across equilibrium temperature $T_{\mathrm{eq}}$ planetary radius...
The results of modeling the dependence red leak photometric filters on various factors (color index V-R, luminosity class, interstellar reddening, airmass and PWV) during observations stars are presented. error arising from not taking into account in case used 0.6-m telescope CMO SAI can amount to 0.6-0.8 mag for late stars. Algorithms reducing observational data presented U B. rapid variability two symbiotic CH Cyg SU Lyn with cold components very spectral types For Cyg, was detected both...
We present the results of a study dependence “red leak” filters U and B from color index V - R stars interstellar reddening. A comparison with diherent red leak contributions is made. The error arising undercounting in case filter used on 0.6-m telescope CMO SAI can be up to 0.6-0.8m for late spectral types large observations four UBVRcIc bands corrections account are presented.
We present the results of photometric and spectroscopic monitoring campaigns changing look AGN NGC~2617 carried out from 2016 until 2022 covering wavelength range X-ray to near-IR. The facilities included telescopes SAI MSU, MASTER Global Robotic Net, 2.3-m WIRO telescope, Swift, others. found significant variability at all wavelengths and, specifically, in intensities profiles broad Balmer lines. measured time delays ~ 6 days (~ 8 days) responses H-beta (H-alpha) line continuum variations....
The results of modeling the dependence «red leak» photometric filters on various factors (color index 𝑉 −𝑅, luminosity class, interstellar reddening, air mass and PWV) during observations stars are presented. error arising from not taking into account in case used 0.6-m telescope CMO SAI can amount to 0.6 𝑚 − 0.8 for late stars. Algorithms reducing observational data presented 𝑈 𝐵. rapid variability two symbiotic CH Cyg SU Lyn with cold components very spectral types For Cyg, was detected...
We present an estimate of the occurrence rate hot Jupiters ($7\ R_{\oplus}\leq R_{p}\leq 2\ R_{J}$, $0.8 \leq P_{b}\leq 10$ days) around early-type M dwarfs based on stars observed by TESS during its Primary Mission. adopt stellar parameters from Input Catalog, and construct a sample 60,819 with $10.5 T_{\rm mag}\leq 13.5$, effective temperature $2900 eff}\leq 4000\ K$ mass $0.45\leq M_{\ast}\leq 0.65\ M_{\odot}$. conduct uninformed transit search using detection pipeline box least square...