Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Parfenov S"'
Autor:
McCarthy, T. P., Breen, S. L., Kaczmarek, J. F., Chen, X., Parfenov, S., Sobolev, A. M., Ellingsen, S. P., Burns, R. A., MacLeod, G. C., Sugiyama, K., Brierley, A. L., Heever, S. P. van den
We report the detection of ammonia masers in the non-metastable (6, 3), (7, 5) and (6, 5) transitions, the latter is the first unambiguous maser detection of that transition ever made. Our observations include the first VLBI detection of ammonia mase
Externí odkaz:
http://arxiv.org/abs/2304.13222
In this study, we explore the impact of inhomogeneities in the spatial distribution of interstellar dust on spatial scales of $\le1$ au caused by ion shadowing forces on the optical properties of diffuse interstellar medium (ISM) as well as on the du
Externí odkaz:
http://arxiv.org/abs/2005.10601
Autor:
Parfenov, S. Yu., Semenov, D. A., Henning, Th., Shapovalova, A. S., Sobolev, A. M., Teague, R.
The recent detection of gas-phase methanol (CH$_3$OH) lines in the disc of TW Hya by Walsh et al. provided the first observational constraints on the complex O-bearing organic content in protoplanetary discs. The emission has a ring-like morphology,
Externí odkaz:
http://arxiv.org/abs/1703.03748
The understanding of organic content of protoplanetary discs is one of the main goals of the planet formation studies. As an attempt to guide the observational searches for weak lines of complex species in discs, we modelled the (sub-)millimetre spec
Externí odkaz:
http://arxiv.org/abs/1605.03729
We present the results of investigation of five stars, originally classified as dwarfs, belonging to Cyg OB2 association, their stellar and wind properties. Using both TLUSTY and CMFGEN codes we derived effective temperatures, surface gravities, chem
Externí odkaz:
http://arxiv.org/abs/1512.05416
Publikováno v:
Mon. Not. R. Astron. Soc., 2015, Vol. 452, Issue 3, P. 2306-2317
The main objective of this paper is to study the possibility of triggered star formation on the border of the HII region S233, which is formed by a B-star. Using high-resolution spectra we determine the spectral class of the ionizing star as B0.5 V a
Externí odkaz:
http://arxiv.org/abs/1506.05888
Autor:
Richards, A. M. S., Impellizzeri, C. M. V., Humphreys, E. M., Vlahakis, C., Vlemmings, W., Baudry, A., De Beck, E., Decin, L., Etoka, S., Gray, M. D., Harper, G. M., Hunter, T. R., Kervella, P., Kerschbaum, F., McDonald, I., Melnick, G., Muller, S., Neufeld, D., O'Gorman, E., Parfenov, S. Yu., Peck, A. B., Shinnaga, H., Sobolev, A. M., Testi, L., Uscanga, L., Wootten, A., Yates, J. A., Zijlstra, A.
Publikováno v:
A&A 572, L9 (2014)
Cool, evolved stars have copious, enriched winds. The structure of these winds and the way they are accelerated is not well known. We need to improve our understanding by studying the dynamics from the pulsating stellar surface to about 10 stellar ra
Externí odkaz:
http://arxiv.org/abs/1409.5497
Autor:
Parfenov, S. Yu., Sobolev, A. M.
We argue that the periodic variability of Class II methanol masers can be explained by variations of the dust temperature in the accretion disk around proto-binary star with at least one massive component. The dust temperature variations are caused b
Externí odkaz:
http://arxiv.org/abs/1407.7708
Autor:
McCarthy, T P, Breen, S L, Kaczmarek, J F, Chen, X, Parfenov, S, Sobolev, A M, Ellingsen, S P, Burns, R A, MacLeod, G C, Sugiyama, K, Brierley, A L, van den Heever, S P
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jul2023, Vol. 522 Issue 3, p4728-4739, 12p
С помощью двумерного численного МГД-кода Enlil исследуются изотермические стадии коллапса магнитных вращающихся протозвездных облаков.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______917::f2388099ed7fe400e5ecc64443b8effd
https://hdl.handle.net/10995/98955
https://hdl.handle.net/10995/98955