Zobrazeno 1 - 10
of 430
pro vyhledávání: '"Zinchenko, A I"'
Massive stars play an important role in the Universe. Unlike low-mass stars, the formation of these objects located at great distances is still unclear. It is expected to be governed by some combination of self-gravity, turbulence, and magnetic field
Externí odkaz:
http://arxiv.org/abs/2408.03271
The S255IR-SMA1 core contains the protostar NIRS3 with a mass of $\sim$20 M$_\odot$. Several years ago, the first burst of luminosity for massive protostars, caused by an episodic accretion event, was recorded here. We have been studying this object
Externí odkaz:
http://arxiv.org/abs/2408.03133
Autor:
Churazov, E., Khabibullin, I., Bykov, A. M., Chugai, N. N., Sunyaev, R. A., Utrobin, V. P., Zinchenko, I. I.
We argue that the North Polar Spur (NPS) and many less prominent structures are formed by gaseous metal-rich plumes associated with star-forming regions (SFRs). The SFRs located at the tangent to the 3-5 kpc rings might be particularly relevant to NP
Externí odkaz:
http://arxiv.org/abs/2408.00752
Autor:
Khabibullin, Ildar I., Churazov, Eugene M., Chugai, Nikolai N., Bykov, Andrei M., Sunyaev, Rashid A., Utrobin, Victor P., Zinchenko, Igor I., Michailidis, Miltiadis, Puehlhofer, Gerd, Becker, Werner, Freyberg, Michael, Merloni, Andrea, Santangelo, Andrea, Sasaki, Manami
The Simeis~147 nebula (S147), particularly well known for a spectacular net of ${\rm H}_\alpha$-emitting filaments, is often considered one of the largest and oldest known supernova remnants in the Milky Way. Here, and in a companion paper, we presen
Externí odkaz:
http://arxiv.org/abs/2401.17261
We use spectra and maps of the $J=1-0$ and $J=2-1$ DCO$^{+}$, DCN, DNC, $\rm N_2D^+$ lines and $1_{11}-1_{01}$ ortho- and para-NH$_{2}$D lines, obtained with the IRAM-30m telescope, as well as observations of their hydrogenated isotopologues to study
Externí odkaz:
http://arxiv.org/abs/2309.16510
Autor:
Bhadari, N. K., Dewangan, L. K., Pirogov, L. E., Pazukhin, A. G., Zinchenko, I. I., Maity, A. K., Sharma, Saurabh
We present an analysis of the dense gas structures in the immediate surroundings of the massive young stellar object (MYSO) W42-MME, using the high-resolution (0$''$.31$\times$0$''$.25) ALMA dust continuum and molecular line data. We performed a dend
Externí odkaz:
http://arxiv.org/abs/2309.16472
Autor:
Zinchenko, Igor I.
We present a review of observational studies of high-mass star formation, based mainly on our own research. It includes surveys of high-mass star-forming regions in various molecular lines and in continuum, investigations of filamentary infrared dark
Externí odkaz:
http://arxiv.org/abs/2211.15586
Publikováno v:
Astron. Rep. 66 (2022) 1302-1310
With the 30-m IRAM radio telescope, we observed several massive star forming regions at wavelengths of 3-4 and 2 mm. The temperature of the gas in the sources was estimated from the lines of CH$_{3}$CCH and from the transitions of the NH$_3$ molecule
Externí odkaz:
http://arxiv.org/abs/2211.14063
Autor:
Zinchenko, Igor I., Pazukhin, Andrey G., Trofimova, Elena A., Zemlyanukha, Peter M., Henkel, Christian, Thomasson, Magnus
We present the results of our studies of deuterated molecules (DCN, DNC, DCO$^+$, N$_2$D$^+$ and NH$_2$D) in regions of high-mass star formation, which include a survey of such regions with the 20-m Onsala radio telescope and mapping of several objec
Externí odkaz:
http://arxiv.org/abs/2209.07832
Autor:
Zemlyanukha, Petr, Zinchenko, Igor I., Dombek, Evgeny, Pirogov, Lev E., Topchieva, Anastasiia, Joncas, Gilles, Dewangan, Lokesh K., Ojha, Devendra K., Ghosh, Swarna K.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 515, Issue 2, September 2022, Pages 2445-2463
The environment of S187, a nearby H II region (1.4$\pm$0.3 kpc), is analyzed. A surrounding shell has been studied in the H I line, molecular lines, and also in infrared and radio continua. We report the first evidence of a clumpy HI environment in i
Externí odkaz:
http://arxiv.org/abs/2207.05507