Zobrazeno 1 - 10
of 457
pro vyhledávání: '"Bizyaev, D. A."'
Autor:
Sholukhova, O. N., Tikhonov, N. A., Solovyeva, Y. N., Sarkisian, A. N., Vinokurov, A. S., Valcheva, A. T., Nedialkov, P. L., Bizyaev, D. V., Williams, B. F., Ivanov, V. D.
We have selected candidate massive stars in the galaxy IC 342 based on archival images from the Hubble Space Telescope and images from the 2 m telescope at the Natioal Astronomical Observatory Rozhen, Bulgaria. Spectral observations of 24 out of 27 s
Externí odkaz:
http://arxiv.org/abs/2406.15270
Autor:
Kreckel, K., Egorov, O. V., Egorova, E., Blanc, G. A., Drory, N., Kounkel, M., Mendez-Delgado, J. E., Roman-Zuniga, C. G., Sanchez, S. F., Stringfellow, G. S., Stutz, A. M., Zari, E., Barrera-Ballesteros, J. K., Bizyaev, D., Brownstein, J. R., Congiu, E., Fernandez-Trincado, J. G., Garcia, P., Hillenbrand, L., Ibarra-Medel, H. J., Jin, Y., Johnston, E. J., Jones, A. M., Kim, J. Serena, Kollmeier, J. A., Kong, S., Krishnarao, D., Kumari, N., Li, J., Long, K., Mata-Sanchez, A., Mejia-Narvaez, A., Popa, S. A., Rix, H-W, Sattler, N., Serna, J., Singh, A., Sanchez-Gallego, J. R., Wofford, A., Wong, T.
Publikováno v:
A&A 689, A352 (2024)
The Orion Molecular Cloud complex, one of the nearest (D = 406 pc) and most extensively studied massive star-forming regions, is ideal for constraining the physics of stellar feedback, but its ~12 deg diameter on the sky requires a dedicated approach
Externí odkaz:
http://arxiv.org/abs/2405.14943
Autor:
Sales-Silva, J. V., Cunha, K., Smith, V. V., Daflon, S., Souto, D., Guerço, R., Queiroz, A., Chiappini, C., Hayes, C. R., Masseron, T., Hasselquist, Sten, Horta, D., Prantzos, N., Zoccali, M., Prieto, C. Allende, Barbuy, B., Beaton, R., Bizyaev, D., Fernández-Trincado, J. G., Frinchaboy, P. M., Holtzman, J. A., Johnson, J. A., Jönsson, Henrik, Majewski, S. R., Minniti, D., Nidever, D. L., Schiavon, R. P., Schultheis, M., Sobeck, J., Stringfellow, G. S., Zasowski, G.
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of $\sim$2000 stars in the Galactic Bulge/bar spatially contained within $|X_{Gal}|<$5 kpc, $|Y_{Gal}|<
Externí odkaz:
http://arxiv.org/abs/2402.14898
Autor:
Loaiza-Tacuri, V., Cunha, K., Souto, D., Smith, V. V., Guerço, R., Chiappini, C., Silva, J. V. Sales, Horta, D., Prieto, C. Allende, Beaton, R., Bizyaev, D., Daflon, S., Frinchaboy, P., Hasselquist, S., Hayes, C. R., Holtzman, J. A., Jönsson, H., Majewski, S. R., Mészáros, S., Nidever, D. L., Pinsonneault, M., Zasowski, G.
Previous results in the literature have found the young inner-disk open cluster NGC 6705 to be mildly $\alpha$-enhanced. We examined this possibility via an independent chemical abundance analysis for 11 red-giant members of NGC 6705. The analysis is
Externí odkaz:
http://arxiv.org/abs/2309.10778
Autor:
Solovyeva, Y., Vinokurov, A., Sarkisyan, A., Kostenkov, A., Atapin, K., Fabrika, S., Oparin, D., Valeev, A., Bizyaev, D., Nedialkov, P., Spiridonova, O.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 507, Issue 3, pp.4352-4366, 2021
We continue to search for LBV stars in galaxies outside the Local Group. In this work, we have investigated four luminous stars in NGC 4449. Multiple spectral observations carried out for J122810.94+440540.6, J122811.70+440550.9, and J122809.72+44051
Externí odkaz:
http://arxiv.org/abs/2208.05892
Autor:
Oyarzun, Grecco A., Bundy, Kevin, Westfall, Kyle B., Tinker, Jeremy L., Belfiore, Francesco, Argudo-Fernandez, Maria, Zheng, Zheng, Conroy, Charlie, Masters, Karen L., Wake, David, Law, David R., McDermid, Richard M., Aragon-Salamanca, Alfonso, Parikh, Taniya, Yan, Renbin, Bershady, Matthew, Sanchez, Sebastian F., Andrews, Brett H., Fernandez-Trincado, Jose G., Lane, Richard R., Bizyaev, D., Boardman, Nicholas Fraser, Lacerna, Ivan, Brownstein, J. R., Drory, Niv, Zhang, Kai
We analyze spatially resolved and co-added SDSS-IV MaNGA spectra with signal-to-noise ~100 from 2200 passive central galaxies (z~0.05) to understand how central galaxy assembly depends on stellar mass (M*) and halo mass (Mh). We control for systemati
Externí odkaz:
http://arxiv.org/abs/2205.12999
Autor:
Makarov, D., Savchenko, S., Mosenkov, A., Bizyaev, D., Reshetnikov, V., Antipova, A., Tikhonenko, I., Usachev, P., Borisov, S., Makarova, L., Kautsch, S., Marchuk, A., Rubtsov, E.
We present a catalogue of 16551 edge-on galaxies created using the public DR2 data of the Pan-STARRS survey. The catalogue covers the three quarters of the sky above Dec.=-30 degrees. The galaxies were selected using a convolutional neural network, t
Externí odkaz:
http://arxiv.org/abs/2201.08888
Autor:
Bernardi, M., Sheth, R. K., Sanchez, H. Dominguez, Margalef-Bentabol, B., Bizyaev, D., Lane, R. R.
Gradients in the stellar populations (SP) of galaxies -- e.g., in age, metallicity, stellar Initial Mass Function (IMF) -- can result in gradients in the stellar mass to light ratio, $M_*/L$. Such gradients imply that the distribution of the stellar
Externí odkaz:
http://arxiv.org/abs/2201.07810
Autor:
Deconto-Machado, A., Riffel, R. A., Ilha, G. S., Rembold, S. B., Storchi-Bergmann, T., Riffel, R., Schimoia, J. S., Schneider, D. P., Bizyaev, D., Feng, S., Wylezalek, D., da Costa, L. N., Nascimento, J. C. do, Maia, M. A. G.
Publikováno v:
A&A 659, A131 (2022)
We analyse the kinematics of 170 AGN host galaxies as compared to those of a matched control sample of non-active galaxies from the MaNGA survey in order to characterise and estimate the extents of the Narrow Line Region (NLR) and of the kinematicall
Externí odkaz:
http://arxiv.org/abs/2201.01690
Autor:
Salvato, M., Wolf, J., Dwelly, T., Georgakakis, A., Brusa, M., Merloni, A., Liu, T., Toba, Y., Nandra, K., Lamer, G., Buchner, J., Schneider, C., Freund, S., Rau, A., Schwope, A., Nishizawa, A., Klein, M., Arcodia, R., Comparat, J., Musiimenta, B., Nagao, T., Brunner, H., Malyali, A., Finoguenov, A., Anderson, S., Shen, Y., Ibarra-Mendel, H., Trump, J., Brandt, W. N., Urry, C. M., Rivera, C., Krumpe, M., Urrutia, T., Miyaji, T., Ichikawa, K., Schneider, D. P., Fresco, A., Wilms, J., Boller, T., Haase, J., Brownstein, J., Lane, R. R., Bizyaev, D., Nitschelm, C.
Publikováno v:
A&A 661, A3 (2022)
In November 2019, eROSITA on board of SRG observatory started to map the entire sky in X-rays. After the 4-year survey program, it will reach flux limits about 25 times deeper than ROSAT. During the SRG Performance Verification phase, eROSITA observe
Externí odkaz:
http://arxiv.org/abs/2106.14520