Results 41 to 50 of about 184,560 (234)

Formation of Major Types of Galaxies Based on the Energy Circulation Theory

Reports in Advances of Physical Sciences, 2022
The standard cosmology can answer almost nothing about how the structure of a galaxy is formed. It expects a supermassive black hole at the center and dark matter in the halo to explain the circulation of stars and its velocity.
Shigeto Nagao
doaj   +1 more source

A 2-3~mm high-resolution molecular line survey towards the centre of the nearby spiral galaxy NGC~6946 [PDF]

Astronomy & Astrophysics, 2022
The complex physical, kinematic, and chemical properties of galaxy centres make them interesting environments to examine with molecular line emission. We present new 2 − 4 ′′ ( ∼ 75 − 150 pc at 7 .
C. Eibensteiner, A. Barnes, F. Bigiel, E. Schinnerer, Daizhong Liu, D. Meier, A. Usero, A. Leroy, E. Rosolowsky, J. Puschnig, I. Lazar, J. Pety, L. Lopez, E. Emsellem, I. Bevsli'c, M. Querejeta, E. Murphy, J. D. Brok, A. Schruba, M. Chevance, S. Glover, Yu Gao, K. Grasha, H. Hassani, J. Henshaw, M. Jiménez-Donaire, R. Klessen, J. Kruijssen, H. Pan, T. Saito, M. Sormani, Y. Teng, T. H. M. F. Astronomie, U. Bonn, 71 AufdemHugel, 53121 Bonn, H Germany, M. F. Astronomie, 17 Konigstuhl, D. Heidelberg, Max-Planck-Institut fur extraterrestrische Physik, 1. Giessenbachstrasse, D. Garching, New Mexico Institute of Mining, Technology, 801 Leroy Place, Socorro, NM 87801, Usa, National Radio Astronomy Observatory, O. POBox, 1003 Lopezville Road, New Mexico 87801, O. Nacional, 3. CAlfonsoXII, E. Madrid, Spain., D. Astronomy, T. O. S. University, 4055 McPherson Laboratory, 140 West 18th Avenue, Columbus, OH 43210, 4-183 Ccis, U. Alberta, Edmonton, Alberta., T6G 2E1, Canada, Centre for Astrophysics Research, S. O. Physics, Astronomy, Mathematics, U. Hertfordshire, C. Lane, Hatfield AL10 9AB, Uk, Institute de Radio Astronomie Millim'etrique, 300 rue de la Piscine, F-38406 Saint Martin d'Heres, France., Lerma, O. Paris, P. university, Cnrs, Sorbonne Universit'es, 7. Paris, E. Observatory, 2. Karl-SchwarzschildStrasse, D-80805 Munchen, U. Lyon, Univ. Lyon1, É. Lyon, Centre de Recherche Astrophysique de Lyon UMR5574, Franklin France, 520 Edgemont Road, Charlottesville, VA 22903, A. Rechen-Institut, Zentrum fur Astronomie der Universitat Heidelberg, Monchhofstr. 12--14, 69117 Heidelberg, U. Heidelberg, Zentrum fur Astronomie, I. F. T. Astrophysik, 2. Albert-Ueberle-Strasse, Xiamen University, Xiamen, Fujian 361005, China., Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, Research School for Astronomy, Astrophysics, Australian National University, Canberra, Act 2611, Australia, Interdisziplinares Zentrum fur Wissenschaftliches Rechnen, Inf 205, D. Physics, T. University, No.151, Ying Rd, Tamsui Dist., New Taipei City 251301, Taiwan, Center for Computational Astrophysics, S. Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093   +133 more
semanticscholar   +1 more source

First Look at z > 1 Bars in the Rest-frame Near-infrared with JWST Early CEERS Imaging

The Astrophysical Journal Letters, 2023
Stellar bars are key drivers of secular evolution in galaxies and can be effectively studied using rest-frame near-infrared (NIR) images, which trace the underlying stellar mass and are less impacted by dust and star formation than rest-frame UV or ...
Yuchen Guo, Shardha Jogee, Steven L. Finkelstein, Zilei Chen, Eden Wise, Micaela B. Bagley, Guillermo Barro, Stijn Wuyts, Dale D. Kocevski, Jeyhan S. Kartaltepe, Elizabeth J. McGrath, Henry C. Ferguson, Bahram Mobasher, Mauro Giavalisco, Ray A. Lucas, Jorge A. Zavala, Jennifer M. Lotz, Norman A. Grogin, Marc Huertas-Company, Jesús Vega-Ferrero, Nimish P. Hathi, Pablo Arrabal Haro, Mark Dickinson, Anton M. Koekemoer, Casey Papovich, Nor Pirzkal, L. Y. Aaron Yung, Bren E. Backhaus, Eric F. Bell, Antonello Calabrò, Nikko J. Cleri, Rosemary T. Coogan, M. C. Cooper, Luca Costantin, Darren Croton, Kelcey Davis, Avishai Dekel, Maximilien Franco, Jonathan P. Gardner, Benne W. Holwerda, Taylor A. Hutchison, Viraj Pandya, Pablo G. Pérez-González, Swara Ravindranath, Caitlin Rose, Jonathan R. Trump, Alexander de la Vega, Weichen Wang   +47 more
doaj   +1 more source

CO Multi-line Imaging of Nearby Galaxies (COMING). III. Dynamical effect on molecular gas density and star formation in the barred spiral galaxy NGC 4303 [PDF]

Nippon Tenmon Gakkai obun kenkyu hokoku, 2019
We present the results of $^{12}\textrm{C}$$\textrm{O}$(J = 1–0) and $^{13}\textrm{C}$$\textrm{O}$(J = 1–0) simultaneous mappings toward the nearby barred spiral galaxy NGC 4303 as part of the CO Multi-line Imaging of Nearby Galaxies (COMING) project ...
Yoshiyuki Yajima, K. Sorai, N. Kuno, K. Muraoka, Y. Miyamoto, H. Kaneko, H. Nakanishi, N. Nakai, Takahiro Tanaka, Yuya Sato, D. Salak, K. Morokuma-Matsui, N. Matsumoto, H. Pan, Yuto Noma, T. Takeuchi, M. Yoda, Mayu Kuroda, Atsushi Yasuda, N. Oi, Shugo Shibata, M. Seta, Yoshimasa Watanabe, S. Kita, Ryusei Komatsuzaki, A. Kajikawa, Yukio Yashima   +26 more
semanticscholar   +1 more source

Exploring the Magnetic Field Geometry in NGC 891 with SOFIA/HAWC+

The Astronomical Journal, 2023
Stratospheric Observatory For Infrared Astronomy/High-resolution Airborne Wideband Camera-plus 154 μ m Far-Infrared polarimetry observations of the well-studied edge-on galaxy NGC 891 are analyzed and compared to simple disk models with ordered (planar ...
Jin-Ah Kim, Terry Jay Jones, C. Darren Dowell   +2 more
doaj   +1 more source

A 3 mm Spectral Line Survey toward the Barred Spiral Galaxy NGC 3627 [PDF]

Astrophysical Journal Supplement Series, 2019
We conduct spectral line survey observations in the 3 mm band toward a spiral arm, a bar-end, and a nuclear region of the nearby barred spiral galaxy NGC 3627 with the IRAM 30 m telescope and the Nobeyama 45 m telescope.
Yoshimasa Watanabe, Y. Nishimura, K. Sorai, N. Sakai, N. Kuno, S. Yamamoto   +5 more
semanticscholar   +1 more source

Photometry, Kinematics and Dynamics of the Magellanic-Type Barred Spiral Galaxy NGC 4027 [PDF]

, 1968
G. de Vaucouleurs, A. de Vaucouleurs, K. C. Freeman   +2 more
openalex   +2 more sources

The Barred Spiral Galaxy NGC 7479.

The Astronomical Journal, 1960
K. H. Prendergast, E. M. Burbidge, Geoffrey Burbidge   +2 more
openaire   +4 more sources

Barred Spiral Galaxies [PDF]

Symposium - International Astronomical Union, 1970
We point out some properties of barred spiral galaxies which are important for the theory of their formation and spiral structure, and describe some theoretical work on the dynamics of these systems.
openaire   +2 more sources

Effect of bars on evolution of SDSS spiral galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We explore the significance of bars in triggering central star formation (SF) and active galactic nucleus (AGN) activity for spiral galaxy evolution using a volume-limited sample with 0.020 < z < 0.055, Mr < −19.5, and σ > 70 km s−1 selected from Sloan Digital Sky Survey Data Release 7.
Minbae Kim, Yun-Young Choi, Sungsoo S Kim   +2 more
openaire   +3 more sources