Results 11 to 20 of about 320,186 (190)

Confrontation of MOND with the rotation curves of early-type disc galaxies [PDF]

Mon.Not.Roy.Astron.Soc.379:702-710,2007, 2007
We extend the MOND analysis to a sample of 17 high surface brightness, early-type disc galaxies with rotation curves derived from a combination of 21cm HI line observations and optical spectroscopic data. A number of these galaxies have asymptotic rotation velocities between 250 and 350 km/s making them among the most massive systems (in terms of ...
Noordermeer, E., Sanders, R. H.
arxiv   +5 more sources

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

Analysis of the escape in systems with four exit channels

Mathematical Methods in the Applied Sciences, Volume 46, Issue 1, Page 1032-1044, 15 January 2023., 2023
In this paper, we have performed a numerical investigation of the escape of a particle from two different dynamical systems with the same number of exit channels. We have chosen specific values of the parameters of the systems so that the openings of the potential well in both systems are approximately of the same size.
Juan F. Navarro, Ibrahim Belgharbi, María del Carmen Martínez‐Belda   +2 more
wiley   +1 more source

Rotation Curves of 967 Spiral Galaxies [PDF]

The Astrophysical Journal Supplement Series, 1995
We present the rotation curves (RCs) of 967 spiral galaxies, obtained by folding and deprojecting the raw optical data by Mathewson et al. (1992). Out of these, we have identified 80 excellent RCs and 820 fair RCs. The 80 excellent RCs are smooth, symmetric, have negligible rms internal error, extend to at least the optical radius, and have high and ...
Persic, M., Salucci, P.
openaire   +4 more sources

The universal rotation curve of spiral galaxies [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2006
Abstract The observed strong dark-to-luminous matter coupling is described by a bias relation between visible and dark matter sources. We discuss the bias which emerges in the case where the topological structure of the Universe at very large distances does not properly match that of the Friedman space. With the use of such ‘topological’
Kirillov, AA, Turaev, D
openaire   +6 more sources

Template Rotation Curves for Disk Galaxies [PDF]

The Astrophysical Journal, 2006
21 pages, 12 figures. To appear in the Astrophysical Journal (April 2006)
Catinella, Barbara, Giovanelli, Riccardo, Haynes, Martha P.   +2 more
openaire   +3 more sources

The Rotation Curves of Galaxies [PDF]

Symposium - International Astronomical Union, 1975
Currently available data on rotation curves are reviewed. For curves derived from optical measurements the distribution of the ratios: the last measured point on a rotation curve to the optical radius of the galaxy has a median value of if Reference Catalogue radii are used and if Holmberg radii are used.
openaire   +3 more sources

Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent [PDF]

, 2000
The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation curves to test the claim that the shape of a galaxy's ...
Adabi M. G., Adami C., Adami C., Amram P., Beauvais C., Boselli A., Daniel A. Dale, Distefano A., Eduardo Hardy, Haynes M. P., Haynes M. P., Luis E. Campusano, Martha P. Haynes, Persic M., Riccardo Giovanelli, Richter O.-G., Sperandio M.   +16 more
core   +4 more sources

Mass models from high-resolution HI data of the dwarf galaxy NGC 1560 [PDF]

, 2010
We present HI observations performed at the GMRT of the nearby dwarf galaxy NGC 1560. This Sd galaxy is well-known for a distinct "wiggle" in its rotation curve. Our new observations have twice the resolution of the previously published HI data.
Angus, Angus, B. Famaey, Barbieri, Begeman, Begeman, Bell, Bienaymé, Blumenthal, Bosma, Broeils, Bryan, Bullock, Burkert, Buta, Casertano, Corbelli, de Blok, de Jong, de Vaucouleurs, Donato, Einasto, Famaey, Famaey, Famaey, G. Gentile, Gentile, Gentile, Gentile, Gentile, Gentile, Gentile, Gnedin, Governato, Greisen, Guo, K. Van Acoleyen, Karachentsev, Kregel, Krismer, Kuzio de Naray, Lee, M. Baes, Marchesini, Mashchenko, McGaugh, McGaugh, McGaugh, McGaugh, McGaugh, McMillan, Milgrom, Milgrom, Navarro, Navarro, Navarro, Neto, Persic, Salucci, Salucci, Sancisi, Sancisi, Sandage, Sanders, Sellwood, Sellwood, Shankar, Skillman, Tamburro, Tiret, Verheijen, Visser, Wechsler, Weinberg, Zhao   +74 more
core   +1 more source

The structure and kinematics of the the Galaxy thin gaseous disc outside the solar orbit [PDF]

, 2007
The rotation curve of the Galaxy is generally thought to be flat. However, using radial velocities from interstellar molecular clouds, which is common in rotation curve determination, seems to be incorrect and may lead to incorrectly inferring that the ...
Galazutdinov, G. A., Strobel, A., Musaev, F. A., Bondar, A., Krelowski, J.   +4 more
core   +4 more sources