Results 161 to 170 of about 470,379 (288)

100 Proof: H i Observations of 100 Nearby Dwarf Galaxies with the 100 m Green Bank Telescope

The Astronomical Journal
We describe the results of observations with the 100 m Robert C. Byrd Green Bank Telescope in the H i line of 105 nearby dwarf galaxies, 60 of which were discovered recently in the DESI Legacy Imaging Surveys.
Aleksandra E. Nazarova, John M. Cannon, Igor D. Karachentsev, Dmitry I. Makarov, Maksim I. Chazov, Lila Schisgal, William St. John   +6 more
doaj   +1 more source

Dust Deficiency in the Interacting Galaxy NGC 3077

Galaxies, 2017
Using 70 μ m observations taken with the PACS instrument of the Herschel space telescope, the dust content of the nearby and interacting spiral galaxy NGC 3077 has been compared with the dust content of the isolated galaxies such as NGC 2841, NGC ...
Jairo Armijos-Abendaño, Ericson López, Mario Llerena, Franklin Aldás, Crispin Logan   +4 more
doaj   +1 more source

Spiral Galaxies Rotation Curves with a Logarithmic Corrected Newtonian Gravitational Potential

, 2007
We analyze the rotation curves of 10 spiral galaxies with a newtonian potential corrected with an extra logarithmic term, using a disc modelization for the spiral galaxies. There is a new constant associated with the extra term in the potential.
A. Kashlinsky, B. Famaey, B. Zwiebach, C. Brans, D. Bailin, F.C. Bosch van den, G. Bertone, G.W. Angus, G.W. Angus, H.H. Soleng, I.L. Shapiro, J. Bekenstein, J. Binney, J. C. Fabris, J. Pereira Campos, J.E. Lidsey, J.Ph. Bruneton, K.C. Freeman, L. Bergström, L. Randall, M. Milgrom, M.J. Duff, P. Letelier, P. Salucci, R. Colistete Jr, R. Colistete Jr, S. Capozziello, S. Capozziello, S. Weinberg   +28 more
core   +1 more source

Star Formation in the Lopsided Galaxy Arp 291

The Astrophysical Journal
We have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus ...
Irina S. Proshina, Dmitriy V. Oparin
doaj   +1 more source

Tracing Galaxy Evolution by Their Present-Day Luminosity Function

Open Astronomy, 2011
Galaxy luminosity functions are derived for different morphological types and various colors of galaxies, to trace the evolutionary effects which a priori should be different for void and supercluster galaxies.
Tempel E.
doaj   +1 more source

Spiral structure and the rotation of galaxies [PDF]

, 1958
B. A. Vorontsov-Vel'Yaminov
openalex   +1 more source

Perspectives. [PDF]

AJNR Am J Neuroradiol, 2023
Ross JS.
europepmc   +2 more sources

Identification of Intermediate-mass Black Hole Candidates among a Sample of Sd Galaxies

The Astrophysical Journal
We analyzed images of every northern hemisphere Sd galaxy listed in the Third Reference Catalogue of Bright Galaxies with a relatively face-on inclination ( θ ≤ 30°). Specifically, we measured the spiral arms’ winding angle, ϕ , in 85 galaxies.
Benjamin L. Davis, Alister W. Graham, Roberto Soria, Zehao Jin, Igor D. Karachentsev, Valentina E. Karachentseva, Elena D’Onghia   +6 more
doaj   +1 more source

A summary and assessment of current 21-cm results concerning spiral and disk structures in our galaxy [PDF]

, 1959
J. H. Oort
openalex   +1 more source

Formation of Spiral Galaxies [PDF]

International Astronomical Union Colloquium, 1977
Conventionally, two major components of spiral galaxies are distinguished: (1) a “spheroidal component”, which includes the central bulge and the surrounding halo, and (2) a “disc component”, which is basically flat and circular but is often warped at the edges. Other structures, such as bars or rings, may also be present, but they are probably of less
openaire   +2 more sources