Results 21 to 30 of about 337,928 (232)

An Overview of the Dwarf Galaxy Survey [PDF]

Publications of the Astronomical Society of the Pacific, 2013
The Dwarf Galaxy Survey (DGS) program is studying low-metallicity galaxies using 230h of far-infrared (FIR) and submillimetre (submm) photometric and spectroscopic observations of the Herschel Space Observatory and draws to this a rich database of a wide range of wavelengths tracing the dust, gas and stars.
Madden, S. C., Remy-Ruyer, A., Galametz, M., Cormier, D., Lebouteiller, V., Galliano, F., Hony, S., Bendo, G. J., Smith, M. W. L., Pohlen, M., Roussel, H., Sauvage, M., Wu, R., Sturm, E., Poglitsch, A., Contursi, A., Doublier, V., Baes, M., Barlow, M. J., Boselli, A., Boquien, M., Carlson, L. R., Ciesla, L., Cooray, A., Cortese, L., Looze, I., Irwin, J. A., Isaak, K., Kamenetzky, J., Karczewski, O. L., Lu, N., Machattie, J. A., O'Halloran, B., Parkin, T. J., Rangwala, N., Schirm, M. R. P., Schulz, B., Spinoglio, L., Vaccari, M., Wilson, C. D., Wozniak, H.   +40 more
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Dark matter heats up in dwarf galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2018
Gravitational potential fluctuations driven by bursty star formation can kinematically ‘heat up’ dark matter at the centres of dwarf galaxies. A key prediction of such models is that, at a fixed dark matter halo mass, dwarfs with a higher stellar mass ...
J. Read, Matthew C. Walker, P. Steger
semanticscholar   +1 more source

THE NATURE OF RED DWARF GALAXIES [PDF]

The Astrophysical Journal, 2009
9 pages, 8 figures, Accepted for publication in ...
Wang, Y, Yang, XH, Mo, HJ, van den Bosch, FC, Katz, N, Pasquali, A, McIntosh, DH, Weinmann, SM   +7 more
openaire   +3 more sources

Star Formation in Isolated Dwarf Galaxies Hosting Tidal Debris: Extending the Dwarf–Dwarf Merger Sequence [PDF]

Astronomical Journal, 2019
Like massive galaxies, dwarf galaxies are expected to undergo major mergers with other dwarfs. However, the end state of these mergers and the role that merging plays in regulating dwarf star formation are uncertain.
E. Kado-Fong, J. Greene, J. Greco, R. Beaton, A. Goulding, S. Johnson, Y. Komiyama   +6 more
semanticscholar   +1 more source

Dwarf Galaxies with the Highest Concentration Are Not Thicker than Ordinary Dwarf Galaxies

The Astrophysical Journal, 2023
Abstract The formation mechanism of high-concentration dwarf galaxies is still a mystery. We perform a comparative study of the intrinsic shape of nearby low-mass galaxies with different stellar concentration. The intrinsic shape is parameterized by the intermediate-to-major axis ratios B/A and the minor-to-major axis ratios C/A of ...
Lijun Chen, Hong-Xin Zhang, Zesen Lin, Guangwen Chen, Bojun Tao, Zhixiong Liang, Zheyu Lin, Xu Kong   +7 more
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Dwarf elliptical galaxies

The Astronomy and Astrophysics Review, 1994
63p, uuencoded compressed postscript, 2/8 figs included, A&A Review in press, request paper copies from ferguson@stsci.edu, STScI ...
Ferguson, Henry C., Binggeli, Bruno
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DWARF GALAXIES AND THE COSMIC WEB [PDF]

The Astrophysical Journal, 2013
We use a cosmological simulation of the formation of the Local Group of Galaxies to identify a mechanism that enables the removal of baryons from low-mass halos without appealing to feedback or reionization. As the Local Group forms, matter bound to it develops a network of filaments and pancakes.
Benítez-Llambay, Alejandro, Navarro, Julio F., Abadi, Mario G., Gottlöber, Stefan, Yepes Alonso, Gustavo, Hoffman, Yehuda, Steinmetz, Matthias   +6 more
openaire   +5 more sources

Radio jets from AGNs in dwarf galaxies in the COSMOS survey: mechanical feedback out to redshift ∼3.4 [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Dwarf galaxies are thought to host the remnants of the early Universe seed black holes (BHs) and to be dominated by supernova feedback. However, recent studies suggest that BH feedback could also strongly impact their growth. We report the discovery of
M. Mezcua, H. Suh, F. Civano
semanticscholar   +1 more source

AGN in dwarf galaxies: frequency, triggering processes and the plausibility of AGN feedback [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2019
While active galactic nuclei (AGN) are considered to be key drivers of the evolution of massive galaxies, their potentially significant role in the dwarf-galaxy regime (M* < 109 M⊙) remains largely unexplored. We combine optical and infrared data, from
S. Kaviraj, G. Martin, J. Silk
semanticscholar   +1 more source

Giant halos in dwarf irregular galaxies vs. dwarf elliptical galaxies [PDF]

Proceedings of the International Astronomical Union, 2005
We present a discovery of a giant stellar halo in NGC 6822, a dwarf irregular galaxy in the Local Group. This halo is mostly made of old red giants, showing striking features: 1) it is several times larger than the main body of the galaxy seen in the optical images, and 2) it is elongated in the direction almost perpendicular to the HI disk of NGC 6822.
Lee, Myung Gyoon, Hwang, Narae
openaire   +2 more sources