Results 11 to 20 of about 329,423 (212)

A New Sample of (Wandering) Massive Black Holes in Dwarf Galaxies from High-resolution Radio Observations [PDF]

Astrophysical Journal, 2019
We present a sample of nearby dwarf galaxies with radio-selected accreting massive black holes (BHs), the majority of which are non-nuclear. We observed 111 galaxies using sensitive, high-resolution observations from the Karl G.
A. Reines, J. Condon, J. Darling, J. Greene   +3 more
semanticscholar   +1 more source

Gaia DR2 proper motions of dwarf galaxies within 420 kpc [PDF]

Astronomy & Astrophysics, 2018
A proper understanding of the Milky Way (MW) dwarf galaxies in a cosmological context requires knowledge of their 3D velocities and orbits. However, proper motion (PM) measurements have generally been of limited accuracy and are available only for more ...
T. Fritz, G. Battaglia, M. Pawlowski, N. Kallivayalil, R. V. D. Marel, R. V. D. Marel, S. Sohn, C. Brook, G. Besla   +8 more
semanticscholar   +1 more source

Associations of Dwarf Galaxies [PDF]

The Astronomical Journal, 2006
50 pages, 2 tables, 15 encapsulated figures, 1 (3 part) jpg figure.
Luca Rizzi, Shoko Sakai, Valentina E. Karachentseva, Edward J. Shaya, Dmitry Makarov, Andrew E. Dolphin, R. Brent Tully, Igor D. Karachentsev, Lidia Makarova, Lidia Makarova, Lidia Makarova   +10 more
openaire   +3 more sources

Star formation histories of dwarf galaxies in the FIRE simulations: dependence on mass and Local Group environment [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We study star formation histories (SFHs) of 500 dwarf galaxies (stellar mass $M_\ast =10^5\!-\!10^9\, \rm {M}_\odot$) from FIRE-2 cosmological zoom-in simulations. We compare dwarfs around individual Milky Way (MW)-mass galaxies, dwarfs in Local Group (
S. Garrison-Kimmel, A. Wetzel, P. Hopkins, R. Sanderson, R. Sanderson, K. El-Badry, A. Graus, A. Graus, T. K. Chan, R. Feldmann, M. Boylan-Kolchin, C. Hayward, J. Bullock, Alex Fitts, J. Samuel, Coral Wheeler, D. Keres̆, C. Faucher-Giguére   +17 more
semanticscholar   +1 more source

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
openaire   +12 more sources

The Pristine dwarf galaxy survey–V. The edges of the dwarf galaxy Hercules

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present a new spectroscopic study of 175 stars in the vicinity of the dwarf galaxy Hercules (d ∼ 132 kpc) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system to solve the conundrum that whether Hercules is tidally disrupting.
Nicolas Longeard, Pascale Jablonka, Giuseppina Battaglia, Khyati Malhan, Nicolas Martin, Rubén Sánchez-Janssen, Federico Sestito, Else Starkenburg, Kim A Venn   +8 more
openaire   +4 more sources

AGN-Driven Outflows in Dwarf Galaxies [PDF]

Astrophysical Journal, 2019
We present spatially resolved kinematic measurements of active galactic nucleus (AGN)-driven outflows in dwarf galaxies in the stellar mass range ∼6 × 108–9 × 109 M⊙, selected from SDSS DR7 and DR8 and followed-up with Keck/LRIS spectroscopy.
Christina M. Manzano-King, G. Canalizo, L. Sales   +2 more
semanticscholar   +1 more source

The formation of ultra-compact dwarf galaxies and nucleated dwarf galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Ultra compact dwarf galaxies (UCDs) have similar properties as massive globular clusters or the nuclei of nucleated galaxies. Recent observations suggesting a high dark matter content and a steep spatial distribution within groups and clusters provide new clues as to their origins.
Stelios Kazantzidis, Joachim Stadel, Tobias Kaufmann, Tobias Goerdt, Tobias Goerdt, Ben Moore, Andrea V. Macciò   +6 more
openaire   +6 more sources

THE OBSERVED PROPERTIES OF DWARF GALAXIES IN AND AROUND THE LOCAL GROUP [PDF]

, 2012
Positional, structural, and dynamical parameters for all dwarf galaxies in and around the Local Group are presented, and various aspects of our observational understanding of this volume-limited sample are discussed.
A. McConnachie
semanticscholar   +1 more source

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