Associations of Dwarf Galaxies

By R. B. Tully, L. Rizzi, A. Dolphin, I. Karachentsev, V. Karachentseva, Dmitry I. Makarov, L. Makarova, S. Sakai, Edward Shaya. 2006

140 citations recorded by the source corpus.

The Hubble Space Telescope Advanced Camera for Surveys has been used to determine accurate distances for 20 galaxies from measurements of the luminosity of the brightest red giant branch stars. Five associations of dwarf galaxies that had originally been identified based on strong correlations on the plane of the sky and in velocity are shown to be equally well correlated in distance. Two more associations with similar properties have been discovered. Another association is identified that is suggested to be unbound through tidal disruption. The associations have the spatial and kinematic properties expected of bound structures with × 1011 M⊙. However, these entities have little light, with the consequence that the mass-to-light ratios are in the range 100-1000 M⊙ L. Within a well-surveyed volume extending to a 3 Mpc radius, all but one known galaxy lie within one of the groups or associations that have been identified.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/6e468a3f69f22d6268abb82e38fa649312678054

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Instrumentation

Citations in the corpus

THE EXTRAGALACTIC DISTANCE DATABASE (2009, result): “More recent results are reported by Karachentsev et al. (2006) and Tully et al. (2006).”
The Dark Matter Crisis: Falsification of the Current Standard Model of Cosmology (2012, background): “Also, what about the more isolated dwarf-galaxy groups (Tully et al. 2006)?’”
BEASTS OF THE SOUTHERN WILD: DISCOVERY OF NINE ULTRA FAINT SATELLITES IN THE VICINITY OF THE MAGELLANIC CLOUDS (2015, background): “This was inspired by Tully et al. (2006) observational discovery of a number of nearby associations of dwarf galaxies just outside the Local Group at distances of ∼ 5 Mpc.”
Our Peculiar Motion Away from the Local Void (2007, background): “The 14+19 association of dwarf galaxies (Tully et al. 2006) involves 4 galaxies with well established distances (7.8± 0.3 Mpc) and velocities (195±26 km s−1 in the Local Sheet frame).”
Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation (2014, background): “All dwarf galaxies cannot, however, be TDGs because isolated late-type dwarf galaxies and dwarf-galaxy groups [165], as discussed e.”
Sweating the small stuff: simulating dwarf galaxies, ultra-faint dwarf galaxies, and their own tiny satellites (2015, background): “Associations and pairs of satellite galaxies in the Local Group have been observed for some time (Tully et al. 2006; D’Onghia & Lake 2008; Ibata et al. 2013; Fattahi et al. 2013), and several Milky Way satellites are suspected to host their own satellites (Pace et al. 2014; Deason et al. 2014).”
FIGGS: Faint Irregular Galaxies GMRT Survey – overview, observations and first results (2008, unknown): “…(2000); 11: Hopp & Schulte-Ladbeck (1995); 12: Bremnes, Binggeli & Prugniel (1999); 13: Sharina et al. (2008); 14: Begum & Chengalur (2004b); 15: Tully et al. (2006); 16: Corbin et al. (2008); 17: Karachentsev et al. (2006); 18: Ferguson, Gallagher & Wyse (2000); 19: Chengalur et al. (in…”
A GALEX ULTRAVIOLET IMAGING SURVEY OF GALAXIES IN THE LOCAL VOLUME (2010, background): “UGCA276 belongs to a prominent association of dwarf galaxies around NGC 4214 at 2.9 Mpc (Tully et al. 2006).”
An Hα Imaging Survey of Galaxies in the Local 11 Mpc Volume (2004, background): “…) and groundbased telescopes, direct stellar distances are being obtained for large numbers of galaxies with distances within 5 Mpc (e.g., Karachentsev et al. 2004 and references therein; Tully et al. 2006), but they are available for only a handful of objects near the survey distance boundary.”
Galaxy Groups Within 3500 km s−1 (2017, methodology): “In both cases, velocities alone are not a discriminant but distance measures clearly identify the collections of dwarfs to be distinctly to the foreground (Tully et al. 2006).”
THE ACS NEARBY GALAXY SURVEY TREASURY (2007, background): “Several of Tully et al. (2006)’s “dwarf groups” are also included in the ANGST survey volume (14+12, 14+13 14+07,14+08; the first two are the NGC 3109 and NGC 55/NGC 300 groups mentioned above).”
Globular cluster systems in nearby dwarf galaxies – III. Formation efficiencies of old globular clusters (2010, background): “These snapshot surveys provide Tip-of-the-Red-Giant-Branch distances to all dwarf galaxies in the studied sample (Tully et al. 2006; Karachentsev et al. 2006, 2007), and deep observations to study the GC systems of the dwarf galaxies.”