# An optical and H i study of the dwarf Local Group galaxy VV124 = UGC4879. A gas-poor dwarf with a stellar disk?

@article{Bellazzini2010AnOA,
title={An optical and H i study of the dwarf Local Group galaxy VV124 = UGC4879. A gas-poor dwarf with a stellar disk?},
author={Michele Bellazzini and Giacomo Beccari and Tom Oosterloo and Silvia Regina Galleti and Antonio Sollima and Matteo Correnti and Vincenzo Testa and Lucio Mayer and Michele Cignoni and Filippo Fraternali and S. Gallozzi INAF-OABo and E.S.O.-Garching and NIRA-Dwingeloo and Kapteyn Astr. Inst. Groningen and Iac and INAF-OApd and Inaf-Oar and Itp - Un. Zurich and Institut fur Astronomie Zurich and Dip. Astr. Bologna},
journal={Astronomy and Astrophysics},
year={2010},
volume={527}
}
We present a detailed study of the dwarf galaxy VV124 (UGC4879), recently recognized as a remarkably isolated member of the Local Group. We have obtained deep (r ≃ 26.5) wide-field (23' × 23') g,r photometry of individual stars with the LBC camera at the Large Binocular Telescope under sub-arcsec seeing conditions. The color-magnitude diagram suggests that the stellar content of the galaxy is dominated by an old, metal-poor population, with a significant metallicity spread. A very clean… Expand

#### Figures and Tables from this paper

A very dark stellar system lost in Virgo: kinematics and metallicity of SECCO 1 with MUSE
We present the results of VLT-MUSE (Very Large Telescope-Multi Unit Spectroscopic Explorer) integral field spectroscopy of SECCO 1, a faint, star-forming stellar system recently discovered as theExpand
The extended structure of the dwarf irregular galaxies Sextans A and Sextans B. Signatures of tidal distortion in the outskirts of the Local Group
We present a detailed study of the stellar and H i structure of the dwarf irregular galaxies Sextans A and Sextans B, members of the NGC 3109 association. We use newly obtained deep (r ≃ 26.5) andExpand
The StEllar Counterparts of COmpact high velocity clouds (SECCO) survey - I. Photos of ghosts
We present an imaging survey aimed at searching for the stellar counterparts of recently discovered ultra-compact high-velocity HI clouds (UCHVC). Adams et al. (2013) proposed these clouds to beExpand
The extended structure of the dwarf irregular galaxy Sagittarius
We present a detailed study of the stellar and H i structure of the dwarf irregular galaxy Sagittarius. We use new deep and wide field photometry to trace the surface brightness profile of the galaxyExpand
HST Resolves Stars in a Tiny Body Falling on the Dwarf Galaxy DDO 68
We present new Hubble Space Telescope (HST) imaging of a stream-like system associated with the dwarf galaxy DDO 68, located in the Lynx-Cancer Void at a distance of D$\sim$12.65 Mpc from us. TheExpand
The Arecibo Galaxy Environment Survey – VIII. Discovery of an isolated dwarf galaxy in the Local Volume
• Physics
• 2014
The Arecibo Galaxy Environment Survey (AGES) has detected a nearby HI source at a heliocentric velocity of +363 km/s . The object was detected through its neutral hydrogen emission and has an obviousExpand
Variable Stars and Stellar Populations in Andromeda XXVII: IV. An off-centered, disrupted galaxy
We present B and V time series photometry of the M31 satellite galaxy Andromeda XXVII (And XXVII) that we observed with the Large Binocular Cameras of the Large Binocular Telescope. In the field ofExpand
Chemical abundances in the nucleus of the Sagittarius dwarf spheroidal galaxy
• Physics
• 2017
We present Iron, Magnesium, Calcium, and Titanium abundances for 235 stars in the central region of the Sagittarius dwarf spheroidal galaxy (within 9.0 arcmin ~70 pc from the center) fromExpand
The ISLAnds Project. III. Variable Stars in Six Andromeda Dwarf Spheroidal Galaxies
We present a census of variable stars in six M31 dwarf spheroidal satellites observed with the Hubble Space Telescope. We detect 870 RR Lyrae (RRL) stars in the fields of And I (296), II (251), IIIExpand
NIHAO XV: the environmental impact of the host galaxy on galactic satellite and field dwarf galaxies
• Physics
• Monthly Notices of the Royal Astronomical Society
• 2018
We study the impact of the host on dwarf galaxy properties using four new Milky Way-like, ultra high-resolution simulations, ($N_{\rm part} >10^7$) from the NIHAO project. We split our sample inExpand

#### References

SHOWING 1-10 OF 94 REFERENCES
The Andromeda project - I. Deep HST-WFPC2 V, I photometry of 16 fields toward the disk and the halo of the M 31 galaxy. Probing the stellar content and metallicity distribution
We have obtained HST-WFPC2 F555W and F814W photometry for 16 fields in the vicinity of the luminous nearby spiral galaxy M 31, sampling the stellar content of the disk and the halo at differentExpand
The Hα Galaxy Survey ⋆ I. The galaxy sample, Hα narrow-band observations and star formation parameters for 334 galaxies
We discuss the selection and observations of a large sample of nearby galaxies, which we are using to quantify the star formation activity in the local Universe. The sample consists of 334 galaxiesExpand
Investigation of the new Local Group galaxy VV 124
• Physics
• 2010
We present the results of our stellar photometry and spectroscopy for the new Local Group galaxy VV124 (UGC4879) obtainedwith the 6-m BTAtelescope. The presence of a fewbright supergiants in theExpand
On the Remote Galactic Globular Cluster NGC 2419
We present a new, deep (V ~ 26) study of the Galactic globular cluster NGC 2419 based on B, V, I time-series CCD photometry over about 10 years and extending beyond the cluster published tidalExpand
H I in Local Group Dwarf Galaxies and Stripping by the Galactic Halo
• Physics
• 2009
We examine the H I content and environment of all of the Local Group dwarf galaxies (M tot < 1010 M ☉), including the numerous newly discovered satellites of the Milky Way and M31. All of the newExpand
The colour of galaxies in distant groups
We present new optical and near-infrared imaging for a sample of 98 spectroscopicallyselected galaxy groups at 0.25 < z < 0.55, most of which have velocity dispersions � < 500 km/s. We useExpand
Deep Hubble Space Telescope WFPC2 Photometry of NGC 288. I. Binary Systems and Blue Stragglers
• Physics
• 2002
We present the first results of a deep WFPC2 photometric survey of the loose galactic globular cluster NGC 288. The fraction of binary systems is estimated from the color distribution of objects nearExpand
The red giant branch tip and bump of the Leo II dwarf spheroidal galaxy
• Physics
• 2005
We present V and I photometry of a 9.4 x 9.4 arcmin 2 field centred on the dwarf spheroidal galaxy Leo II. The tip of the red giant branch (TRGB) is identified at I TRGB = 17.83 ± 0.03 and adoptingExpand
A New Local Group Galaxy in Cetus
• Physics
• 1999
We report the discovery of a previously uncataloged Local Group galaxy in the constellation Cetus. Faintly visible on UKST survey plates, it has a smooth, diffuse appearance and appears to be a dwarfExpand
Andromeda XVII: A New Low-Luminosity Satellite of M31
• Physics
• 2008
We report the discovery of a new dwarf spheroidal galaxy near M31 on the basis of INT/WFC imaging. The system, Andromeda XVII (And XVII), is located at a projected radius of 44 kpc from M31, has aExpand