Solo dwarfs II: The stellar structure of isolated Local Group dwarf galaxies
arXiv:2101.03189 · doi:10.1093/mnras/stab002
Abstract
The Solo (Solitary Local) Dwarf Galaxy survey is a volume limited, wide-field g- and i- band survey of all known nearby (<3 Mpc) and isolated (>300 kpc from the Milky Way or M31) dwarf galaxies. This set of 44 dwarfs are homogeneously analysed for quantitative comparisons to the satellite dwarf populations of the Milky Way and M31. In this paper, an analysis of the 12 closest Solo dwarf galaxies accessible from the northern hemisphere is presented, including derivation of their distances, spatial distributions, morphology, and extended structures, including their inner integrated light properties and their outer resolved star distributions. All 12 galaxies are found to be reasonably well described by two-dimensional Sersic functions, although UGC 4879 in particular shows tentative evidence of two distinct components. No prominent extended stellar substructures, that could be signs of either faint satellites or recent mergers, are identified in the outer regions of any of the systems examined.
25 pages, 18 figures, Accepted to MNRAS
References in corpus (35)
- The Dartmouth Stellar Evolution Database
- Updated Nearby Galaxy Catalog
- The Star Formation Histories of Local Group Dwarf Galaxies I. Hubble Space Telescope / Wide Field Planetary Camera 2 Observations
- A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33
- An Ultraviolet-to-Radio Broadband Spectral Atlas of Nearby Galaxies
- Non-linear Least Squares Fitting in IDL with MPFIT
- Leo A: A Late-Blooming Survivor of the Epoch of Reionization in the Local Group
- The PAndAS view of the Andromeda satellite system - II. Detailed properties of 23 M31 dwarf spheroidal galaxies
- A trio of new Local Group galaxies with extreme properties
- The Dearth of Neutral Hydrogen in Galactic Dwarf Spheroidal Galaxies
- LITTLE THINGS in 3D: robust determination of the circular velocity of dwarf irregular galaxies
- Satellite Dwarf Galaxies in a Hierarchical Universe: The Prevalence of Dwarf-Dwarf Major Mergers
- The Canada-France Imaging Survey: First results from the u-band component
- The structural properties and star formation history of Leo T from deep LBT photometry
- The Araucaria Project: the Local Group Galaxy WLM--Distance and metallicity from quantitative spectroscopy of blue Supergiants
- The Araucaria Project. VLT spectra of blue supergiants in WLM: classification and first abundances
- Delayed Star Formation in Isolated Dwarf Galaxies: HST Star Formation History of the Aquarius Dwarf Irregular
- Prolate rotation and metallicity gradient in the transforming dwarf galaxy Phoenix
- The stellar content of the isolated transition dwarf galaxy DDO210
- Spectroscopy of the three distant Andromedan satellites Cassiopeia III, Lacerta I, and Perseus I
- The ACS LCID Project: RR Lyrae stars as tracers of old population gradients in the isolated dwarf spheroidal galaxy Tucana
- Stellar Content and Recent Star Formation History of the Local Group Dwarf Irregular Galaxy IC1613
- The Dynamics and Metallicity Distribution of the Distant Dwarf Galaxy VV124
- THE NEXT GENERATION VIRGO CLUSTER SURVEY. XIV. Shell feature early-type dwarf galaxies in the Virgo cluster
- Solo dwarfs III: Exploring the orbital origins of isolated Local Group galaxies with Gaia Data Release 2
- Multiple dynamical components in Local Group dwarf spheroidals
- The Star Formation History of Isolated Dwarf UGC4879
- The Globular Cluster System of NGC 6822
- DDO216-A1: a central globular cluster in a low-luminosity transition type galaxy
- Dwarf Irregular Galaxy Leo A. Suprime-Cam Wide-Field Stellar Photometry
- Kinematic and metallicity properties od the Aquarius dwarf galaxy from FORS2 MXU spectroscopy
- Population Effects on the Metallicity Distribution Function Derived From the Red Giant Branch
- A MegaCam Survey of Outer Halo Satellites. VII. A Single Sérsic Index v/s Effective Radius Relation for Milky Way Outer Halo Satellites
- The extended structure of the dwarf irregular galaxy Sagittarius
- VV124 (UGC4879): A new transitional dwarf galaxy in the periphery of the Local Group