English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We discuss the approach of searching low mass dwarf galaxies,$\lesssim10^6\textrm{ M}_{\odot}$, in the general field, using integrated lightsurveys. By exploring the limiting surface brightness-spatial resolution($\mu_{\textrm{eff,lim}}-\theta$) parameter space, we suggest that faint fielddwarfs in the Local Volume, between $3$ and $10 \textrm{ Mpc}$, are expected tobe detected effectively and in large numbers using integrated light photometricsurveys, complementary to the classical star counts method. We use a sample ofLocal Group dwarf galaxies to construct relations between their photometric andstructural parameters, $\textrm{M}_{*}$-$\mu_{\textrm{eff,V}}$ and$\textrm{M}_{*}$-$\textrm{R}_{\textrm{eff}}$. We use these relations, alongwith assumed functional forms for the halo mass function and the stellarmass-halo mass relation, to calculate the lowest detectable stellar masses inthe Local Volume and the expected number of galaxies as a function of thelimiting surface brightness and spatial resolution. The number of detectedgalaxies depends mostly on the limiting surface brightness for distances$>3\textrm{ Mpc}$ while spatial resolution starts to play a role at distances$>8\textrm{ Mpc}$. Surveys with $\mu_{\textrm{eff,lim}}\sim30\textrm{ magarcsec}^{-2}$ should be able to detect galaxies with stellar masses down to$\sim10^4 \textrm{ M}_{\odot}$ in the Local Volume. Depending on the assumedstellar mass-halo mass relation, the expected number of galaxies between $3$and $10\textrm{ Mpc}$ is $0.04-0.35\textrm{ deg}^{-2}$, assuming a limitingsurface brightness of $\sim29-30\textrm{ mag arcsec}^{-2}$ and a spatialresolution $<4''$. We currently look for field dwarf galaxies by performing ablank wide-field survey with the Dragonfly Telephoto Array, optimized for thedetection of ultra-low surface brightness structures.

Hunting Faint Dwarf Galaxies in the Field Using Integrated Light Surveys