A Faint New Milky Way Satellite in Bootes

@article{Belokurov2006AFN,
  title={A Faint New Milky Way Satellite in Bootes},
  author={Vasily A Belokurov and Db B. Zucker and N. Wyn Evans and Mark I. Wilkinson and Michael Irwin and Simon T. Hodgkin and Daniel M. Bramich and Jonathan M. Irwin and Gerry Gilmore and Beth Willman and Simon Vidrih and Heidi Jo Newberg and R. F. G. Wyse and Michael Fellhauer and Paul C. Hewett and Nathan Cole and Eric F. Bell and Timothy C. Beers and Constance M. Rockosi and Brian Yanny and E. K. Grebel and Donald P. Schneider and Robert H. Lupton and John C. Barentine and Howard J. Brewington and Jonathan Brinkmann and Michael Harvanek and Scott J. Kleinman and Jurek Krzesinski and Daniel C. Long and Atsuko Nitta and J. Allyn Smith and Stephanie A. Snedden},
  journal={The Astrophysical Journal Letters},
  year={2006},
  volume={647},
  pages={L111 - L114}
}
We announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of ~60 kpc. It was found in a systematic search for stellar overdensities in the north Galactic cap using Sloan Digital Sky Survey Data Release 5. The color-magnitude diagram shows a well-defined turnoff, red giant branch, and extended horizontal branch. Its absolute magnitude is MV ~ -5.8 mag, which makes it one of the faintest galaxies known. The half-light radius is ~220 pc. The… 

Bootes II: A Retrospective

During the course of a systematic search for low surface brightness Milky Way satellite galaxies we have discovered a previously unidentified stellar overdensity in the Sloan Digital Sky Survey. This

A Pair of Boötes: A New Milky Way Satellite

As part of preparations for a southern sky search for faint Milky Way dwarf galaxy satellites, we report the discovery of a stellar overdensity in the Sloan Digital Sky Survey Data Release 5, lying

Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way

We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude

Leo V: A Companion of a Companion of the Milky Way Galaxy?

We report the discovery of a new Milky Way satellite in the constellation Leo, identified in data from the Sloan Digital Sky Survey. It lies at a distance of ~180 kpc, and is separated by ≲3° from

A NEW MILKY WAY SATELLITE DISCOVERED IN THE SUBARU/HYPER SUPRIME-CAM SURVEY

We report the discovery of a new ultra-faint dwarf satellite companion of the Milky Way (MW) based on the early survey data from the Hyper Suprime-Cam Subaru Strategic Program. This new satellite,

Leo IV and V - A possible dwarf galaxy pair?

The last few years have seen the discovery of many faint and ultra-faint dwarf spheroidal galaxies around the Milky Way. Among these is a pair of satellites called Leo IV and Leo V. This pair is

Discs of satellites: the new dwarf spheroidals

The spatial distributions of the most recently discovered ultra-faint dwarf satellites around the Milky Way and the Andromeda galaxy are compared to the previously reported discs-ofsatellites (DoS)

A Curious Milky Way Satellite in Ursa Major

In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging.

Variable Stars in the Newly Discovered Milky Way Satellite in Bootes

We present V, I light curves for 12 variable stars identified in the newly discovered satellite of the Milky Way in the Bootes constellation. Our sample includes 11 RR Lyrae stars (five first

A Keck/DEIMOS spectroscopic survey of faint Galactic satellites: searching for the least massive dwarf galaxies

We present the results of a spectroscopic survey of the recently discovered faint Milky Way satellites Bootes, Ursa Major I, Ursa Major II and Willman 1 (Will). Using the DEep Imaging Multi-Object
...

References

SHOWING 1-10 OF 26 REFERENCES

A New Milky Way Dwarf Satellite in Canes Venatici

In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using

A New Milky Way Companion: Unusual Globular Cluster or Extreme Dwarf Satellite?

We report the discovery of SDSS J1049+5103, an overdensity of resolved blue stars at (α2000, δ2000) = (162.°343, 51.°051). This object appears to be an old, metal-poor stellar system at a distance of

The Field of Streams: Sagittarius and Its Siblings

We use Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) u, g, r, i, z photometry to study Milky Way halo substructure in the area around the north Galactic cap. A simple color cut (g - r < 0.4)

Complexity on Small Scales: The Metallicity Distribution of the Carina Dwarf Spheroidal Galaxy

The Carina dwarf spheroidal galaxy is the only galaxy of this type that shows clearly episodic star formation separated by long pauses. Here we present metallicities for 437 radial velocity members

Ursa Major: A Missing Low-Mass CDM Halo?

The recently discovered Ursa Major dwarf spheroidal (dSph) galaxy candidate is about 5-8 times less luminous than the faintest previously known dSphs, And IX, Draco, and Ursa Minor. In this Letter,

Exploring Halo Substructure with Giant Stars. IV. The Extended Structure of the Ursa Minor Dwarf Spheroidal Galaxy

We present a large-area photometric survey of the Ursa Minor dwarf spheroidal galaxy and its environs. This survey is intended to trace the distribution of stars outside the nominal tidal radius of

The Sloan Digital Sky Survey: Technical Summary

The Sloan Digital Sky Survey (SDSS) will provide the data to support detailed investigations of the distribution of luminous and nonluminous matter in the universe: a photometrically and

Mass Segregation in the Globular Cluster Palomar 5 and its Tidal Tails

We present the stellar main-sequence luminosity function (LF) of the disrupted, low-mass, low-concentration globular cluster Palomar 5 and its well-defined tidal tails, which emanate from the cluster

Abundance Patterns in the Draco, Sextans, and Ursa Minor Dwarf Spheroidal Galaxies

The Keck I telescope and the High Resolution Echelle Spectrometer (HIRES) have been used to obtain spectra for red giant stars belonging to the Draco, Sextans, and Ursa Minor dwarf spheroidal (dSph)

The Galaxies of the Local Group

Preface 1. Introduction 2. Local group membership 3. The Andromeda galaxy (M31) 4. The Milky Way system 5. The Triangulum galaxy (M33) 6. The Large Magellanic Cloud 7. The Small Magellanic Cloud 8.