10 papers · 1 filter
A spectroscopic confirmation of the Bootes II dwarf spheroidal
A. Koch, M. I. Wilkinson, J. T. Kleyna +6
We present a new suite of photometric and spectroscopic data for the faint Bootes II dwarf spheroidal galaxy candidate. Our deep photometry, obtained with the INT/WFC, suggests a d…
Leo V: A Companion of a Companion of the Milky Way Galaxy
V. Belokurov, M. G. Walker, N. W. Evans +7
We report the discovery of a new Milky Way dwarf spheroidal galaxy in the constellation of Leo identified in data from the Sloan Digital Sky Survey. Leo V lies at a distance of abo…
The Local Group dwarf Leo T: HI on the brink of star formation
Emma V. Ryan-Weber, Ayesha Begum, Tom Oosterloo +5
We present Giant Meterwave Radio Telescope (GMRT) and Westerbork ynthesis Radio Telescope (WSRT) observations of the recently discovered Local Group dwarf galaxy, Leo T. The peak H…
Stellar populations across the NGC4244 truncated galactic disk
Roelof S. de Jong, A. C. Seth, D. J. Radburn-Smith +12
We use HST/ACS to study the resolved stellar populations of the nearby, nearly edge-on galaxy NGC4244 across its outer disk surface density break. The stellar photometry allows us…
Numerical Color-Magnitude Diagram Analysis of SDSS Data and Application to the New Milky Way satellites
J. T. A. de Jong, H-W. Rix, N. F. Martin +6
We have tested the application to Sloan Digital Sky Survey data of the software package MATCH, which fits color-magnitude diagrams (CMDs) to estimate stellar population parameters…
Spectroscopy of two PN candidates in IC10
A. Y. Kniazev, S. A. Pustilnik, D. B. Zucker
We present the results of the first spectroscopic observations of two planetary nebula (PN) candidates in the Local Group dwarf irregular galaxy IC10. Using several spectral classi…