The nearby universe

Studying the Nearby Universe with

I highlight results from Chandra observations of nearby galaxies , including the Milky Way. These observations have offered insights into old mysteries and indications of new high energy astrophysical phenomena and processes that are yet to be understood.

Studying the Nearby Universe with Chandra

I highlight results from Chandra observations of nearby galaxies, including the Milky Way. These observations have offered insights into old mysteries and indications of new high energy astrophysical phenomena and processes that are yet to be understood.

Tidal dwarf galaxies in the nearby Universe

We present a statistical observational study of the tidal dwarf (TD) population in the nearby Universe by exploiting a large, homogeneous catalogue of galaxy mergers compiled from the Sloan Digital Sky Survey. 95% of TD-producing mergers involve two spiral progenitors (typically both in the blue cloud), while most remaining systems have at least one spiral progenitor. The fraction of TD-produci...

The Environmental Dependence of Star Formation in the Nearby Universe

We have investigated how the incidence of star-forming galaxies varies with the environment using a volume-limited sample of nearby galaxy spectra extracted from the 2dF Galaxy Redshift Survey. The environment is characterized by the local number density of galaxies, corrected for sample incompleteness and border effects. Using the equivalent widths of [O II]λ3727 and Hδ we discriminate the sta...

Faint Structures in Low Density Regions of the Nearby Universe