Spiral galaxies that are seen edge-on to the line of sight provide
special opportunities to learn about the materials and structures that
extend out from the galaxy midplanes. This is because those components
are seen in projection against the very dark background, instead of
the very bright stellar disks. Observations of edge-on galaxies
therefore reveal large-scale features that would otherwise remain hidden,
like warps and tidal streams, as well as the distributions and ages of
stellar populations. All of these yield vital clues to these galaxies'
A Study of Edge-On Galaxies with HST/ACS. II. Vertical Distribution of the Resolved Stellar Population .pdf
Clues to Nuclear Star Cluster Formation from Edge-on Spirals .pdf
High-Latitude H I in the Low Surface
Brightness Galaxy UGC 7321 .pdf
A Search for Faint, Diffuse Halo Emission in Edge-On Galaxies with Spitzer/IRAC
Infrared Array Camera on the Spitzer Space Telescope
WIYN, The Wisconsin-Indiana-Yale-NOAO Telescope
NRAO, The National Radio Astronomy Observatory
The disk of edge-on spiral galaxy NGC 891 as observed by
CfA Fellow Anil Seth with the HST at visible wavelengths.
With high-resolution HST imaging it becomes possible to
determine the structure of NGC 0891 using counts of individual stars.
The "Integral Sign Galaxy" (a.k.a. UGC3697) exhibits an unusually
pronounced warp in both its stellar and gaseous disks. In this image,
radio wavelength emission from the neutral atomic hydrogen gas (colored
blue for display purposes) is overplotted on an optical image of the
galaxy. The radio data were obtained with the Very Large Array of the
National Radio Astronomy Observatory and the optical images were taken
with the WIYN Telescope on Kitt Peak. The unusual appearance of UGC3697
has probably been triggered by an interaction with a small companion.