Sextans B

Sextans B is an irregular dwarf galaxy, meaning that it is irregularly shaped and smaller than our galaxy, the Milky Way. It lies around 4.5 million light-years from Earth and is located in the constellation Sextans in the southern sky. Captured with the Nicholas U. Mayall 4-meter Telescope, this image of Sextans B features red-colored star-forming regions near the galaxy’s center. Surrounding the galaxy are several bright stars that are located much closer to us in our galaxy, identified by the crisscross patterns created by light interacting with the structure of the telescope, as well as numerous fuzzy-looking background galaxies that appear small because they are much farther away than Sextans B.

Credit:

KPNO/NOIRLab/NSF/AURA
Data obtained and processed by: P. Massey (Lowell Obs.), G. Jacoby, K. Olsen, & C. Smith (AURA/NSF)
Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)

About the Image

Id:noirlab2115a
Type:Observation
Release date:April 28, 2021, 2 p.m.
Related releases:noirlab2115
Size:3482 x 2183 px

About the Object

Name:Sextans B
Constellation:Sextans
Category:Galaxies

Image Formats

Large JPEG
4.1 MB
Screensize JPEG
218.2 KB

Zoomable


Wallpapers

1024x768
303.8 KB
1280x1024
526.5 KB
1600x1200
792.0 KB
1920x1200
911.3 KB
2048x1536
1.4 MB

Coordinates

Position (RA):9 59 59.51
Position (Dec):5° 19' 43.32"
Field of view:15.66 x 9.81 arcminutes
Orientation:North is 0.0° right of vertical


Colors & filters

BandWavelengthTelescope
Optical
U
355 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
B
438 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
OIII
502 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
V
538 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
R
651 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
I
820 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
SII
673 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
H-alpha
657 nmNicholas U. Mayall 4-meter Telescope
Mosaic I