Hubble Spies a Tenuous Diffuse Galaxy

Esahubble_potw2217a_1024

esahubble_potw2217a April 25th, 2022

Credit: ESA/Hubble & NASA, R. van der BurgAcknowledgement: L. Shatz

The ultra-diffuse galaxy GAMA 526784 appears as a tenuous patch of light in this image from the NASA/ESA Hubble Space Telescope. This wispy object resides in the constellation Hydra, roughly four billion light-years from Earth. Ultra-diffuse galaxies such as GAMA 526784 have a number of peculiarities. For example, their dark matter content can be either extremely low or extremely high — ultra-diffuse galaxies have been observed with an almost complete lack of dark matter, whereas others consist of almost nothing but dark matter. Another oddity of this class of galaxies is their anomalous abundance of bright globular clusters, something not observed in other types of galaxies. Hubble captured GAMA 526784 with the Advanced Camera for Surveys (ACS), which was installed in 2002 by astronauts during Hubble Servicing Mission 3B. Since then, the instrument has played a pivotal role in some of Hubble’s most impressive scientific results, including capturing the Hubble Ultra Deep Field. The ACS has also photographed Pluto in advance of the New Horizon mission, observed gargantuan gravitational lenses and found fully formed galaxies in the early Universe. This image comes from a set of Hubble observations designed to shed light on the properties of ultra-diffuse galaxies. Hubble’s keen vision allowed astronomers to study GAMA 526784 in high resolution at ultraviolet wavelengths, helping to gauge the sizes and ages of the compact star-forming regions studding the galaxy.

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/potw2217a/

Curator: ESA/Hubble, Baltimore, MD, United States

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Esahubble_potw2217a_128
 

Position Details

Position (ICRS)
RA = 8h 57m 9.2s
DEC = 0° 58’ 14.5”
Orientation
North is 104.0° CW
Field of View
2.4 x 1.4 arcminutes
Constellation
Hydra

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (ACS) Optical (I) 814.0 nm
Green Hubble (ACS) Optical (I) 814.0 nm
Green Hubble (ACS) Optical (V) 606.0 nm
Blue Hubble (ACS) Optical (V) 606.0 nm
Spectrum_base
Red
Green
Green
Blue
Esahubble_potw2217a_1280
×
ID
potw2217a
Subject Category
Subject Name
Credits
ESA/Hubble & NASA, R. van der BurgAcknowledgement: L. Shatz
Release Date
2022-04-25T06:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/potw2217a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
ACS, ACS, ACS, ACS
Color Assignment
Red, Green, Green, Blue
Band
Optical, Optical, Optical, Optical
Bandpass
I, I, V, V
Central Wavelength
814, 814, 606, 606
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
134.2883109926913, -0.970684273534419
Reference Dimension
2830.0, 1740.0
Reference Pixel
1415.0, 870.0
Scale
-1.3886814607284814e-05, 1.3886814607284814e-05
Rotation
-104.03999999999972
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
https://esahubble.org
Name
Email
Telephone
Address
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr
City
Baltimore
State/Province
MD
Postal Code
21218
Country
United States
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2217a
Metadata Date
2022-04-18T16:39:13+02:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.