Dwarf irregular galaxy UGC 8091 (wide-field view)

Esahubble_heic2313b_1024

esahubble_heic2313b December 20th, 2023

Credit: ESA/Hubble, NASA Y. Choi (NOIRLab), K. Gilbert (Space Telescope Science Institute), J. Dalcanton (Flatiron Institute and University of Washington

For the end of the year and the holiday season Hubble has captured the festive bundle of lights known as UGC 8091. UGC 8091, also known as GR 8, lies around seven million light-years from Earth in the constellation Virgo. It is a dwarf irregular galaxy: a comparatively small, low-mass galaxy without a distinct or uniform shape. The filters used in this image date from 2006 up to 2021, and were taken by two of Hubble’s most advanced instruments: the Wide Field Camera 3 and the Advanced Camera for Surveys. An astonishing twelve filters combine to produce this image, with light from the mid-ultraviolet right through to the red end of the visible spectrum contributing. The blossoming patches of red represent light emitted by excited hydrogen molecules in hot, energetic stars that have formed in recent starbursts. The other glittering lights on show are a mix of older stars. [Image description: A collection of stars and galaxies fill the scene against a dark background. The image is dominated by a dense collection of stars that make up the irregular galaxy UGC 8091. The stars span a variety of colours, including blue and orange, with patches of blue occupying the central part of the galaxy. There are also visible circular regions of red/pink gas within the galaxy.]

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/heic2313b/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
UGC 8091
Esahubble_heic2313b_128
 

Position Details

Position (ICRS)
RA = 12h 58m 42.2s
DEC = 14° 12’ 49.9”
Orientation
North is 64.8° CCW
Field of View
3.1 x 2.5 arcminutes
Constellation
Virgo

Color Mapping

  Telescope Spectral Band Wavelength
Purple Hubble (WFC3) Ultraviolet (ISM feature) 218.0 nm
Purple Hubble (WFC3) Ultraviolet (UV) 225.0 nm
Purple Hubble (WFC3) Ultraviolet (UV) 275.0 nm
Blue Hubble (WFC3) Optical (U) 336.0 nm
Blue Hubble (WFC3) Optical (O II) 373.0 nm
Blue Hubble (WFC3) Optical (Hß) 487.0 nm
Cyan Hubble (ACS) Optical (g) 475.0 nm
Cyan Hubble (WFC3) Optical (O III) 502.0 nm
Green Hubble (ACS) Optical (g) 475.0 nm
Orange Hubble (ACS) Optical (I) 814.0 nm
Red Hubble (WFC3) Optical (H-alpha) 656.0 nm
Red Hubble (WFC3) Optical (H-alpha + N II) 657.0 nm
Red Hubble (WFC3) Infrared (YJ) 1.1 µm
Red Hubble (WFC3) Infrared (H) 1.6 µm
Spectrum_base
Purple
Purple
Purple
Blue
Blue
Blue
Cyan
Cyan
Green
Orange
Red
Red
Red
Red
Esahubble_heic2313b_1280
×
ID
heic2313b
Subject Category
Subject Name
UGC 8091
Credits
ESA/Hubble, NASA Y. Choi (NOIRLab), K. Gilbert (Space Telescope Science Institute), J. Dalcanton (Flatiron Institute and University of Washington
Release Date
2023-12-20T16:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/heic2313b/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3, WFC3, WFC3, ACS, WFC3, ACS, ACS, WFC3, WFC3, WFC3, WFC3
Color Assignment
Purple, Purple, Purple, Blue, Blue, Blue, Cyan, Cyan, Green, Orange, Red, Red, Red, Red
Band
Ultraviolet, Ultraviolet, Ultraviolet, Optical, Optical, Optical, Optical, Optical, Optical, Optical, Optical, Optical, Infrared, Infrared
Bandpass
ISM feature, UV, UV, U, O II, Hß, g, O III, g, I, H-alpha, H-alpha + N II, YJ, H
Central Wavelength
218, 225, 275, 336, 373, 487, 475, 502, 475, 814, 656, 657, 1100, 1600
Start Time
Integration Time
Dataset ID
None, None, None, None, None, None, None, None, None, None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
194.675973054774, 14.213856353146488
Reference Dimension
4716.0, 3782.0
Reference Pixel
2358.0, 1891.0
Scale
-1.107978928671473e-05, 1.107978928671473e-05
Rotation
64.779999999999987
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
heic2313b
Metadata Date
2023-12-08T14:00:58+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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