The ultra-faint dwarf galaxy Pegasus V

Noirlab_noirlab2214a_1024

noirlab_noirlab2214a June 30th, 2022

Credit: International Gemini Observatory/NOIRLab/NSF/AURAAcknowledgment: Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)

A unique ultra-faint dwarf galaxy has been discovered in the outer fringes of the Andromeda Galaxy thanks to the sharp eyes of an amateur astronomer examining archival data from the US Department of Energy-fabricated Dark Energy Camera on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO) and processed by the Community Science and Data Center (CSDC). Follow-up by professional astronomers using the International Gemini Observatory revealed that the dwarf galaxy — Pegasus V — contains very few heavier elements and is likely to be a fossil of the first galaxies. All three facilities involved are Programs of NSF's NOIRLab.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noirlab2214a/

Curator: NSF's NOIRLab, Tucson, AZ, USA

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
Andromeda Galaxy
Noirlab_noirlab2214a_128
 

Position Details

Position (ICRS)
RA = 23h 18m 27.9s
DEC = 33° 21’ 35.6”
Orientation
North is 89.9° CW
Field of View
5.4 x 2.7 arcminutes
Constellation
Pegasus

Color Mapping

  Telescope Spectral Band Wavelength
Blue Gemini-N (GMOS-N) Optical (g) 475.0 nm
Green Gemini-N (GMOS-N) Optical (g) 475.0 nm
Green Gemini-N (GMOS-N) Optical (r) 630.0 nm
Red Gemini-N (GMOS-N) Optical (r) 630.0 nm
Spectrum_base
Blue
Green
Green
Red
Noirlab_noirlab2214a_1280
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ID
noirlab2214a
Subject Category
Subject Name
Andromeda Galaxy
Credits
International Gemini Observatory/NOIRLab/NSF/AURAAcknowledgment: Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)
Release Date
2022-06-30T08:00:00
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/noirlab2214a/
Type
Observation
Image Quality
Distance Notes
Facility
Gemini North, Gemini North, Gemini North, Gemini North
Instrument
GMOS-N, GMOS-N, GMOS-N, GMOS-N
Color Assignment
Blue, Green, Green, Red
Band
Optical, Optical, Optical, Optical
Bandpass
g, g, r, r
Central Wavelength
475, 475, 630, 630
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
349.616228219, 33.3598909354
Reference Dimension
1992.0, 1015.0
Reference Pixel
996.0, 507.5
Scale
-4.49050510008e-05, 4.49050510008e-05
Rotation
-89.879999999999924
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
NSF's NOIRLab
URL
https://noirlab.edu
Name
Email
Telephone
Address
950 North Cherry Ave.
City
Tucson
State/Province
AZ
Postal Code
85719
Country
USA
Rights
Creative Commons Attribution 4.0 International License
Publisher
NSF's NOIRLab
Publisher ID
noirlab
Resource ID
noirlab2214a
Metadata Date
2022-06-20T01:31:07-07:00
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.