Pinwheel firework

Eso_potw2243a_1024

eso_potw2243a October 24th, 2022

Credit: ESO/PHANGS

In this picture of the week we can see the well-defined arms of the spiral galaxy NGC 4254, also known as the Coma Pinwheel or Messier 99. It’s called a grand design spiral galaxy because of its distinctive pinwheel shape with prominent arms. Since Charles Messier first observed it in the 18th century, modern technology has allowed us to observe galaxies like this in significantly greater detail. This image is a composite of data taken with ESO’s Very Large Telescope (VLT) and the Atacama Large Millimeter/submillimeter Array (ALMA), co-owned by ESO. The VLT data, shown in blue and purple tones, was captured with the Multi-Unit Spectroscopic Explorer (MUSE) instrument, mapping the distribution of stars. The ALMA data –– shown here by the red and orange regions –– originates from cold clouds of gas which can eventually collapse into stars. Comparing these two datasets allows for a better understanding of how stars form. This image was taken as part of the Physics at High Angular resolution in Nearby GalaxieS (PHANGS) survey, which produces high-resolution images of nearby galaxies across all wavelengths of light. This will allow astronomers to learn more about the diverse range of galactic environments found in our Universe.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/potw2243a/

Curator: European Southern Observatory, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 4254
Subject - Local Universe
Galaxy > Type > Spiral
Eso_potw2243a_128
 

Position Details

Position (ICRS)
RA = 12h 18m 50.8s
DEC = 14° 25’ 15.8”
Orientation
North is 89.9° CCW
Field of View
3.1 x 2.7 arcminutes
Constellation
Coma Berenices

Color Mapping

  Telescope Spectral Band Wavelength
Blue VLT (MUSE) Optical (G) 475.0 nm
Green VLT (MUSE) Optical (R) 625.0 nm
Red VLT (MUSE) Optical (I) 775.0 nm
Orange ALMA (Band 6) Millimeter (CO [2–1]) 1.2 mm
Spectrum_ir1
Blue
Green
Red
Orange
Eso_potw2243a_1280
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ID
potw2243a
Subject Category
C.5.1.1  
Subject Name
NGC 4254
Credits
ESO/PHANGS
Release Date
2022-10-24T06:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/potw2243a/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope, Atacama Large Millimeter/submillimeter Array
Instrument
MUSE, MUSE, MUSE, Band 6
Color Assignment
Blue, Green, Red, Orange
Band
Optical, Optical, Optical, Millimeter
Bandpass
G, R, I, CO [2–1]
Central Wavelength
475, 625, 775, 1200000
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
184.711470578, 14.4210428091
Reference Dimension
932.0, 800.0
Reference Pixel
466.0, 400.0
Scale
-5.55214959402e-05, 5.55214959402e-05
Rotation
89.920000000000044
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
https://www.eso.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
potw2243a
Metadata Date
2021-06-10T14:34:32+02:00
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.