Stuck in the middle

Esahubble_potw1817a_1024

esahubble_potw1817a April 23rd, 2018

Credit: ESA/Hubble & NASA, A. Fillipenko

  This pretty, cloud-like object may not look much like a galaxy — it lacks the well-defined arms of a spiral galaxy, or the reddish bulge of an elliptical — but it is in fact something known as a lenticular galaxy. Lenticular galaxies sit somewhere between the spiral and elliptical types; they are disc-shaped, like spirals, but they no longer form large numbers of new stars and thus contain only ageing populations of stars, like ellipticals. NGC 2655’s core is extremely luminous, resulting in its additional classification as a Seyfert galaxy: a type of active galaxy with strong and characteristic emission lines. This luminosity is thought to be produced as matter is dragged onto the accretion disc of a supermassive black hole sitting at the centre of NGC 2655. The structure of NGC 2655’s outer disc, on the other hand, appears calmer, but it is oddly-shaped. The complex dynamics of the gas in the galaxy suggest that it may have had a turbulent past, including mergers and interactions with other galaxies. NGC 2655 is located about 80 million light-years from Earth in the constellation of Camelopardalis (The Giraffe). Camelopardalis contains many other interesting deep-sky objects, including the open cluster NGC 1502, the elegant Kemble’s Cascade asterism, and the starburst galaxy NGC 2146.

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/potw1817a/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 2655
Subject - Local Universe
Galaxy > Type > Lenticular
Esahubble_potw1817a_128
 

Position Details

Position (ICRS)
RA = 8h 55m 40.1s
DEC = 78° 13’ 23.4”
Orientation
North is 129.9° CW
Field of View
2.6 x 2.0 arcminutes
Constellation
Camelopardalis

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (WFC3) Optical (I) 814.0 nm
Green Hubble (WFC3) Optical (I) 814.0 nm
Green Hubble (WFC3) Optical (V) 555.0 nm
Blue Hubble (WFC3) Optical (V) 555.0 nm
Spectrum_base
Red
Green
Green
Blue
Esahubble_potw1817a_1280
×
ID
potw1817a
Subject Category
C.5.1.3  
Subject Name
NGC 2655
Credits
ESA/Hubble & NASA, A. Fillipenko
Release Date
2018-04-23T06:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/potw1817a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3
Color Assignment
Red, Green, Green, Blue
Band
Optical, Optical, Optical, Optical
Bandpass
I, I, V, V
Central Wavelength
814, 814, 555, 555
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
133.916994907, 78.2231753314
Reference Dimension
3906.0, 2983.0
Reference Pixel
1953.0, 1491.5
Scale
-1.10185820161e-05, 1.10185820161e-05
Rotation
-129.86000000000013
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
potw1817a
Metadata Date
2017-03-10T18:20:35+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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