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Arp 274, A Triplet of Galaxies in Virgo (Hubble Heritage), 





    
        

            Ruben Barbosa

Arp 274, A Triplet of Galaxies in Virgo (Hubble Heritage)

Technical card

Imaging telescope or lens:Hubble Space Telescope

Software:Maxim DL, Gimp

Resolution: 2140x1304

Frames:
B-band F450W: 1x4400"
H-alpha F656N: 1x4400"
I-band F814W: 1x4400"
V-band F555W: 1x4400"

Integration: 4.9 hours

Astrometry.net job: 1643252

Description

* Acquisition: NASA/ESA/Hubble Heritage.
* Processing: Ruben Barbosa.

Arp 274 (also known as NGC 5679) is a triplet of galaxies located 400 million light years away, in the direction of the constellation Virgo.

The image reveals 3 galaxies:

• On the left, there is a NGC 5679C spiral with reddish hues from hydrogen and blue tones that indicate the formation of hot young stars. So, this galaxy is in the production phase of many new stars;

• In the center we have NGC 5679, an elegant barred spiral. It displays a bright yellowish core composed essentially of old stars. Measurements of the redshift reveal a higher radial velocity than the partners, meaning that it is in a plane farther away, estimated to be 65 million light-years;

• On the right is NGC 5679A, a compact galaxy with high star formation activity.
Over this last galaxy two extremely bright stars are visible. Their brightness is due to the fact that they belong to our galaxy.

When two galaxies collide, their stars usually do not. The explanation lies in the enormous distance between them. However, during a collision, the gas and dust structure may be affected. Initially, group 5679 was thought to be interacting gravitationally but this photography reveals no characteristic distortions of these interactions in the arms of the central galaxy.

Comments

Author

RRBBarbosa
Ruben Barbosa
License: None (All rights reserved)
3264
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Histogram

Arp 274, A Triplet of Galaxies in Virgo (Hubble Heritage), 





    
        

            Ruben Barbosa

In these public groups

Hubble Legacy Archive