An explosive phoenix

This image shows a dwarf galaxy in the southern constellation of Phoenix named, for obvious reasons, the Phoenix Dwarf.

The Phoenix Dwarf is unique in that it cannot be classified according to the usual scheme for dwarf galaxies; while its shape would label it as a spheroidal dwarf galaxy — which do not contain enough gas to form new stars — studies have shown the galaxy to have an associated cloud of gas nearby, hinting at recent star formation, and a population of young stars.

The gas cloud does not lie within the galaxy itself, but is still gravitationally bound to it — meaning that it will eventually fall back into the galaxy over time. Since the cloud is close by, it’s likely that the process that flung it outwards it is still ongoing. After studying the shape of the gas cloud, astronomers suspect the most likely cause of the ejection to be supernova explosions within the galaxy.

The data to create this image was selected from the ESO archive as part of the Hidden Treasure competition.

Kilde:

ESO

Om bildet

ID:potw1838a
Type:Observasjon
Publiseringsdato:17. september 2018 06:00
Størrelse:5773 x 3995 px

Om objektet

Navn:Phoenix Dwarf
Type:Local Universe : Galaxy : Size : Dwarf
Constellation:Phoenix
Kategori:Galaxies

Bildeformater

Stor JPEG
9,1 MB
Medium JPEG
317,7 KB

Zoombart


Skrivebordsbakgrunner

1024x768
369,7 KB
1280x1024
622,7 KB
1600x1200
908,5 KB
1920x1200
1,1 MB
2048x1536
1,5 MB

Koordinater

Position (RA):1 51 6.35
Position (Dec):-44° 26' 32.60"
Field of view:12.14 x 8.40 arcminutes
Orientering:Nord er 90.1° til høyre for vertikalen

Farger og filtre

BåndBølgelengdeTeleskop
Optisk
B
440 nmVery Large Telescope
FORS2
Optisk
V
557 nmVery Large Telescope
FORS2

 

Se også