April 19, 2024

Hubble Captures a Marvel of Galactic Morphology

Hubble Space Telescope picture of NGC 1156. Credit: ESA/Hubble & & NASA, R. B. Tully, R. Jansen, R. Windhorst
The galaxy featured in this Hubble Picture of the Week has a shape unlike many of the galaxies familiar to Hubble. It likewise radiates a diffuse radiance, much like an elliptical galaxy and its core of older, redder stars.
A dwarf irregular galaxy, its likewise classified as separated, suggesting no other galaxies are nearby adequate to affect its odd shape and continuing star formation. The extreme energy of freshly formed young stars offers color to the galaxy, versus the red radiance of ionized hydrogen gas, while its center is heavily occupied with older generations of stars.
Hubble has actually caught NGC 1156 previously– this brand-new image features information from a stellar gap-filling program just entitled “Every Known Nearby Galaxy.” Astronomers noticed that just three-quarters of the galaxies within simply over 30 million light-years of Earth had been observed by Hubble in adequate detail to study the makeup of the stars within them. They proposed that in between larger tasks, Hubble might take pictures of the staying quarter– consisting of NGC 1156. Gap-filling programs like this one ensure that the very best usage is made of Hubbles valuable observing time.

By ESA/Hubble
August 21, 2022

The galaxy included in this Hubble Picture of the Week has a shape unlike numerous of the galaxies familiar to Hubble. A dwarf irregular galaxy, its likewise classified as isolated, indicating no other galaxies are nearby sufficient to influence its odd shape and continuing star formation. Astronomers saw that just three-quarters of the galaxies within simply over 30 million light-years of Earth had been observed by Hubble in adequate detail to study the makeup of the stars within them.