A new Hubble image highlights striking swirling dust lanes and glittering globular clusters in oddball galaxy NGC 7049.
The NASA/ESA's Hubble Space Telescope has captured this image of NGC 7049, a mysterious looking galaxy on the border between spiral and elliptical galaxies. NGC 7049 is found in the constellation of Indus, and is the brightest of a cluster of galaxies, a so-called Brightest Cluster Galaxy (BCG). Typical BCGs are some of the oldest and most massive galaxies. They provide excellent opportunities for astronomers to study the elusive globular clusters lurking within.
The globular clusters in NGC 7049 are seen as the sprinkling of small faint points of light in the galaxy’s halo. The halo – the ghostly region of diffuse light surrounding the galaxy – is composed of myriads of individual stars and provides a luminous background to the remarkable swirling ring of dust lanes surrounding NGC 7049's core. Globular clusters are very dense and compact groupings of a few hundreds of thousands of stars bound together by gravity. They contain some of the first stars to be produced in a galaxy. NGC 7049 has far fewer such clusters than other similar giant galaxies in very big, rich groups. This indicates to astronomers how the surrounding environment influenced the formation of galaxy halos in the early Universe.
Panning over NGC 7049, a mysterious looking galaxy with globular clusters dotted throughout its halo. Credit: ESA/Hubble (M. Kornmesser&L. L. Christensen).
The image was taken by the Advanced Camera for Surveys on Hubble, which is optimised to hunt for galaxies and galaxy clusters in the remote and ancient Universe, at a time when our cosmos was very young.
The constellation of Indus, or the Indian, is one of the least conspicuous in the southern sky. It was named in the 16th century by Dutch astronomer Petrus Plancius from observations made by Dutch navigator Pieter Dirkszoon Keyser and Dutch explorer Frederick de Houtman.
The Hubble Space Telescope is a project of international cooperation between ESA and NASA.
CLICK IMAGE FOR LARGE SIZE. A wide-field image of the region around NGC 7049 constructed from the images in the Digitized Sky Survey. The field-of-view is approximately 4.1 degrees x 3.1 degrees. Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Pseudoscience Creeping Into Your Conference? A Case In GMOs And Glyphosate
- My Thoughts On The LIGO-VIRGO Result
- Henri Poincaré Predicted The Existence Of Gravitational Waves As Early As June 5, 1905
- Are Dark Matter Scientists About To Prove Its Existence?
- Gravitational Waves? Watch the LIGO press conference at 10:30 Eastern.
- 36 Million Americans Cook In The Nude
- Beyond Diamonds And Gems: The World's Rarest Minerals
- "Hi Xi Lee,the issue here is to not confuse what is the rate of spurious signals with what is the..."
- "Dear Abraham,the probability is very small for any given wave train, of course. But what the LIGO..."
- "About Poincaré and Einstein I wrote recently a little article in German language: http://www.soso..."
- "PSI? LOL, you’re killing me. I find it ironic that a person with the moniker PhotoDady doesn’t..."
- "Marie François Sadi Carnot (1837-1894, President of France from 1887 until his murder in 1894)..."
- Fluorine: The Element From Hell
- Beard Microbiology: Grubby Hipsters May Be On To Something
- Water Tops the List of Health Concerns for Competitive Eaters
- Natural Flavors Are More Radioactive Than Artificial Ones.
- Bariatric Surgery Beneficial Even for Older People
- Opiates No Better at Easing Knee Osteoarthritis Pain
- AAAS 2016 -- Food security: Building resilience into the world's food system
- New appreciation for human microbiome leads to greater understanding of human health
- Exeter's world-leading climate change research showcased in prestigious science event
- Speech disorder called apraxia can progress to neurodegenerative disease
- Market integration could help offset climate-related food insecurity