They All Shine On! Galaxy Survey Yields Stunning Cosmic View

News
By Elizabeth Howell
( space.com-astronomy )
published

A curious collection of galaxies sparkles like jewels in a gorgeous new image taken by a powerful, Earth-based telescope.

The photo, taken by the European Southern Observatory's VLT Survey Telescope in Chile, is the product of an ongoing survey to better understand how elliptical galaxies form. The telescope features a wide field of view from its vantage point in dark Chilean skies, allowing astronomers to do their work far from light pollution.

One of the galaxies coming under scrutiny is NGC 5018, a milky-white pool of stars visible near the center of the image. NGC 5018 lies in the constellation Virgo, about 94 million light-years away from Earth. (One light-year is the distance that light travels in a year, which is 5.88 trillion miles or 9.5 trillion kilometers.)

This deep image of the area of sky around the elliptical galaxy NGC 5018 offers a spectacular view of the galaxy's tenuous streams of stars and gas. These delicate features are hallmarks of galactic (Image credit: ESO/Spavone et al.)

"[NGC 5018] may at first resemble nothing but a diffuse blob. But on closer inspection, a tenuous stream of stars and gas — a tidal tail — can be seen stretching outwards from this elliptical galaxy," ESO officials wrote in a description of the newly released image.

"Delicate galactic features such as tidal tails and stellar streams are hallmarks of galactic interactions and provide vital clues to the structure and dynamics of galaxies," the officials added.

This annotated view of the surroundings of the elliptical galaxy NGC 5018 shows many of the galaxy's neighbors. The image also reveals a few asteroids that were captured by chance during the deep exposures needed to reveal the delicate streams of stars between the galaxies. (Image credit: ESO/Spavone et al.)

There are some other interesting features found in the picture as well. Lying conveniently along the line of sight is HD 114746, a blue foreground star. You can also see the faint tracks from two asteroids: 2001 TJ21 (110423) across the entire image, and 2000 WU69 (98603) closer to the right.

A paper based on this research, which is called the VST Early-type Galaxy Survey (VEGAS), will appear shortly in The Astrophysical Journal, ESO officials said. The study's principal investigator is Marilena Spavone, a researcher at INAF-Astronomical Observatory of Capodimonte in Naples, Italy.

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Elizabeth Howell
Elizabeth Howell
Staff Writer, Spaceflight

Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for Space.com for 10 years before joining full-time. Elizabeth's reporting includes multiple exclusives with the White House and Office of the Vice-President of the United States, an exclusive conversation with aspiring space tourist (and NSYNC bassist) Lance Bass, speaking several times with the International Space Station, witnessing five human spaceflight launches on two continents, flying parabolic, working inside a spacesuit, and participating in a simulated Mars mission. Her latest book, "Why Am I Taller?", is co-written with astronaut Dave Williams. Elizabeth holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, a Bachelor of Journalism from Canada's Carleton University and a Bachelor of History from Canada's Athabasca University. Elizabeth is also a post-secondary instructor in communications and science at several institutions since 2015; her experience includes developing and teaching an astronomy course at Canada's Algonquin College (with Indigenous content as well) to more than 1,000 students since 2020. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday. Mastodon: https://qoto.org/@howellspace