How far away is the Rho Ophiuchi cloud complex from Earth?
The Rho Ophiuchi cloud complex is approximately 460 light years from Earth. That estimated distance makes it one of the closest star-forming regions to the Solar System.
Questions about Rho Ophiuchi cloud complex
Short answers, pulled from the story.
How many young stars have been found in the Rho Ophiuchi cloud complex?
Astronomers have detected 425 infrared sources near the L1688 cloud, all presumed to be young stellar objects. These include 16 protostars, 123 T Tauri stars with dense circumstellar disks, and 77 weaker T Tauri stars with thinner disks.
What is the total mass of material in the Rho Ophiuchi cloud complex?
The Rho Ophiuchi cloud complex contains roughly 3,000 times the mass of the Sun in gas and dust. More than half of that mass is concentrated in the L1688 cloud, which is the most active star-forming region in the complex.
What did the James Webb Space Telescope photograph in the Rho Ophiuchi cloud complex?
In 2023, NASA, ESA, and CSA released a James Webb Space Telescope image of the Rho Ophiuchi cloud complex to mark the telescope's first anniversary. The image covers a field of just 6.4 arc-minutes and shows young Sun-sized stars at the centers of circumstellar disks, representing planetary systems in the process of forming.
What is the significance of Rho Oph J162349.8-242601?
Rho Oph J162349.8-242601 was the first brown dwarf ever identified inside a star-forming region. Its discovery in the Rho Ophiuchi cloud complex provided direct evidence that brown dwarfs can form through the same cloud-collapse processes that produce ordinary stars.
What are the temperatures inside the Rho Ophiuchi cloud complex?
Temperatures in the Rho Ophiuchi cloud complex range from 13 to 22 Kelvin. These extremely cold conditions are characteristic of dense interstellar clouds where new stars can form.