Skip to main content

New massive eccentric brown dwarf discovered!


 

A new discovery has been made in the field of astronomy with the identification of a massive brown dwarf, designated TOI-2490 b. 


This brown dwarf, found by an international team of astronomers, is approximately 74 times the mass of Jupiter and orbits a sun-like star in a highly eccentric path. The details of this discovery were shared in a recent paper published on August 8 on the arXiv pre-print server.


Brown dwarfs are celestial objects that bridge the gap between planets and stars, with masses ranging between 13 and 80 times that of Jupiter. While many brown dwarfs have been detected, those orbiting other stars are relatively rare. 


Led by Beth A. Henderson from the University of Leicester, UK, the team used the Transiting Exoplanet Survey Satellite (TESS) to identify a transit signal in the light curve of TOI-2490, a G-type main sequence star situated around 872.5 light years away. The nature of the signal was confirmed to be a brown dwarf through follow-up photometric observations and radial velocity measurements.


The study reveals that TOI-2490 b is about the size of Jupiter but with a mass of 73.6 Jupiter masses, resulting in a density of 91.6 g/cm³. This brown dwarf orbits its host star every 60.33 days at a distance of approximately 0.31 AU. Its equilibrium temperature is estimated to be 464.2 K.


Notably, TOI-2490 b has an orbital eccentricity of around 0.78, making it the most eccentric brown dwarf known within the "BD desert"—a region where brown dwarfs are scarce around main sequence stars within about 3 AU of their host.


The researchers suggest that TOI-2490 b likely formed with this high eccentricity through stellar formation processes, sharing similar metallicity and age with its parent star. They also observed that the irradiation temperature of TOI-2490 b varies dramatically by about 1,000 K (ranging from 545 K to 1,552 K) as it travels along its orbit, a phenomenon that warrants further study.


Regarding its host star, TOI-2490, it is similar in mass to the Sun, with a radius of approximately 1.1 solar radii. The star is estimated to be 7.9 billion years old, has a metallicity of 0.32 dex, and an effective temperature of 5,558 K.


#Astronomy&Space 

#PlanetarySciences

#Newmassiveeccentricbrowndwarfdiscovered

#TomaszNowakowski , #Phys_org

Comments

Post a Comment

Popular posts from this blog

How to Conduct Audience Research For SEO:A Simplified Guide!

To excel in SEO, understanding what your audience searches for and why is crucial. Audience research unveils the intent behind search queries, helping you align strategies with user needs. This approach can uncover search behaviors, map audience intent, and identify SEO opportunities, even with limited resources. Traditional Audience Research: Methods and Challenges Traditional audience research focuses on demographic, psychographic, and behavioral insights to build audience personas. It often involves: Surveys: To gather customer feedback. Focus Groups and Interviews: To understand audience preferences and behaviors. However, as advertising pioneer David Ogilvy noted, traditional research can be flawed because people often don’t act as they say. Tools like Similarweb, Audiense, and Brandwatch can assist in audience segmentation but may not fully capture search behavior or intent. A Better Approach: Audience Research for SEO SEO-focused audience research analyzes search behavior to unc...
Post a Comment
Read more

How Often Should You Blog? A Guide to Ideal Posting Frequency

Blogging consistently is key to keeping your audience engaged and growing your reach. However, just having a blog isn’t enough. To attract traffic, establish your brand, or generate leads, you need a steady flow of fresh, valuable content. But how often should you post to get results? Here’s the answer: there’s no universal number of posts per week that’s perfect for every blog. Finding your ideal blogging frequency depends on your niche, audience size, content quality, and your goals. Here’s how to determine what’s right for you. --- Key Factors for Deciding Blog Frequency 1. Goals and Audience Define your primary goal: brand awareness, thought leadership, or sales? Different goals may require different paces. Understand your audience’s preferences. A tech guide blog may thrive with in-depth, less frequent posts, while a news blog benefits from regular updates. 2. Blog Age and Maturity Newer blogs need frequent, high-quality posts to establish a presence. As the blog matures and gains...
Post a Comment
Read more

The Incredible Benefits of Push-Ups:Why You Should Start Today?

  Push-ups are more than just an exercise; they are a life-changer. This simple yet powerful movement is a total body workout that can transform your strength, health, and confidence. Why Push-Ups Are a Game-Changer: 1. Builds Upper Body Strength: Push-ups work your chest, shoulders, and triceps, giving you a toned and powerful upper body. 2. Core Stability: Every push-up engages your core muscles, helping you build a stronger, more stable midsection. 3. Improves Posture: Regular push-ups strengthen the muscles that support your spine, reducing slouching and back pain. 4. Burns Calories: Push-ups are an efficient calorie-burner, aiding weight loss and boosting metabolism. 5. Convenience: No equipment? No problem! Push-ups can be done anywhere, anytime. If you find this helpful and want to support me directly, why not ?buymeacoffee.com/Kabir1989 Thanks so much, and good luck! #fypã‚·゚ #trend #inspiration #everyone #boosting #viral #wp #ig #tiktok #push_ups
Post a Comment
Read more