• DMCA
  • Disclaimer
  • Privacy Policy
  • Cookie Privacy Policy
  • Terms and Conditions
  • Contact us
Inter Space Sky Way
  • Home
  • Alien
  • UFO
  • Space
  • NASA
  • Space Flight
  • Astronomy
No Result
View All Result
  • Home
  • Alien
  • UFO
  • Space
  • NASA
  • Space Flight
  • Astronomy
No Result
View All Result
Inter Space Sky Way
No Result
View All Result
Home Space

Observations detect a close-by hypervelocity stellar/substellar object

July 18, 2024
in Space
61 1
0
Observations detect a close-by hypervelocity stellar/substellar object
74
SHARES
1.2k
VIEWS
Share on FacebookShare on Twitter


You might also like

How does a flaming piece of house junk find yourself on Earth? An area archaeologist explains

Scientist Have Uncovered The First Proof of the 4.5-Billion-Yr-Previous “Proto Earth”

SpaceX may lose launch contract for Artemis 3 astronaut moon mission, NASA chief says: ‘The issue is, they’re behind’

Observations detect a nearby hypervelocity stellar/substellar object
Ahead modeling of the Keck/NIRES spectrum of J1249+3621 within the 1.10–1.19 µm (left), and 1.235–1.28 µm (proper) spectral areas, each of which include stellar and telluric absorption options. Credit score: Burgasser et al., 2024.

Utilizing the Keck II telescope, astronomers have detected an object that could be a brown dwarf or a low-mass star, exhibiting a really excessive radial velocity. The thing, designated CWISE J124909.08+362116.0 is situated some 400 mild years away. The discovering was reported July 11 on the pre-print server arXiv.

Brown dwarfs (BDs) are intermediate objects between planets and stars, occupying the mass vary between 13 and 80 Jupiter plenty (0.012 and 0.076 photo voltaic plenty). They kind like stars however aren’t sufficiently large to maintain hydrogen fusion of their cores.

Now, a crew of astronomers led by Adam Burgasser of the College of California San Diego reviews the detection of a brand new object on the brown dwarf/star mass boundary.

Utilizing the Close to-Infrared Echellette Spectrometer (NIRES) on the Keck II telescope, they investigated CWISE J124909.08+362116.0 (or CWISE J1249+3621 for brief)—a excessive correct movement faint pink supply first recognized by citizen scientists. Because of this, it turned out that the supply is a uncommon kind of hypervelocity subdwarf.

“We report the invention of a excessive velocity, very low-mass star or brown dwarf whose kinematics counsel it’s unbound to the Milky Method. (…) The quickest ‘hypervelocity’ stars are unbound to the Milky Method’s gravitational potential and should even have extragalactic origins,” the researchers defined.

In response to the research, CWISE J1249+3621 has a big radial velocity—at a degree of -103 km/s. This offers the galactic relaxation body velocity of 456 km/s, which corresponds to 1,530 mild years per a million years. Provided that this result’s just under the galactic escape velocity on the photo voltaic radius, which is presently estimated to be 521–580 km/s, the astronomers conclude that this object has a big chance of being unbound to the Milky Method.

The observations discovered that CWISE J1249+3621 has a mass of some 0.082 photo voltaic plenty and its efficient temperature is estimated to be 1,715–2,320 Ok. The metallicity of CWISE J1249+3621 was measured to be inside a variety of -1.4 and -0.5.

Primarily based on the collected information, the authors of the paper assume that CWISE J1249+3621 is probably going a hypervelocity metal-poor, early-type L subdwarf star moderately than a brown dwarf. They underline that it might due to this fact be the primary recognized low-mass hypervelocity star and the closest such object to Earth.

In attempting to find out the origin of CWISE J1249+3621, the researchers have in mind a number of totally different hypotheses, together with ejection from the galactic middle greater than three billion years in the past, or a survival because the companion to an accreting white dwarf that exploded.

Additional investigation into bodily and atmospheric properties of this object is required to be able to infer its true origin.

Extra info:
Adam J. Burgasser et al, Discovery of a Hypervelocity L Subdwarf on the Star/Brown Dwarf Mass Restrict, arXiv (2024). DOI: 10.48550/arxiv.2407.08578

Journal info:
arXiv


© 2024 Science X Community

Quotation:
Observations detect a close-by hypervelocity stellar/substellar object (2024, July 18)
retrieved 18 July 2024
from

This doc is topic to copyright. Aside from any truthful dealing for the aim of personal research or analysis, no
half could also be reproduced with out the written permission. The content material is offered for info functions solely.





Source link

Tags: detecthypervelocitynearbyObjectobservationsstellarsubstellar
Share30Tweet19

Recommended For You

How does a flaming piece of house junk find yourself on Earth? An area archaeologist explains

by Chato80
October 21, 2025
0
How does a flaming piece of house junk find yourself on Earth? An area archaeologist explains

A chunk of house junk discovered on October 18 in Western Australia’s distant Pilbara area. Credit score: WA Police The mysterious object was on hearth and mendacity in...

Read more

Scientist Have Uncovered The First Proof of the 4.5-Billion-Yr-Previous “Proto Earth”

by Chato80
October 21, 2025
0
Scientist Have Uncovered The First Proof of the 4.5-Billion-Yr-Previous “Proto Earth”

Earth has a protracted, 4.5 billion historical past filled with momentous twists and turns. A number of distinguished occasions performed main roles in Earth's story. One in every...

Read more

SpaceX may lose launch contract for Artemis 3 astronaut moon mission, NASA chief says: ‘The issue is, they’re behind’

by Chato80
October 20, 2025
0
SpaceX may lose launch contract for Artemis 3 astronaut moon mission, NASA chief says: ‘The issue is, they’re behind’

The primary crewed moon touchdown in additional than half a century is probably not pulled off by SpaceX in spite of everything.In April 2021, NASA awarded Elon Musk's...

Read more

A distant comet is forming new rings whereas we watch in actual time

by Chato80
October 21, 2025
0
A distant comet is forming new rings whereas we watch in actual time

Illustration of Chiron’s ringsDan Durda For the primary time, astronomers are watching a hoop system kind in actual time. The rings in query encircle Chiron, a comet-like object...

Read more

Sentinel-1D fuelled and prepared for encapsulation

by Chato80
October 21, 2025
0
Sentinel-1D fuelled and prepared for encapsulation

Purposes 20/10/2025 423 views 21 likes The launch marketing campaign of the subsequent satellite tv for pc to affix the Copernicus Sentinel-1 mission is progressing on schedule for...

Read more
Next Post
Full Buck Moon shines this weekend on Apollo 11 moon touchdown anniversary

Full Buck Moon shines this weekend on Apollo 11 moon touchdown anniversary

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Browse by Category

  • Alien
  • Astronomy
  • NASA
  • Space
  • Space Flight
  • UFO

Recent News

Comet 3I/ATLAS may quickly bathe NASA’s Jupiter probe in charged particles: Will it reveal extra concerning the interstellar invader?

Comet 3I/ATLAS may quickly bathe NASA’s Jupiter probe in charged particles: Will it reveal extra concerning the interstellar invader?

October 21, 2025
NASA Opens Competitors for Artemis III Lunar Lander

NASA Opens Competitors for Artemis III Lunar Lander

October 21, 2025
How does a flaming piece of house junk find yourself on Earth? An area archaeologist explains

How does a flaming piece of house junk find yourself on Earth? An area archaeologist explains

October 21, 2025
Hera And Europa Clipper Will Cross By means of 3I/ATLAS’ Tail

Hera And Europa Clipper Will Cross By means of 3I/ATLAS’ Tail

October 21, 2025
Comet C/2025 R2 (SWAN) is now at its brightest.

Comet C/2025 R2 (SWAN) is now at its brightest.

October 21, 2025
Scientist Have Uncovered The First Proof of the 4.5-Billion-Yr-Previous “Proto Earth”

Scientist Have Uncovered The First Proof of the 4.5-Billion-Yr-Previous “Proto Earth”

October 21, 2025
  • DMCA
  • Disclaimer
  • Privacy Policy
  • Cookie Privacy Policy
  • Terms and Conditions
  • Contact us
INTER SPACE SKY WAY

Copyright © 2023 Inter Space Sky Way.
Inter Space Sky Way is not responsible for the content of external sites.

No Result
View All Result
  • Home
  • Alien
  • UFO
  • Space
  • NASA
  • Space Flight
  • Astronomy

Copyright © 2023 Inter Space Sky Way.
Inter Space Sky Way is not responsible for the content of external sites.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In