* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Tuesday, October 28, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Free Live Entertainment – Fremont Street Experience

    Enjoy Free Live Entertainment on Fremont Street Tonight!

    What to Know About ‘Good Morning America’s 50th Anniversary Episode – Wyoming News Now

    Celebrate the Milestone: Everything You Need to Know About Good Morning America’s 50th Anniversary Episode

    Dylan Efron suffers brutal nose injury in ‘DWTS’ rehearsals – Yahoo

    Dylan Efron Endures Painful Nose Injury During ‘DWTS’ Rehearsals

    Person shot, injured in parking lot of adult entertainment club in Gresham – KPTV

    Person Shot and Injured in Gresham Adult Entertainment Club Parking Lot

    Meet Belynda From ‘Married at First Sight’ Season 19: Age, Job, Instagram and More – Yahoo

    Meet Belynda from ‘Married at First Sight’ Season 19: Age, Career, Instagram & More Revealed!

    General Hospital’s Rena Sofer Exits as Lois — But the Door Isn’t Closed – Yahoo

    General Hospital’s Rena Sofer Exits as Lois — But the Door Isn’t Closed – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Nigeria’s government is using digital technology to repress citizens. A researcher explains how – The Conversation

    Nigeria’s government is using digital technology to repress citizens. A researcher explains how – The Conversation

    CPE Technology Berhad (KLSE:CPETECH) Has Affirmed Its Dividend Of MYR0.015 – Yahoo Finance

    CPE Technology Berhad (KLSE:CPETECH) Has Affirmed Its Dividend Of MYR0.015 – Yahoo Finance

    Researchers Discover New Bacterium That Turns Food Waste Into Energy – Technology Networks

    Scientists Unveil Breakthrough Bacterium That Transforms Food Waste Into Clean Energy

    Jim Cramer on GSI Technology: “That Thing is a Rocket Ship” – Yahoo Finance

    Jim Cramer Labels GSI Technology a “Rocket Ship” Poised for Takeoff

    The Anti-Tech Backlash Is Going to Grow Stronger – Jacobin

    The Anti-Tech Backlash Is Gaining Unstoppable Momentum

    Comments to EU Regarding the Draft Revised Technology Transfer Block Exemption Regulation and Technology Transfer Guidelines – Information Technology and Innovation Foundation

    Have Your Say: Share Your Thoughts on the Draft Revised Technology Transfer Block Exemption Regulation and Guidelines

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Free Live Entertainment – Fremont Street Experience

    Enjoy Free Live Entertainment on Fremont Street Tonight!

    What to Know About ‘Good Morning America’s 50th Anniversary Episode – Wyoming News Now

    Celebrate the Milestone: Everything You Need to Know About Good Morning America’s 50th Anniversary Episode

    Dylan Efron suffers brutal nose injury in ‘DWTS’ rehearsals – Yahoo

    Dylan Efron Endures Painful Nose Injury During ‘DWTS’ Rehearsals

    Person shot, injured in parking lot of adult entertainment club in Gresham – KPTV

    Person Shot and Injured in Gresham Adult Entertainment Club Parking Lot

    Meet Belynda From ‘Married at First Sight’ Season 19: Age, Job, Instagram and More – Yahoo

    Meet Belynda from ‘Married at First Sight’ Season 19: Age, Career, Instagram & More Revealed!

    General Hospital’s Rena Sofer Exits as Lois — But the Door Isn’t Closed – Yahoo

    General Hospital’s Rena Sofer Exits as Lois — But the Door Isn’t Closed – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Nigeria’s government is using digital technology to repress citizens. A researcher explains how – The Conversation

    Nigeria’s government is using digital technology to repress citizens. A researcher explains how – The Conversation

    CPE Technology Berhad (KLSE:CPETECH) Has Affirmed Its Dividend Of MYR0.015 – Yahoo Finance

    CPE Technology Berhad (KLSE:CPETECH) Has Affirmed Its Dividend Of MYR0.015 – Yahoo Finance

    Researchers Discover New Bacterium That Turns Food Waste Into Energy – Technology Networks

    Scientists Unveil Breakthrough Bacterium That Transforms Food Waste Into Clean Energy

    Jim Cramer on GSI Technology: “That Thing is a Rocket Ship” – Yahoo Finance

    Jim Cramer Labels GSI Technology a “Rocket Ship” Poised for Takeoff

    The Anti-Tech Backlash Is Going to Grow Stronger – Jacobin

    The Anti-Tech Backlash Is Gaining Unstoppable Momentum

    Comments to EU Regarding the Draft Revised Technology Transfer Block Exemption Regulation and Technology Transfer Guidelines – Information Technology and Innovation Foundation

    Have Your Say: Share Your Thoughts on the Draft Revised Technology Transfer Block Exemption Regulation and Guidelines

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

W1055+5443 is a Y-type brown dwarf, observations find

October 24, 2023
in Science
W1055+5443 is a Y-type brown dwarf, observations find
Share on FacebookShare on Twitter

W1055+5443 is a Y-type brown dwarf, observations find

Keck/NIRES near-infrared spectrum for CWISE J105512.11+544328.3: original spectrum (gray) and 5-pixel smoothed spectrum (black). The spectrum is normalized to the J-band peak between 1.27 and 1.29 µm. Credit: arXiv (2023). DOI: 10.48550/arxiv.2310.09524

Using the Keck II telescope, astronomers have performed near-infrared spectroscopic observations of a nearby brown dwarf known as CWISE J105512.11+544328.3, or W1055+5443 for short. Results of the observational campaign, presented October 14 on the pre-print server arXiv, reveal that this object belongs to the rare class of ultracool brown dwarfs, dubbed Y dwarfs.

Brown dwarfs are intermediate substellar objects between planets and stars with masses below the hydrogen burning limit—about 80 Jupiter masses. One rare subclass of brown dwarfs, with effective temperatures lower than 500 K, is known as Y dwarfs. They are the coolest and least luminous substellar objects so far detected.

W1055+5443 is a brown dwarf at a distance of some 22.5 light years, discovered in 2012 and initially classified as a T dwarf (a subclass of brown dwarfs with effective temperatures between 500 and 1,500 K). However, new observations made by a team of astronomers led by Grady Robbins of the University of Florida, suggest that the object should be reclassified as a Y dwarf. The finding is based on the data collected with the Near-Infrared Echellette Spectrometer (NIRES) on the Keck II telescope.

“Near-infrared spectral analysis is so far the most effective method for classifying late T and early Y dwarfs, as they are very faint in the optical,” the researchers explained.

The observations found that W1055+5443 has an effective temperature of about 500 K and an absolute magnitude of 15.18 mag. These results indicate that W1055+5443 is most likely an early Y dwarf rather than a late T dwarf.

Moreover, the team found that the spectrum of W1055+5443 shows strong ammonia absorption plus methane and water absorption in the H-band, what further supports the Y-type classification. The astronomers added that the brown dwarf showcases an anomalously high H-band peak amplitude.

The study also found that the K-band flux of W1055+5443 is surprisingly high. According to the authors of the paper, the K-band spectrum of this object appears better matched to that of a mid-late T dwarf rather than a Y dwarf, yet it is still not a perfect match. The tangential velocity of W1055+5443 was estimated to be at a level of 50 km/s—therefore relatively high when compared to the solar neighborhood median value for brown dwarfs.

The astronomers noted that the unusual properties of W1055+5443 may be explained by a previously undetected companion object. However, based on the available data and binary modeling performed by them, they excluded this possibility.

Summing up the results, the scientists concluded that W1055+5443 is of spectral type Y0. They propose further observations of this brown dwarf as many of its properties like age or mass are still undetermined.

More information:
Grady Robbins et al, CWISE J105512.11+544328.3: A Nearby Y Dwarf Spectroscopically Confirmed with Keck/NIRES, arXiv (2023). DOI: 10.48550/arxiv.2310.09524

Journal information:
arXiv

© 2023 Science X Network

Citation:
W1055+5443 is a Y-type brown dwarf, observations find (2023, October 24)
retrieved 24 October 2023
from https://phys.org/news/2023-10-w10555443-y-type-brown-dwarf.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2023-10-w10555443-y-type-brown-dwarf.html

Tags: BrownscienceY-type
Previous Post

Cold storage research could put a freeze on red meat waste

Next Post

Declining Bering Sea ice linked to increasing wildfire hazard in northeast China

TwinEco: A unified framework for dynamic data-driven digital twins in ecology – ScienceDirect.com

TwinEco: Transforming Ecology Through Dynamic, Data-Driven Digital Twins

October 28, 2025
How to watch Tennessee high school girls soccer: Science Hill vs. Bearden, Oct. 28 – USA TODAY High School Sports

Don’t Miss the Exciting Tennessee High School Girls Soccer Showdown: Science Hill vs. Bearden on Oct. 28!

October 28, 2025
Scientists Just Mapped 2,600 Dreams – And Found Something Shocking – Yahoo

Scientists Map 2,600 Dreams and Uncover a Shocking Secret

October 28, 2025
Cat Learning “How To Get a Boyfriend” From Her Mom Is Adorably Hilarious – Yahoo

Cat’s Hilariously Adorable Journey Learning “How To Get a Boyfriend” From Her Mom

October 28, 2025
Nigeria’s government is using digital technology to repress citizens. A researcher explains how – The Conversation

Nigeria’s government is using digital technology to repress citizens. A researcher explains how – The Conversation

October 28, 2025
Panthers vs Bills game review: Déjà vu – Yahoo Sports

Panthers vs Bills: A Thrilling Déjà Vu Showdown

October 28, 2025
Shohei Ohtani Hits 2 Homers, Ties 119-Year-Old Record In Dodgers’ World Series Game 3 Win – FOX Sports

Shohei Ohtani Hits 2 Homers, Ties 119-Year-Old Record In Dodgers’ World Series Game 3 Win – FOX Sports

October 28, 2025
Trump’s ‘golden age’ economic message undercut by his desire for much lower interest rates – which typically signal a weak jobs market – The Conversation

Trump’s ‘Golden Age’ Economy Questioned as Calls for Lower Interest Rates Reveal Job Market Weakness

October 28, 2025
Free Live Entertainment – Fremont Street Experience

Enjoy Free Live Entertainment on Fremont Street Tonight!

October 28, 2025

SGMC Health Launches Lung Nodule Clinic to Advance Early Detection and Treatment of Lung Cancer – SGMC Health

October 28, 2025

Categories

Archives

October 2025
M T W T F S S
 12345
6789101112
13141516171819
20212223242526
2728293031  
« Sep    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (890)
  • Economy (912)
  • Entertainment (21,783)
  • General (17,856)
  • Health (9,953)
  • Lifestyle (925)
  • News (22,149)
  • People (913)
  • Politics (922)
  • Science (16,123)
  • Sports (21,412)
  • Technology (15,892)
  • World (895)

Recent News

TwinEco: A unified framework for dynamic data-driven digital twins in ecology – ScienceDirect.com

TwinEco: Transforming Ecology Through Dynamic, Data-Driven Digital Twins

October 28, 2025
How to watch Tennessee high school girls soccer: Science Hill vs. Bearden, Oct. 28 – USA TODAY High School Sports

Don’t Miss the Exciting Tennessee High School Girls Soccer Showdown: Science Hill vs. Bearden on Oct. 28!

October 28, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version