* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Saturday, August 2, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

    That’s (Political) Entertainment: When Theatre Meets Politics

    Future Script: How Generative AI Is Changing Collective Bargaining in the Entertainment Industry – Jackson Lewis

    Future Script: How Generative AI Is Transforming Collective Bargaining in Entertainment

    The SBA’s live-entertainment bailout was supposed to end two years ago. We still don’t know how $1.5 billion was spent. – Yahoo Home

    $1.5 Billion Live-Entertainment Bailout: Two Years Later, Where Did the Money Go?

    Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, Boyd – CDC Gaming

    Top Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, and Boyd Take Center Stage

  • 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
    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Emory orthopaedic surgeons use robotic technology to transform knee replacement surgery – Emory News Center

    How Robotic Technology is Revolutionizing Knee Replacement Surgery

    Cognizant Technology Solutions Corp (CTSH) Q2 2025 Earnings Call Highlights: Strong Revenue … – Yahoo.co

    Cognizant Q2 2025 Earnings: Impressive Revenue Growth and Key Takeaways

    Revving Up The U.S. Technology Engine – Forbes

    Revving Up The U.S. Technology Engine – Forbes

    More than just a hockey player – Rochester Institute of Technology Athletics

    Beyond the Ice: The Inspiring Journey of a Remarkable Athlete from Rochester Institute of Technology

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

    That’s (Political) Entertainment: When Theatre Meets Politics

    Future Script: How Generative AI Is Changing Collective Bargaining in the Entertainment Industry – Jackson Lewis

    Future Script: How Generative AI Is Transforming Collective Bargaining in Entertainment

    The SBA’s live-entertainment bailout was supposed to end two years ago. We still don’t know how $1.5 billion was spent. – Yahoo Home

    $1.5 Billion Live-Entertainment Bailout: Two Years Later, Where Did the Money Go?

    Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, Boyd – CDC Gaming

    Top Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, and Boyd Take Center Stage

  • 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
    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Emory orthopaedic surgeons use robotic technology to transform knee replacement surgery – Emory News Center

    How Robotic Technology is Revolutionizing Knee Replacement Surgery

    Cognizant Technology Solutions Corp (CTSH) Q2 2025 Earnings Call Highlights: Strong Revenue … – Yahoo.co

    Cognizant Q2 2025 Earnings: Impressive Revenue Growth and Key Takeaways

    Revving Up The U.S. Technology Engine – Forbes

    Revving Up The U.S. Technology Engine – Forbes

    More than just a hockey player – Rochester Institute of Technology Athletics

    Beyond the Ice: The Inspiring Journey of a Remarkable Athlete from Rochester Institute of Technology

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    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

Research investigates evolution of symbiotic binary HM Sagittae

December 14, 2023
in Science
Research investigates evolution of symbiotic binary HM Sagittae
Share on FacebookShare on Twitter

Research investigates evolution of symbiotic binary HM Sagittae

HST WFC3 [N II] image of HM Sge and the surrounding nebula enhanced artistically to accentuate the main nebular features of different contrast scales for the large-scale nebular structure and central region. Credit: arXiv (2023). DOI: 10.48550/arxiv.2312.01984

Using the Hubble Space Telescope (HST) and the Stratospheric Observatory for Infrared Astronomy (SOFIA), astronomers have performed a multiwavelength study of a symbiotic binary known as HM Sagittae. Results of the study, presented December 4 on the pre-print server arXiv, yield crucial insights into the evolution of this system.

Symbiotic stars are interacting binaries showcasing dramatic, episodic changes in the spectra of their light because one of the pair is a very hot, small star (e.g. white dwarf, neutron star), while the other is a cool giant. These systems may deliver crucial information for researchers studying various aspects of stellar evolution.

Located some 3,350 light years away from the Earth, HM Sagittae (or HM Sge for short) is a symbiotic system composed of a cool highly-evolved oxygen-rich (M-type) asymptotic giant branch (AGB) star, most likely a Mira variable, accreting material onto a white dwarf (WD). The two stars are separated by 40 AU and the orbital period of the system is estimated to be at least 90 days.

HM Sge experienced a nova-like outburst in 1975 when it brightened six magnitudes in the optical band. However, unlike what is observed in classical novae, the outburst remained near its peak brightness far longer than the expected few days.

Now, a team of astronomers led by Steven Goldman of the Space Telescope Science Institute (STScI) in Baltimore, Maryland, has investigated HM Sge in infrared, optical and ultraviolet bands, in order to understand how the system evolved since the 1975 outburst. For this purpose, they analyzed new and archival data from HST and SOFIA.

The study detected water emission lines in HM Sge, most of which show velocity shifts of a couple of kilometers per second. This is the first detection of water emission in a symbiotic system. Moreover, some movement of nebular features in the system has been also observed, corresponding to average outflow velocities of a few dozen kilometers per second.

Goldman’s team found that the two components of HM Sge experienced considerable changes over the past few decades. The effective temperature of the white dwarf increased from less than 200,000 K in 1989 to at least 250,000 K. A dimming in the I-band over the past year has been observed, which may be linked to the orbital motion of the system.

Furthermore, infrared photometry and grism spectroscopy of the AGB star show a slightly higher near-infrared flux and fainter far-infrared flux. The researchers assume that this may also be related to the orbital motion, or it may suggest that HM Sge has returned to producing dust at full capacity.

They added that the shape of the AGB star’s spectral energy distribution (SED) since the outburst suggests that this star swiftly returned to significant stable dust production.

Based on the collected data, the authors of the paper also found that the AGB star has a luminosity of about 1,500–2,000 solar luminosities and a gas mass-loss rate at a level of 0.000004 solar masses per year.

More information:
Steven Goldman et al, A Multi-Wavelength Study of the Symbiotic Mira HM Sge with SOFIA & HST, arXiv (2023). DOI: 10.48550/arxiv.2312.01984

Journal information:
arXiv

© 2023 Science X Network

Citation:
Research investigates evolution of symbiotic binary HM Sagittae (2023, December 14)
retrieved 14 December 2023
from https://phys.org/news/2023-12-evolution-symbiotic-binary-hm-sagittae.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/2023-12-evolution-symbiotic-binary-hm-sagittae.html

Tags: investigatesResearchscience
Previous Post

New study reveals characteristics that are shared among a group of uniquely gifted dogs

Next Post

CMC, Purdy, 49ers dominate Pro Bowl Game fan voting results

Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

August 2, 2025
New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

August 2, 2025
Foraging strategy and tree structure as drivers of arboreality and suspensory behaviour in savannah-dwelling chimpanzees – Frontiers

Foraging strategy and tree structure as drivers of arboreality and suspensory behaviour in savannah-dwelling chimpanzees – Frontiers

August 2, 2025
EPA attacks climate science. Here are the facts. – E&E News by POLITICO

EPA Questions Climate Science: Key Insights You Shouldn’t Miss

August 2, 2025
6 science-backed strategies to improve your memory – National Geographic

6 Proven Science-Backed Strategies to Boost Your Memory

August 2, 2025
Trying to keep your brain young? A big new study finds these lifestyle changes help – NPR

Trying to keep your brain young? A big new study finds these lifestyle changes help – NPR

August 2, 2025
2025 World Junior Summer Showcase: 3 things learned on Day 5 – NHL.com

3 Must-Know Highlights from Day 5 of the 2025 World Junior Summer Showcase

August 2, 2025
Economic Reality Bites Trump and His Protectionist Trade Policies – The New Yorker

How Trump’s Protectionist Trade Policies Ended Up Hurting the Global Economy

August 2, 2025
Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

August 2, 2025
President Trump Delivers Remarks on Making Health Technology Great Again – The White House (.gov)

President Trump Delivers Remarks on Making Health Technology Great Again – The White House (.gov)

August 2, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
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 (750)
  • Economy (775)
  • Entertainment (21,653)
  • General (16,243)
  • Health (9,812)
  • Lifestyle (783)
  • News (22,149)
  • People (776)
  • Politics (784)
  • Science (15,988)
  • Sports (21,271)
  • Technology (15,753)
  • World (758)

Recent News

Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

August 2, 2025
New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

August 2, 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