VizieR J/A+A/707/A312

New in the #VirtualObservatory: “The fate of MS-BD binaries” by Chen Z. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A3...
#Orbits #AstronomicalReferenceMaterials #BrownDwarfs #Metallicity

VizieR J/ApJ/958/167

New in the #VirtualObservatory: “Metallicity measurements of ~500 stars across 13 UFDs” by Fu S.W. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/958/167
#DwarfGalaxies #Metallicity #HstPhotometry #VisibleAstronomy

#astronomy #space #star #Sun #metallicity

Disambiguating stellar abundances by specifying which solar abundance values are being used to normalize them!!!

VizieR J/A+A/704/A294

New in the #VirtualObservatory: “Gaia DR3 high radial velocity stars” by Katz D. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A2...
#HighVelocityStars #Metallicity #RadialVelocity #EffectiveTemperature

VizieR J/ApJS/276/29

New in the #VirtualObservatory: “UV photometry of host stars with confirmed planets” by Li X. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/276/29
#Metallicity #Exoplanets #StellarDistance #UltravioletPhotometry

VizieR J/ApJS/276/44

New in the #VirtualObservatory: “TIC star magnetic activity with LAMOST DR10 MRS sp.” by Su T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/276/44
#Metallicity #StellarRadii #StellarMasses #StellarFlares

VizieR J/ApJS/276/12

New in the #VirtualObservatory: “Blue horizontal-branch stars from LAMOST” by Ju J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/276/12
#Metallicity #HorizontalBranchStars #VisibleAstronomy #Spectroscopy

Exoplanets in the remnants of a dwarf galaxy: VOYAGERS Survey Begins Exoplanets in the remnants of a dwarf galaxy; VOYAGERS survey searches for planets around ancient low-metallicity stars from mer...

#Planets #Astronomy #DwarfGalaxy #ExoplanetScience […]

[Original post on nasaspacenews.com]

VizieR J/A+A/703/A100

New in the #VirtualObservatory: “Open cluster parameters derived using Gaia XP” by Nizovkina M. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/703/A1...
#OpenStarClusters #Metallicity #Extinction #StellarDistance

Original post on astrobites.org

Fast metal factories at z ~ 5, lessons from ALPINE-CRISTAL-JWST JWST reveals galaxies that built up heavy elements at record speed, reaching near-modern metallicities only a billion years after the...

#Daily #Paper #Summaries #extragalactic #fundamental […]

[Original post on astrobites.org]

VizieR J/A+A/702/A148

New in the #VirtualObservatory: “Estimating [Fe/H] of RR Lyrae using Gaia DR3” by Monti L. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A1...
#VisibleAstronomy #VariableStars #Metallicity

VizieR J/A+A/702/A59

New in the #VirtualObservatory: “M104 Globular cluster catalogue” by Fahrion K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A59
#RadialVelocity #GlobularStarClusters #Metallicity #Photometry

Original post on astrobites.org

A Tale of Two Quenching Pathways Do galaxies shut off star formation from the inside-out or the outside-in? And what does that tell us about their history? Title: Building up JWST-SUSPENSE: inside-...

#Daily #Paper #Summaries #cosmic #noon #galaxies […]

[Original post on astrobites.org]

Original post on sci.news

Webb Detects Biosignature Gas Phosphine in Atmosphere of Ancient Brown Dwarf Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected phosphine (PH3) in the atmosphere of Wolf 11...

#Astronomy #Featured #Atmosphere #Biosignature #gas #Brown […]

[Original post on sci.news]

Original post on sci.news

Webb Detects Biosignature Gas Phosphine in Atmosphere of Ancient Brown Dwarf Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected phosphine (PH3) in the atmosphere of Wolf 11...

#Astronomy #Featured #Atmosphere #Biosignature #gas #Brown […]

[Original post on sci.news]

VizieR J/A+A/701/A228

New in the #VirtualObservatory: “Sagittarius stream with RRLs from Gaia DR3” by Muraveva T. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/701/A2...
#Metallicity #StellarDistance #VisibleAstronomy #VariableStars

VizieR J/MNRAS/515/4574

New in the #VirtualObservatory: “Pulsation study of 176 HADS stars with OGLE” by Netzel H. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/515/...
#GalacticCenter #StellarAges #EffectiveTemperature #Metallicity

VizieR J/MNRAS/515/1903

New in the #VirtualObservatory: “Stars cluster and RGBs study in NGC362” by Vargas C. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/515/...
#EffectiveTemperature #VisibleAstronomy #Astrometry #Metallicity

VizieR J/MNRAS/515/1469

New in the #VirtualObservatory: “Milky Way red clump bulge stars with BDBS” by Johnson C.I. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/515/...
#MilkyWayGalaxy #Metallicity #StellarDistance #Extinction

VizieR J/A+A/701/A136

New in the #VirtualObservatory: “RR Lyrae stars trace the Milky Way warp” by Cabrera-Gadea M. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/701/A1...
#VariableStars #MilkyWayGalaxy #StellarDistance #Metallicity

VizieR J/A+A/701/A64

New in the #VirtualObservatory: “List of planets from HARPS/Coralie surveys” by Emsenhuber A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/701/A64
#MultipleStars #Exoplanets #VisibleAstronomy #Metallicity

VizieR J/A+A/700/A74

New in the #VirtualObservatory: “Metallicity maps of the Magellanic Clouds” by Omkumar O.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/700/A74
#MagellanicClouds #StellarDistance #Metallicity #MediumBandPhotometry

VizieR J/A+A/700/A13

New in the #VirtualObservatory: “GD-1 and Kshir tidal streams metallicity and motion” by Shi W.B. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/700/A13
#MilkyWayGalaxy #GiantStars #RadialVelocity #Metallicity

VizieR J/A+A/698/A322

New in the #VirtualObservatory: “Catalog of stellar atmospheric parameters” by Li S. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/698/A3...
#CcdPhotometry #EffectiveTemperature #Metallicity

Image of NGC 6791, an ancient and unusually metal-rich open star cluster. Thousands of stars, approximately 8 billion years old, are densely packed, defying typical metallicity expectations for stars of this age. This intriguing cluster presents a cosmic puzzle regarding stellar evolution within galactic centers.

Astronomy Picture from 12/01/2000

NGC 6791: An Old, Large Open Cluster

Source: https://apod.nasa.gov/apod/ap000112.html


#NGC6791 #OpenStarCluster #CosmicMystery #StellarEvolution #Astronomy #Astrophysics #Space #Stars #MilkyWay #Metallicity

**Described in a paper that appears today in thejournal _Nature Astronomy_, the discovery means habitable exoplanets could have started forming much earlier — before the first galaxies formed and billions of years earlier than was previously thought.** This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics. “Before the first stars exploded, there was no water in the Universe because there was no oxygen,” said University of Portsmouth astronomer Daniel Whalen. “Only very simple nuclei survived the Big Bang — hydrogen, helium, lithium and trace amounts of barium and boron.” According to Dr. Whalen and his colleagues, water molecules began forming shortly after the first supernova explosions, known as Population III supernovae. These cosmic events, which occurred in the first generation of stars, were essential for creating the heavy elements — such as oxygen — required for water to exist. “Oxygen, forged in the hearts of these supernovae, combined with hydrogen to form water, paving the way for the creation of the essential elements needed for life,” Dr. Whalen said. In their study, the researchers examined two types of supernovae: core-collapse supernovae, which produce a modest amount of heavy elements, and the much more energetic Pop III supernovae, which eject tens of solar masses of metals into space. They found that both types of supernovae formed dense clumps of gas enriched with water. While the overall amount of water produced in these early supernovae was modest, it was highly concentrated in dense regions of gas, known as cloud cores, which are thought to be the birthplaces of stars and planets. These early water-rich regions likely seeded the formation of planets at cosmic dawn, long before the first galaxies took shape. “The key finding is that primordial supernovae formed water in the Universe that predated the first galaxies,” Dr. Whalen said. “So water was already a key constituent of the first galaxies.” “This implies the conditions necessary for the formation of life were in place way earlier than we ever imagined — it’s a significant step forward in our understanding of the early Universe.” “Although the total water masses were modest, they were highly concentrated in the only structures capable of forming stars and planets.” “And that suggests that planetary discs rich in water could form at cosmic dawn, before even the first galaxies.”

Water was Already Present in Primordial Universe 100-200 Million Years after Big Bang Described i...

www.sci.news/astronomy/primordial-uni...

#Astronomy #Big #Bang #Early #Universe #Galaxy #Galaxy #formation #Hydrogen #Metallicity #Oxygen

Event Attributes

**Described in a paper that appears today in thejournal _Nature Astronomy_, the discovery means habitable exoplanets could have started forming much earlier — before the first galaxies formed and billions of years earlier than was previously thought.** This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics. “Before the first stars exploded, there was no water in the Universe because there was no oxygen,” said University of Portsmouth astronomer Daniel Whalen. “Only very simple nuclei survived the Big Bang — hydrogen, helium, lithium and trace amounts of barium and boron.” According to Dr. Whalen and his colleagues, water molecules began forming shortly after the first supernova explosions, known as Population III supernovae. These cosmic events, which occurred in the first generation of stars, were essential for creating the heavy elements — such as oxygen — required for water to exist. “Oxygen, forged in the hearts of these supernovae, combined with hydrogen to form water, paving the way for the creation of the essential elements needed for life,” Dr. Whalen said. In their study, the researchers examined two types of supernovae: core-collapse supernovae, which produce a modest amount of heavy elements, and the much more energetic Pop III supernovae, which eject tens of solar masses of metals into space. They found that both types of supernovae formed dense clumps of gas enriched with water. While the overall amount of water produced in these early supernovae was modest, it was highly concentrated in dense regions of gas, known as cloud cores, which are thought to be the birthplaces of stars and planets. These early water-rich regions likely seeded the formation of planets at cosmic dawn, long before the first galaxies took shape. “The key finding is that primordial supernovae formed water in the Universe that predated the first galaxies,” Dr. Whalen said. “So water was already a key constituent of the first galaxies.” “This implies the conditions necessary for the formation of life were in place way earlier than we ever imagined — it’s a significant step forward in our understanding of the early Universe.” “Although the total water masses were modest, they were highly concentrated in the only structures capable of forming stars and planets.” “And that suggests that planetary discs rich in water could form at cosmic dawn, before even the first galaxies.”

Water was Already Present in Primordial Universe 100-200 Million Years after Big Bang Described i...

www.sci.news/astronomy/primordial-uni...

#Astronomy #Big #Bang #Early #Universe #Galaxy #Galaxy #formation #Hydrogen #Metallicity #Oxygen

Event Attributes