Tootfinder

GALAXY CRUISE - spiral and ring classifications for bright #galaxies at z = 0.01–0.3: https://academic.oup.com/pasj/advance-article/doi/10.1093/pasj/psae002/7591209?login=false -> Citizen Astronomers and AI Discover 30,000 Ring Galaxies: https://subarutelescope.org/en/results/2024/03/13/3375.html

Still can’t believe I can make images like this from my driveway
(125h LHaRGB combination)
#astrophotography

Ma dernière session d'astrophoto de samedi soir. Un amas de galaxies (Abell 2151) dans la constellation d'Hercule. Plein de jolies petites tachounettes. Mais va falloir que je me résolve Š nettoyer le capteur de ma caméra, il y a un gros pâté que je n'arrive pas Š éliminer complètement pendant le traitement photo... 😱
Bon faut pas trop grossir non plus, les étoiles ne sont pas très rondes, je reprendrai le traitement tard au calme...

Most of the photons that reionized the Universe came from dwarf galaxies | Nature
#thankyoudwarfgalaxies<…

Most of the photons that reionized the Universe came from dwarf galaxies - Nature
An analysis of eight ultra-faint galaxies during the epoch of reionization with absolute magnitudes between −17 mag and −15  mag shows that most of the photons that reionized the Universe come from dwarf galaxies.

Still working on Markarian’s Chain, a galaxy cluster in Virgo.
First image shows two of the larger galaxies, “The Eyes”.
The second image shows very faint Hydrogen alpha emissions—which are just about starting to be visible after 20h of exposure time.
#astrophotography

I collected some photons from the galaxies M81 & M82 in Ursa Major, just before they crashed into my driveway (the photons, not the galaxies).
#astrophotography

Possible #PopulationIII signatures at z=10.6 in the halo of GN-z11 / A small and vigorous black hole in the early Universe: #Webb Unlocks Secrets of One of the Most Distant #Galaxies Ever Seen: https://webbtelescope.org/contents/news-releases/2024/news-2024-106 and https://science.nasa.gov/missions/webb/webb-unlocks-secrets-of-one-of-the-most-distant-galaxies-ever-seen/

Ma dernière session d'astrophoto de samedi soir. Un amas de galaxies (Abell 2151) dans la constellation d'Hercule. Plein de jolies petites tachounettes. Mais va falloir que je me résolve Š nettoyer le capteur de ma caméra, il y a un gros pâté que je n'arrive pas Š éliminer complètement pendant le traitement photo... 😱
Bon faut pas trop grossir non plus, les étoiles ne sont pas très rondes, je reprendrai le traitement tard au calme...

If each country's airspace included all the stars and galaxies (and black holes 🫣) "above" them, some might have overloaded immigration or court systems. Others would own the galactic core for a couple of hours every day. 😊
#XKCD #WhatIf

EIGER - Characterizing the Host #Galaxies of Luminous #Quasars at z ≳ 6: #JWST ... that telescope has already become a kinda unexciting normal thing for astronomy.)

Bad day? Here have some galaxies as seen from my backyard #astrophotography

Some photons that I recently trapped on my driveway
Galaxies in Markarian's Chain
#astrophotography

A serendipitous discovery of H I-rich #GalaxyGroups with #MeerKAT: #galaxies in under three hours: https://www.sarao.ac.za/news/astronomers-discover-49-new-galaxies-in-under-three-hours/

Pas d'aurores cette nuit mais un joli ciel quand même. Une dernière séance photo, un amas de galaxies dans Hercule. Le contraste est saisissant avec la nuit dernière. Il a fait vraiment sombre cette nuit alors qu'hier la clarté était crépusculaire tout au long de la nuit.
Quatre nuits blanches, des belles photos, une dinguerie d'aurore, what a weekend, les zamis !
#Astrodon

The oldest stars with low neutron-capture element abundances and origins in ancient dwarf galaxies: #stars in our own galactic backyard: https://news.mit.edu/2024/mit-researchers-discover-universes-oldest-stars-in-galactic-backyard-0514 - three stars circling the Milky Way’s halo formed 12 to 13 billion years ago.

Massive and Multiphase Gas Outflow in a Quenching Galaxy at z=2.445: #JWST observations reveal black holes rapidly shut off #StarFormation in massive #galaxies: https://www.swinburne.edu.au/news/2024/04/New-JWST-observations-reveal-black-holes-rapidly-shut-off-star-formation-in-massive-galaxies/

Some recent photons from my driveway, a very faint hydrogen gas bridge between two galaxies about 50 million light years away.
At some point in the past the larger galaxy collided with the one at the bottom and basically ripped it apart, dragging some hydrogen gas with it.
This is about 52 hours of exposure time.
#astrophotography

Galaxy groups and clusters and their brightest #galaxies within the cosmic web: https://www.aanda.org/articles/aa/full_html/2024/01/aa47504-23/aa47504-23.html -> Galaxy groups and clusters do not differ just in the number of galaxies: https://www.eurekalert.org/news-releases/1035766

The Cigar Galaxy and Bode's Galaxy in Ursa Major; as seen from my driveway #astrophotography

A JWST investigation into the bar fraction at redshifts 1 ≤ z ≤ 3: #galaxies evolved faster than previously thought: https://www.durham.ac.uk/news-events/latest-news/2024/04/star-bars-galaxy-evolution-research/

World’s highest observatory explores the universe: #TAO telescope in Chile aims to reveal origins of planets, galaxies and more.

Insights from #HST into Ultra-Massive #Galaxies and Early-Universe #Cosmology: #Webb telescope ‘break the universe’? Maybe not: #JWST is telling them.