Lmst

A new paper by Yuan et al. has cited REBOUND:
Systematics and refinement of the Neptune ephemeris: Leveraging Gaia FPR and 42-year stellar occultation astrometry with an independent Triton orbit update https://ui.adsabs.harvard.edu/abs/2025A&A...703A.195Y/abstract #nbody #astrodon

A new paper by Smallwood et al. has cited REBOUND:
The polar debris disc around 99 Herculis: A potential signpost for polar circumbinary planets https://ui.adsabs.harvard.edu/abs/2025MNRAS.tmp.1908S/abstract #nbody #astrodon

A new paper by Lin et al. has cited REBOUND:
Creating Pileups of Eccentric Planet Pairs Wide of Mean Motion Resonances through Divergent Migration https://ui.adsabs.harvard.edu/abs/2025ApJ...994..123L/abstract #nbody #astrodon

A very exciting paper by Kral et al. on “Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B” using astrometric measurements of the companion to search for a putative #exomoon. Half a Jupiter mass at 0.22 au maaaaybe? We’re getting closer! #astrodon #astrosci #exoplanets https://arxiv.org/abs/2511.20091

A cartoon showing the star with two planets orbiting it. The outer planet/BD has a putative moon orbiting it, and there are two dust belts further out in the system.

a set of orbital fits to the residuals from the astrometric fit. They look like a set of drunk hula hoops piled on top of each other, but definitely hinting at a signal in there.

Beware mass! 😄

📷 :https://imgur.com/gallery/physics-meme-dump-response-to-biology-dump-on-fp-8OPLju1

#cooking #physics #astrodon #science #humor #meme #baking

A chart titled “OOPS! YOU ADDED TOO MUCH:” showing chocolate-chip cookies labeled butter, sugar, flour, baking soda, and egg, plus a final tile labeled “mass” that is a swirling black hole instead of a cookie.

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Nebula N159 - Stellar Nursery - NASA/ESA JWST Space Telescope

Full size 10K image: https://flic.kr/p/2rHmEwm

Credit: NASA/ESA/CSA/STScI/j. Roger/Andrea Luck CC BY

#Space #astronomy #JWST #NASA #ESA #CSA #Astrodon

In this JWST image, a red and blue nebula spreads unevenly like a drifting cloud. The red forms an irregular, torn-fabric shape, while the blue pools in softer, rounded patches, like watercolor blooming on wet paper. Small stars and faint distant galaxies scatter across the dark background.

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Nebula N159 - Stellar Nursery - NASA/ESA JWST Space Telescope

Full size & info: https://flic.kr/p/2rHucEs
Full size 10K image: https://flic.kr/p/2rHmEwm

Credit: NASA/ESA/CSA/STScI/j. Roger/Andrea Luck CC BY

NASA/ESA JWST Webb Space Telescope
Instrument: NIRCAM
Time: 2024-11-20
Target:LHA-120-N-159-NIRCam
PI: 5114
PI: Elena Sabbi
PI Institution: NOIRLab - Gemini North (HI)
Filters: f115w, f140m, f187n, f210m, f300m, f335m, f460m

#Space #astronomy #JWST #NASA #ESA #CSA #Astrodon

This #TESStuesday, it looks like a new high-level science product (HLSP) for TESS is coming to MAST soon: TEQUILA, by Ogunwale et al. 🌵

https://arxiv.org/abs/2511.19313

This looks like a surprisingly simple but effective differential imaging + simple aperture photometry pipeline. Light curves aren't available yet so I'll be watching out to maybe have a look for some red giants to see how it fares with solar like oscillators.

#astronomy #astrodon

Figure 10 from Ogunwale et al. (2025), which presents a new light curve pipeline for TESS, called TEQUILA. The figure compares its results with three other custom TESS light curve pipelines for three different types of variables star: a spot-modulated star, a Mira variable and an eclipsing binary star.

RE: https://mastodon.online/@cplberry/115577894655909992

I think these articles are great examples of science journalism—not all science is clear cut. Sometimes results are inconclusive. The mystery can dive us on to collect more data to figure things out. Much of being a scientist is not making breakthroughs, but wondering why that odd thing happened?

#Astrodon #sciComm #Science

Chandra's Fall Collection 🍂

A quartet of images that invoke themes associated with autumn

1. NGC 6334 nebula: Cosmic leaves blowing
2. SNR G272.2-03.2: The Space Pumpkin
3. R Aquarii: A cosmic sweater
4. NGC 2207 and IC 2163: A pair of galactic cornucucopia

https://chandra.harvard.edu/photo/2025/fall/

#Chandra #ChandraObservatory #astronomy #astrophysics #astrodon #galaxies #space #science

For many, nothing evokes fall more than fallen leaves. In this view of NGC 6334, glowing pockets of dust and gas in the nebula resemble leaves that have been picked up by a wind gust. This region is actually home to strong winds blowing from the young stars that have formed there. This image contains X-ray data from Chandra (blue, green, and yellow) that shows the effects of these winds, which have been combined with infrared data from the now-retired Spitzer Space Telescope (red, brown), which shows the dust and gas that fuels the growing stars.

Credit: X-ray: NASA/SAO/CXC; Infrared: NASA/JPL/CalTech/Spitzer; Image Processing: NASA/CXC/SAO/J. Schmidt

Born after a violent explosion of a star, this cosmic gourd is the supernova remnant G272.2-03.2. X-ray observations (orange and magenta) from Chandra provide evidence that G272 is the result of a Type Ia supernova explosion, where a white dwarf star pulls material from a companion star until it triggers a thermonuclear explosion and obliterates the star. The inside of the “pumpkin” is superheated gas that is filling the space cleared out by the explosion as it moves outward.

Credit: X-ray: NASA/CXC/SA0; Optical: NOIRLab/DECaPS2; Image Processing: NASA/CXC/SAO/L. Frattare

Multiple telescopes teamed up to capture an image that looks like a cozy sweater with fuzzy arms. X-rays from Chandra and ESA’s XMM-Newton (purple), optical light data from Hubble and the Very Large Telescope in Chile (orange, red, and violet), and an optical image from astrophotographer Bob Fera (deep blue) combine to reveal R Aquarii. Nestled within the cozy ‘body’ of R Aquarii is a pair of stars where a white dwarf is pulling material from a much larger red giant companion. When enough material accumulates on the surface of the white dwarf, it triggers an outburst that sends a jet out into space. Over time, these jets twist and loop around each other weaving the structure seen today.

Credit: X-ray: NASA/CXC/SAO; ESA/XMM-Newton; Optical HST: NASA/ESA/STScI; Optical Ground: Deep Space Remote observatories/B. Fera; ESO/VLT; Image Processing: NASA/CXC/SAO/L. Frattare

A cornucopia is a horn-shaped basket that traditionally carries fruits and vegetables. There is nothing edible in this pair of galactic cornucopias but there are a bounty of stars, dust, and other ingredients than make up these two spiral galaxies, known as NGC 2207 (right) and IC 2163 (left), that we see face-on. This view of NGC 2207 and IC 2163 takes a James Webb infrared image (white, gray, and red) and adds the X-ray view from Chandra (blue). Together, it is quite an eye-catching result.

Credit: X-ray: NASA/CXC/SAO; Infrared: NASA/ESA/CSA/STScI/Webb; Image Processing: NASA/CXC/SAO/L. Frattare

Catch up on our #GWTC4 results with the recording of our webinar introducing our latest gravitational-wave catalog release and the associated data (papers arxiv.org/abs/2508.18080 and arxiv.org/abs/2508.18079)

https://youtu.be/fFKD-6parxY?si=VzpsxNYQfG4UE9RH

#Astrodon #OpenData #GravitationalWaves

Mars-bound ESCAPADE mission captures first selfies

One of the two #ESCAPADE spacecraft used its Visible and Infrared Observation System (VISIONS) cameras to capture images showing part of a solar panel, showing the cameras are working well.

https://science.nasa.gov/blogs/escapade/2025/11/24/nasas-mars-bound-escapade-mission-captures-first-selfies/

#Mars #spacecraft #space #astrodon #science #news

Everything is better with lasers.
https://mastodon.social/@esoastronomy/115609280601422206

#Astronomy #Astrodon

1/ A telescope fist bump in the sky 🤜 🤛

Only by working together can our Unit Telescopes become the Very Large Telescope Interferometer. By combining the light, the VLTI obtains the level of detail of a huge 130 m virtual telescope. Yet this requires correcting the effects of Earth’s atmosphere. So, new lasers were installed in the previously unequipped UTs as part of the GRAVITY+ upgrade.

More: https://www.eso.org/public/images/potw2547a/

📷 J. Beltrán/ESO

#astrodon #astronomy #astrophysics #space #science

Four massive cylindrical like structures are visible on the bottom. Out of all of these metal structures, a laser is shooting up into the sky to a spot where all four lasers meet

Ok, it took me some time to get back to it, but as promised, I got around to wrap up a blogpost and share the stacked image of comet A6 Lemmon (which I took at the beginning of this month) - more details and images here:

https://www.astrocg.de/index.php/2025/11/24/photographing-a-comet/

(site is still work in progress)

#astrodon #astrophotography #comet

Comet in the center of the image in a blue starry star. Faint clouds surrounding it.

Spinning into the merging binary black hole family tree

https://astrobites.org/2025/11/21/gw-hierarchical-merger/ by Neev Shah

Astrobites report on the potential implications of our discovery of #GW241011 and #GW241110

#Astrodon

Ein Jahr nach meiner Weitwinkelaufnahme der Plejaden habe ich den Sternhaufen erneut mit engerem Bildausschnitt fotografiert. Die feinen Strukturen der blauen Reflexionsnebel kommen jetzt deutlich besser zur Geltung – filigrane Staubfilamente, Bögen und zarte Wolken rund um die heißen jungen Sterne.

https://adfr.io/astro/20251122_m45/

#astrophotography
#astrophoto
#astrodon
#deepsky
#astronomy
#deepskyphotography
#cosmos

Cosmography archives

Nêbuleuses découvertes par différens Astronomes, que M. Messier a cherchées inutilement.

Connoissance des Temps, ou Connoissance des Mouvemens Célestes, Pour l'Année bissextile 1784, pp 268-269.

https://gallica.bnf.fr/ark:/12148/bpt6k6514280n

#Cosmography #CosmographyArchives #Messier #nebulae #ConnoissancedesTemps #astronomy #astrodon #archives #history #HistoryOfScience #Hevelius #LaCaille #Cassini #Flamsteed #astronmer #astronomers #science

The first page of a detailed account of Messier's unsuccessful attempts at confirming the existence of several nebulae reported by Hevelius, La Caille, Cassini, and Flamsteed.

The second page of a detailed account of Messier's unsuccessful attempts at confirming the existence of several nebulae reported by Hevelius, La Caille, Cassini, and Flamsteed.

25 Years of Gemini Part I: The Origin of the International Gemini Observatory

How a bold international collaboration launched an ambitious project to create the next generation of world-class 8-meter telescopes

https://noirlab.edu/public/blog/origin-international-gemini-observatory/

#Gemeni #GemeniObservatory #Maunakea #telescope #telescopes #science #astronomy #astrodon #hawaii

NASA’s Europa Clipper captured this image of a starfield - and the planet Uranus - on Nov. 5, 2025, while experimenting with one of its 2 stellar reference units. These star-tracking cameras are used for maintaining spacecraft orientation.

https://science.nasa.gov/photojournal/europa-clipper-captures-uranus-with-star-tracker-camera/

#Europa #EuropaClipper #space #science #news #Uranus #Jupiter #moon #astrodon #stars #starfield #spacecraft

#astrodon

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