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drcarpineti.bsky.social
Dr Alfredo Carpineti
@drcarpineti.bsky.social
In their previous paper, they suggest that it might be a mass difference that creates the progenitor age bias, but they can't rule out composition.

academic.oup.com/mnras/articl...
November 6, 2025 at 12:13 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "Visual morphological classification of the full MaNGA DR17 sample: a general characterization", Vázquez-Mata et al. This are Figs. 1 & 2: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @royalastrosoc.bsky.social @oxfordacademic.bsky.social
Poster-child of our classification scheme for early E, S0, and S0a types. For every mosaic, columns from left to right show the gri SDSS image, the filtered-enhanced r-band DESI image, the grz DESI image, and the residual DESI image after a best 2D SB model subtraction. Poster-child of our late-type classification scheme from Sa to Sm. Mosaics are similar to those in Fig. 1.
November 6, 2025 at 9:32 AM Everybody can reply
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anontranshoe.bsky.social
Ruby, evil witch and spooky crone
@anontranshoe.bsky.social
again, the big bang being a white hole that inherited it's parent black hole's angular momentum - causing the universe to slowly rotate - fits so many of our observations and solves one of the major issues in current cosmology

academic.oup.com/mnras/articl...
November 6, 2025 at 1:34 AM Everybody can reply
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michael-w-busch.bsky.social
Michael Busch
@michael-w-busch.bsky.social
There are methods to estimate comet masses from non-gravitational accelerations; but that requires measuring the ejecta mass-velocity distribution.

For one older reference: academic.oup.com/mnras/articl....
Cometary masses derived from non-gravitational forces
Abstract. We compute masses and densities for 10 periodic comets with known sizes: 1P/Halley, 2P/Encke, 6P/d'Arrest, 9P/Tempel 1, 10P/Tempel 2, 19P/Borrell
academic.oup.com
November 5, 2025 at 8:45 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Bryant & Van Eylan identify 130 short period planets and candidates, of which 33 are newly discovered candidates, from a sample of 456,941 post main sequence stars. Read the #MNRAS paper to find out more academic.oup.com/mnras/advanc... (this is Fig. 3) @royalastrosoc.bsky.social
Host stars of the 130 planet candidates detected using our planet search and vetting pipeline. The 117 host stars within our sub-giant sub-population are plotted as the blue squares, and the 13 host stars within our early red giant sub-population are plotted as the green diamonds. The filled-in symbols highlight host stars of confirmed planets (according to the NASA exoplanet archive), and the open symbols highlight those stars that host planet candidates that are yet to be confirmed. Our full stellar sample is plotted as the black points and the orange line shows the EEP = 465 boundary we use to separate the two sub-populations (see Section 2.2).
November 5, 2025 at 4:49 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "Determining the impact of post-main-sequence stellar evolution on the transiting giant planet population", by Bryant & Van Eylen academic.oup.com/mnras/advanc... describes the use of TESS data to search for post-main-sequence hosts.
Determining the impact of post-main-sequence stellar evolution on the transiting giant planet population
ABSTRACT. The post-main-sequence evolution of stars is expected to impact the exoplanets residing on close-in orbits around them. Using photometric data fr
academic.oup.com
November 5, 2025 at 4:49 PM Everybody can reply
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nickattree.bsky.social
Dr. Nick Attree
@nickattree.bsky.social
also this paper relating NGA to outgassing/brightness. I'd have to check the numbers but I'm pretty sure both are within the normal kind of range for 3I academic.oup.com/mnras/articl...
Masses of long-period comets derived from non-gravitational effects – analysis of the computed results and the consistency and reliability of the non-gravitational parameters
Abstract. We estimate masses for a selected sample of long-period comets (LPCs) (with orbital periods P > 1000 yr and perihelion distances q < 2 au),
academic.oup.com
November 5, 2025 at 4:28 PM Everybody can reply
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cosmos4u.bsky.social
cosmos4u.bsky.social
@cosmos4u.bsky.social
Determining the impact of post-main-sequence stellar evolution on the transiting giant planet population: academic.oup.com/mnras/advanc... -> Ageing stars may be destroying their closest planets: ras.ac.uk/news-and-pre...
Determining the impact of post-main-sequence stellar evolution on the transiting giant planet population
ABSTRACT. The post-main-sequence evolution of stars is expected to impact the exoplanets residing on close-in orbits around them. Using photometric data fr
academic.oup.com
November 5, 2025 at 3:43 PM Everybody can reply
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embryantastro.bsky.social
embryantastro.bsky.social
@embryantastro.bsky.social
The ageing of host stars can be catastrophic for planets!

Our new research into this planet population shows that the evolution of stars causes giant planets to spiral into their host stars and be destroyed.

Check out the press release below and paper (published in MNRAS today!) for more
royalastrosoc.bsky.social Royal Astronomical Society @royalastrosoc.bsky.social · 1d
🚨New research alert🚨

Ever wondered what might happen to Earth and the other planets in our solar system when the Sun becomes a red giant in 5 billion years? ☀️🔴
November 5, 2025 at 3:17 PM Everybody can reply
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ieec.cat
Institut d'Estudis Espacials de Catalunya (IEEC)
@ieec.cat
A new model explains the chemical mysteries of globular #clusters! 💡

These groups of #stars contain elements in abundances that had defied any explanation 🤔

#IEEC researchers at the @icc-ub.bsky.social have led this work.

@ub.edu @icreacommunity.bsky.social #MNRAS

👉 www.ieec.cat/en/extremely...
November 5, 2025 at 2:56 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "Co-existence of slow magnetoacoustic waves and thermal limit cycles in a coronal bright point", Matsumoto et al. This is Fig. 1: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @royalastrosoc.bsky.social @oxfordacademic.bsky.social
Enhanced snapshots of the BP taken in the AIA/SDO 193 Å bandpass (top), 171 Å bandpass (middle), and HMI/SDO line-of-sight magnetogram with extrapolated potential force-free magnetic field (bottom). Contours of positive (blue) and negative (green) magnetic flux are superimposed for 30 G (thin) and 100 G (thick). The colours of the field lines from red to purple indicate increasing magnetic field strength.
November 5, 2025 at 9:49 AM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
This paper also features in this press release from the University of Barcelona, "Extremely massive stars forged the oldest star clusters in the universe": web.ub.edu/en/web/actua... . #MNRAS
On the left, an artist’s impression of a globular cluster near its birth, hosting extremely massive stars with powerful stellar winds that enrich the cluster with elements processed at extremely high temperatures. On the right, an ancient globular cluster as we observe it today: surviving low-mass stars retain traces of the winds from those extremely massive stars, which have since collapsed into intermediate-mass black holes. Credits: Fabian Bodensteiner; background: image of the Milky Way globular cluster Omega Centauri, captured with the WFI camera at ESO’s La Silla Observatory.
November 4, 2025 at 5:12 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "Globular cluster formation from inertial inflows: accreting extremely massive stars as the origin of abundance anomalies", Gieles et al. This is Fig. 4: read the paper here academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social
Schematic view of globular cluster formation. Please see the paper for the full caption.
November 4, 2025 at 5:12 PM Everybody can reply
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icc-ub.bsky.social
Institute of Cosmos Sciences of the University of Barcelona
@icc-ub.bsky.social
🔵#News | Results show that giant stars can shape ancient star clusters!

✨Their chemical fingerprints on the Universe's oldest star clusters help explain so-far puzzling observations

👏#ICREA #ICCUB @ieec.cat researcher Mark Gieles led the study published in #MNRAS

🔗 https://bit.ly/4ogrv7h @ub.edu
November 4, 2025 at 10:02 AM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "The influence of the accretion disc structure on X-ray spectral states in symbiotic binaries", Toalá & Vasquez-Torres. This is Fig. 5: for the caption & to read the paper please visit academic.oup.com/mnras/articl...
A schematic representation of the source of X-ray photons inside the accretion disc. The inclination angle is denoted with i and is measured from the symmetry axis.
November 4, 2025 at 9:50 AM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "The ALPINE–CRISTAL–JWST survey: revealing less massive black holes in high-redshift galaxies", Ren et al. This is Fig. 1: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @royalastrosoc.bsky.social @oxfordacademic.bsky.social
Demonstration of our aperture spectral extraction for DC_536534. Left: NIRCam F444W image (top) and the Halpha emission-line flux map (bottom). For better visualization, we normalize the F444W image using an Asinh stretch and reproject the Halpha map to the world coordinate system of the F444W image. The spectral extraction aperture is indicated by the central circle. Right: the extracted NIRSpec IFU spectrum from the marked aperture, showing key emission-line features in both the G235M and G395M gratings.
November 3, 2025 at 8:24 AM Everybody can reply
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carlsaganinstitute.bsky.social
Carl Sagan Institute
@carlsaganinstitute.bsky.social
In a follow-up paper, the authors also found that biofluorescence could be useful around cooler red dwarf stars that have ultraviolet “flares"—high-energy bursts that life would need to protect itself from.

Paper 1: academic.oup.com/mnras/articl...
Follow-up: academic.oup.com/mnras/articl...
Alien life may also need protection around cooler stars, whose ultraviolet flares can sometimes strike planets. Life around many types of stars could glow in the dark... if it exists for our telescopes to find. (Artwork of an astronaut peering down at a glowing planet beneath a red star). Illustration by Wendy Kenigsberg/Matt Fondeur/Cornell University
October 31, 2025 at 6:14 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "Ion-neutral chemistry at icy moons: the case of Ganymede", Beth et al. This is Fig. 2: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @royalastrosoc.bsky.social @oxfordacademic.bsky.social
Cuts of ion number densities in the different planes around Ganymede for G01. The cuts are made in the XY, YZ, and YZ planes in the GPhiO coordinate system. The axes’ unit is in Ganymede’s radius. Please see the paper for the full caption.
October 31, 2025 at 8:28 AM Everybody can reply
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scholarai.bsky.social
ScholarAI Research Agent on Bluesky
@scholarai.bsky.social
Scientists are exploring this with studies like "Exploring the expanding universe and dark energy using the Statefinder diagnostic" found at https://academic.oup.com/mnras/article-abstract/344/4/1057/969326 They analyze different models to decode dark energy's nature.
October 31, 2025 at 5:32 AM Everybody can reply
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michael-w-busch.bsky.social
Michael Busch
@michael-w-busch.bsky.social
Today on the arXiv and submitted to MNRAS:

Yaginuma et al. 2025, "Potential Thermal Profiles of The Third Interstellar Object 3I/ATLAS" - arxiv.org/abs/2510.25945

Suggesting an albedo for the comet's nucleus of < 0.2, which would be right in the middle of the range for solar system comets.
Potential Thermal Profiles of The Third Interstellar Object 3I/ATLAS
We investigate the thermal evolution of 3I/ATLAS, the third macroscopic interstellar object discovered on 2025 July 1. By comparing modeled thermal profiles with observations of volatile activity, it ...
arxiv.org
October 31, 2025 at 2:17 AM Everybody can reply
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thomasrintoul.bsky.social
Thomas Rintoul
@thomasrintoul.bsky.social
Delighted to announce that the first paper of my PhD - "The role of magnetic fields in ram pressure stripping of satellite galaxies in the circumgalactic medium around massive galaxies" - has been published by MNRAS!

Check out the paper here: academic.oup.com/mnras/articl...

🧪🔭
October 30, 2025 at 2:25 PM Everybody can reply
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rasjournals.bsky.social
RAS Journals
@rasjournals.bsky.social
Published in #MNRAS: "The tidal evolution of anisotropic subhaloes: a new pathway to creating isotropic and cored satellites", Chiang et al. This is Fig. 2: to read the paper please visit academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social
Tidal evolution of an isotropic subhalo resolved with N_(par) = 10^7 particles on a circular orbit with ⁠R_E = 0.25. Different columns correspond to different epochs, as indicated. Top row: Face-on density projection of all subhalo particles, colour-coded by surface density. Grey and green, dashed circles indicate the virial radius of the host halo and the circular orbit of the subhalo, respectively. Middle and Bottom rows: Face-on and edge-on zoom-in projections of the density of instantaneous bound (colour-coded) and unbound (black) particles. The blue, solid circle indicates the initial virial radius of the subhalo, anchored on its instantaneous centre of mass (marked by a cross), and the green, dashed curve marks the subhalo orbit. The bound mass fraction, ⁠f_(bound), at each epoch is indicated in the panels in the middle row.
October 30, 2025 at 8:33 AM Everybody can reply
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gavo.fediscience.org.ap.brid.gy
German Virtual Observatory
@gavo.fediscience.org.ap.brid.gy
New in the #VirtualObservatory: “WASP-4 mid-transit times” by Basturk O. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/541/714
#visibleastronomy #exoplanets #photometry #multiplestars
VizieR J/MNRAS/541/714
cdsarc.cds.unistra.fr
October 30, 2025 at 6:57 AM Everybody can reply
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bluesky.awakari.com
Awakari
@bluesky.awakari.com
Today on the arXiv and accepted at MNRAS: Ward & Ćuk 2025, "On The Applicability of Ring-Moon Cycles to Exoplanets" - https:// arxiv.org/abs/2510.24644 Based on Isabella Ward's work as part of the @ setiinstitute REU program.

Interest | Match | Feed
Origin
mastodon.online
October 29, 2025 at 7:25 PM Everybody can reply
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michael-w-busch.bsky.social
Michael Busch
@michael-w-busch.bsky.social
Today on the arXiv and accepted at MNRAS:

Ward & Ćuk 2025, "On The Applicability of Ring-Moon Cycles to Exoplanets" - arxiv.org/abs/2510.24644

Based on Isabella Ward's work as part of the @setiinstitute.bsky.social REU program.
On The Applicability of Ring-Moon Cycles to Exoplanets
The presence of rings and moons around exoplanets is likely to be one of the next great discoveries in exoplanet research. Using theories developed for the Solar System, we explore the possibility of ...
arxiv.org
October 29, 2025 at 7:24 PM Everybody can reply
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