output
19942026
most citedThe Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package

5k citations

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405 papers · 1 filter

astro-ph.EP2026

Isotopic Evidence for a Cold and Distant Origin of the Interstellar Object 3I/ATLAS

Martin Cordiner, Nathan X. Roth, Marco Micheli +16

Interstellar objects provide the only directly observable samples of icy planetesimals formed around other stars, and can therefore provide insight into the diversity of physical a…

astro-ph.EP2026★ 1 cited

Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903

Thomas G. Wilson, Anna M. Simpson, Andrew Collier Cameron +173

Small exoplanet radii show two populations, referred to as super-Earths and sub-Neptunes, separated by a gap known as the radius valley. This may be produced by the removal of atmo…

astro-ph.EP2026★ 2 cited

TIC-65910228 b / NGTS-38 b, a 180 day transiting warm super-Jupiter

Toby Rodel, Solène Ulmer-Moll, Samuel Gill +63

We present the discovery of TIC-65910228 b / NGTS-38 b, a giant exoplanet with a radius of R and a mass of M on a long-…

astro-ph.EP2025★ 3 cited

Detection and characterisation of a 106-day transiting Jupiter : TOI-2449 b / NGTS-36 b

S. Ulmer-Moll, S. Gill, R. Brahm +64

Only a handful of transiting giant exoplanets with orbital periods longer than 100 days are known. These warm exoplanets are valuable objects as their radius and mass can be measur…

astro-ph.EP2025

Granulation on a quiet K dwarf: HD 166620 I. Spectral signatures as a function of line-formation temperature

Ancy Anna John, Khaled Al Moulla, Niamh K. O'Sullivan +14

As Radial velocity (RV) spectrographs reach unprecedented precision and stability below 1 m/s, the challenge of granulation in the context of exoplanet detection has intensified. D…

astro-ph.EP2025

Discovery of a multi-planetary system orbiting the aged Sun-like star HD 224018

M. Damasso, L. Naponiello, A. Anna John +22

In 2016, Kepler/K2 detected a system of two sub-Neptunes transiting the star HD 224018, one of them showing a mono-transit event. In 2017, we began a spectroscopic follow-up with H…

astro-ph.EP2025★ 8 cited

NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

Colin Orion Chandler, Pedro H. Bernardinelli, Mario Jurić +305

We report on the observation and measurement of astrometry, photometry, morphology, and activityof the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS) with the NSF-…

astro-ph.EP2025★ 4 cited

NLTE atmospheric modelling of the ultra-hot Jupiter WASP-178b and comparison with UV and optical observations

L. Fossati, A. G. Sreejith, T. Koskinen +6

We model the atmosphere of the ultra-hot Jupiter (UHJ) WASP-178b accounting for NLTE effects and compare synthetic transmission spectra with NUV and optical observations. We use th…

astro-ph.EP2024★ 12 cited

A possible misaligned orbit for the young planet AU Mic c

H. Yu, Z. Garai, M. Cretignier +98

The AU Microscopii planetary system is only 24 Myr old, and its geometry may provide clues about the early dynamical history of planetary systems. Here, we present the first measur…

astro-ph.EP2024★ 8 cited

The Discovery and Evolution of a Possible New Epoch of Cometary Activity by the Centaur (2060) Chiron

Matthew M. Dobson, Megan E. Schwamb, Alan Fitzsimmons +24

Centaurs are small Solar System objects on chaotic orbits in the giant planet region, forming an evolutionary continuum with the Kuiper belt objects and Jupiter-family comets. Some…

astro-ph.EP2024★ 1 cited

The Pictoris b Hill sphere transit campaign. Paper II: Searching for the signatures of the Pictoris exoplanets through time delay analysis of the Scuti pulsations

Sebastian Zieba, Konstanze Zwintz, Matthew Kenworthy +34

The Pictoris system is the closest known stellar system with directly detected gas giant planets, an edge-on circumstellar disc, and evidence of falling sublimating bodies and…

astro-ph.EP2024★ 18 cited

High-resolution atmospheric retrievals of WASP-76b transmission spectroscopy with ESPRESSO: Monitoring limb asymmetries across multiple transits

Cathal Maguire, Neale P. Gibson, Stevanus K. Nugroho +4

Direct atmospheric retrievals of exoplanets at high-resolution have recently allowed for a more detailed characterisation of their chemistry and dynamics from the ground. By monito…

astro-ph.EP2024★ 9 cited

Main-belt and Trojan Asteroid Phase Curves from the ATLAS Survey

James E. Robinson, Alan Fitzsimmons, David R. Young +6

Sparse and serendipitous asteroid photometry obtained by wide field surveys such as the Asteroid Terrestrial-impact Last Alert System (\ATLAS) is a valuable resource for studying t…

astro-ph.EP2024★ 1 cited

A.C.I.D -- An Improved LSD Technique for Accurate Line Profile Retrieval

L. S. Dolan, E. J. W de Mooij, C. A. Watson +1

Stellar activity and planetary effects induce radial velocity (RV) offsets and cause temporal distortions in the shape of the stellar line profile. Hence, accurately probing the st…

astro-ph.EP2024★ 14 cited

Searching for NLTE effects in the high-resolution transmission spectrum of WASP-121 b with Cloudy for Exoplanets

M. E. Young, E. F. Spring, J. L. Birkby

Ultra-hot Jupiters (UHJs) undergo intense irradiation by their host stars and are expected to experience non-local thermodynamic equilibrium (NLTE) effects in their atmospheres. Su…

astro-ph.EP2024★ 8 cited

The weird and the wonderful in our Solar System: Searching for serendipity in the Legacy Survey of Space and Time

Brian Rogers, Chris J. Lintott, Steve Croft +2

We present a novel method for anomaly detection in Solar System object data, in preparation for the Legacy Survey of Space and Time. We train a deep autoencoder for anomaly detecti…

astro-ph.EP2023★ 2 cited

Ejecta Evolution Following a Planned Impact into an Asteroid: The First Five Weeks

Theodore Kareta, Cristina Thomas, Jian-Yang Li +85

The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results fr…

astro-ph.EP2023★ 16 cited

A spectroscopic thermometer: individual vibrational band spectroscopy with the example of OH in the atmosphere of WASP-33b

Sam O. M. Wright, Stevanus K. Nugroho, Matteo Brogi +26

Individual vibrational band spectroscopy presents an opportunity to examine exoplanet atmospheres in detail by distinguishing where the vibrational state populations of molecules d…

astro-ph.EP2023★ 15 cited

Unsigned magnetic flux proxy from solar optical intensity spectra

F. Lienhard, A. Mortier, H. M. Cegla +3

The photospheric unsigned magnetic flux has been shown to be highly correlated with radial velocity (RV) variations caused by solar surface activity. This activity indicator is the…

astro-ph.EP2023★ 17 cited

High-resolution Emission Spectroscopy of the Ultrahot Jupiter KELT-9b: Little Variation in Day- and Nightside Emission Line Contrasts

Andrew Ridden-Harper, Ernst de Mooij, Ray Jayawardhana +3

The transmission spectrum of the ultrahot Jupiter KELT-9b ( 4000 K) exhibits absorption by several metal species. We searched for atomic and molecular lines in its e…

astro-ph.EP2023★ 79 cited

Tuning the Legacy Survey of Space and Time (LSST) Observing Strategy for Solar System Science

Megan E. Schwamb, R. Lynne Jones, Peter Yoachim +27

The Vera C. Rubin Observatory is expected to start the Legacy Survey of Space and Time (LSST) in early to mid-2025. This multi-band wide-field synoptic survey will transform our vi…

astro-ph.EP2023★ 119 cited

Ejecta from the DART-produced active asteroid Dimorphos

Jian-Yang Li, Masatoshi Hirabayashi, Tony L. Farnham +61

Some active asteroids have been proposed to be the result of impact events. Because active asteroids are generally discovered serendipitously only after their tail formation, the p…

astro-ph.EP2022★ 11 cited

Sulfur Ion Implantations Into Condensed CO2: Implications for Europa

D. V. Mifsud, Z. Kaňuchová, P. Herczku +12

The ubiquity of sulfur ions within the Jovian magnetosphere has led to suggestions that the implantation of these ions into the surface of Europa may lead to the formation of SO2.…

astro-ph.EP2022★ 27 cited

High-Resolution Transmission Spectroscopy of the Terrestrial Exoplanet GJ 486b

Andrew Ridden-Harper, Stevanus Nugroho, Laura Flagg +11

Terrestrial exoplanets orbiting M-dwarf stars are promising targets for transmission spectroscopy with existing or near-future instrumentation. The atmospheric composition of such…