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Stellar occultations and transits occur when a planetary body passes in front of a star (including our Sun). For objects with an atmosphere, refraction plays an essential role to explain the drops of flux and the aureoles observed during…

地球与行星天体物理 · 物理学 2023-10-13 Bruno Sicardy

We present a novel, model-independent framework for studying the architecture of an exoplanetary system at the system level. This framework allows us to characterise, quantify, and classify the architecture of an individual planetary…

地球与行星天体物理 · 物理学 2023-02-15 Lokesh Mishra , Yann Alibert , Stéphane Udry , Christoph Mordasini

Image captioning models are widely used to describe recent and archived pictures with the objective of improving their accessibility and retrieval. Yet, these approaches tend to be inefficient and biased at retrieving people's names. In…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Yannis Tevissen , Khalil Guetari , Marine Tassel , Erwan Kerleroux , Frédéric Petitpont

In Papers II and III we show that Transient Lunar Phenomena (TLPs) are likely related to lunar outgassing, albeit in ways not fully understood. Here we propose a path forward, in which current and forthcoming technologies provide a more…

天体物理学 · 物理学 2007-06-28 Arlin P. S. Crotts

High-volume feature-rich data sets are becoming the bread-and-butter of 21st century astronomy but present significant challenges to scientific discovery. In particular, identifying scientifically significant relationships between sets of…

天体物理仪器与方法 · 物理学 2015-06-15 Matthew J. Graham , S. G. Djorgovski , Ashish A. Mahabal , Ciro Donalek , Andrew J. Drake

Impact craters are formed due to continuous impacts on the surface of planetary bodies. Most recent deep learning-based crater detection methods treat craters as circular shapes, and less attention is paid to extracting the exact shapes of…

图像与视频处理 · 电气工程与系统科学 2022-11-04 Atal Tewari , Vikrant Jain , Nitin Khanna

Determining the geolocation of extreme climate events and disasters in texts is a common problem in climate impact and adaptation research. Named-entity recognition (NER) tools are typically used to identify a pool of toponyms that serve as…

计算与语言 · 计算机科学 2026-05-06 Brielen Madureira , Mariana Madruga de Brito , Andreas Niekler

We present a Bayesian method for the identification and classification of objects from sets of astronomical catalogs, given a predefined classification scheme. Identification refers here to the association of entries in different catalogs…

天体物理仪器与方法 · 物理学 2015-06-15 Jörg P. Rachen

The large amount of spectra obtained during the epoch of extensive spectroscopic surveys of Galactic stars needs the development of automatic procedures to derive their atmospheric parameters and individual element abundances. Starting from…

The Kepler space telescope yielded unprecedented data for the study of solar-like oscillations in other stars. The large samples of multi-year observations posed an enormous data analysis challenge that has only recently been surmounted.…

Planetary nebulae (PNe) are strong H$\alpha$ line-emitters and a lot of new PNe discoveries have been made by the SuperCOSMOS AAO/UKST H$\alpha$ Survey (SHS) and the Isaac Newton Telescope Photometric H$\alpha$ Survey (IPHAS). However, the…

太阳与恒星天体物理 · 物理学 2019-08-20 Stavros Akras , Lizette Guzman-Ramirez , Denise R. Gonçalves

A new field of numerical astrophysics is introduced which addresses the solution of large, multidimensional structural or slowly-evolving problems (rotating stars, interacting binaries, thick advective accretion disks, four dimensional…

天体物理学 · 物理学 2009-10-30 David L. Meier

The impact of unocculted stellar surface heterogeneities in the form of cool spots and hot faculae on the spectrum of a transiting planet has been a daunting problem for the characterization of exoplanet atmospheres. The…

地球与行星天体物理 · 物理学 2020-02-12 Aishwarya R. Iyer , Michael R. Line

In 1997 Soker laid out a framework for understanding the formation and shaping of planetary nebulae (PN). Starting from the assumption that non-spherical PN cannot be formed by single stars, he linked PN morphologies to the binary…

太阳与恒星天体物理 · 物理学 2015-05-27 Orsola De Marco , Noam Soker

Gaudi, Naber & Sackett pointed out that if an event is caused by a lens system containing more than two planets, all planets will affect the central region of the magnification pattern, and thus the existence of the multiple planets can be…

天体物理学 · 物理学 2017-01-18 Cheongho Han , Myeong-Gu Park

Neutron stars are compact and dense celestial objects that offer the unique opportunity to explore matter and its interactions under conditions that cannot be reproduced elsewhere in the Universe. Their extreme gravitational, rotational and…

高能天体物理现象 · 物理学 2024-01-29 Stefano Ascenzi , Vanessa Graber , Nanda Rea

Although some of the properties of the caustics in planetary microlensing have been known, our understanding of them is mostly from scattered information based on numerical approaches. In this paper, we conduct a comprehensive and analytic…

天体物理学 · 物理学 2009-11-13 Cheongho Han

When a star is described as a spectral class G2V, we know that the star is similar to our Sun. We know its approximate mass, temperature, age, and size. When working with an extra-solar planet database, it is very useful to have a taxonomy…

地球与行星天体物理 · 物理学 2015-05-28 E. Plávalová

Neptune-size exoplanets are less studied as characterizing their atmospheres presents challenges due to their relatively small radius and atmospheric scale height. As the most common outcome of planet formation, these planets are crucial…

地球与行星天体物理 · 物理学 2025-03-04 Dwaipayan Dubey , Liton Majumdar , Charles Beichman , Geoffrey A. Blake , Gautam Vasisht , Thomas Henning

Astronomy is in an era where all-sky surveys are mapping the Galaxy. The plethora of photometric, spectroscopic, asteroseismic and astrometric data allows us to characterise the comprising stars in detail. Here we quantify to what extent…

太阳与恒星天体物理 · 物理学 2017-05-03 George C. Angelou , Earl P. Bellinger , Saskia Hekker , Sarbani Basu
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