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The development of spectroscopic survey telescopes like Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), Apache Point Observatory Galactic Evolution Experiment and Sloan Digital Sky Survey has opened up unprecedented…

太阳与恒星天体物理 · 物理学 2024-04-08 Lihuan Yu , Jiangdan Li , Jinliang Wang , Jiajia Li , Jiao Li , Qiang Xi , Zhanwen Han

We analyze the photometric data in the Wide layer of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) over $\sim 1,200$ deg$^{2}$ to uncover new halo substructures beyond the distance, $D_{\odot}\sim$ 30 kpc, from the Sun. For this…

We interpret the large variety of redshift distributions of galaxies found by far-infrared and (sub-)millimeter deep surveys depending on their depth and wavelength using the B\'ethermin et al. (2012) phenomenological model of galaxy…

星系天体物理 · 物理学 2015-04-15 Matthieu Béthermin , Carlos De Breuck , Mark Sargent , Emanuele Daddi

The previous decade saw the discovery of the first four known interstellar objects due to advances in astronomical viewing equipment. Future sky surveys with greater sensitivity will allow for more frequent detections of such objects,…

天体物理仪器与方法 · 物理学 2023-03-28 Carson Ezell , Abraham Loeb

Direct imaging of exoplanets is limited by bright quasi-static speckles in the point spread function (PSF) of the central star. This limitation can be reduced by subtraction of reference PSF images. We have developed an algorithm to…

天体物理学 · 物理学 2011-02-11 David Lafreniere , Christian Marois , Rene Doyon , Daniel Nadeau , Etienne Artigau

Due to their short timescale, stellar flares are a challenging target for the most modern synoptic sky surveys. The upcoming Vera C. Rubin Legacy Survey of Space and Time (LSST), a project designed to collect more data than any precursor…

We present a new pipeline developed to detect and characterize faint astronomical companions at small angular separation from the host star using sets of wide-field imaging observations not specifically designed for High Contrast Imaging…

天体物理仪器与方法 · 物理学 2022-09-28 Giovanni M. Strampelli , Laurent Pueyo , Jonathan Aguilar , Antonio Aparicio , Gaspard Duchêne , Massimo Robberto

In this decade astronomy is undergoing a paradigm shift to handle data from next generation observatories such as the Square Kilometre Array (SKA) or the Vera C. Rubin Observatory (LSST). Producing real time data streams of up to 10 TB/s…

In the era of large photometric surveys, the importance of automated and accurate classification is rapidly increasing. Specifically, the separation of resolved and unresolved sources in astronomical imaging is a critical initial step for a…

天体物理仪器与方法 · 物理学 2019-02-07 Yutaro Tachibana , A. A. Miller

We analyse a unique sample of 517 bright ($L>L^{*}$) LBGs at redshift z$\sim$3 in order to characterise the distribution of their UV slopes $\beta$ and infer their dust extinction under standard assumptions. We exploited multi-band…

星系天体物理 · 物理学 2019-06-19 S. Pilo , M. Castellano , A. Fontana , A. Grazian , K. Boutsia , L. Pentericci , E. Giallongo , E. Merlin , D. Paris , P. Santini

We present an automated non-parametric light profile extraction pipeline called AutoProf. All steps for extracting surface brightness (SB) profiles are included in AutoProf, allowing streamlined analyses of galaxy images. AutoProf improves…

星系天体物理 · 物理学 2021-10-11 Connor Stone , Nikhil Arora , Stéphane Courteau , Jean-Charles Cuillandre

The Brighter-Fatter (hereafter BF) effect in CCD sensors causes increases in the image size of bright objects due to electrostatic repulsion of collected charges. Correcting this effect in the LSST camera is required in order to meet the…

天体物理仪器与方法 · 物理学 2019-11-22 Craig Lage

Digital co-addition of astronomical images is a common technique for increasing signal-to-noise and image depth. A modification of this simple technique has been applied to the detection of minor bodies in the Solar System: first stationary…

地球与行星天体物理 · 物理学 2015-05-18 Alex H. Parker , JJ. Kavelaars

The Vera C. Rubin Observatory will undertake the Legacy Survey of Space and Time, providing an unprecedented, volume-limited catalog of star clusters in the Southern Sky, including Galactic and extragalactic star clusters. The Star Clusters…

The Vera Rubin Observatory Legacy Survey of Space and Time (LSST) is expected to process ${\sim}10^6$ transient detections per night. For precision measurements of cosmological parameters and rates, it is critical to understand the…

The upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will enable astronomers to discover rare and distant astrophysical transients. Host-galaxy association is crucial for selecting the most scientifically…

天体物理仪器与方法 · 物理学 2025-12-01 Josh G. Weston , David R. Young , Stephen J. Smartt , Matt Nicholl , Matt J. Jarvis , I. H. Whittam

Strong gravitationally lensed supernovae (LSNe), though rare, are exceptionally valuable probes for cosmology and astrophysics. Upcoming time-domain surveys like the Vera Rubin Observatory's Legacy Survey of Space and Time (LSST) offer a…

天体物理仪器与方法 · 物理学 2026-03-04 Satadru Bag , Raoul Canameras , Sherry H. Suyu , Stefan Schuldt , Stefan Taubenberger , Irham Taufik Andika , Alejandra Melo

Upcoming wide-field time-domain surveys, such as the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) are expected to discover up to two orders of magnitude more strongly lensed supernovae per year than have so far been…