Search Publications
Missions
Journals
Publication Years
CZ Aqr: An Oscillating Eclipsing Algol-type System Composed of a δ Sct Primary Star and a Subgiant Star in a Quadruple System
Li, Lin-Jia; Qian, Sheng-Bang; Liao, Wen-Ping +3 more
Eclipsing Algol-type systems containing a δ Scuti (hereafter δ Sct) star enable precise determination of physical parameters and the investigation of stellar internal structure and evolution. We present the absolute parameters of CZ Aquarius (hereafter CZ Aqr) based on TESS data. CZ Aqr has an orbital period of 0.86275209 day, a mass ratio of 0.48…
Multi-instrument observations and tracking of a coronal mass ejection front from low to middle corona
Stepanyuk, Oleg; Kozarev, Kamen
The shape and dynamics of coronal mass ejections (CMEs) vary significantly based on the instrument and wavelength used. This has led to significant debate about the proper definitions of CME/shock fronts, pile-up/compression regions, and core observations in projection in optically thin vs. optically thick emission. Here we present an observationa…
The spatially resolved relation between dust, gas, and metal abundance with the TYPHOON survey
Kewley, Lisa J.; Madore, Barry F.; Beaton, Rachael L. +12 more
We present the spatially resolved relationship between the dust-to-gas mass ratio (DGR) and gas-phase metallicity (
Dependence of star formation rate on different properties of molecular clouds
Mondal, Ashok; Chattopadhyay, Tanuka
Properties of molecular clouds (MCs) lying in our Galaxy and their star formation scenarios have been investigated with the help of multivariate unsupervised machine learning techniques concerning several observable parameters. At first, the MCs have been classified into four coherent groups using the standard K-means clustering method. Subsequent…
Comparing Gaia, NED, and SIMBAD source classifications in nearby galaxies
Hales, J.; Barmby, P.
Gaia Data Release 3 (DR3) provides the first classifications for the sources in Gaia's all-sky database. Most Gaia sources are stars in the Milky Way, but DR3 also contains many sources that belong to nearby galaxies, as well as background galaxies and quasars. In this work, we compare the Gaia classifications from the Discrete Source Classifier (…
HST Survey of the Orion Nebula Cluster in ACS/Visible and WFC3/IR Bands. IV. A Bayesian Multiwavelength Study of Stellar Parameters in the Orion Nebula Cluster
Gennaro, Mario; Pueyo, Laurent; Sabbi, Elena +4 more
We have performed a comprehensive study of the Orion Nebula Cluster (ONC) combining the photometric data obtained by the two Hubble Space Telescope Treasury programs that targeted this region. To consistently analyze the rich data set obtained in a wide variety of filters, we adopted a Bayesian approach to fit the spectral energy distribution of t…
Digitization of Astronomical Photographic Plates of China and Astrometric Measurement of Single-exposure Plates
Yang, Jing; Yu, Yong; Tang, Zheng-Hong +9 more
From the mid-19th century to the end of the 20th century, photographic plates served as the primary detectors for astronomical observations. Astronomical photographic observations in China began in 1901, and over a century, a total of approximately 30,000 astronomical photographic plates were captured. These historical plates play an irreplaceable…
Gaia Data Release 3. Summary of the content and survey properties
Prusti, T.; Mazeh, T.; Zucker, S. +453 more
Context. We present the third data release of the European Space Agency's Gaia mission, Gaia DR3. This release includes a large variety of new data products, notably a much expanded radial velocity survey and a very extensive astrophysical characterisation of Gaia sources.
Aims: We outline the content and the properties of Gaia DR3, providing…
Astrophysics with the Laser Interferometer Space Antenna
Wu, Kinwah; Haardt, Francesco; Ma, Chung-Pei +155 more
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel way. The synergy with ground-based and space-born instruments in the electromagnetic domain, by enabling multi-messeng…
A Comprehensive Study of Galaxies at z 9-16 Found in the Early JWST Data: Ultraviolet Luminosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch
Ono, Yoshiaki; Ouchi, Masami; Harikane, Yuichi +6 more
We conduct a comprehensive study on dropout galaxy candidates at z ~ 9-16 using the first 90 arcmin2 James Webb Space Telescope (JWST) Near Infrared Camera images taken by the early release observations (ERO) and early release science programs. With the JWST simulation images, we find that a number of foreground interlopers are selected…