Search Publications
Studying the Properties of Spacetime with an Improved Dynamical Model of the Inner Solar System
Pavlov, Dmitry; Dolgakov, Ivan
Physical properties of the Sun (orientation of rotation axis, oblateness coefficient
New method for estimating molecular cloud distances based on Gaia, 2MASS, and the TRILEGAL galaxy model
Chen, Zhiwei; Feng, Haoran; Jiang, Zhibo +2 more
We propose a new method for estimating the distances of molecular clouds traced by CO line emission. Stars from 2MASS and Gaia EDR3 are selected as on-cloud stars when they are projected on a cloud. The background on-cloud stars have redder colors on average than the foreground stars. Instead of searching for stars projected away from the cloud, w…
PEARLS: Discovery of Point-source Features within Galaxies in the North Ecliptic Pole Time Domain Field
Grogin, Norman A.; Hathi, Nimish P.; Holwerda, Benne W. +36 more
The first public 0.9–4.4 µm NIRCam images of the North Ecliptic Pole Time Domain Field uncovered galaxies displaying point-source features in their cores as seen in the longer-wavelength filters. We visually identified a sample of 66 galaxies (∼1 galaxy arcmin–2) with pointlike cores and have modeled their two-dimensional light pr…
Exploring the Origin of Cold Gas and Star Formation in a Rare Population of Strongly Bulge-dominated Early-type Galaxies
Lin, Zesen; Kong, Xu; Zhang, Chuan-Peng +7 more
We analyze the properties of a rare population, the strongly bulge-dominated early-type galaxies (sBDEs) with significant H I gas, using the databases from the FAST All Sky H I survey (FASHI) and the Arecibo Legacy Fast ALFA (ALFALFA) survey. We select the sBDEs from the Sloan Digital Sky Survey and crossmatch with the FASHI-ALFALFA combined H I s…
Study of the Carbon Star T Draconis
Tatarnikov, A. M.; Shenavrin, V. I.; Zheltoukhov, S. G. +2 more
We present the results of the infrared photometric observations in the $JHKLM$ bands and infrared spectroscopic observations in the range 1-2.5 $µ$m for the carbon Mira star T Dra performed from 2019 to 2023. An analysis of the photometric observations shows the presence of both pulsational brightness fluctuations with an amplitude falling f…
Boost recall in quasi-stellar object selection from highly imbalanced photometric datasets. The reverse selection method
Grazian, Andrea; Boutsia, Konstantina; Cupani, Guido +9 more
Context. The identification of bright quasi-stellar objects (QSOs) is of fundamental importance to probe the intergalactic medium and address open questions in cosmology. Several approaches have been adopted to find such sources in the currently available photometric surveys, including machine learning methods. However, the rarity of bright QSOs a…
Global Environmental Constraints on Magnetic Reconnection at the Magnetopause From In Situ Measurements
Lavraud, B.; Génot, V.; Jeandet, A. +5 more
Progress in locating the X-line on the magnetopause beyond the atypical due south interplanetary magnetic field (IMF) condition is hampered by the fact that the global plasma and field spatial distributions constraining where reconnection could develop on the magnetopause are poorly known. This work presents global maps of the magnetic shear, curr…
JWST NIRCam Photometry: A Study of Globular Clusters Surrounding Bright Elliptical Galaxy VV 191a at z = 0.0513
Grogin, Norman A.; Holwerda, Benne W.; Koekemoer, Anton M. +22 more
James Webb Space Telescope NIRCam images have revealed 154 reliable globular cluster (GC) candidates around the z = 0.0513 elliptical galaxy VV 191a after subtracting 34 likely interlopers from background galaxies inside our search area. NIRCam broadband observations are made at 0.9–4.5 µm using the F090W, F150W, F356W, and F444W filters. Us…
Multiplicity of stars with planets in the solar neighbourhood
Caballero, J. A.; Cortés-Contreras, M.; Cifuentes, C. +3 more
Aims. We intended to quantify the impact of stellar multiplicity on the presence and properties of exoplanets. Methods. We investigated all exoplanet host stars at less than 100 pc using the latest astrometric data from Gaia DR3 and advanced statistical methodologies. We complemented our search for common proper motion and parallax companions with…
A Broadband X-Ray Investigation of Fast-spinning Intermediate Polar CTCV J2056–3014
Hailey, Charles J.; Mori, Kaya; Ramsay, Gavin +5 more
We report on XMM-Newton, NuSTAR, and NICER X-ray observations of CTCV J2056–3014, a cataclysmic variable (CV) with one of the fastest-spinning white dwarfs (WDs) at P = 29.6 s. While previously classified as an intermediate polar, CJ2056 also exhibits the properties of WZ Sge–type CVs, such as dwarf novae and superoutbursts. With XMM-Newton and NI…