Search Publications
Missions
Journals
Publication Years
Astrometric Membership Tests for the Zinn-Newell-Gibson UV-bright Stars in Galactic Globular Clusters
Bond, Howard E.
In 1972, Zinn, Newell, & Gibson (ZNG) published a list of 156 candidate UV-bright stars they had found in 27 Galactic globular clusters (GCs), based on photographs in the U and V bands. UV-bright stars lie above the horizontal branch (HB) and blueward of the asymptotic giant branch (AGB) and red giant branch in the clusters' color-magnitude di…
The GALANTE photometric survey of the northern Galactic plane: project description and pipeline
García-Lario, P.; Maíz Apellániz, J.; Alfaro, E. J. +9 more
The GALANTE optical photometric survey is observing the northern Galactic plane and some adjacent regions using seven narrow- and intermediate-filters, covering a total of 1618 deg2. The survey has been designed with multiple exposure times and at least two different air masses per field to maximize its photometric dynamic range, compar…
A Distinct Population of Small Planets: Sub-Earths
Wu, Yanqin; Qian, Yansong
The sizes of small planets are known to be bimodal, with a gap separating planets that have lost their primordial atmospheres (super-Earths) and the ones that retain them (mini-Neptunes). Here, we report evidence for another distinct population at smaller sizes. By focusing on planets orbiting around GK dwarfs inward of 16 days and correcting for …
Observing the Stellar Halo of Andromeda in Cosmological Simulations: The AURIGA2PANDAS Pipeline
Grand, Robert J. J.; Gómez, Facundo A.; Fattahi, Azadeh +10 more
We present a direct comparison of the Pan-Andromeda Archaeological Survey (PAndAS) observations of the stellar halo of M31 with the stellar halos of six galaxies from the Auriga simulations. We process the simulated halos through the AURIGA2PANDAS pipeline and create PAndAS-like mocks that fold in all observational limitations of the survey data (…
The X-Ray Outburst of PG 1553+113: A Precession Effect of Two Jets in the Supermassive Black Hole Binary System
Chen, Xu; Huang, Shifeng; Yin, Hongxing +4 more
Blazar PG 1553+113 is thought to be a host of supermassive black hole binary system. A 2.2 yr quasi-periodicity in the γ-ray light curve was detected, possibly a result of jet precession. Motivated by the previous studies based on the γ-ray data, we analyzed the X-ray light curve and spectra observed during 2012-2020. The 2.2 yr quasi-periodicity …
Unraveling the inner substructure of new candidate hub-filament system in the H II region G25.4NW
Dewangan, L. K.
We present multiscale and multiwavelength data of the Galactic H II region G25.4-0.14 (hereafter G25.4NW, distance ~5.7 kpc). The SHARC-II 350-µm continuum map displays a hub-filament configuration containing five parsec-scale filaments and a central compact hub. Through the 5-GHz radio continuum map, four ionized clumps (i.e. Ia-Id) are ide…
Alternatives to Liquid Water Beneath the South Polar Ice Cap of Mars
Steinbrügge, Gregor; Schroeder, Dustin M.
Radar sounding of Mars' south polar ice cap has revealed portions of its base with stronger radar returns than its surface. These have been used to estimate high real permittivity values consistent with liquid water. However, the thermal, chemical, and geological conditions required to sustain such water bodies are challenging to achieve in the co…
3DPD: A photogrammetric pipeline for a PUSH frame stereo cameras
Cremonese, G.; Thomas, N.; Pommerol, A. +5 more
An innovative photogrammetric pipeline has been developed by INAF-Padova for the processing of the stereo images from the CaSSIS (Colour and Stereo Imaging System) (Thomas et al., 2014). CaSSIS is the multispectral stereo push frame camera on board ExoMars TGO (Trace Gas Orbiter) which will image 1.5% of the Mars surface in stereo mode with a spat…
Magnetic Fields and Star Formation around H II Regions: The S235 Complex
Ray, T. P.; Dewangan, L. K.; Luna, A. +3 more
Magnetic fields are ubiquitous and essential in star formation. In particular, their role in regulating formation of stars across diverse environments like H II regions needs to be well understood. In this study, we present magnetic field properties toward the S235 complex using near-infrared (NIR) H-band polarimetric observations, obtained with t…
Four new planetesimals around typical and pre-main-sequence stars (PLATYPUS) debris discs at 8.8 mm
Duchêne, Gaspard; Wilner, David J.; Matthews, Brenda +9 more
Millimetre continuum observations of debris discs can provide insights into the physical and dynamical properties of the unseen planetesimals that these discs host. The material properties and collisional models of planetesimals leave their signature on the grain size distribution, which can be traced through the millimetre spectral index. We pres…