Search Publications
Census of High- and Medium-mass Protostars. V. CO Abundance and the Galactic XCO Factor
Pitts, Rebecca L.; Barnes, Peter J.
We present the second dust continuum data release in the Census of High- and Medium-mass Protostars (CHaMP), expanding the methodology trialed in Pitts et al. to the entire CHaMP survey area (280° < ℓ < 300°, - 4° < b < + 2°). This release includes maps of dust temperature (Td), H2 column density ( ${N}_{{{\rm{H}}…
Extended HNCO, SiO, and HC3N Emission in 43 Southern Star-forming Regions
Liu, Hong-Li; Zhou, Jian-Jun; Wu, Gang +9 more
We have selected 43 southern massive star-forming regions to study the spatial distribution of HNCO 404-303, SiO 2-1, and HC3N 10-9 line emission and to investigate their spatial association with the dust emission. The morphology of HNCO 404-303 and HC3N 10-9 agrees well with the du…
A Spectroscopic Study of Supernova Remnants with the Infrared Space Observatory
Rho, Jeonghee; Ravi, Aravind P.; Park, Sangwook +1 more
We present far-infrared (FIR) spectroscopy of supernova remnants (SNRs) based on the archival data of the Infrared Space Observatory taken with the Long Wavelength Spectrometer (LWS). Our sample includes previously unpublished profiles of line and continuum spectra for 20 SNRs in the Galaxy and Magellanic Clouds. In several SNRs including G21.5-0.…
Radio Counterparts of Gamma-Ray Sources in the Cygnus Region
Benaglia, Paula; Ishwara-Chandra, C. H.; Colazo, Marcelo E. +3 more
The view of the gamma-ray universe is being continuously expanded by space high-energy (HE) and ground-based very-high-energy (VHE) observatories. Yet, the angular resolution limitation still precludes a straightforward identification of these gamma-ray emitting sources. Radio observations are an effective tool for searching their possible counter…
A MeerKAT 1.28 GHz Atlas of Southern Sources in the IRAS Revised Bright Galaxy Sample
Marchetti, L.; Jarrett, T.; Moloko, M. E. +4 more
The IRAS Revised Bright Galaxy Sample (RBGS) comprises galaxies and unresolved mergers stronger than S = 5.24 Jy at λ = 60 µm with Galactic latitudes ∣b∣ > 5°. Nearly all are dusty star-forming galaxies whose radio continuum and far-infrared luminosities are proportional to their current rates of star formation. We used the MeerKAT array …
SpiKeS: Precision Warm Spitzer Photometry of the Kepler Field
Gorjian, Varoujan; Stark, Christopher C.; Lowrance, Patrick J. +11 more
The ∼200,000 targets monitored for photometric variability during the Kepler prime mission include the best-studied group of stars in the sky, due both to the extensive time history provided by Kepler and to the substantial amount of ancillary data provided by other investigators or compiled by the Kepler team. To complement this wealth of data, w…
A Grid of Synthetic Spectra for Subdwarfs: Non-LTE Line-blanketed Atmosphere Models
Diaz, Marcos P.; Levenhagen, Ronaldo S.; Coelho, Paula R. T. +1 more
A new grid of detailed atmosphere model spectra for hot and moderately cool subdwarf stars is presented. High-resolution spectra and synthetic photometry are calculated in the range from 1000-10,000 Å using non-LTE fully line-blanketed atmosphere structures. Our grid covers eight temperatures within 10,000 ≤ Teff [K] ≤ 65,000, three sur…
Identification of Single Spectral Lines in Large Spectroscopic Surveys Using UMLAUT: an Unsupervised Machine-learning Algorithm Based on Unbiased Topology
Rodighiero, G.; Vaccari, M.; Battisti, A. +19 more
The identification of an emission line is unambiguous when multiple spectral features are clearly visible in the same spectrum. However, in many cases, only one line is detected, making it difficult to correctly determine the redshift. We developed a freely available unsupervised machine-learning algorithm based on unbiased topology (UMLAUT) that …
An Entropy-stable Ideal EC-GLM-MHD Model for the Simulation of the Three-dimensional Ambient Solar Wind
Feng, Xueshang; Wei, Fengsi; Li, Caixia
The main aim of the current work is to apply the Roe+Lax-Friedrichs (LF) hybrid entropy-stable scheme to the simulation of the three-dimensional ambient solar wind. The governing equations for the solar wind flow and magnetic field utilize the entropy-consistent nine-wave magnetic field divergence diminishing ideal magnetohydrodynamics (MHD) equat…
An XMM-Newton Early-type Galaxy Atlas
Trinchieri, Ginevra; Lauer, Jennifer; Fabbiano, Giuseppina +9 more
The distribution of hot interstellar medium in early-type galaxies (ETGs) bears the imprint of the various astrophysical processes it underwent during its evolution. The X-ray observations of these galaxies have identified various structural features related to active galactic nucleus (AGN) and stellar feedback and environmental effects such as me…