Search Publications
Missions
Journals
Publication Years
The Calibration of Polycyclic Aromatic Hydrocarbon Dust Emission as a Star Formation Rate Indicator in the AKARI NEP Survey
Goto, Tomotsugu; Kim, Seong Jin; Burgarella, Denis +9 more
Polycyclic aromatic hydrocarbon (PAH) dust emission has been proposed as an effective extinction-independent star formation rate (SFR) indicator in the mid-infrared, but this may depend on conditions in the interstellar medium. The coverage of the AKARI/Infrared Camera (IRC) allows us to study the effects of metallicity, starburst intensity, and a…
Searching for orbital period modulation in X-ray observations of the symbiotic X-ray binary GX 1+4
Santangelo, Andrea; Ferrigno, Carlo; Bozzo, Enrico +3 more
The symbiotic X-ray binary GX 1+4 possesses a number of peculiar properties that have been studied since the early 1970s. In particular, the orbital period has been a point of debate for many years, until radial velocity measurements were able to settle the debate. These radial velocity findings have so far not been confirmed using X-ray data, eve…
Diamond-like carbon conversion surfaces for space applications
Wurz, Peter; Schwadron, Nathan A.; Fuselier, Stephen A. +14 more
We present diamond-like carbon (DLC) conversion surfaces to detect particles with energy below 2 keV. Conversion surfaces have been widely applied in measurements of low-energy particles by instruments onboard planetary and heliophysics missions. Their effectiveness is characterized by the efficiency in changing the charge state of the incident pa…
Identifying Ae/Be stars in Gaia low-resolution BP/RP spectra
Paunzen, E.; Prišegen, M.; Bernhard, K. +2 more
Classical Be, and Herbig Ae/Be stars are mainly characterized by emission in the Hα and Hβ lines. These lines are essential to understanding the formation of massive stars and describing mass loss and stellar winds during stellar evolution. This study aims to characterize and detect classical Be and Herbig Ae/Be stars in Gaia BP/RP spectra, which …
Spectral evolution of hot hybrid white dwarfs: I. Spectral analysis
Rauch, Thomas; Werner, Klaus; Reindl, Nicole +1 more
Context. Hydrogen-rich white dwarfs (WDs) comprise the majority of the WD population, but are only rarely found at the very hot end of the WD cooling sequence. A small subgroup that exhibits both hydrogen and helium lines in their spectra, the so-called hybrid (or DAO) WDs, represents the majority of hydrogen-rich WDs at effective temperatures T
A Luminous X-Ray Active Galactic Nucleus in the Dwarf–Dwarf Galaxy Merger RGG 66
Reines, Amy E.; Kimbrell, Seth J.
We present the discovery of a luminous X-ray active galactic nucleus (AGN) in the dwarf galaxy merger RGG 66. The black hole is predicted to have a mass of M BH ∼ 105.4 M ⊙ and to be radiating close to its Eddington limit (L bol/L Edd ∼ 0.75). The AGN in RGG 66 is notable both for its presence…
Wide-binary eccentricity distribution in young star clusters: dependence on the binary separation and mass
Federrath, Christoph; Hu, Yue; Xu, Siyao +2 more
We study the wide-binary eccentricity (e) distribution in young star clusters and the role of turbulence in setting the form of the e distribution using magnetohydrodynamical simulations of star cluster formation. The simulations incorporate gravity, turbulence, magnetic fields, protostellar heating, and jets/outflows. We find that (1) simulations…
Discovery of diffuse radio source in Abell 1060
Nakazawa, Kazuhiro; Akahori, Takuya; Kurahara, Kohei +2 more
Non-thermal components in the intra-cluster medium (ICM), such as turbulence, magnetic field, and cosmic rays, imprint the past and current energetic activities of jets from active galactic nuclei (AGN) of member galaxies as well as disturbance caused by galaxy cluster mergers. Meter- and centimeter-radio observations of synchrotron radiation allo…
Fundamental Parameters of a Binary System Consisting of a Red Dwarf and a Compact Star
Ding, Xu; Ji, KaiFan; Song, ZhiMing +7 more
TIC 157365951 has been classified as a δ Scuti type by the International Variable Star Index. Through the spectra from Large Sky Area Multi-Object Fiber Spectroscopic Telescope and its light curve, we further discovered that it is a binary system. This binary system comprises a red-dwarf star and a compact star. Through the spectral energy distrib…
Determinación de parámetros astrofísicos de cúmulos abiertos a partir de fotometría de GAIA
Simondi-Romero, F. O.; Ahumada, A. V.; Callen, A. R. +5 more
As a continuation of a project within the framework of the General Astrophysics subject (FaMAF, UNC), astrophysical parameters of 4 open clusters of the Milky Way are presented. Based on Gaia DR3 photometric data and fitting theoretical isochrones in the color-magnitude diagrams $(G_{BP}-G_{RP}, G)$, ages, metallicities, distances and color excess…