Search Publications
A wide angle view of the Sagittarius dwarf spheroidal galaxy. II. A CEMP-r/s star in the Sagittarius dwarf spheroidal galaxy
Hansen, C. J.; Bonifacio, P.; Caffau, E. +5 more
We report on the discovery and chemical abundance analysis of the first CEMP-r/s star detected in the Sagittarius dwarf spheroidal galaxy (Sgr dSph) by means of UVES high-resolution spectra. The star, found in the outskirts of Sgr dSph, along the major axis of the main body, is a moderately metal-poor giant (Teff = 4753 K, log g = 1.75,…
Dust-scattering Halo and Giant Hard X-Ray Flare from the Supergiant Fast X-Ray Transient IGR J16479-4514 Investigated with XMM-Newton and INTEGRAL
Tiengo, A.; Sidoli, L.; Bird, A. J. +1 more
We report results from the analysis of XMM-Newton and INTEGRAL data of IGR J16479-4514. The unpublished XMM-Newton observation, performed in 2012, occurred during the source eclipse. No pointlike X-ray emission was detected from the source; conversely, extended X-ray emission was clearly detected up to a size distance compatible with a dust-scatte…
MNELLS: the MUSE nearby early-type galaxy lens locator survey
Lucey, John R.; Smith, Russell J.; Collier, William P.
Low-redshift strong-lensing galaxies can provide robust measurements of the stellar mass-to-light ratios in early-type galaxies (ETGs), and hence constrain variations in the stellar initial mass function (IMF). At present, only a few such systems are known. Here, we report the first results from a blind search for gravitationally lensed emission-l…
Magnetically coupled atmosphere, fast sausage MHD waves, and forced magnetic field reconnection during the SOL2014-09-10T17:45 flare
Gömöry, P.; Mészárosová, H.
Aims: We study the physical properties and behaviour of the solar atmosphere during the GOES X1.6 solar flare on 2014 September 10.
Methods: The steady plasma flows and the fast sausage MHD waves were analysed with the wavelet separation method. The magnetically coupled atmosphere and the forced magnetic field reconnection were studied w…
A normalized statistical study of Earth's cusp region based on nine-years of Cluster measurements
Xiao, Chao; Liu, WenLong; Zhang, DianJun +1 more
Hybrid star HD 81817 accompanied by brown dwarf or substellar companion
Lee, Byeong-Cheol; Park, Myeong-Gu; Bang, Tae-Yang +4 more
HD 81817 is known as a hybrid star. Hybrid stars have both cool stellar wind properties and Ultraviolet (UV) or even X-ray emission features of highly ionized atoms in their spectra. A white dwarf companion has been suggested as the source of UV or X-ray features. HD 81817 has been observed since 2004 as a part of a radial velocity (RV) survey pro…
The Herschel SPIRE Fourier Transform Spectrometer Spectral Feature Finder I. The Spectral Feature Finder and Catalogue
Valtchanov, I.; Spencer, L. D.; Hopwood, R. +11 more
We provide a detailed description of the Herschel/SPIRE Fourier Transform Spectrometer (FTS) Spectral Feature Finder (FF). The FF is an automated process designed to extract significant spectral features from SPIRE FTS data products. Optimizing the number of features found in SPIRE-FTS spectra is challenging. The wide SPIRE-FTS frequency range (44…
Differences in radio emission from similar M dwarfs in the binary system Ross 867-8
Callingham, J. R.; Shimwell, T. W.; Intema, H. T. +5 more
Serendipitously, we rediscovered radio emission from the binary system Ross 867 (M4.5V) and Ross 868 (M3.5V) while inspecting archival Giant Metrewave Radio Telescope (GMRT) observations. The binary system consists of two M-dwarf stars that share common characteristics such as spectral type, astrometric parameters, age, and emission at infrared, o…
Discovery of an 30-yr-duration post-nova pulsating supersoft source in the Large Magellanic Cloud
Haberl, F.; Udalski, A.; Vasilopoulos, G. +3 more
Supersoft X-ray sources (SSS) have been identified as white dwarfs accreting from binary companions and undergoing nuclear burning of the accreted material on their surface. Although expected to be a relatively numerous population from both binary evolution models and their identification as type Ia supernova progenitor candidates, given the very …
Location, orbit, and energy of a meteoroid impacting the Moon during the lunar eclipse of 2019 January 21
Zuluaga, J. I.; Tangmatitham, M.; Cuartas-Restrepo, P. +5 more
During lunar eclipse of 2019 January 21, a meteoroid impacted the Moon producing a visible light flash. The impact was witnessed by casual observers offering an opportunity to study the phenomenon from multiple geographical locations. We use images and videos collected by observers in seven countries to estimate the location, impact parameters (sp…