Search Publications
Detection of new O-type stars in the obscured stellar cluster Tr 16-SE in the Carina Nebula with KMOS
Preibisch, T.; Roccatagliata, V.; Ercolano, B. +2 more
Context. The Carina Nebula harbors a large population of high-mass stars, including at least 75 O-type and Wolf-Rayet (WR) stars, but the current census is not complete since further high-mass stars may be hidden in or behind the dense dark clouds that pervade the association.
Aims: With the aim of identifying optically obscured O- and early …
Subsurface Reflectors Detected by SHARAD Reveal Stratigraphy and Buried Channels Over Central Elysium Planitia, Mars
Tao, Yu; Muller, Jan-Peter; Xiong, Siting +3 more
The Central Elysium Planitia (CEP) is one of the youngest geological units on Mars and displays evidence of volcanic and fluvial activities on the surface. The origin of the CEP material has long been debated with a range of hypotheses from purely fluvial to solely volcanic origins. This study presents a comprehensive investigation of SHAllow RADa…
Reconstruction Test of Turbulence Power Spectra in 3D Wavenumber Space with at Most 9 Virtual Spacecraft Measurements
He, Jiansen; Feng, Xueshang; Zhang, Lei +1 more
The k filtering/wave telescope method has been successfully applied to the 4 spacecraft measurements from Cluster II and MMS, revealing the four dimensional power spectral density (PSD, ω, k). As the number of spacecraft within a constellation increases, the geometry becomes more complicated, and it is harder to find the first Brillouin like zone,…
Atomic carbon [C I](3P1-3P0) mapping of the nearby galaxy M 83
Seta, Masumichi; Salak, Dragan; Nakai, Naomasa +6 more
Atomic carbon (C I) has been proposed to be a global tracer of the molecular gas as a substitute for CO, however, its utility remains unproven. To evaluate the suitability of C I as the tracer, we performed [C I](3P1-3P0) [hereinafter [C I](1-0)] mapping observations of the northern part of the nearby sp…
Spectroscopically Identified Emission Line Galaxy Pairs in the WISP Survey
Hathi, Nimish P.; Teplitz, Harry I.; Bunker, Andrew J. +20 more
We identify a sample of spectroscopically measured emission line galaxy (ELG) Pairs up to z = 1.6 from the Wide Field Camera 3 (WFC3) Infrared Spectroscopic Parallels (WISP) survey. WISP obtained slitless, near-infrared grism spectroscopy along with direct imaging in the J and H bands by observing in the pure-parallel mode with the WFC3 on board t…
Population-based identification of H α-excess sources in the Gaia DR2 and IPHAS catalogues
Maccarone, T. J.; Court, J. M. C.; Knigge, C. +8 more
We present a catalogue of point-like H α-excess sources in the Northern Galactic Plane. Our catalogue is created using a new technique that leverages astrometric and photomeric information from Gaia to select H α-bright outliers in the INT Photometric H α Survey of the Northern Galactic Plane (IPHAS), across the colour-absolute magnitude diagram. …
BepiColombo Ground Segment and Mission Operations
Murakami, G.; Martinez, S.; Budnik, F. +7 more
The ESA/JAXA BepiColombo mission to Mercury was launched in October 2018. It includes two scientific Mercury orbiters, flying as a single stack during the seven years interplanetary transfer, and as individual spacecraft operated by their respective space Agencies ESA and JAXA once deployed in their respective scientific orbit around Mercury. Thre…
On the Variation of Intermittency of Fast and Slow Solar Wind With Radial Distance, Heliospheric Latitude, and Solar Cycle
Wawrzaszek, Anna; Echim, Marius
Intermittency, an important property of astrophysical plasma turbulence, is studied extensively during last decades fromin-situmeasurements of the solar wind plasma and magnetic field in the ecliptic plane and at higher latitudes, and heliocentric distances between 0.3 and 5 Astronomical Units. In this paper, we review the main findings on intermi…
Linearized Field Deblending: Point-spread Function Photometry for Impatient Astronomers
Luger, Rodrigo; Hedges, Christina; Barentsen, Geert +2 more
NASA's Kepler, K2, and TESS missions employ simple aperture photometry to derive time-series photometry, where an aperture is estimated for each star, and pixels containing each star are summed to create a single light curve. This method is simple, but in crowded fields, the derived time series can be highly contaminated. The alternate method of f…
Space observations of AA Doradus provide consistent mass determinations. New HW-Vir systems observed with TESS
Heber, U.; Irrgang, A.; Reed, M. D. +5 more
We present an overview of eclipsing systems of the HW-Virginis (HW-Vir) type, based on space observations from the Transiting Exoplanet Survey Satellite (TESS) mission. We perform a detailed analysis of the properties of AA Doradus (AA Dor), which was monitored for almost a full year. This excellent time series data set permitted us to search for …