Search Publications
Results from the SuperModel analysis of the X-COP galaxy clusters sample
Fusco-Femiano, Roberto
In this work, the analysis of the stacked projected temperature profile of 12 galaxy clusters of the X-COP sample is performed via the SuperModel, a tool for investigating the intracluster medium thermodynamic properties already tested on many clusters since 2009. Two separate fits have been carried out: to the joint X-ray and SZ-projected tempera…
Absolute dimensions of the low-mass eclipsing binary system NSVS 10653195
Torres, Guillermo; López-Morales, Mercedes; Coughlin, Jeffrey L. +3 more
Context. Low-mass stars in eclipsing binary systems show radii larger and effective temperatures lower than theoretical stellar models predict for isolated stars with the same masses. Eclipsing binaries with low-mass components are hard to find due to their low luminosity. As a consequence, the analysis of the known low-mass eclipsing systems is k…
Low-frequency magnetic variations at the high-β Earth bow shock
Petrukovich, Anatoli A.; Chugunova, Olga M.; Shustov, Pavel I.
Observations of Earth's bow shock during high-β (ratio of thermal to magnetic pressure) solar wind streams are rare. However, such shocks are ubiquitous in astrophysical plasmas. Typical solar wind parameters related to high β (here β>10) are as follows: low speed, high density, and a very low interplanetary magnetic field of 1-2 nT. These cond…
A catalogue of nuclear stellar velocity dispersions of nearby galaxies from Hα STIS spectra to constrain supermassive black hole masses
Sarzi, Marc; Dalla Bontà, Elena; Corsini, Enrico Maria +4 more
We present new measurements for the nuclear stellar velocity dispersion σ* within sub-arcsecond apertures for 28 nearby galaxies. Our data consist of Space Telescope Imaging Spectrograph (STIS) long-slit spectra obtained with the G750M grating centred on the Hα spectral range. We fit the spectra using a library of single stellar populat…
Chromospheric UV Bursts and Turbulent-driven Magnetic Reconnection
Wu, Pin
We use Interface Region Imaging Spectrograph (IRIS) spacecraft data to study a group of Chromospheric ultraviolet bursts (UVBs) associated with an active region. We classify the UVBs into two types: smaller ones that can only be measured once by the scanning slit, and larger UVBs that are measured twice by the slit. The UVBs’ optically thin Si IV …
ExoMars Flush Air Data System: Entry Simulation and Atmospheric Reconstruction Method
Schleutker, Thorn; Gülhan, Ali; Karatekin, Özgür +1 more
Imaging and Analysis of Neon Nova V382 Vel Shell
Takeda, Larissa; Diaz, Marcos
We present the detection and imaging of the spatially resolved shell of nova V382 Vel with SOAR adaptive optics module (SAM). The shell was observed in narrow-band filters Hα and [O III] 5007 Å revealing different structures in each filter. The shell’s angular diameter obtained was 9.9 arcsec, equivalent to 2.8 × 1017 cm, using the dist…
Large-scale, sub-tropical cloud activity near Titan's 1995 equinox
Lorenz, R. D.; Caldwell, J. J.; Lemmon, M. T. +1 more
We report observations of Titan using 190 images from the Hubble Space Telescope WFPC2 and NICMOS over 4 oppositions of Titan 1994-1997. Analysis of these images yields maps of surface brightness at 0.67, 0.94, and 1.08 µm that compare well with Cassini data, plus some transient features that are interpreted as large cloud systems. These sys…
AREAcat: A Tool to Compute Area Coverage of GALEX UV GUVcat and BCScat, SDSS, PanSTARRS, and Gaia Source Catalogs in Chosen Sky Regions
de la Vega, Alexander; Bianchi, Luciana; Shiao, Bernie +1 more
We present AREAcat, an interactive online tool to compute the area mapped by recent catalogs that cover most of the sky, but not contiguously, such as the Galaxy Evolution Explorer (GALEX) ultraviolet (UV) source catalogs GUVcat_AIS. Constructed from ≲600 million measurements by removing duplicate measurements of the same source in repeated observ…
An orbit-based remote sensing geological assessment of the CanMars Mars Sample Return Analogue Deployment (MSRAD) landing site situated in the Henry Mountains Basin, near Hanksville, Utah
Tornabene, Livio L.; Battler, Melissa; Choe, Byung-Hun +1 more
Mars-analogous and relevant terrestrial- and orbit-based remote sensing datasets were gathered and used for both an in and out of simulation geological assessment of a pre-selected "landing site" for the CanMars, Mars Sample Return Analogue Deployment (MSRAD), and Mars Utah Rover Field Investigation (MURFI) analogue missions. The analogue mission …