Search Publications
The curvature emission model of peculiar isolated neutron star 2XMM J104608.7-594306
Chkheidze, N.; Machabeli, G.; Kevlishvili, N.
In the present paper we construct non-thermal emission theory, interpreting the observational properties of a newly discovered pulsar 2XMM J104608.7-594306 in X-rays that is believed to be thermally emitting isolated neutron star. A different approach of curvature emission scenario is considered, giving the spectral energy distribution that is in …
Properties of Stellar Populations of Eight Galactic Global Clusters with Low Central Surface Brightness
Sharina, M. E.; Maricheva, M. I.
This paper presents the results of the analysis of the integrated-light spectra of eight Galactic globular clusters with a relatively low luminosity and stellar density: Palomar 1, Palomar 2, Palomar 10, Palomar 13, Palomar 14, NGC 6426, NGC 6535, and NGC 6749. The absorption spectral indices in the Lick system were measured in their spectra, as w…
The BepiColombo Mission to Explore Mercury — Status Update and First Results from Science Activities During Cruise
Benkhoff, J.
In April 2020 BepiColombo has passed Earth and on 15th October 2020 Venus. The next planetary flybys will be at Venus and at Mercury in 2020. A status of the mission and a summary of first results will be given.
Titan's "Average" Ionospheric Structures from Cassini
Ip, Wing-Huen; Hsu, Jen-Kai
The decadal observations of Titan's neutral atmosphere and ionosphere by the Ion and Neutral Mass Spectrometer mass spectrometer and other instruments on board the Cassini spacecraft at the Saturnian system provide a precious data set concerning the large-scale structure of Titan's upper ionosphere. An attempt is made in this study to generate ave…
How to Get Water on the Moon
Kohler, Susanna
Given plans for future manned missions to the Moon and interest in the potential for longer-term lunar habitation the presence of water on the Moon is of critical importance. Studies over the last few decades have revealed water lurking on our satellite in numerous forms. But how does it get there?Water In, Water OutOverview of the lunar OH/H2 abu…
Dark X-Ray Galaxies in the A1367 Galaxy Cluster
Henriksen, Mark J.; Dusek, Scott
We have characterized a sample of extended X-ray sources in the A1367 galaxy cluster that lack optical counterparts. The sources are galaxy size and have an average total mass of 1.3 × 1011 solar masses. The average hot gas mass is 3.0 × 109 solar masses and the average X-ray luminosity is 4.3 × 1041 erg cm-2<…
Four New Eclipsing Binary Systems in the TESS field: CD-34 13220, HD 295082, TYC 6484-426-1 and TYC 6527-2310-1
Ulaş, Burak
We present the first evidence for the binarity of four targets in the TESS field. The temperatures are estimated by SED analysis and the orbital periods are determined. The TESS light curves of the systems are analyzed and the orbital and the absolute parameters are derived. The targets are also compared to well-studied binary systems with the sam…
Small-Scale Magnetic Structures: Cluster Observations
Gedalin, Michael; Walker, Simon N.; Balikhin, Michael A. +2 more
Within the inner magnetosphere, the occurrence of plasma waves and/or magnetic field structures plays an important role in the dynamics of the particle populations, accelerating some particles to higher energies while scattering others. The 2013 Cluster Inner Magnetosphere Campaign was designed to investigate this process based on observations mad…
The Herschel SPIRE Fourier Transform Spectrometer Spectral Feature Finder - V. Rotational measurements of NGC 891
Valtchanov, I.; Spencer, L. D.; Hładczuk, N. +2 more
The ESA Herschel Spectral and Photometric Imaging Receiver (SPIRE) Fourier Transform Spectrometer (FTS) Spectral Feature Finder (FF) project is an automated spectral feature fitting routine developed within the SPIRE instrument team to extract all prominent spectral features from all publicly available SPIRE FTS observations. In this work, we demo…
Anomalous Hα Emission Line Profile Detected at the Center of DDO 53
McQuinn, Kristen B. W.; van Zee, Liese; Hunter, Laura C. +1 more
We present the detection of a very broad (FWHM = 670 ± 17 km s-1), low-intensity Hα emission line component near the center of DDO 53, a star-forming dwarf irregular galaxy located in the M81 group. The broad component is found at the base of a bright and narrow (FWHM = 38 ± 2 km s-1) component. Using WIYN/Sparsepak optical s…