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A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like Hα Emission
DOI: 10.3847/1538-4357/aa5eb6 Bibcode: 2017ApJ...837..109L

Qian, Lei; Cai, Zheng; Kim, Minjin +7 more

We report the discovery of a 20 kpc sized {{H}}α emission in SDSS J083803.68+540642.0, a ringed dwarf galaxy ({M}V=-17.89 mag) hosting an accreting intermediate-mass black hole at z = 0.02957. Analysis of the Hubble Space Telescope images indicates that it is an early-type galaxy with a featureless low-surface brightness disk ({µ …

2017 The Astrophysical Journal
eHST 4
An XMM-Newton proton response matrix
DOI: 10.1007/s10686-017-9548-z Bibcode: 2017ExA....44..287M

Molendi, Silvano; Lotti, Simone; Mineo, Teresa +1 more

Soft protons constitute an important source of background in focusing X-ray telescopes, as Chandra and XMM-Newton experience has shown. The optics in fact transmit them to the focal plane with efficiency similar to the X-ray photon one. This effect is a good opportunity to study the environment of the Earth magnetosphere crossed by the X-ray satel…

2017 Experimental Astronomy
XMM-Newton 4
The globular cluster system of NGC 1316. IV. Nature of the star cluster complex SH2
DOI: 10.1051/0004-6361/201630227 Bibcode: 2017A&A...601A..28R

Bresolin, F.; Hilker, M.; Gómez, M. +3 more

Context. The light of the merger remnant NGC 1316 (Fornax A) is dominated by old and intermediate-age stars. The only sign of current star formation in this big galaxy is the Hii region SH2, an isolated star cluster complex with a ring-like morphology and an estimated age of 0.1 Gyr at a galactocentric distance of about 35 kpc. A nearby intermedia…

2017 Astronomy and Astrophysics
eHST 4
Observations of a Coronal Shock Wave and the Production of Solar Energetic Particles
DOI: 10.3847/1538-4357/aa6ba2 Bibcode: 2017ApJ...840...38X

Ding, M. D.; Li, C.; Xu, Z. G.

We present a study that clarifies the acceleration source/mechanism of the solar energetic particle (SEP) event on 2011 August 9. Based on the assumption of scatter-free propagation of charged particles along the interplanetary magnetic field, the solar particle release times of the electrons and protons are derived and both found to be in the dec…

2017 The Astrophysical Journal
SOHO 4
Two years of solar wind and pickup ion measurements at comet 67P/Churyumov-Gerasimenko
DOI: 10.1093/mnras/stx1571 Bibcode: 2017MNRAS.469S.262G

Glassmeier, K. -H.; Nilsson, H.; Eriksson, A. +8 more

The Ion and Electron Sensor (IES) as well as other members of the Rosetta Plasma Consortium (RPC) on board the Rosetta spacecraft (S/C) measured the characteristics of the solar wind almost continuously since its arrival at 67P/Churyumov-Gerasimenko (CG) in 2014 August. An important process at a comet is the so-called pickup process in which a new…

2017 Monthly Notices of the Royal Astronomical Society
Rosetta 4
An eLIMA model for the 67 s X-ray periodicity in CAL 83
DOI: 10.1093/mnras/stx233 Bibcode: 2017MNRAS.467.2797O

Meintjes, P. J.; Odendaal, A.

Supersoft X-ray sources (SSSs) are characterized by their low effective temperatures and high X-ray luminosities. The soft X-ray emission can be explained by hydrogen nuclear burning on the surface of a white dwarf (WD) accreting at an extremely high rate. A peculiar ∼67 s periodicity (P67) was previously discovered in the XMM-Newton li…

2017 Monthly Notices of the Royal Astronomical Society
XMM-Newton 4
Changes in the Martian atmosphere induced by auroral electron precipitation
DOI: 10.1134/S0038094617050094 Bibcode: 2017SoSyR..51..362S

Gérard, J. -C.; Hubert, B.; Shematovich, V. I. +1 more

Typical auroral events in the Martian atmosphere, such as discrete and diffuse auroral emissions detected by UV spectrometers onboard ESA Mars Express and NASA MAVEN, are investigated. Auroral electron kinetic energy distribution functions and energy spectra of the upward and downward electron fluxes are obtained by electron transport calculations…

2017 Solar System Research
ExoMars-16 MEx 4
Strong Lensing Analysis of the Galaxy Cluster MACS J1319.9+7003 and the Discovery of a Shell Galaxy
DOI: 10.3847/1538-4357/834/1/45 Bibcode: 2017ApJ...834...45Z

Zitrin, Adi

We present a strong-lensing (SL) analysis of the galaxy cluster MACS J1319.9+7003 (z = 0.33, also known as Abell 1722), as part of our ongoing effort to analyze massive clusters with archival Hubble Space Telescope (HST) imaging. We spectroscopically measured with Keck/Multi-Object Spectrometer For Infra-Red Exploration (MOSFIRE) two galaxies mult…

2017 The Astrophysical Journal
eHST 4
Young star clusters in circumnuclear starburst rings
DOI: 10.1093/mnras/stw2806 Bibcode: 2017MNRAS.465.2820D

Ho, Luis C.; de Grijs, Richard; Anders, Peter +2 more

We analyse the cluster luminosity functions (CLFs) of the youngest star clusters in two galaxies exhibiting prominent circumnuclear starburst rings. We focus specifically on NGC 1512 and NGC 6951, for which we have access to Hα data that allow us to unambiguously identify the youngest sample clusters. To place our results on a firm statistical foo…

2017 Monthly Notices of the Royal Astronomical Society
eHST 4
Reanalysis of high-resolution XMM-Newton data of V2491 Cygni using models of collisionally ionized hot absorbers
DOI: 10.1051/0004-6361/201629360 Bibcode: 2017A&A...598A.129B

Balman, Ş.; Gamsızkan, Ç.


Aims: We model spectral absorption features in data of the high-resolution XMM-Newton Reflection Grating Spectrometer.
Methods: We performed X-ray spectral analysis and modeling using the SRON software SPEX version 2.05.04.
Results: We present a reanalysis of data obtained with the XMM-Newton Reflection Grating Spectrometer of the c…

2017 Astronomy and Astrophysics
XMM-Newton 4