Science Archives Publication System

Spectral manifestations of extremely strong magnetic fields in the sunspot umbra

DOI: 10.1016/j.asr.2016.11.034 Bibcode: 2017AdSpR..59.1416L

Lozitsky, V. G.

Fine peculiarities of the Zeeman effect in two big sunspots of October 29, 2003, and October 25, 2014, are analyzed. In order to search spectral evidences of very strong spatially unresolved magnetic fields, the Stokes I ± V and V profiles of the Fe I 6301.5 and 6302.5 Å lines are studied in detail. Confirmed are two effects discovered earlier by …

2017 • Advances in Space Research

Hinode 13

Sunward-propagating Solar Energetic Electrons inside Multiple Interplanetary Flux Ropes

DOI: 10.3847/1538-4357/aa6c5c Bibcode: 2017ApJ...840...85G

Temmer, Manuela; Veronig, Astrid; Dresing, Nina +8 more

On 2013 December 2 and 3, the SEPT and STE instruments on board STEREO-A observed two solar energetic electron events with unusual sunward-directed fluxes. Both events occurred during a time interval showing typical signatures of interplanetary coronal mass ejections (ICMEs). The electron timing and anisotropies, combined with extreme-ultraviolet …

2017 • The Astrophysical Journal

SOHO 13

Night side distribution of SO₂ content in Venus' upper mesosphere

DOI: 10.1016/j.icarus.2017.05.002 Bibcode: 2017Icar..294...58B

Montmessin, F.; Bertaux, J. -L.; Fedorova, A. A. +6 more

In this paper we present the first night side distribution of SO₂ content in Venus' upper mesosphere (altitudes from 85 to 105 km). The dataset is based on the SPICAV UV stellar occultation experiment which took place onboard ESA's Venus Express (VEX) orbiter in 2006-2014. The UV channel of SPICAV spectrometer detected absorption bands …

2017 • Icarus

VenusExpress 13

Locating dayside magnetopause reconnection with exhaust ion distributions

DOI: 10.1002/2016JA023590 Bibcode: 2017JGRA..122.5105B

Fuselier, S. A.; Trattner, K. J.; Broll, J. M.

Magnetic reconnection at Earth's dayside magnetopause is essential to magnetospheric dynamics. Determining where reconnection takes place is important to understanding the processes involved, and many questions about reconnection location remain unanswered. We present a method for locating the magnetic reconnection X line at Earth's dayside magnet…

2017 • Journal of Geophysical Research (Space Physics)

Cluster 13

Thermal Structure and Composition

DOI: 10.1017/9781139060172.004 Bibcode: 2017acm..book...20S

Encrenaz, Thérèse; Smith, Michael D.; Bougher, Stephen W. +2 more

2017 • Asteroids, Comets, Meteors - ACM2017

MEx 13

OMEGA - OSIRIS Mapping of Emission-line Galaxies in A901/2 - III. Galaxy properties across projected phase space in A901/2

DOI: 10.1093/mnras/stx1525 Bibcode: 2017MNRAS.471..182W

Chies-Santos, Ana L.; Wolf, Christian; Aragón-Salamanca, Alfonso +6 more

We conduct a comprehensive projected phase-space analysis of the A901/2 multicluster system at z ∼ 0.165. Aggregating redshifts from spectroscopy, tunable-filter imaging and prism techniques, we assemble a sample of 856 cluster galaxies reaching 10^8.5 M_⊙ in stellar mass. We look for variations in cluster galaxy properties bet…

2017 • Monthly Notices of the Royal Astronomical Society

eHST 13

Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer

DOI: 10.3847/1538-4357/aa8cc7 Bibcode: 2017ApJ...848...30W

Pearson, Chris; Clements, David L.; Valtchanov, Ivan +13 more

We present stacked average far-infrared spectra of a sample of 197 dusty star-forming galaxies (DSFGs) at 0.005< z< 4 using about 90% of the Herschel Space Observatory SPIRE Fourier Transform Spectrometer (FTS) extragalactic data archive based on 3.5 years of science operations. These spectra explore an observed-frame 447-1568 GHz frequency …

2017 • The Astrophysical Journal

Herschel 13

Orbiting a binary. SPHERE characterisation of the HD 284149 system

DOI: 10.1051/0004-6361/201731003 Bibcode: 2017A&A...608A.106B

Avenhaus, H.; Fantinel, D.; Messina, S. +53 more

Aims: In this paper we present the results of the SPHERE observation of the HD 284149 system, aimed at a more detailed characterisation of both the primary and its brown dwarf companion.
Methods: We observed HD 284149 in the near-infrared with SPHERE, using the imaging mode (IRDIS+IFS) and the long-s…

2017 • Astronomy and Astrophysics

Gaia Hipparcos 13

A systematic analysis of the XMM-Newton background: I. Dataset and extraction procedures

DOI: 10.1007/s10686-017-9542-5 Bibcode: 2017ExA....44..297M

Tiengo, Andrea; De Luca, Andrea; Marelli, Martino +6 more

XMM-Newton is the direct precursor of the future ESA ATHENA mission. A study of its particle-induced background provides therefore significant insight for the ATHENA mission design. We make use of ∼12 years of data, products from the third XMM-Newton catalog as well as FP7 EXTraS project to avoid celestial sources contamination and to disentangle …

2017 • Experimental Astronomy

XMM-Newton 13

Detection of Extraplanar Diffuse Ionized Gas in M83

DOI: 10.3847/1538-4357/aa81ca Bibcode: 2017ApJ...845..155B

Gallagher, J. S., III; Boettcher, Erin; Zweibel, Ellen G.

We present the first kinematic study of extraplanar diffuse ionized gas (eDIG) in the nearby, face-on disk galaxy M83 using optical emission-line spectroscopy from the Robert Stobie Spectrograph on the Southern African Large Telescope. We use a Markov Chain Monte Carlo method to decompose the [N II]λ λ 6548, 6583, Hα, and [S II]λ λ 6717, 6731 emis…

2017 • The Astrophysical Journal

eHST 13