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HATS-39b, HATS-40b, HATS-41b, and HATS-42b: three inflated hot Jupiters and a super-Jupiter transiting F stars
Henning, T.; Mancini, L.; Rabus, M. +22 more
We report the discovery of four transiting hot Jupiters from the HATSouth survey: HATS-39b, HATS-40b, HATS-41b, and HATS-42b. These discoveries add to the growing number of transiting planets orbiting moderately bright (12.5 ≲ V ≲ 13.7) F dwarf stars on short (2-5 d) periods. The planets have similar radii, ranging from 1.33^{+0.29}_{-0.20} R…
Statistical Planetary Period Oscillation Signatures in Saturn's UV Auroral Intensity
Badman, S. V.; Cowley, S. W. H.; Provan, G. +3 more
Saturn's auroral emissions are a good measure of field-aligned current (FAC) systems in the planet's magnetospheric environment. Previous studies based on magnetic field data have identified current systems rotating with the planetary period oscillations (PPOs) in both hemispheres, superimposed onto the local time-invariant current system producin…
Identification of high-mass X-ray binaries selected from XMM-Newton observations of the LMC★
Haberl, F.; Udalski, A.; McBride, V. A. +5 more
The Large Magellanic Cloud (LMC) currently hosts around 23 high-mass X-ray binaries (HMXBs) of which most are Be/X-ray binaries. The LMC XMM-Newton survey provided follow-up observations of previously known X-ray sources that were likely HMXBs, as well as identifying new HMXB candidates. In total, 19 candidate HMXBs were selected based on their X-…
Medium-resolution Optical and Near-infrared Spectral Atlas of 16 2MASS-selected NIR-red Active Galactic Nuclei at z ∼ 0.3
Im, Myungshin; Kim, Minjin; Kim, Jae-Woo +6 more
We present medium-resolution spectra (R ∼ 2000-4000) at 0.4-1.0 µm and 0.7-2.5 µm of 16 active galactic nuclei (AGNs) selected with red color in the near-infrared (NIR) of J - K > 2.0 mag at z ∼ 0.3. We fit the Hβ, Hα, Pβ, and Pα lines from these spectra to obtain their luminosities and line widths. We derive the E(B - V) color exce…
Discovery of recombining plasma from the faintest GeV supernova remnant HB 21 and a possible scenario for cosmic rays escaping from supernova remnant shocks
Nakazawa, Kazuhiro; Koyama, Katsuji; Bamba, Aya +4 more
We present an X-ray study of the GeV gamma-ray supernova remnant (SNR) HB 21 with Suzaku. HB 21 is interacting with molecular clouds, and is the faintest in the GeV band among known GeV SNRs. We discovered strong radiative recombination continua of Si and S from the center of the remnant, which provide direct evidence of a recombining plasma (RP).…
Precipitation of Hydrogen Energetic Neutral Atoms at the Upper Atmosphere of Mars
Kallio, E.; Barabash, S.; Futaana, Y. +3 more
We study the properties of neutral hydrogen atoms precipitating onto the upper atmosphere of Mars. Energetic neutral atoms (ENAs) are produced by the charge exchange process between protons of solar wind (both upstream and shocked) as well as planetary origins and the Martian exospheric neutrals. Using a global hybrid plasma model for Mars-solar w…
Models of the Mass-ejection Histories of Pre-planetary Nebulae. II. The Formation of Minkowski’s Butterfly and its Proboscis in M2-9
Frank, Adam; Balick, Bruce; Liu, Baowei +1 more
M2-9, or the “Minkowski’s Butterfly,” is one of the most iconic outflow sources from an evolved star. In this paper we present a hydrodynamic model of M2-9 in which the nebula is formed and shaped by a steady, low-density (“light”), mildly collimated “spray” of gas injected at 200 km s-1 that interacts with a far denser, intrinsically s…
Spectral and stratigraphic mapping of hydrated minerals associated with interior layered deposits near the southern wall of Melas Chasma, Mars
Liu, Yang; Goudge, Timothy A.; Wang, Alian +1 more
Orbital remote sensing data acquired from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) onboard Mars Reconnaissance Orbiter (MRO), in conjunction with other datasets, are used to perform detailed spectral and stratigraphic analyses over a portion of south Melas Chasma, Mars. The Discrete Ordinate Radiative Transfer (DISORT) mode…
Circulation of Venusian Atmosphere at 90-110 km Based on Apparent Motions of the O2 1.27 µm Nightglow From VIRTIS-M (Venus Express) Data
Piccioni, G.; Zasova, L. V.; Khatuntsev, I. V. +2 more
The paper is devoted to the investigation of Venus mesosphere circulation at 90-110 km altitudes, where tracking of the O2(a1Δg) 1.27 µm nightglow is practically the only method of studying the circulation. The images of the nightglow were obtained by VIRTIS-M on Venus Express over the course of more than 2 y…
Imaging Spectroscopy of Ionized Gaseous Nebulae around Optically Faint AGNs at Redshift z ∼ 2
Steidel, Charles C.; Law, David R.; Rudie, Gwen C. +3 more
We present Keck/OSIRIS laser guide-star assisted adaptive optics (LGSAO) integral-field spectroscopy of [O III] λ5007 nebular emission from 12 galaxies hosting optically faint ({ \mathcal R } = 20-25 ν {L}ν ∼ {10}44-{10}46 erg s-1) active galactic nuclei (AGNs) at redshift z ∼ 2-3. In combination with de…