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Extended X-Ray Emission from a Quasar-driven Superbubble
Greene, Jenny E.; Zakamska, Nadia L.; Comerford, Julia M. +2 more
We present observations of extended, 20 kpc scale soft X-ray gas around a luminous obscured quasar hosted by an ultraluminous infrared galaxy caught in the midst of a major merger. The extended X-ray emission is well fit as a thermal gas with a temperature of kT ≈280 eV and a luminosity of L X ≈ 1042 erg s-1 and is…
Extreme Gas Fractions in Clumpy, Turbulent Disk Galaxies at z ~ 0.1
Glazebrook, Karl; Obreschkow, Danail; Abraham, Roberto G. +8 more
In this Letter, we report the discovery of CO fluxes, suggesting very high gas fractions in three disk galaxies seen in the nearby universe (z ~ 0.1). These galaxies were investigated as part of the DYnamics of Newly Assembled Massive Objects (DYNAMO) survey. High-resolution Hubble Space Telescope imaging of these objects reveals the presence of l…
Volatile-rich Circumstellar Gas in the Unusual 49 Ceti Debris Disk
Weinberger, Alycia J.; Roberge, Aki; Grady, Carol A. +2 more
We present Hubble Space Telescope Space Telescope Imaging Spectrograph far-UV spectra of the edge-on disk around 49 Ceti, one of the very few debris disks showing submillimeter CO emission. Many atomic absorption lines are present in the spectra, most of which arise from circumstellar gas lying along the line-of-sight to the central star. We deter…
Effects of a strong ICME on the Martian ionosphere as detected by Mars Express and Mars Odyssey
Gurnett, D. A.; Mitrofanov, I.; Fränz, M. +8 more
We present evidence of a substantial ionospheric response to a strong interplanetary coronal mass ejection (ICME) detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) on board the Mars Express (MEX) spacecraft. A powerful ICME impacted the Martian ionosphere beginning on 5 June 2011, peaking on 6 June, and trailing o…
Detection of Neutral Phosphorus in the Near-ultraviolet Spectra of Late-type Stars
Roederer, Ian U.; Frebel, Anna; Toller, Elizabeth +2 more
We report the detection of several absorption lines of neutral phosphorus (P, Z = 15) in archival near-ultraviolet spectra obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. We derive phosphorus abundances or interesting upper limits in 14 late-type stars with metallicities spanning -3.8 < [Fe/H] <-0.…
Very Fast and Accurate Azimuth Disambiguation of Vector Magnetograms
Anfinogentov, S. A.; Rudenko, G. V.
We present a method for fast and accurate azimuth disambiguation of vector magnetogram data regardless of the location of the analyzed region on the solar disk. The direction of the transverse field is determined with the principle of minimum deviation of the field from the reference (potential) field. The new disambiguation (NDA) code is examined…
Cumulative luminosity distributions of supergiant fast X-ray transients in hard X-rays
Sidoli, L.; Paizis, A.
We have analysed in a systematic way about nine years of INTEGRAL data (17-100 keV) focusing on supergiant fast X-ray transients (SFXTs) and three classical high-mass X-ray binaries (HMXBs). Our approach has been twofold: image-based analysis, sampled over a ∼ks time frame to investigate the long-term properties of the sources and light-curve-base…
Spectral Modeling of the Charge-exchange X-Ray Emission from M82
Zhou, Xin; Wang, Q. Daniel; Foster, Adam R. +3 more
It has been proposed that the charge-exchange (CX) process at the interface between hot and cool interstellar gases could contribute significantly to the observed soft X-ray emission in star-forming galaxies. We analyze the XMM-Newton/reflection grating spectrometer (RGS) spectrum of M82 using a newly developed CX model combined with a single-temp…
No excess of bright galaxies around the redshift 7.1 quasar ULAS J1120+0641
Simpson, Chris; Cantalupo, Sebastiano; Venemans, Bram +5 more
We present optical and near-infrared imaging of the field of the z = 7.0842 quasar ULAS J112001.48+064124.3 taken with the Hubble Space Telescope. We use these data to search for galaxies that may be physically associated with the quasar, using the Lyman break technique, and find three such objects, although the detection of one in Spitzer Space T…
Hidden starbursts and active galactic nuclei at 0 < z < 4 from the Herschel-VVDS-CFHTLS-D1 field: Inferences on coevolution and feedback
Le Floc'h, E.; Ilbert, O.; Zamorani, G. +12 more
We investigate of the properties of ~2000 Herschel/SPIRE far-infrared-selected galaxies from 0 <z< 4 in the CFHTLS-D1 field. Using a combination of extensive spectroscopy from the VVDS and ORELSE surveys, deep multiwavelength imaging from CFHT, VLA, Spitzer, XMM-Newton, and Herschel, and well-calibrated spectral energy distribution fitting, …