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The X-ray spectrum of RX J1914.4+2456 revisited
Ramsay, Gavin
It has been proposed that RX J1914.4+2456 is a stellar binary system with an orbital period of 9.5 min. As such it shares many similar properties with RX J0806.3+1527 (5.4 min). However, while the X-ray spectrum of RX J0806.3+1527 can be modelled using a simple absorbed blackbody, the X-ray spectrum of RX J1914.4+2456 has proved difficult to fit u…
The XMM-Newton X-Ray Emission of the Supernova Remnant N 120 in the Large Magellanic Cloud
Rosado, Margarita; Reyes-Iturbide, Jorge; Velázquez, Pablo F.
We present new XMM-Newton observations of the supernova remnant (SNR) N 120 in the Large Magellanic Cloud, and numerical simulations on the evolution of this SNR which we compare with the X-ray observations. The SNR N 120, together with several H II regions, forms a large nebular complex (also called N 120) whose shape resembles a semicircular rin…
Line Intensity Ratios in the EIS Range Sensitive to Electron Densities in 107 K Plasmas
Landi, E.; Doschek, G. A.; Feldman, U.
Electron density variations during the rise, maximum, and decay phases of flaring plasmas at T simeq 10 MK are important quantities to be used to test flare models. To date, electron density values measured in solar flares are, with few exceptions, only lower limits. With the launch of the EUV Imaging Spectrometer (EIS) on Hinode, it has become po…
A review of penetrometers for subsurface access on comets and asteroids
Ball, Andrew J.; Glaser, David L.; Zacny, Kris A.
The characterization of comet and asteroid interiors will eventually require in situ exploration with drills, penetrators/penetrometers, hypervelocity impactors, excavators or other devices. Because they offer desirable scientific capabilities and relative mechanical simplicity, penetrators and penetrometers, which use only axial force to push ben…
Optical Selection of Faint Active Galactic Nuclei in the COSMOS Field
Brusa, M.; Capak, P.; Schinnerer, E. +6 more
We outline a strategy to select faint (iAB < 24.5) type 1 active galactic nucleus (AGN) candidates down to the Seyfert/QSO boundary for spectroscopic targeting in the COSMOS field. Our selection process picks candidates by their nonstellar colors in uBVRizK broadband photometry from the Subaru and CFH Telescopes and morphological pro…
Color, 3D simulated images with shapelets
Mobasher, Bahram; Massey, Richard; Rhodes, Jason +3 more
We present a method to simulate color, 3-dimensional images taken with a space-based observatory by building off of the established shapelets pipeline. The simulated galaxies exhibit complex morphologies, which are realistically correlated between, and include, known redshifts. The simulations are created using galaxies from the 4 optical and near…
Detection of a hot intergalactic medium in the spiral-only compact group SCG0018-4854
Reeves, J.; Trinchieri, G.; Iovino, A. +4 more
Aims: Compact groups of galaxies are excellent laboratories for studying galaxy interactions and their effects on the evolution of galaxies. In particular, dynamically young systems, with a large fraction of interacting, late type galaxies, have so far escaped proper studies in the X-ray band and their hot intergalactic medium properties are virtu…
Release of N 2, CH 4, CO 2, and H 2O from surface ices on Enceladus
Hodyss, Robert; Goguen, Jay D.; Johnson, Paul V. +2 more
We vapor deposit at 20 K a mixture of gases with the specific Enceladus plume composition measured in situ by the Cassini INMS [Waite, J.H., Combi, M.R., Ip, W.H., Cravens, T.E., McNutt, R.L., Kasprzak, W., Yelle, R., Luhmann, J., Niemann, H., Gell, D., Magee, B., Fletcher, G., Lunine, J., Tseng, W.L., 2006. Science 311, 1419-1422] to form a mixed…
Near-Infrared Coronagraphic Observations of a Classical TTauri Star, DO Taurus
Tamura, Motohide; Hayashi, Masahiko; Kudo, Tomoyuki +4 more
A high angular resolution near-infrared image of a classical TTauri star, DO Tau, was obtained with Coronagraphic Imager with Adaptive Optics (CIAO) mounted on the Subaru Telescope. Circumstellar emission was detected at ∼1".7 from the central star in the direction of the redshifted jet. No emission was found toward the opposite direction. We also…
High-Resolution X-Ray Imaging of the Center of IC 342
Mak, Daisy S. Y.; Pun, Chun S. J.; Kong, Albert K. H.
We present the results of a high-resolution (θFWHM ~ 0.5'') 12 ks Chandra HRC-I observation of the starburst galaxy IC 342 taken on 2006 April 2. We identify 23 X-ray sources within the central 30' × 30' region of IC 342 and resolve the historical ultraluminous X-ray source (ULX), X3, near the nucleus into two sources, namely, C12 and C…