Search Publications
Searching for Far-ultraviolet Auroral/Dayglow Emission from HD 209458b
France, Kevin; Stocke, John T.; Wolven, Brian C. +5 more
We present recent observations from the Hubble Space Telescope-Cosmic Origins Spectrograph aimed at characterizing the auroral emission from the extrasolar planet HD 209458b. We obtained medium-resolution (R ~ 20,000) far-ultraviolet (1150-1700 Å) spectra at both the Phase 0.25 and Phase 0.75 quadrature positions as well as a stellar baseline meas…
Temporal Power Spectra of the Horizontal Velocity of the Solar Photosphere
Matsumoto, Takuma; Kitai, Reizaburo
We have derived the temporal power spectra of the horizontal velocity of the solar photosphere. The data sets for 14 quiet regions observed with the G-band filter of Hinode/SOT are analyzed to measure the temporal fluctuation of the horizontal velocity by using the local correlation tracking (LCT) method. Among the high resolution (~0farcs2) and s…
Dust in the Diffuse Emission of the Galactic Plane: The Herschel/Spitzer Spectral Energy Distribution Fitting
Bernard, J. -P.; Martin, P. G.; Paladini, R. +4 more
The first Herschel Hi-Gal images of the Galactic plane unveil the far-infrared diffuse emission of the interstellar medium with an unprecedented angular resolution and sensitivity. In this Letter, we present the first analysis of these data in combination with those of Spitzer GLIMPSE and MIPSGAL. We selected a relatively diffuse and low excitatio…
Stratigraphy of hydrated sulfates in the sedimentary deposits of Aram Chaos, Mars
Murchie, Scott L.; Mustard, John F.; Arvidson, Raymond E. +8 more
Sedimentary deposits within the 280 km wide crater containing Aram Chaos (∼3°N, 339°E) have been differentially eroded by wind to expose a stratigraphic column 900-1000 m thick that unconformably overlies the chaos bedrock. A detailed stratigraphic and mineralogical description of the deposits is presented based on data from the Mars Reconnaissanc…
X-ray Emission from the Binary Central Stars of the Planetary Nebulae HFG 1, DS 1, and LoTr 5
De Marco, Orsola; Kastner, Joel H.; Chu, You-Hua +1 more
Close binary systems undergoing mass transfer or common envelope interactions can account for the morphological properties of some planetary nebulae. The search for close binary companions in planetary nebulae is hindered by the difficulty of detecting cool, late-type, main-sequence companions in binary systems with hot pre-white-dwarf primaries. …
Polycyclic aromatic hydrocarbon (PAH) luminous galaxies at z ~ 1
Im, M.; Lee, H. M.; White, G. J. +14 more
Aims: The NEP-deep survey, an extragalactic AKARI survey towards the north ecliptic pole (NEP), provides a comprehensive wavelength coverage from 2 to 24 µm using all 9 photometric bands of the infrared camera (IRC). It allows us to photometrically identify galaxies whose mid-IR emission is clearly dominated by PAHs.
Methods: We pr…
Strong CH+ J = 1-0 emission and absorption in DR21
Boulanger, F.; Falgarone, E.; Godard, B. +30 more
We report the first detection of the ground-state rotational transition of the methylidyne cation CH+ towards the massive star-forming region DR 21 with the HIFI instrument onboard the Herschel satellite. The line profile exhibits a broad emission line, in addition to two deep and broad absorption features associated with the DR 21 mole…
Herschel-PACS spectroscopy of IR-bright galaxies at high redshift
Lutz, D.; Genzel, R.; Poglitsch, A. +11 more
We present Herschel-PACS observations of rest-frame mid-infrared and far-infrared spectral line emissions from two lensed, ultra-luminous infrared galaxies at high redshift: MIPS J142824.0+352619 (MIPS J1428), a starburst-dominated system at z = 1.3, and IRAS F10214+4724 (F10214), a source at z = 2.3 hosting both star-formation and a luminous AGN.…
Distribution and evolution of scalloped terrain in the southern hemisphere, Mars
Reiss, Dennis; Neukum, Gerhard; Hauber, Ernst +2 more
Scalloped depressions are a unique martian surface morphology found in the northern and southern hemisphere latitude-dependent dust and ice-rich surface mantles. These features exhibit a distinct asymmetric north-south slope profile, characterized by steep pole-facing scarps, flat floors and gentle equator-facing slopes. We examined High Resolutio…
Abundances of Jupiter's trace hydrocarbons from Voyager and Cassini
Zhang, X.; Irwin, P. G. J.; Teanby, N. A. +5 more
The flybys of Jupiter by the Voyager spacecraft in 1979, and over two decades later by Cassini in 2000, have provided us with unique datasets from two different epochs, allowing the investigation of seasonal change in the atmosphere. In this paper we model zonal averages of thermal infrared spectra from the two instruments, Voyager 1 IRIS and Cass…