Search Publications
The A2667 Giant Arc at z = 1.03: Evidence for Large-Scale Shocks at High Redshift
Swinbank, A. M.; Richard, J.; Yuan, T. -T. +1 more
We present the spatially resolved emission line ratio properties of a ~1010 M ⊙ star-forming galaxy at redshift z = 1.03. This galaxy is gravitationally lensed as a triple-image giant arc behind the massive lensing cluster A2667. The main image of the galaxy has magnification factors of 14 ± 2.1 in flux and ~2 × 7 in area, yi…
CANDELS: Correlations of Spectral Energy Distributions and Morphologies with Star formation Status for Massive Galaxies at z ~ 2
Ferguson, Henry C.; Hathi, Nimish P.; Lucas, Ray A. +17 more
We present a study on spectral energy distributions, morphologies, and star formation for an IRAC-selected extremely red object sample in the GOODS Chandra Deep Field-South. This work was enabled by new HST/WFC3 near-IR imaging from the CANDELS survey as well as the deepest available X-ray data from Chandra 4 Ms observations. This sample consists …
High-resolution X-Ray Spectroscopy of the Galactic Supernova Remnant Puppis A with XMM-Newton/RGS
Katsuda, Satoru; Petre, Robert; Uchida, Hiroyuki +6 more
We present high-resolution X-ray spectra of cloud-shock interaction regions in the eastern and northern rims of the Galactic supernova remnant Puppis A, using the Reflection Grating Spectrometer on board the XMM-Newton satellite. A number of emission lines including Kα triplets of He-like N, O, and Ne are clearly resolved for the first time. Inten…
Buildup and Release of Magnetic Twist during the X3.4 Solar Flare of 2006 December 13
Choe, G. S.; Shiota, D.; Inoue, S. +3 more
We analyze the temporal evolution of the three-dimensional magnetic structure of the flaring active region (AR) NOAA 10930 by using the nonlinear force-free fields extrapolated from the photospheric vector magnetic fields observed by the Solar Optical Telescope on board Hinode. This AR consisted mainly of two types of twisted magnetic field lines:…
A Study of Heating and Cooling of the ISM in NGC 1097 with Herschel-PACS and Spitzer-IRS
Helou, G.; Roussel, H.; Murphy, E. J. +38 more
NGC 1097 is a nearby Seyfert 1 galaxy with a bright circumnuclear starburst ring, a strong large-scale bar, and an active nucleus. We present a detailed study of the spatial variation of the far-infrared (FIR) [C II]158 µm and [O I]63 µm lines and mid-infrared H2 emission lines as tracers of gas cooling, and of the polycycli…
Detection of Flux Emergence, Splitting, Merging, and Cancellation of Network Field. I. Splitting and Merging
Hagenaar, H. J.; Iida, Y.; Yokoyama, T.
Frequencies of magnetic patch processes on the supergranule boundary, namely, flux emergence, splitting, merging, and cancellation, are investigated through automatic detection. We use a set of line-of-sight magnetograms taken by the Solar Optical Telescope (SOT) on board the Hinode satellite. We found 1636 positive patches and 1637 negative patch…
AKARI Near-infrared Spectroscopy of Luminous Infrared Galaxies
Lee, Myung Gyoon; Lee, Jong Chul; Hwang, Ho Seong +2 more
We present the AKARI near-infrared (NIR; 2.5-5 µm) spectroscopic study of 36 (ultra)luminous infrared galaxies ((U)LIRGs) at z = 0.01-0.4. We measure the NIR spectral features including the strengths of 3.3 µm polycyclic aromatic hydrocarbon emission and hydrogen recombination lines (Brα and Brβ), optical depths at 3.1 and 3.4 µm…
Constraints on the Faint End of the Quasar Luminosity Function at z ~ 5 in the COSMOS Field
Taniguchi, Y.; Salvato, M.; Morokuma, T. +12 more
We present the result of our low-luminosity quasar survey in the redshift range of 4.5 <~ z <~ 5.5 in the COSMOS field. Using the COSMOS photometric catalog, we selected 15 quasar candidates with 22 < i' < 24 at z ~ 5 that are ~3 mag fainter than the Sloan Digital Sky Survey quasars in the same redshift range. We obtained optical spect…
The ElIXr Galaxy Survey. II. Baryons and Dark Matter in an Isolated Elliptical Galaxy
Humphrey, Philip J.; Buote, David A.; Ponman, Trevor J. +1 more
The Elliptical Isolated X-ray (ElIXr) Galaxy Survey is a volume-limited (<110 Mpc) study of optically selected, isolated, L * elliptical galaxies to provide an X-ray census of galaxy-scale (virial mass, M vir <~ 1013 M ⊙) objects and identify candidates for detailed hydrostatic mass modeling. In th…
Far-IR/Submillimeter Spectroscopic Cosmological Surveys: Predictions of Infrared Line Luminosity Functions for z < 4 Galaxies
Spinoglio, Luigi; Franceschini, Alberto; Gruppioni, Carlotta +3 more
Star formation and accretion onto supermassive black holes in the nuclei of galaxies are the two most energetic processes in the universe, producing the bulk of the observed emission throughout its history. We simulated the luminosity functions of star-forming and active galaxies for spectral lines that are thought to be good spectroscopic tracers…