Search Publications
Quiet Sun Explosive Events: Jets, Splashes, and Eruptions
Innes, D. E.; Teriaca, L.
Explosive events appear as broad non-Gaussian wings in the line profiles of small transition-region phenomena. Images from the Solar Dynamics Observatory (SDO) give a first view of the plasma dynamics at the sites of explosive events seen simultaneously in O VI spectra of a region of quiet Sun, taken with the ultraviolet spectrometer Solar Ultravi…
Low-Resolution Spectrum of the Diffuse Galactic Light and 3.3µm PAH Emission with the AKARI InfraRed Camera
Sakon, Itsuki; Matsuura, Shuji; Wada, Takehiko +3 more
We first obtained the spectrum of the diffuse Galactic light (DGL) at general interstellar space in the
Very deep spectroscopy of the bright Saturn nebula NGC 7009 - II. Analysis of the rich optical recombination spectrum
Liu, X. -W.; Fang, X.
In Paper I, we presented a deep, long-slit spectrum of the bright Saturn nebula NGC 7009. Numerous permitted lines emitted by the C+, N+, O+ and Ne+ ions were detected. Gaussian profile fitting to the spectrum yielded more than 1000 lines, the majority of which are optical recombination lines (ORLs) of h…
Starburst and old stellar populations in the z ≃ 3.8 radio galaxies 4C 41.17 and TN J2007-1316
Seymour, N.; Nesvadba, N.; De Breuck, C. +6 more
Using the new evolutionary code PÉGASE.3, we undertook an evolutionary spectral synthesis of the optical-IR-submm spectral energy distribution of two distant (z = 3.8) radio galaxies, 4C 41.17 and TN J2007-1316. These two radio galaxies were selected from the HeRGÉ (Herschel Radio Galaxies Evolution) Project in particular for their faint active ga…
Model-free Multi-probe Lensing Reconstruction of Cluster Mass Profiles
Umetsu, Keiichi
Lens magnification by galaxy clusters induces characteristic spatial variations in the number counts of background sources, amplifying their observed fluxes and expanding the area of sky, the net effect of which, known as magnification bias, depends on the intrinsic faint-end slope of the source luminosity function. The bias is strongly negative f…
XMM-Newton and Swift spectroscopy of the newly discovered very faint X-ray transient IGR J17494-3030.
Degenaar, N.; Wijnands, R.; Armas Padilla, M.
A growing group of low-mass X-ray binaries are found to be accreting at very faint X-ray luminosities of <1036 erg s-1 (2-10 keV). One such system is the new X-ray transient IGR J17494-3030. We present Swift and XMM-Newton observations obtained during its 2012 discovery outburst. The Swift observations trace the peak of th…
UVCS/SOHO catalog of coronal mass ejections from 1996 to 2005: Spectroscopic proprieties
Raymond, J. C.; Ciaravella, A.; Giordano, S. +2 more
Ultraviolet spectra of the extended solar corona have been routinely obtained by SOHO/UltraViolet Coronagraph Spectrometer (UVCS) since 1996. Sudden variations of spectral parameters are mainly due to the detection of coronal mass ejections (CMEs) crossing the instrumental slit. We present a catalog of CME ultraviolet spectra based upon a systemat…
HST/ACS Imaging of Omega Centauri: Optical Counterparts of Chandra X-Ray Sources
Anderson, Jay; Cool, Adrienne M.; Haggard, Daryl +5 more
We present results of a search for optical counterparts of X-ray sources in and toward the globular cluster Omega Centauri (NGC 5139) using the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope. The ACS data consist of a mosaic of Wide Field Channel images obtained using F625W, F435W, and F658N filters; with nine pointings we cover t…
Luminosities of carbon-rich asymptotic giant branch stars in the Milky Way
Cristallo, S.; Guandalini, R.
Context. Stars evolving along the asymptotic giant branch can become carbon-rich in the final part of their evolution. They replenish the inter-stellar medium with nuclear processed material via strong radiative stellar winds. The determination of the luminosity function of these stars, even if far from being conclusive, is extremely important for…
Herschel-ATLAS: correlations between dust and gas in local submm-selected galaxies
Ivison, R. J.; de Zotti, G.; Cooray, A. +21 more
We present an analysis of CO molecular gas tracers in a sample of 500 µm-selected Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) galaxies at z < 0.05 (cz < 14990 km s-1). Using 22-500 µm photometry from Wide-Field Infrared Survey Explorer, Infrared Astronomical Satellite and Herschel, with H I data from t…