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Supernova 2010as: The Lowest-velocity Member of a Family of Flat-velocity Type IIb Supernovae
Morrell, Nidia; Nomoto, Ken'ichi; Phillips, Mark M. +23 more
We present extensive optical and near-infrared photometric and spectroscopic observations of the stripped-envelope supernova SN 2010as. Spectroscopic peculiarities such as initially weak helium features and low expansion velocities with a nearly flat evolution place this object in the small family of events previously identified as transitional Ty…
Mapping the electron energy in Jupiter's aurora: Hubble spectral observations
Bonfond, B.; Clarke, J. T.; Waite, J. H. +6 more
Far ultraviolet spectral observations have been made with the Hubble Space Telescope in the time-tag mode using the Space Telescope Imaging Spectrograph (STIS) long slit. The telescope was slewed in such a way that the slit projection scanned from above the polar limb down to midlatitudes, allowing us to build up the first spectral maps of the FUV…
Planck 2013 results. III. LFI systematic uncertainties
Bernard, J. -P.; Planck Collaboration; Aghanim, N. +218 more
We present the current estimate of instrumental and systematic effect uncertainties for the Planck-Low Frequency Instrument relevant to the first release of the Planck cosmological results. We give an overview of the main effects and of the tools and methods applied to assess residuals in maps and power spectra. We also present an overall budget o…
A resolved analysis of cold dust and gas in the nearby edge-on spiral NGC 891
Clements, D. L.; Boquien, M.; Bianchi, S. +18 more
We investigate the connection between dust and gas in the nearby edge-on spiral galaxy NGC 891, a target of the Very Nearby Galaxies Survey. High resolution Herschel PACS and SPIRE 70, 100, 160, 250, 350, and 500 µm images are combined with JCMT SCUBA 850 µm observations to trace the far-infrared/submillimetre spectral energy distribut…
Fast and Furious: Shock Heated Gas as the Origin of Spatially Resolved Hard X-Ray Emission in the Central 5 kpc of the Galaxy Merger NGC 6240
Elvis, Martin; Zezas, Andreas; Risaliti, Guido +7 more
We have obtained a deep, subarcsecond resolution X-ray image of the nuclear region of the luminous galaxy merger NGC 6240 with Chandra, which resolves the X-ray emission from the pair of active nuclei and the diffuse hot gas in great detail. We detect extended hard X-ray emission from kT ~ 6 keV (~70 MK) hot gas over a spatial scale of 5 kpc, indi…
C/O Abundance Ratios, Iron Depletions, and Infrared Dust Features in Galactic Planetary Nebulae
Delgado-Inglada, Gloria; Rodríguez, Mónica
We study the dust present in 56 Galactic planetary nebulae (PNe) through their iron depletion factors, their C/O abundance ratios (in 51 objects), and the dust features that appear in their infrared spectra (for 33 objects). Our sample objects have deep optical spectra of good quality, and most of them also have ultraviolet observations. We use th…
The age distribution of stellar clusters in M83.
Fouesneau, M.; Bastian, N.; Adamo, A. +2 more
In order to empirically determine the time-scale and environmental dependence of stellar cluster disruption, we have undertaken an analysis of the unprecedented multipointing (seven), multiwavelength (U, B, V, Hα, and I) Hubble Space Telescope imaging survey of the nearby, face-on spiral galaxy M83. The images are used to locate stellar clusters a…
The temperature dependence of the far-infrared-radio correlation in the Herschel-ATLAS
de Zotti, G.; Ibar, E.; Vaccari, M. +12 more
We use 10 387 galaxies from the Herschel Astrophysical TeraHertz Large Area Survey (H-ATLAS) to probe the far-infrared radio correlation (FIRC) of star-forming galaxies as a function of redshift, wavelength, and effective dust temperature. All of the sources in our 250 µm-selected sample have spectroscopic redshifts, as well as 1.4 GHz flux …
Infrared Spectra and Photometry Of Complete Samples of Palomar-Green and Two Micron All Sky Survey Quasars
Balog, Z.; Rieke, G. H.; Shi, Yong +2 more
As a step toward a comprehensive overview of the infrared (IR) diagnostics of the central engines and host galaxies of quasars at low redshift, we present Spitzer Space Telescope spectroscopic (5-40 µm) and photometric (24, 70, and 160 µm) measurements of all Palomar-Green (PG) quasars at z < 0.5 and Two Micron All Sky Survey (2MASS…
Titan solar occultation observations reveal transit spectra of a hazy world
Fortney, Jonathan J.; Maltagliati, Luca; Marley, Mark S. +1 more
High altitude clouds and hazes are integral to understanding exoplanet observations, and are proposed to explain observed featureless transit spectra. However, it is difficult to make inferences from these data because of the need to disentangle effects of gas absorption from haze extinction. Here, we turn to the quintessential hazy world -- Titan…