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Gas and dust in a submillimeter galaxy at z = 4.24 from the Herschel ATLAS
submillimeter galaxy Herschel ATLAS
2011/10/9
We report ground-based follow-up observations of the exceptional source, ID141, one the brightest sources detected so far in the H-ATLAS cosmological survey. ID141 was observed using the IRAM 30-meter...
GOODS-Herschel Measurements of the Dust Attenuation of Typical Star-Forming Galaxies at High Redshift: Observations of UV-Selected Galaxies at z~2
Dust Attenuation Typical Star-Forming Galaxies High Redshift: Observations Galaxies
2011/10/9
We take advantage of the sensitivity and resolution of Herschel at 100 and 160 micron to directly image the thermal dust emission and investigate the infrared luminosities, L(IR), and dust obscuration...
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081
galaxies: active – galaxies: nuclei – galaxies: imaging – galaxies: indi-vidual
2011/10/8
We report far-infrared (FIR) imaging of the Seyfert 2 galaxy NGC 3081 in the range 70-500 micron, obtained with an unprecedented angular resolution, using the Herschel Space Observatory instruments PA...
Searching for Saturn's Dust Swarm: Limits on the size distribution of Irregular Satellites from km to micron sizes
Solar System: satellites
2011/10/8
We describe a search for dust created in collisions between the Saturnian irregular satellites using archival \emph{Spitzer} MIPS observations. Although we detected a degree scale Saturn-centric exces...
Near-infrared thermal emissivity from ground based atmospheric dust measurements at ORM
Site testing – Methods: data analysis – Methods: statistical
2011/9/30
We present an analysis of the atmospheric content of aerosols measured at Observatorio del Roque de los Muchachos (ORM; Canary Islands). Using a laser diode particle counter located at the Telescopio ...
Effect of Dust on Lyman-alpha Photon Transfer in Optically Thick Halo
Effect Photon Transfe Optically Thick
2011/9/30
We investigate the effects of dust on Ly{\alpha} photons emergent from an optically thick medium by solving the integro-differential equation of the radiative transfer of resonant photons. To solve th...
Dust around R Coronae Borealis stars: I. Spitzer/IRS observations
Dust around Borealis stars:observations
2011/9/29
Spitzer/IRS spectra from 5 to 37 um for a complete sample of 31 R Coronae Borealis stars (RCBs) are presented. These spectra are combined with optical and near-infrared photometry of each RCB at maxim...
Mid-infrared interferometric monitoring of evolved stars - The dust shell around the Mira variable RR Aql at 13 epochs
Techniques:interferometric – Stars:AGB – Stars:atmospheres – Stars:mass loss – Stars:individual:RR Aql
2011/9/28
We obtained 13 epochs of mid-infrared interferometry with the MIDI instrument at the VLTI between April 2004 and July 2007, covering pulsation phases 0.45-0.85 within four cycles. The data are modeled...
OH Masers and the Dust Emissions Towards High Mass Protostellar Objects
stars: formation masers: OH masers millimeter
2011/9/27
Context: OH maser emission is known to be associated with high mass star forming regions. Towards some of these regions, OH masers are associated with HII regions. Towards others, believed to be in an...
The Absence of Cold Dust and the Mineralogy and Origin of the Warm Dust Encircling BD +20 307
Cold Dust the Mineralogy the Warm Dust Encircling
2011/1/13
Spitzer Space Telescope photometry and spectroscopy of BD +20 307 show that all of the dust around this remarkable Gyr-old spectroscopic binary arises within 1 AU. No additional cold dust is needed to...
On the redshift-evolution of the Lyman-alpha escape fraction and the dust content of galaxies
the redshift-evolution the Lyman-alpha escape fraction
2011/1/10
The Ly-alpha emission line has been proven a powerful tool by which to study evolving galaxies at the highest redshifts. However, in order to use Lya as a physical probe of galaxies, it becomes vital ...
Galactic cirrus emission at far-infrared wavelengths affects many extragalactic observations. Separating this emission from that associated with extragalactic objects is both important and difficult. ...
Metallicities and dust content of proximate damped Lyman alpha systems in the Sloan Digital Sky Survey
Metallicities dust content proximate damped Lyman alpha systems
2011/1/11
Composite spectra of 85 proximate absorbers (log N(HI)>20 and velocity difference between the absorption and emission redshift, dv<10,000 km/s) in the SDSS are used to investigate the trends of metal ...
The chemical composition of the Orion star-forming region: II. Stars, gas, and dust: the abundance discrepancy conundrum
the Orion star-forming region II. Stars
2011/1/13
We re-examine the recombination/collisional emission line (RL/CEL) nebular abundance discrepancy problem in the light of recent high-quality abundance determinations in young stars in the Orion star-f...
Dust-Obscured Star-Formation in Intermediate Redshift Galaxy Clusters
Dust-Obscured Star-Formation Intermediate Redshift Galaxy Clusters
2011/1/11
We present Spitzer MIPS 24-micron observations of 16 0.4usters drawn from the ESO Distant Cluster Survey (EDisCS). This is the first large 24-micron survey of clusters at intermediate ...