Search Publications
Characterizing the Youngest Herschel-detected Protostars. I. Envelope Structure Revealed by CARMA Dust Continuum Observations
Henning, Thomas; Manoj, P.; Ragan, Sarah E. +8 more
We present Combined Array for Research in Millimeter-wave Astronomy 2.9 mm dust continuum emission observations of a sample of 14 Herschel-detected Class 0 protostars in the Orion A and B molecular clouds, drawn from the PACS Bright Red Sources (PBRS) sample. These objects are characterized by very red 24-70 µm colors and prominent submillim…
Stellar Masses and Star Formation Rates of Lensed, Dusty, Star-forming Galaxies from the SPT Survey
Béthermin, M.; Weiss, A.; Greve, T. R. +18 more
To understand cosmic mass assembly in the universe at early epochs, we primarily rely on measurements of the stellar masses and star formation rates (SFRs) of distant galaxies. In this paper, we present stellar masses and SFRs of six high-redshift (2.8 ≤ z ≤ 5.7) dusty, star-forming galaxies (DSFGs) that are strongly gravitationally lensed by fore…
HST/ACS Direct Ages of the Dwarf Elliptical Galaxies NGC 147 and NGC 185
Geha, M.; van der Marel, R. P.; Guhathakurta, P. +3 more
We present the deepest optical photometry for any dwarf elliptical (dE) galaxy based on Hubble Space Telescope Advanced Camera for Surveys (ACS) observations of the Local Group dE galaxies NGC 147 and NGC 185. Our F606W and F814W color-magnitude diagrams are the first to reach below the oldest main sequence turnoff in a dE galaxy, allowing us to d…
Deconstructing Thermal Sunyaev-Zel’dovich - Gravitational Lensing Cross-correlations: Implications for the Intracluster Medium
Battaglia, N.; Hill, J. C.; Murray, N.
Recent first detections of the cross-correlation of the thermal Sunyaev-Zel’dovich (tSZ) signal in Planck cosmic microwave background (CMB) temperature maps with gravitational lensing maps inferred from the Planck CMB data and the CFHTLenS galaxy survey provide new probes of the relationship between baryons and dark matter. Using cosmological hydr…
An HST/COS survey of molecular hydrogen in DLAs & sub-DLAs at z < 1: molecular fraction and excitation temperature
Muzahid, S.; Srianand, R.; Charlton, J.
We present the results of a systematic search for molecular hydrogen (H2) in low-redshift (0.05 ≲ z ≲ 0.7) Damped Lyα absorbers (DLAs) and sub-DLAs with N({H II}) ≳ 10^{19.0} cm-2, in the archival Hubble Space Telescope/Cosmic Origins Spectrograph spectra. Our core sample is comprised of 27 systems with a median log N({H I}) …
On the Statistical Relationship Between CME Speed and Soft X-Ray Flux and Fluence of the Associated Flare
Klein, K. -L.; Salas-Matamoros, C.
Observation and theory both reveal a close relationship between the kinematics of coronal mass ejections (CMEs) and the thermal energy release traced by the related soft X-ray (SXR) emission. A major problem of empirical studies of this relationship is the distortion of the CME speed by the projection effect in the coronagraphic measurements. We p…
Dark side of comet 67P/Churyumov-Gerasimenko in Aug.-Oct. 2014. MIRO/Rosetta continuum observations of polar night in the southern regions
Jorda, L.; Sierks, H.; Keller, H. U. +20 more
The high obliquity (~50°) of comet 67P/Churyumov-Gerasimenko (67P) is responsible for a long-lasting winter polar night in the southern regions of the nucleus. We report observations made with the submillimeter and millimeter continuum channels of the Microwave Instrument onboard the Rosetta Orbiter (MIRO) of the thermal emission from these region…
Chemically Distinct Nuclei and Outflowing Shocked Molecular Gas in Arp 220
Sturm, E.; Greve, T. R.; Planesas, P. +9 more
We present the results of interferometric spectral line observations of Arp 220 at 3.5 mm and 1.2 mm from the Plateau de Bure Interferometer, imaging the two nuclear disks in H13CN(1-0) and (3-2), H13CO+(1-0) and (3-2), and HN13C(3-2) as well as SiO(2-1) and (6-5), HC15N(3-2), and SO(66
Calibration of the Swift-UVOT ultraviolet and visible grisms
Carter, M.; Mehdipour, M.; Brown, P. J. +16 more
We present the calibration of the Swift Ultraviolet and Optical Telescope (UVOT ) grisms, of which there are two, providing low-resolution field spectroscopy in the ultraviolet and optical bands, respectively. The UV grism covers the range λ1700-5000 Å with a spectral resolution (λ/Δλ) of 75 at λ2600 Å for source magnitudes of u=10-16 mag, while t…
Rosetta Lander - Philae: Landing preparations
Sierks, Holger; Jurado, Eric; Ulamec, Stephan +11 more
Rosetta and Philae have been in hibernation until January 20, 2014. After the successful wakeup they underwent a post-hibernation commissioning. The orbiter instruments (like e.g. the OSIRIS cameras, VIRTIS, MIRO, Alice and ROSINA) characterized the target comet and its environment to allow landing site selection and the definition of a separation…