Search Publications
Missions
Journals
Publication Years
The wind of W Hydrae as seen by Herschel. I. The CO envelope
Waters, L. B. F. M.; Menten, K. M.; Blommaert, J. A. D. L. +25 more
Context. Asymptotic giant branch (AGB) stars lose their envelopes by means of a stellar wind whose driving mechanism is not understood well. Characterizing the composition and thermal and dynamical structure of the outflow provides constraints that are essential for understanding AGB evolution, including the rate of mass loss and isotopic ratios. …
ALMA Observations of a Misaligned Binary Protoplanetary Disk System in Orion
Hughes, A. Meredith; Di Francesco, James; Johnstone, Doug +6 more
We present Atacama Large Millimeter/Submillimeter Array (ALMA) observations of a wide binary system in Orion, with projected separation 440 AU, in which we detect submillimeter emission from the protoplanetary disks around each star. Both disks appear moderately massive and have strong line emission in CO 3-2, HCO+ 4-3, and HCN 3-2. In …
Seeing in the dark - II. Cosmic shear in the Sloan Digital Sky Survey
Mandelbaum, Rachel; Schlegel, David; Seljak, Uroš +3 more
Statistical weak lensing by large-scale structure - cosmic shear - is a promising cosmological tool, which has motivated the design of several large upcoming surveys. Here, we present a measurement of cosmic shear using co-added Sloan Digital Sky Survey (SDSS) imaging in 168 square degrees of the equatorial region, with r < 23.5 and i < 22.5…
Hierarchical Star Formation in Nearby LEGUS Galaxies
Gouliermis, Dimitrios A.; Grebel, Eva K.; Smith, Linda J. +19 more
Hierarchical structure in ultraviolet images of 12 late-type LEGUS galaxies is studied by determining the numbers and fluxes of nested regions as a function of size from ~1 to ~200 pc, and the number as a function of flux. Two starburst dwarfs, NGC 1705 and NGC 5253, have steeper number-size and flux-size distributions than the others, indicating …
The XMM-LSS survey: the Class 1 cluster sample over the extended 11 deg2 and its spatial distribution
Smith, G. P.; Altieri, B.; Pierre, M. +10 more
This paper presents 52 X-ray bright galaxy clusters selected within the 11 deg2 XMM-LSS survey. 51 of them have spectroscopic redshifts (0.05 < z < 1.06), one is identified at zphot = 1.9, and all together make the high-purity `Class 1' (C1) cluster sample of the XMM-LSS, the highest density sample of X-ray-selected clu…
Gas lines from the 5-Myr old optically thin disk around HD 141569A . Herschel observations and modeling
Pinte, C.; Ménard, F.; Woitke, P. +20 more
Context. The gas- and dust dissipation processes in disks around young stars remain uncertain despite numerous studies. At the distance of ~99-116 pc, HD 141569A is one of the nearest HerbigAe stars that is surrounded by a tenuous disk, probably in transition between a massive primordial disk and a debris disk. Atomic and molecular gases have been…
The progenitors of calcium-rich transients are not formed in situ*
Lyman, J. D.; Davies, M. B.; Levan, A. J. +2 more
We present deep Very Large Telescope and Hubble Space Telescope observations of the nearest examples of Ca-rich `gap' transients - rapidly evolving transient events, with a luminosity intermediate between novae and supernovae. These sources are frequently found at large galactocentric offsets, and their progenitors remain mysterious. Our observati…
Long-term change in the cyclotron line energy in Hercules X-1
Harrison, F. A.; Klochkov, D.; Wilms, J. +5 more
Aims: We investigate the long-term evolution of the cyclotron resonance scattering feature (CRSF) in the spectrum of the binary X-ray pulsar
Metho…
Warm Molecular Gas in Luminous Infrared Galaxies
Sanders, D. B.; Inami, H.; Isaak, K. G. +18 more
We present our initial results on the CO rotational spectral line energy distribution (SLED) of the J to J-1 transitions from J = 4 up to 13 from Herschel SPIRE spectroscopic observations of 65 luminous infrared galaxies (LIRGs) in the Great Observatories All-Sky LIRG Survey. The observed SLEDs change on average from one peaking at J <= 4 to a …
A new precise mass for the progenitor of the Type IIP SN 2008bk
Ramirez-Ruiz, Enrico; Mattila, Seppo; Eldridge, John J. +1 more
The progenitor of the Type IIP supernova (SN) 2008bk was discovered in pre-explosion g'r'i'IYJHKs images, acquired with European Southern Observatory Very Large Telescope FOcal Reducer and low dispersion Spectrograph, High Acuity Wide field K-band Imager and Infrared Spectrometer and Array Camera instrum…