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A new study of the supernova remnant G344.7-0.1 located in the vicinity of the unidentified TeV source HESS J1702-420
Giacani, E.; Smith, M. J. S.; Dubner, G. +1 more
Context. The identification of counterparts of dark gamma-ray sources adds greatly to our understanding of their underlying astrophysical processes.
Aims: We investigate the physical properties of the supernova remnant (SNR) G344.7-0.1, to clarify whether it hosts a pulsar wind nebula (PWN), and the possible physical relationship between the …
A Volume-limited Photometric Survey of 114 γ Doradus Candidates
Henry, Gregory W.; Fekel, Francis C.; Henry, Stephen M.
We have carried out a photometric survey of a complete, volume-limited sample of γ Doradus candidates. The sample was extracted from the Hipparcos catalog and consists of 114 stars with colors and absolute magnitudes within the range of known γ Doradus stars and that also lie within a specified volume of 266,600 pc3. We devoted one year…
HerMES: SPIRE emission from radio-selected active galactic nuclei
Aussel, H.; Elbaz, D.; Pérez-Fournon, I. +60 more
We examine the rest-frame far-infrared emission from powerful radio sources with 1.4-GHz luminosity densities of 25 ≤ log(L1.4/W Hz-1) ≤ 26.5 in the extragalactic Spitzer First Look Survey field. We combine Herschel/SPIRE flux densities with Spitzer/Infrared Array Camera and Multiband Imaging Photometer for Spitzer infrared d…
Optical and infrared colors of transneptunian objects observed with HST
Grundy, W. M.; Noll, K. S.; Benecchi, S. D. +2 more
We present optical colors of 72 transneptunian objects (TNOs), and infrared colors of 80 TNOs obtained with the WFPC2 and NICMOS instruments, respectively, on the Hubble Space Telescope (HST). Both optical and infrared colors are available for 32 objects that overlap between the datasets. This dataset adds an especially uniform, consistent and lar…
Photometry of Triton 1992-2004: Surface volatile transport and discovery of a remarkable opposition surge
Buratti, B. J.; Hillier, J. K.; Hicks, M. D. +9 more
Triton, the large satellite of Neptune, was imaged by the Voyager 2 spacecraft in 1989 with dark plumes originating in its volatile-rich south polar region. Southern summer solstice, a time when seasonal volatile transport should be at a maximum, occurred in 2001. Ground-based observations of Triton's rotational light curve obtained from Table Mou…
Dust-correlated cm wavelength continuum emission from translucent clouds ζ Oph and LDN 1780
Bond, J. R.; Davies, R. D.; Davis, R. J. +17 more
The diffuse cm wave IR-correlated signal, the 'anomalous' CMB foreground, is thought to arise in the dust in cirrus clouds. We present Cosmic Background Imager (CBI) cm wave data of two translucent clouds, ζ Oph and LDN 1780 with the aim of characterizing the anomalous emission in the translucent cloud environment.
In ζ Oph, the measured brig…VLBI imaging of a flare in the Crab nebula: more than just a spot
Muxlow, T. W. B.; Horns, D.; Lobanov, A. P.
We report on very long baseline interferometry (VLBI) observations of the radio emission from the inner region of the Crab nebula, made at 1.6 GHz and 5 GHz after a recent high-energy flare in this object. The 5 GHz data have provided only upper limits of 0.4 milli-Jansky (mJy) on the flux density of the pulsar and 0.4 mJy/beam on the brightness o…
Exploring planetary magnetic environments using magnetically unclean spacecraft: a systems approach to VEX MAG data analysis
Zhang, T. L.; Balikhin, M. A.; Delva, M. +4 more
In situ measurements of the magnetic field are vital to the study of many fundamental problems in planetary research. Therefore the magnetometer experiment is a key element of the payload of Venus Express. In addition to the interaction of the solar wind with Venus, these measurements are crucial for the study of atmospheric escape and detection o…
X Herculis and TX Piscium: two cases of ISM interaction with stellar winds observed by Herschel
Blommaert, J. A. D. L.; Olofsson, H.; Jorissen, A. +14 more
The asymptotic giant branch (AGB) stars X Her and TX Psc have been imaged at 70 and 160 µm with the PACS instrument onboard the Herschel satellite, as part of the large MESS (Mass loss of Evolved StarS) guaranteed time key program. The images reveal an axisymmetric extended structure with its axis oriented along the space motion of the stars…
IKT 16: a composite supernova remnant in the Small Magellanic Cloud
Pietsch, W.; Haberl, F.; Hatzidimitriou, D. +11 more
Aims: IKT 16 is an X-ray and radio-faint supernova remnant (SNR) in the Small Magellanic Cloud (SMC). A previous X-ray study of this SNR found a hard X-ray source near its centre. Using all available archival and proprietary XMM-Newton data, alongside new multi-frequency radio-continuum surveys and optical observations at Hα and forbidden [SI…