Search Publications
The distribution of water in the high-mass star-forming region NGC 6334 I
Falgarone, E.; Maret, S.; Henning, T. +66 more
Aims: We present observations of twelve rotational transitions of H_216O, H_218O, and H_217O toward the massive star-forming region NGC 6334 I, carried out with Herschel/HIFI as part of the guaranteed time key program Chemical HErschel Surveys of Star forming regions (CHESS). We analyze these observations to o…
Identification of CXOU J171405.7-381031 as a New Magnetar with XMM-Newton
Ishida, Manabu; Bamba, Aya; Nakamura, Ryoko +1 more
We observed the 3.8 s pulsar CXOU J171405.7
Magnetic energy distribution in the four-dimensional frequency and wave vector domain in the solar wind
Glassmeier, K. -H.; Sahraoui, F.; Goldstein, M. L. +1 more
We present a measurement of the energy distribution in the four-dimensional (4-D) frequency and wave vector domain of magnetic field fluctuations in the solar wind. The measurement makes use of the wave telescope technique that has been developed particularly for multispacecraft data analysis. We review briefly the theoretical background and then …
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. VIII. Deconvolution of high resolution near-IR images and simple mass models for 7 gravitationally lensed quasars
Magain, P.; Sluse, D.; Chantry, V.
Aims: We attempt to place very accurate positional constraints on seven gravitationally lensed quasars currently being monitored by the COSMOGRAIL collaboration, and shape parameters for the light distribution of the lensing galaxy. We attempt to determine simple mass models that reproduce the observed configuration and predict time delays. W…
A Change of Rotation Profile in the Envelope in the HH 111 Protostellar System: A Transition to a Disk?
Lee, Chin-Fei
The HH 111 protostellar system consists of two Class I sources (VLA 1 and 2) with putative disks deeply embedded in a flattened envelope at a distance of 400 pc. A follow-up study of this system in C18O (J = 2-1), SO (NJ = 56-45), and 1.33 mm continuum at ~1'' (400 AU) resolution is performed, and it may…
X-ray Observational Signature of a Black Hole Accretion Disk in an Active Galactic Nucleus RX J1633+4718
Wang, T. G.; Yuan, W.; Liu, B. F. +1 more
We report the discovery of a luminous ultra-soft X-ray excess in a radio-loud narrow-line Seyfert 1 galaxy, RX J1633+4718, from archival ROSAT observations. The thermal temperature of this emission, when fitted with a blackbody, is as low as 32.5+8.0 -6.0 eV. This is in remarkable contrast to the canonical temperatures of ~0.…
A multiwavelength strong lensing analysis of baryons and dark matter in the dynamically active cluster AC 114
Sereno, M.; Jetzer, Ph.; Lubini, M.
Context. Strong lensing studies can provide detailed mass maps of the inner regions even in dynamically active galaxy clusters.
Aims: We illustrate the important role of a proper modelling of the intracluster medium, i.e., the main baryonic component. We demonstrate that the addition of a new contribution accounting for the gas can increase t…
Patterns of Flows in an Intermediate Prominence Observed by Hinode
Cao, Wenda; Chae, Jongchul; Ahn, Kwangsu +1 more
The investigation of plasma flows in filaments/prominences gives us clues to understanding their magnetic structures. We studied the patterns of flows in an intermediate prominence observed by Hinode/SOT. By examining a time series of Hα images and Ca II H images, we have found horizontal flows in the spine and vertical flows in the barb. Both of …
Could the Planets Around HR 8799 be Brown Dwarfs?
Rieke, George H.; Moro-Martín, Amaya; Su, Kate Y. L.
We consider the limiting case for orbital stability of the companions to HR 8799. This case is only consistent with ages for the system of ~100 Myr, not with the 1 Gyr age proposed from asteroseismology. The discrepancy probably arises because the inclination of the star is smaller than assumed in analyzing the asteroseismology data. Given this yo…
100 µm and 160 µm emission as resolved star-formation rate estimators in M 33 (HERM33ES)
Boquien, M.; Braine, J.; Calzetti, D. +17 more
Context. Over the past few years several studies have provided estimates of the SFR (star-formation rate) or the total infrared luminosity from just one infrared band. However these relations are generally derived for entire galaxies, which are known to contain a large scale diffuse emission that is not necessarily related to the latest star-forma…