Search Publications
A Large X-Ray Flare from a Single Weak-Lined T Tauri Star TWA-7 Detected with MAXI GSC
Isobe, Naoki; Yamaoka, Kazutaka; Nakagawa, Yujin E. +35 more
We present a large X-ray flare from a nearby weak-lined T Tauri star TWA-7 detected with the Gas Slit Camera (GSC) on the Monitor of All-sky X-ray Image (MAXI). The GSC captured X-ray flaring from TWA-7 with a flux of 3
Evidence for a merger-revived radio phoenix in MaxBCG J217.95869+13.53470
Simionescu, A.; Croston, J. H.; Brüggen, M. +3 more
We use XMM-Newton observations of the galaxy cluster MaxBCG J217.95869+13.53470 to analyse its physical properties and dynamical state. MaxBCG J217.95869+13.53470 is found at a redshift of 0.16, has a mass of ∼1 × 1014 M⊙ and a luminosity of 7.9 × 1043 erg s-1. The temperature map shows the presence of h…
FIR Measurements of Lyα Emitters at z <~ 1.0: Dust Attenuation from PACS-Herschel
Berta, S.; Magnelli, B.; Lutz, D. +24 more
One remaining open question regarding the physical properties of Lyα emitters (LAEs) is their dust content and evolution with redshift. The variety of results is large and with those reported by now it is difficult to establish clear relations between dust, other fundamental parameters of galaxies (star formation rate, metallicity, or age), and re…
A Kinematic and Photometric Study of the Galactic Young Star Cluster NGC 7380
Chen, W. P.; Chen, Li; Sharma, Saurabh +6 more
We present proper motions, radial velocities, and a photometric study of the Galactic open cluster NGC 7380, which is associated with prominent emission nebulosity and dark molecular clouds. On the basis of the sample of highly probable member stars, the star cluster is found to be at a distance of 2.6 ± 0.4 kpc, has an age of around 4 Myr, and a …
Chemical abundances in the protoplanetary disc LV 2 (Orion) - II. High-dispersion VLT observations and microjet properties
Tsamis, Y. G.; Walsh, J. R.
Integral field spectroscopy of the LV 2 proplyd is presented taken with the Very Large Telescope (VLT)/FLAMES Argus array at an angular resolution of 0.31 × 0.31 arcsec2 and velocity resolutions down to 2 km s-1 pixel-1. Following subtraction of the local M42 emission, the spectrum of LV 2 is isolated from the surr…
Post-equinox periodicities in Saturn's energetic electrons
Krupp, N.; Krimigis, S. M.; Mitchell, D. G. +1 more
Since Saturn's vernal equinox in August 2009 (day 223), energetic electrons (110-365 keV) have exhibited a variety of periodic and aperiodic behavior within a spectral window of 5-15 hours. From late 2009 through the end of 2010, when the observed at dusk, a single period near 10.7 hours dominated the Lomb spectra of these particles. Near the end …
Discovery of the Disturbed Radio Morphology in the Interacting Binary Quasar FIRST J164311.3+315618
Janiuk, Agnieszka; Kunert-Bajraszewska, Magdalena
We report the high-resolution radio observations and the subsequent analysis of the radio-loud compact steep spectrum quasar FIRST J164311.3+315618, one of the members of a binary system. The second component of the system is a radio-quiet active galactic nucleus. The projected separation of this pair is 2farcs3 (15 kpc) it is one of the smallest-…
Rotational effects in the system of proper motions of the UCAC3 catalogue
Bobylev, V. V.; Khovritchev, M. Yu.
A set of ≈8 million single stars of the UCAC3 catalogue has been analysed. It contains stars with reliable proper motions with not less than three epochs of observations used to compute the proper motion. Our main goal is to investigate the inertiality of the reference system defined by 'good' stars of the UCAC3 catalogue. The formalism of vectori…
Reconstruction of steady, three-dimensional, magnetohydrostatic field and plasma structures in space: Theory and benchmarking
Hasegawa, Hiroshi; Sonnerup, Bengt U. Ö.
A first attempt is made to reconstruct magnetic field and pressure distributions in steady, three-dimensional (3D), magnetohydrostatic structures, using field and plasma data taken by two proximate spacecraft as they traverse such structures in space. The reconstruction is based on integration of the four scalar magnetohydrostatic equations for th…
Space Telescope Imaging Spectrograph Spectroscopy of the Central 14 pc OF NGC 3998: Evidence for an Inflow
Devereux, Nick
Prior imaging of the lenticular galaxy, NGC 3998, with the Hubble Space Telescope revealed a small, highly inclined, nuclear ionized gas disk, the kinematics of which indicate the presence of a 270 million solar mass black hole. Plausible kinematic models are used to constrain the size of the broad emission line region (BELR) in NGC 3998 by modeli…