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Erratum: Kinematics of gas and stars in the circumnuclear star-forming ring of NGC3351
Terlevich, Roberto; Terlevich, Elena; Díaz, Ángeles I. +2 more
INTEGRAL high energy sky: The keV to MeV cosmic sources
Ubertini, Pietro; Bazzano, Angela; Bassani, Loredana +2 more
After almost 5 years of operation, ESA's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) Space Observatory has unveiled a new soft gamma-ray sky and produced a remarkable harvest of results, ranging from identification of new high energy sources, to the discovery of dozens of variable sources to the mapping of the aluminum emission from…
Peculiarities of galactic rotation in the solar neighborhood from the data on red clump giants
Rybka, S. P.
The three-dimensional Ogorodnikov-Milne model was used to investigate the local velocity field on the basis of the tangential velocities of more than 53 000 red giants which were identified as most probable Red Clump members from the Tycho-2 catalog. Galactic rotation parameters were determined for two star groups at the galactic latitudes |b| <…
Solar prominence properties derived from the UV-EUV SUMER spectral atlas
Vial, J. -C.; Parenti, S.; Lemaire, P.
In this paper, we summarize the work done to build a UV-EUV spectral atlas of a prominence and we introduce some recent scientific results obtained from these data. For this work we used SOHO/SUMER data covering the full wavelength range accessible by the instrument (from about 800 to 1600 Å), when a prominence and the quiet Sun (used as spectral …
Planetary transits from CoRoT—Europe and exoplanets
Fridlund, C. V. M.
CoRoT (COnvection, ROtation and planetary Transit) was launched successfully into a near-perfect orbit on 27 December 2006 and went through its verification phase until 2 April 2007 without incident. Indeed, this process went so well that scientific operations could commence on 2 February 2007. Under the management of the French space agency CNES …
NGC 2419: an ``intergalactic wanderer'' or a simple Galactic globular cluster? .
Di Criscienzo, M.; Clementini, G.; Ripepi, V. +8 more
We have carried out a new photometric study of the remote Galactic globular cluster NGC 2419, using proprietary and archive B,V,I time-series CCD photometry of the cluster, that allowed us to discover a large number of new variable stars and to obtain a new colour magnitude diagram that reaches V∼ 26 mag over a field of 50x43 square arcmin centere…
Analysis of low frequency whistler wave occurrences in the night-side Venus ionosphere
White, Harold Glenn
This body of work deals with a detailed analysis of plasma, magnetic, and electric field data from Pioneer Venus Orbiter (PVO) to determine if the data are consistent with the possibility of lightning on Venus. This has been a strong topic of debate in the planetary physics community. In a recent Nature article [Ingersoll, 2007], Ingersoll provide…
Planned and serendipitous surveys with XMM-Newton
Watson, M. G.
This article compares and contrasts the virtues of planned (and normally contiguous) surveys with XMM-Newton and the XMM-Newton serendipitous sky survey and discusses various ways in which both the quality and efficiency of contiguous surveys with XMM-Newton could potentially be improved.
Radio Continuum Observations of the Candidate Supermassive Black Hole in the Dwarf Elliptical VCC 128
Pasquali, Anna; Seth, Anil; Debattista, Victor P. +4 more
The presence of black holes (BHs) at the centers of dwarf elliptical galaxies (dEs) has been argued both theoretically and observationally. Using archival HST WFPC2 data, we found the Virgo cluster dwarf elliptical galaxy VCC 128 to harbor a binary nucleus, a feature that is usually interpreted as the observable signature of a stellar disk orbitin…
Open questions on black hole binaries
Kaaret, P.
I discuss open questions regarding accreting black holes in binary systems, focusing on two questions: can we measure the spins of black holes and what is the nature of the ultraluminous X-ray sources. XMM-Newton could make significant strides in answering these questions and others over the next ten years. I suggest two observational programs des…