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XMM-Newton observation of the low-metallicity galaxy cluster A1674
Hayashida, K.; Katayama, H.; Nishino, Y.
We present the XMM-Newton observation of an X-ray faint cluster of galaxies A1674. Three regions of diffuse X-ray emission (A1674-NE, A1674-Center, and A1674-West) are detected from A1674. We measure the temperature and metal abundance of this diffuse emission. The diffuse X-ray emission from A1674-Center can be characterized by a thermal plasma w…
Exploring the INTEGRAL Sources in Search for New Microquasars
Mirabel, I. F.; Combi, J. A.; Ribó, M.
Here we present a search for new microquasars among the sources detected with the INTEGRAL satellite (IGR sources). We focus on radio emitting IGR sources and report the discovery of two new probable extragalactic sources behind the galactic plane, as well as the detection at higher energies of the ASCA source AX J1639.0-4642, probably a new micro…
Morphological analysis of intermediate redshift galaxies using the HST/ACS GOODS survey
Kembhavi, Ajit K.; Rawat, A.
We have been involved in performing photometry and morpholog- ical analysis of a large, complete sample of galaxies in the intermediate redshift range using the high resolution images obtained by the Great Observatories Origins Deep Survey (GOODS) with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST). Imaging data is avail…
Rosetta flyby observed from Cape Town
Roberts, Gregory
Ulysses:. Exploring the Heliosphere in Four Dimensions
Marsden, Richard G.
Ulysses is the first spacecraft ever to fly over the poles of the sun. Its primary goal is to explore the heliosphere in four dimensions: three spatial dimensions, and time. An overview of some of the recent results from the mission will be presented. Particular emphasis will be given to the changes occurring in the 3-dimensional heliosphere from …
The Properties of the Absorbing and Line Emitting Material in IGR J16318-4848
Guainazzi, M.; Matt, Giorgio
We analyzed the 2003 Target of Opportunity XMM-Newton observation of IGR J16318-4848, to derive the properties of the matter responsible for the obscuration and for the emission of Fe and Ni lines. The line of sight material has a column density of about 2×1024 cm-2 but, from the Fe Kα line EW and Compton Shoulder, we argue t…
Spectrophotometry of nine stars with planets
Tereschenko, V. M.
The energy distributions in the spectra of nine stars with planets were obtained from observations. The synthetic colour indices in the photometric UBV, WBVR and the Tycho catalogue systems were calculated on the basis of observations. The effective temperatures and metallicities of the investigated stars were determined by comparing the calculate…
Spatial distribution of energetic ion compositions in the plasma sheet observed by Cluster/RAPID
Ruan, P.; Daly, P.; Wang, Y. +4 more
Rosetta space mission to Comet 67P/Churyumov--Gerasimenko
Churyumov, K. I.
We present preliminary results of study of middle-resolution optical spectra of Comet 153P/Ikeya--Zhang obtained on May 5, 2002 with the help of the 2.12-m reflector of the Guillermo Haro Astrophysical Observatory. Emission lines of the molecules C2, C3, CN, NH2, CO (Asundi and triplet bands), and H2O
XMM-Newton observation of Vela shrapnel D
Katsuda, Satoru; Tsunemi, Hiroshi
The ROSAT all-sky survey discovered several 'shrapnels', showing boomerang structures outside the Vela SNR. We observed the shrapnel D in the eastern limb of the Vela SNR with the XMM-Newton satellite. There is an X-ray bright ridge structure in our FOV running from north to south. There is also an optical bright ridge structure running parallel t…