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Multi-wavelength study of XMMU J2235.3-2557: the most massive galaxy cluster at z > 1
P. Rosati, P. Tozzi, R. Gobat +14
[Abridged] XMMU J2235.3-2557 is one of the most distant X-ray selected clusters, spectroscopically confirmed at z=1.39. We characterize the galaxy populations of passive members, t…
V405 Peg (RBS 1955): A Nearby, Low-Luminosity Cataclysmic Binary
J. R. Thorstensen, R. Schwarz, A. D. Schwope +5
(Abridged). The cataclysmic binary V405 Peg, originally discovered as ROSAT Bright Source (RBS) 1955 (= 1RXS J230949.6+213523), shows a strong contribution from a late-type seconda…
Post common envelope binaries from the SDSS. VI. SDSS J120615.73+510047.0: a new low accretion rate magnetic binary
A. D. Schwope, A. Nebot Gomez-Moran, M. R. Schreiber +1
We report the discovery of the ninth pre-polar, consisting of a late-type ZAMS secondary and a magnetic white dwarf. The white dwarf accretes at extreme low rate, dot{M} ~ 10**-14…
SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
II SEGUE Collaboration, Brian Yanny, Constance Rockosi +2
The SEGUE survey obtained 240,000 moderate resolution (R = 1800) spectra from 3900 - 9000 Angstroms of fainter Milky Way stars (14.0 < g < 20.3) of a wide variety of spectral types…
Multi-wavelength observations of a rich galaxy cluster at z ~ 1: the HST/ACS colour-magnitude diagram
Joana S. Santos, Piero Rosati, Raphael Gobat +12
XMMU J1229+0151 is a rich galaxy cluster with redshift z=0.975, that was serendipitously detected in X-rays within the scope of the XMM-Newton Distant Cluster Project. HST/ACS obse…
XMM-Newton RGS spectrum of RX J0720.4-3125: An absorption feature at 0.57 keV
V. Hambaryan, R. Neuhäuser, F. Haberl +2
We found a narrow absorption feature at 0.57keV in the co-added RGS spectrum of the isolated neutron star RX J0720.4-3125 with an equivalent width of 1.35+/-0.3eV and FWHM ~6.0eV.…