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29 papers · 1 filter
The late-type stellar component in the ROSAT All-Sky Survey at high galactic latitude
F. -J. Zickgraf, J. M. Alcala, E. Covino +4
We investigated the properties of the late-type stellar component in the RASS at high-galactic latitude |b| based on an optically identified sample of ROSAT All-Sky Survey (RASS) X…
Theoretical models for classical cepheids: V. Multiwavelength relations
F. Caputo, M. Marconi, I. Musella
From a theoretical study based on nonlinear, nonlocal and time-dependent convective pulsating models at varying mass and chemical composition, we present the predicted Period-Lumin…
The puzzling theoretical predictions for the luminosity of clumping He burning stars
V. Castellani, S. Degl'Innocenti, L. Girardi +3
This paper deals with theoretical predictions for He burning models in a range of masses covering the so-called Red Giant Branch phase transition. Taking as a guideline the observa…
Near-infrared Luminosity Function in the Coma cluster
S. Andreon, R. Pello'
We present the near-infrared H band luminosity function (hereafter LF) of the Coma cluster of galaxies. It is the deepest ever computed in the near-infrared, for any type of enviro…
ROSAT PSPC observations of T Tauri stars in MBM12
T. Hearty, R. Neuhauser, B. Stelzer +4
We present the ROSAT PSPC pointed and ROSAT All-Sky Survey (RASS) observations and the results of our low and high spectral resolution optical follow-up observations of the T Tauri…
RXJ1313.2-3259, a missing link in CV evolution?
B. T. Gaensicke, K. Beuermann, D. de Martino +1
We present low-state IUE spectroscopy of the ROSAT-discovered polar RXJ1313.2-3259. The SWP spectrum displays a broad Lyman alpha absorption profile, which can be fitted with a two…