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astro-ph1999
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…
astro-ph1999
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…
astro-ph1999
The low mass stellar population of the Orion OB1 association and implications for the formation of low mass stars
F. M. Walter, J. M. Alcala, R. Neuhaeuser +2
The OB associations, which are fossil star formation regions, retain the end-products of the star formation process in an open, unobscured environment. Observations of the low mass…