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19 papers · 2 filters
Deconstructing HD 28867
Frederick M. Walter, Tracy L. Beck, Jon A. Morse +1
The 3" pair of B9 stars, HD 28867, is one of the brightest X-ray sources in the Taurus-Auriga star forming region. In this multi-wavelength study, we attempt to deduce the source o…
Does the Sun Shine by pp or CNO Fusion Reactions?
John N. Bahcall, M. C. Gonzalez-Garcia, C. Penya-Garay
We show that solar neutrino experiments set an upper limit of 7.8% (7.3% including the recent KamLAND measurements) to the fraction of energy that the Sun produces via the CNO fusi…
Near-Infrared Observations of Powerful High-Redshift Radio Galaxies: 4C 40.36 and 4C 39.37
E. Egami, L. Armus, G. Neugebauer +4
We present near-infrared imaging and spectroscopic observations of two FR II high-redshift radio galaxies (HzRGs), 4C 40.36 (z=2.3) and 4C 39.37 (z=3.2), obtained with the Hubble,…
Astrophysics of Young Star Binaries
L. Prato, T. P. Greene, M. Simon
This paper describes our study of the astrophysics of individual components in close pre-main-sequence binaries. We observed both stars in 17 systems, located in 4 nearby star form…
Component Masses of the Young Spectroscopic Binary UZ Tau E
L. Prato, M. Simon, T. Mazeh +2
We report estimates of the masses of the component stars in the pre-main-sequence spectroscopic binary UZ Tau E. These results come from the combination of our measurements of the…
Near Infrared Adaptive Optics Imaging of the Embedded Cluster NGC 2024
T. L. Beck, M. Simon, L. M. Close
We present the results of a high resolution near infrared adaptive optics survey of the young obscured star forming region NGC 2024. Out of the total 73 stars detected in the adapt…