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23 papers · 2 filters
The 3-point function in the large scale structure: I. The weakly non-linear regime in N-body simulations
J. Barriga, E. Gaztanaga
This paper presents a comparison of the predictions for the 2 and 3-point correlation functions of density fluctuations, xi_2 and xi_3, in gravitational perturbation theory (PT) ag…
Maximum mass of neutron stars with a quark core
G. F. Burgio, M. Baldo, P. K. Sahu +2
Massive neutron stars (NS) are expected to possess a quark core. While the hadronic side of the NS equation of state (EOS) can be considered well established, the quark side is qui…
Absolute dimensions of the M-type eclipsing binary YY Geminorum (Castor C): a challenge to evolutionary models in the lower main-sequence
Guillermo Torres, Ignasi Ribas
We present new spectroscopic observations of the detached late-type double-lined eclipsing binary YY Gem, a member of the Castor sextuple system and one of the benchmarks for the c…
Interferometric Mapping of Magnetic Fields in Star-forming Regions II. NGC2024 FIR5
Shih-Ping Lai, Richard M. Crutcher, Jose M. Girart +1
We present the first interferometric polarization maps of the NGC2024 FIR5 molecular core obtained with the BIMA array at approximately 2 arcsec resolution. We measure an average p…
Determination of proper motions and membership of the open star cluster NGC2548
Z. Y. Wu, K. P. Tian, L. Balaguer-Nunez +3
Absolute proper motions, their corresponding errors and membership probabilities of 501 stars in the intermediate-age open cluster NGC2548 region are determined from MAMA measureme…
Stellar and circumstellar evolution of long period variable stars
M. O. Mennessier, X. Luri
In a first paper, HIPPARCOS astrometric and kinematic data were used to calibrate both infrared K and IRAS luminosities at the same time as kinematic parameters of Long Period Vari…