Zobrazeno 1 - 10
of 72
pro vyhledávání: '"M. Odenkirchen"'
Autor:
A. P. Beardmore, Matthew R. Burleigh, M. Odenkirchen, M. E. L. Hopwood, S. P. S. Eyres, Tim O'Brien, Alan J. Penny, R. D. Jeffries, A. Evans, Timothy P.L. Roberts
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 316:L5-L8
ABSTRA C T We report the possible detection of diffuse X-ray emission in the environment of NGC 6779, and find the emission to be well aligned with the proper motion of the cluster. The position of the emission suggests we are observing heated ISM in
Autor:
M. Odenkirchen, P. Brosche
Publikováno v:
Astronomische Nachrichten. 320:397-412
Publikováno v:
New Astronomy. 4:133-139
The main aim of this paper is an extension of the heuristic concept of the tidal radii of globular clusters to the case of very non-circular orbits, i.e. with large differences between the peri- and apogalactic distances. We had found earlier that pe
Publikováno v:
New Astronomy. 3:583-599
We report on the analysis of astrometric and photometric data from Hipparcos, Tycho and the ACT catalogue in a 1200 sq. degree field around the nearby open star cluster in Coma Berenices and infer the characteristic features of this cluster. From a s
Autor:
Mike Irwin, J. L. Muiños, C. Ducourant, Edwin L. van Dessel, Milcho Tsvetkov, M. Odenkirchen, George V. Coyne, Emmanuael Davoust, Theodore J. Rafferty, J. Sanner, Jean-Pierre M. De Cuyper, E. V. Glushkova, Ivan H. Bustos Fierro, Alan E. Vaughan, Dayton L. Jones, Robert W. Argyle, M. Sanchez, Carlos Riquelme Abad, Kari A. Lumme, Rosa B. Orellana, James Biggs, Noah Brosch, M. Geffert, Alain Fresnau, Beatrice Bucciarelli, T. Pauwels
Publikováno v:
Proceedings of the International Astronomical Union. 3:95-97
Various experiments have definitely demonstrated that one-micron accuracy (0.″06) on the definition of stellar images on CdC plates cannot be claimed, as it was speculated back in 1999. More realistically, a 2-3 micron accuracy is achievable, getti
Publikováno v:
New Astronomy. 2:477-499
We present and analyse space motions and orbits for a sample of 15 galactic globular clusters. The absolute proper motions of these clusters have been determined with respect to reference stars of the new Hipparcos system. Orbital integrations in two
Publikováno v:
Astronomy and Astrophysics Supplement Series. 124:189-196
We report on the measurement of absolute proper motions of stars of magnitude 7 to 14.5 in a 22 eld in the region of the M 81 group of galaxies. This work is part of the Bonn program for the extragalactic link of Hipparcos. The proper motions were de
Publikováno v:
Astronomy and Astrophysics Supplement Series. 122:433-440
In order to calibrate the proper motions of the Hipparcos astrometry satellite, our group has mea- sured accurate absolute proper motions of Hipparcos stars in small elds around optically bright extragalactic radio sources or bright galaxies with sta
Publikováno v:
Symposium - International Astronomical Union. 169:697-702
We present here a new analytical Galactic potential. We used the constraint of galactic globular cluster dynamics compared to their spatial distribution. This was done with the help of the globular clusters' proper motions. The result for the cluster
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 278:251-264