... and chemically different populations (the thin and thick disks, halo and bulge) is surely telling us something crucial about ... Next: Proposed Facility Up: You are from Mt. Previous: You are from Mt. Paul Francis . Sun Aug 30 11:56:56 EST 1998. ...
... Globular clusters are located in galactic halos, of which the Milky Way may have from 180 to 200, or more. ... Most are located at least several thousand light-years away from the sun, and most are around 12 billion years old or more. ...
... As in Fig. 4 the contours corresp ond to 38%, 68%, 82% and 95%. + halo) comp onents. ... 3.0 ± 0.4 kp c (Gould et al. 1996), we estimate that the Sun lies farther from the Galactic center than 72+8 % of the stars in ...
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Ссылки http://www.mso.anu.edu.au/~charley/papers/RoblesLineweaverAstroph.pdf -- 2242.0 Кб -- 20.05.2008 Похожие документы
... Temperatures were restricted to the range 6200-6400 K, and metallicities were less that 1/300 that of the sun. ... astronomers Monique and Francois Spite discovered that for metal-poor halo stars in the effective temperature range 5700-6400 K ...
... AAS Meeting #223, #433.03 . 15. The newly-discovered outer halo globular cluster system of M31 . ... Astronomical Society of the Pacific, San Francisco, p. 95 . 5. Is our Sun a singleton? ...
... 56. The halo+cluster system of the Galactic globular cluster NGC 1851 . ... 55. The outer halo globular cluster system of M31 - II. Kinematics . ... 54. The outer halo globular cluster system of M31 - I. The final PAndAS catalogue . ...
... The region near the center of our Galaxy is known to contain stars of several types, including very old red giants with masses near that of the sun and young stars with masses up to 100 times the sun's mass. ...
... The star, HE0107-5240, is 80% as massive as the Sun, but has practically no metals2, less than 1/200,000th the amount found in the Sun, making it the most metal-weak star known. ...
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Ссылки http://www.mso.anu.edu.au/annualReport/2002/RSAA_AnnRep_2002.pdf -- 1830.6 Кб -- 15.10.2004 Похожие документы