... Формирование подсистем Галактики в свете содержания магния в звездах поля. ... Сводный каталог спектроскопических определений содержаний химических элементов в звездах с точными параллаксами. I. Магний (2005) . Звезды внегалактического происхождения в окрестности Солнца.( ... Тел:раб(8632)433985 . дом(8632)333178 . Факс:(8632)434044 . ...
... 4. (a) Distribution of distance from the Galactic plane, (b) kinematic diagram, and (c) relation between metallicity and distance from the Galactic plane for RR Lyrae stars with [Fe /H ] > -0.95 . ... The solid line in the middle panel is a regression line, whose slope is determined by the subsystem’s rotation rate; the open circles and dashed line correspond to stars with [Fe/H] > -0.4, and the filled circles and dashed line to stars with -0.95 < [Fe/H] < -0.4. ... next figure | privious figure . ...
... Distribution of orbital elements for the RR Lyrae stars. Results for stars with [Fe/H ] > -0.95 (left column), [Fe/H ] < 0.95 and V res < 290 km/s (middle column), and [Fe/H] < -0.95 and V res > 290 km/s (right column) are shown separately. In the top row, we have plotted normal curves fitting the distributions. ... next figure | privious figure . ...
. F IGURE . 2. Зависимость массы от возраста для скоплений, лежащих внутри (а) и вне (б) солнечной орбиты. Прямые - среднеквадратичные регрессии, а цифры - соответствующие коэффициенты корреляции. Светлыми треугольниками на диаграмме (б) обозначены скопления аномально малой массы, те же, что на Рис. 1б . обсуждение в тексте | Предыдущий рисунок .
. F IGURE . 7. The age distribution of the globular clusters of (a) Galactic origin and (b) accreted by the Galaxy. Different shadings are used to show the thick disk and prot-disk halo clusters. The curves are Gaussian fits to the corresponding histograms. Data was taken from ( Borkova Marsakov, 2000 ). discussion in the text | privious figure | next figure .
О дефиците далеких массивных шаровых скоплений . ... Найдено, что на плоскости "скорость диссипации - масса" резко выделяются 10 малометалличных шаровых скоплений аномально малой массы. ... Одновременно эти же скопления демонстрируют увеличивающийся дефицит далеких массивных скоплений с удалением от галактического центра. ... Причем скопления внешнего гало имеют заметно меньшие массы, чем скопления толстого диска даже среди наиболее молодых объектов (см. ... Это скопления Arp 2 , Ter7 и Pal 12 . ...
. F IGURE . 2. The mass-age relationship for the clusters lying inside (a) and outside (b) the solar circle. The stright lines are root-mean-square regressions, r are the corresponding correlation coefficients. The open triangles in diagram (b) show the clusters of anomalous mass the same as in Fig. 1b . discussion in the text | privious figure .
... The first column shows the kinematical diagrams, where is the angle between the line of sight on the object and the vector of rotation about Z -axis, and V S is objects line-of-sight velocity relative to an observer at rest at the position of the Sun. The straight lines are regression fits, whose slopes yield the subsystem’s rotation rate. The second column shows the relations between metallicity and distance from the Galactic plane. ... privious figure | next figure . ...
. F IGURE . 6. Properties of metal-poor subsystems of RR Lyraes with low peculiar velocity (top row) and high peculiar velocity (bottom row). The first column shows histograms in the rotation velocities. The second column shows the distribution of Z (see text for details), and the curves approximate the reconstructed distributions with exponential law The third column shows relations between maximum height above the galactic plane and metallicity. discussion in the text | privious figure | next figure .
... Characteristic parameters of subsystems RR Lyrae field stars and globular clusters . ... RR Lyrae . ... 0.05 . ... lim R max , kpc . ... Z o , kpc . ... grad R [Fe/H], kpc -1 . ...
... The relationship of the mass and the observed galactocentric distance R -- (a), and that of the mass and the total dissipation velocity n taken from Gnedin, Ostriker (1997) -- (b). The dotted line in diagram (a) shows the "cone of survival" according to the paper by Surdin and Arkhipova (1998) . ... The solid line is a regression stright line for the main sequence of clusters, and the dotted line parallel to it separates the sequence of clusters of anomalously small mass shown by open triangles. ...
. F IGURE . 1. Relations between metallicity and other parameters of GCs and field RR Lyraes. A Sharp jump near [Fe/H] -1 is seen in all panels. discussion in the text | next figure .
. F IGURE . 2. The spatial distributions for metal rich GCs (the first column), metal-poor GCs with extremely blue HBs (the second column), and metal-poor GCs with reddened HBs (the third column). The closed curves are upper envelopes drawn by eye. discussion in the text | privious figure | next figure .
. F IGURE . 4. Properties of metal-poor subsystems of GCs with blue HBs (top row), and with redden HBs (bottom row). Notations are the same as in Fig. 3 . discussion in the text | privious figure | next figure .
. F IGURE . 5. Relations between peculiar velocity and other characteristics of the RR Lyraes. The large open circles with error bars are mean values and dispersions of the corresponding parameters in narrow intervals of Vpec . The straight lines are the least-square fits for the stars lying both on the left and on the right of Vpec 280 km/s (the vertical dotted lines). discussion in the text | privious figure | next figure .
Distant globular clusters with anomalously small masses. ... We found that 10 metal-poor globular clusters are greately distinguished for anomalously small masses on the "destruction rate-mass" plain. ... Note that 10 distant clusters of anomalously small mass selected by us proved to be younger and with an average metallicity <[Fe/H]> = -1.36 ? ... It looks as if only far from the centre of the Galaxy, conditions are created that lead to formation of globular clusters with anomalously small masses. ...
... Зависимость массы от наблюдаемого галактоцентрического расстояния R (a) и от полной скорости диссипации n , вычисленной в работе Gnedin, Ostriker (1997) (б), для 145 и 119 шаровых скоплений Галактики соответственно. ... Светлыми треугольниками выделены скопления, лежащие на Рис.1б ниже пунктирной линии. ... Светлыми значками (кружками и треугольниками) обозначены скопления, лежащие далее 15 кпк от центра Галактики. ...