1,723,258 research outputs found
NGC-5982 - A SMOOTH TRIAXIAL ELLIPTIC
No full textNGC 5982 is known to be one of those elliptical galaxies that have peculiar kinematics in their centres. In this paper, optical spectroscopic observations are presented, which show that a specific feature is present in the velocity field of NGC 5982. This suggests that the kinematical behaviour is the result of projection effects in a dynamically smooth triaxial elliptical galaxy, and that it is not due to a dynamically distinct, central mass component. Nevertheless, we suggest that it may be related to a merger event.</p
NGC-5982 - A SMOOTH TRIAXIAL ELLIPTIC
No full textNGC 5982 is known to be one of those elliptical galaxies that have peculiar kinematics in their centres. In this paper, optical spectroscopic observations are presented, which show that a specific feature is present in the velocity field of NGC 5982. This suggests that the kinematical behaviour is the result of projection effects in a dynamically smooth triaxial elliptical galaxy, and that it is not due to a dynamically distinct, central mass component. Nevertheless, we suggest that it may be related to a merger event
NGC-5982 - A SMOOTH TRIAXIAL ELLIPTIC
No full textNGC 5982 is known to be one of those elliptical galaxies that have peculiar kinematics in their centres. In this paper, optical spectroscopic observations are presented, which show that a specific feature is present in the velocity field of NGC 5982. This suggests that the kinematical behaviour is the result of projection effects in a dynamically smooth triaxial elliptical galaxy, and that it is not due to a dynamically distinct, central mass component. Nevertheless, we suggest that it may be related to a merger event.</p
A new supplement for lines 31–32 of the Theramenes papyrus (P.Mich. 5982)
No full textThis paper discusses scholarly supplements of lines 31-32 of the so-called Theramenes papyrus (P.Mich 5982 + P.Mich 5796b), and presents a new supplement on the basis of literary and stylistic considerations. Moreover, stylistic features suggest that the author of the Theramenes papyrus might be the same of the Hellenica Oxyrhynchia
Spatial distribution of dust in the shell elliptical NGC 5982
Full text linkAims. Shells in Ellipticals are peculiar faint sharp edged features that are thought to be formed by galaxy mergers. We determine the shell and dust distributions, and colours of a well-resolved shell and the underlying galaxy in NGC 5982, and compare the spatial distributions of the dust and gas phases, in order to investigate the origin of shells and dust in NGC 5982. Methods. We use Spitzer data in the wavelength range from 3.6 to 160 mu m and HST/ACS optical data. Surface photometry, galaxy models and residual images are determined using IRAF task ELLIPSE and GALPHOT task ELLIPFIT. After subtracting the galaxy models, residual images are used to identify the shells. Excess emission is identified by subtracting a scaled stellar photosphere emission template. Colours [3.6]-[4.5], [3.6]-[8.0] and [5.8]-[8.0] of the underlying galaxy and [5.8]-[8.0] of the excess emission are obtained using techniques similar to those of Pahre et al. The [3.6]-[4.5] and V -I colours of a well-resolved shell are determined using techniques of Sikkema et al. Results. Shells are visible in the 3.6 mu m image, fainter at 4.5 mu m and undetected at 5.8 mu m. We find two new shells, the outermost identified so far in NGC 5982. All shells apart from shell 24 are on the photometric major axis. Shell 24 is the only one for which reliable colours are obtained. It has colours [3.6]-[4.5] and V - I bluer than the underlying galaxy. Excess emission at 4.5, 5.8 and 8 mu m is widely extended. The ratio of excess to total emission decreases towards the centre, which could be related to a lower mass loss rate from AGB stars. The [3.6]-[4.5] colour indicates a major contribution from late-type (K2-M0III) stars towards the centre. Dust traced by 24 mu m emission follows the stellar spatial distribution, supporting a circumnuclear origin. We find extended 160 mu m emission from cold dust, possibly forming a disk inclined to the principal axes, with a mass of a few 10(5) M-circle dot. The warmer big grains and/or smaller grains traced by the 70 mu m emission are confined to a small region elongated along the minor axis and shifted a few kpc from the centre. Conclusions. We detect for the first time shells from mid-infrared data. The very different distributions of dust, warm gas and HI gas together with the presence of shells and a kinematically decoupled core suggest a minor merger in NGC 5982
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The affection of law no. 5982 constitutional amendment on the concept of “rule of law” of 1982 constitution
Full text linkSiyasî iktidarın sınırlandırılmasına dayanan hukuk devletinin, biçimsel ve maddî olmak üzere iki boyutu bulunmaktadır. 1982 Anayasası biçimsel hukuk devletinin temel koşullarını öngörse de hukuk devleti anlayışı ile bağdaşmayan eksikliklere sahiptir. Yapılan anayasa değişiklikleri bu sıkıntıyı belli ölçüde giderilebilmiştir. Ancak 5982 Sayılı Anayasa Değişikliği Kanunu da bu eksiklikleri bütünüyle ortadan kaldıramamıştır.The rule of law has procedural and substantive dimensions. The procedural dimension takes place in the 1982 Constitution which has serious deficiencies. Even though these deficiencies has partly removed by Law no. 5982, it cannot be claimed that the deficiencies have been completely overcome by the amendment
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