1,726,620 research outputs found
Photometric study of the young open cluster NGC 3293
Full text linkDeep and extensive CCD photometric observations at UBV(RI)cHα were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to Mv ≈ +4.5, revealing that stars with Mv +2 are placed above it. According to our analysis, the cluster distance is d = 2750 ± 250 pc (V0 - Mv = 12.2 ± 0.2) and its nuclear age is 8 ± 1 Myr. NGC 3293 contains an important fraction of pre-main sequence (PMS) stars distributed along a parallel band to the ZAMS with masses from 1 to 2.5 M⊙ and a mean contraction age of 10 Myr. This last value does not differ too much from the nuclear age estimate. If we take into account the many factors that may affect the PMS star positions on the colour-magnitude diagram, both ages can be perfectly reconciled. The star formation rate, on the other hand, suggests that NGC 3293 stars formed surely in one single event, therefore favouring a coeval process of star formation. Using the Hα data, we detected nineteen stars with signs of Hα emission in the region of NGC 3293, another indication that the star formation process is still active in the region. The computed initial mass function for the cluster has a slope of x = 1.2 ± 0.2. a bit flatter than the typical slope for field stars and similar to the values found for other young open clusters.Facultad de Ciencias Astronómicas y Geofísica
Wellington writing the Waterloo despatch [picture] /
No full text"The background represents the room where the remains of Sir A. Gordon were lying, with the morning light breaking."; Rex Nan Kivell Collection NK 3293.; U7135
Photometric study of the young open cluster NGC 3293
Full text linkDeep and extensive CCD photometric observations at were
carried out in the area of the open cluster NGC 3293. The new data set allows
to see the entire cluster sequence down to , revealing that
stars with are evolving off the main sequence; stars with are
placed above it. According to our analysis, the cluster distance is ±
( ±
0.2) and its nuclear age is
8 ±
1 Myr. NGC 3293 contains an important fraction of pre–main sequence
(PMS) stars distributed along a parallel band to the ZAMS with masses from 1
to and a mean contraction age of 10 Myr. This last value
does not differ too much from the nuclear age estimate. If we take
into account the many factors that may affect the PMS star positions on the
colour–magnitude diagram, both ages can be perfectly reconciled. The star
formation rate, on the other hand, suggests that NGC 3293 stars formed surely
in one single event, therefore favouring a coeval process of star formation.
Using the data, we detected nineteen stars with signs of
emission in the region of NGC 3293, another
indication that the star formation process is still active in the region. The
computed initial mass function for the cluster has a slope of , a bit flatter than the typical slope for field stars and similar to the
values found for other young open clusters
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
SK Dekan FK Unand No. 3293/UN.16.2/D/PP/PSPPB/2020 tanggal 28 Desember 2020
Full text linkSK Dekan FK Unand No. 3293/UN.16.2/D/PP/PSPPB/2020 tanggal 28 Desember 202
Trends in de links-rechts oriëntatie van de Nederlandse kiezers 1978-1995
Full text linkContains fulltext :
3293.pdf (Publisher’s version ) (Open Access
Atmospheric parameters and chemical composition of β Cephei stars in the open cluster NGC 3293
No full textWe introduce a new project concerning the spectroscopic analysis of beta~Cephei stars in open clusters. The high-resolution, high signal-to-noise observations were collected for beta~Cephei stars and comparison non-pulsating stars in NGC~3293, NGC~4755, NGC~6231, NGC~6910 and NGC~884. These data allow us to obtain atmospheric parameters (effective temperature, surface gravity, microturbulence), chemical abundances and rotational velocities of all analysed objects. Here we present the preliminary results for six pulsating stars in NGC~3293
Baptist Young People\u27s Union of America (SC 3293)
Full text linkFinding aid only for Manuscripts Small Collection 3293. Report of the Senior Baptist Young People’s Union of the Campbellsville Baptist Church, Campbellsville, Kentucky, in the Russell Creek Association, for the quarter ending 28 March 1926. The one-page form lists officers and provides brief details of organization and operation
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
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