scholarly journals Monitoring and analyzing exoplanetary transits from Argentina

2010 ◽  
Vol 6 (S276) ◽  
pp. 416-417
Author(s):  
Eduardo Fernández-Lajús ◽  
Yamila Miguel ◽  
Andrea Fortier ◽  
Romina P. Di Sisto
Keyword(s):  
The Other ◽  
Orbital Inclination ◽  
Stellar Radius ◽  
Orbital Parameters ◽  
Photometric Observations ◽  
First Results ◽  
Orbital Precession ◽  
In Transit ◽  
Observational Program

AbstractPhotometric observations of transits can be used to derive physical and orbital parameters of the system, like the planetary and stellar radius, orbital inclination and mean density of the star. Furthermore, monitoring possible periodic variations in transit timing of planets is important, since small changes can be caused by the presence of other planets or moons in the system. On the other hand, long term changes in the transit length can be due to the orbital precession of the planets. For these reasons we started an observational program dedicated to observe transits of known exoplanets with the aim of contributing to a better understanding of these planetary systems. In this work we present our first results obtained using the observational facilities in Argentina including the 2.15 telescope at CASLEO.

Ongoing Endings

2016 ◽  
Vol 45 (6) ◽  
pp. 673-691 ◽  
Author(s):  
Erica Vogel
Keyword(s):  
Romantic Relationships ◽  
South Korea ◽  
Migrant Workers ◽  
The Other ◽  
Global Space ◽  
In Transit

This paper explores intersecting narratives of loss and possibility through the experiences of undocumented Peruvian migrant workers who find previously unimaginable possibilities for migration and love despite—and often because of—their inability to remain in South Korea. In this global space, Peruvians are surrounded by people in transit and are inspired to create long-term plans that would be difficult, if not impossible, were they documented and permanent—such as entering into hurried romantic relationships with other migrants. Forging temporarily permanent legal ties in Korea (such as marrying other undocumented foreigners) can have tragic results, such as when marriages dissolve and one partner disappears with the children into the global realm where the other has no legal or financial means to follow. Through re-telling the narrative, both the migrant and ethnographer locate points of possibility and opportunity, and give voice to otherwise undocumented global stories.

scholarly journals The Araucaria project – improving stellar distance indicators

2004 ◽  
Vol 193 ◽  
pp. 87-90
Author(s):  
Grzegorz Pietrzyński ◽  
Wolfgang Gieren
Keyword(s):  
Variable Stars ◽  
Wide Field ◽  
Photometric Variability ◽  
First Results ◽  
Ngc 6822 ◽  
Distance Indicators ◽  
Field Imaging ◽  
Wide Field Imaging ◽  
Observational Program

AbstractWe present first results of an optical wide field imaging survey of the galaxies NGC 300, NGC 6822, WLM and Phoenix, performed as part of the Araucaria Project, a long-term observational program recently initiated at the Universidad de Concepción. Based on our data, a large number of new Cepheids in these galaxies has been found. Our photometric databases were also used to select blue supergiant candidates in these galaxies, and to search for the photometric variability of these stars, as well as for a number of side projects, such as the search of other types variable stars and OB associations in these galaxies.

scholarly journals New Photometric Observations of the Transiting Extrasolar Planet TrES-3b

2011 ◽  
Vol 7 (S282) ◽  
pp. 135-136 ◽  
Author(s):  
M. Vaňko ◽  
M. Jakubík ◽  
T. Krejčová ◽  
G. Maciejewski ◽  
J. Budaj ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Extrasolar Planet ◽  
Orbital Parameters ◽  
Term Stability ◽  
Long Term Stability ◽  
Photometric Observations

AbstractWe present new transit observations of the transiting exoplanet TrES-3b obtained in the range 2009 – 2011 at several observatories. The orbital parameters of the system were redetermined and the new linear ephemeris was calculated. We performed numerical simulations for studying the long-term stability of orbits.

scholarly journals Stellar Photometric Observations at Hα Through a Narrow-Band Interference Filter

1976 ◽  
Vol 70 ◽  
pp. 51-58
Author(s):  
Hugh E. Butler
Keyword(s):  
Narrow Band ◽  
Interference Filter ◽  
The Other ◽  
Be Stars ◽  
Strong Emission ◽  
Photometric Observations ◽  
Long Term Changes ◽  
The Doppler Effect ◽  
Photoelectric Observations

The paper describes the results of stellar photoelectric observations made with a small telescope and a 3 1/2 Å wide filter centred at Hα.The method proved to be a sensitive one for detecting change in the spectrum but did not allow differentiation between changes in the Hα profile and wavelength changes due only to the Doppler effect. It was possible, however, to recognise and qualitatively to eliminate the Doppler changes due to the Earth's Annual Motion.Of ten Be stars examined three, although in strong emission, showed little change over the periods of observation, the longest of which was 9 months. The other seven showed large and random changes.Warnings are given about the difficulty of tuning such a filter exactly to Hα and the need to monitor accurately the filter for long term changes in passband and throughput.

scholarly journals New Results from an ATCA Study of Intraday Variable Radio Sources

2002 ◽  
Vol 19 (1) ◽  
pp. 29-33 ◽  
Author(s):  
H. E. Bignall ◽  
D. L. Jauncey ◽  
L. L. Kedziora-Chudczer ◽  
J. E. J. Lovell ◽  
J.-P. Macquart ◽  
...  
Keyword(s):  
Data Analysis ◽  
Annual Cycle ◽  
Monitoring Program ◽  
Radio Sources ◽  
First Results ◽  
Observational Program ◽  
Variable Radio ◽  
Intraday Variability

AbstractWe are undertaking an observational program using the ATCA to monitor the intraday variability (IDV) of a sample of sources at 4.8 and 8.6 GHz. The sources were selected to include the known strong southern IDV sources plus a number of sources whose IDV was recently discovered. The present monitoring program will extend over a full year in order to search for any annual cycle that may be present in the long-term IDV characteristics of these sources. In this paper we discuss the observing strategy and data analysis, and present the first results from our observations.

Discussion of the Oblique Rotator Model Cases Of 108 Aqr and x Serp.

1976 ◽  
Vol 32 ◽  
pp. 577-588
Author(s):  
C. Mégessier ◽  
V. Khokhlova ◽  
T. Ryabchikova
Keyword(s):  
Mathematical Formulation ◽  
The Other ◽  
Rotator Model ◽  
Oblique Rotator ◽  
First Results

My talk will be on the oblique rotator model which was first proposed by Stibbs (1950), and since received success and further developments. I shall present two different attempts at describing a star according to this model and the first results obtained in the framework of a Russian-French collaboration in order to test the precision of the two methods. The aim is to give the best possible representation of the element distributions on the Ap stellar surfaces. The first method is the mathematical formulation proposed by Deutsch (1958-1970) and applied by Deutsch (1958) to HD 125248, by Pyper (1969) to α2CVn and by Mégessier (1975) to 108 Aqr. The other one was proposed by Khokhlova (1974) and used by her group.

Stents for the Treatment of Aortic Aneurysms

1999 ◽  
Vol 82 (S 01) ◽  
pp. 171-175 ◽  
Author(s):  
D. Ebert ◽  
M. Langer ◽  
P. Uhrmeister
Keyword(s):  
Endovascular Treatment ◽  
Endovascular Repair ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Imaging Modalities ◽  
Exclusion Criteria ◽  
Multicenter Studies ◽  
Abdominal Aortic ◽  
First Results

SummaryThe endovascular treatment of abdominal aortic aneurysms has generated a great deal of interest since the early 1990s, and many different devices are currently available. The procedure of endovascular repair has been evaluated in many institutions and the different devices are compared. The first results were encouraging, but complications like endoleak, dislocation or thrombosis of the graft occurred. By the available devices the stent application is only promising, if the known exclusion criteria are strictly respected. Therefore a careful preinterventional assessment of the patient by different imaging modalities is necessary. As the available results up to now are preliminary and the durability of the devices has to be controlled, multicenter studies are required to improve the devices and observe their long- term success in the exclusion of abdominal aortic aneurysms.

Radioimmunotherapy for treatment of acute myeloid leukaemia and myelodysplastic syndrome

2005 ◽  
Vol 44 (03) ◽  
pp. 107-117
Author(s):  
R. G. Meyer ◽  
W. Herr ◽  
A. Helisch ◽  
P. Bartenstein ◽  
I. Buchmann
Keyword(s):  
Acute Myeloid Leukaemia ◽  
Myeloid Leukaemia ◽  
Primary Tumour ◽  
The Other ◽  
Haematopoietic Stem Cell ◽  
Other Hand ◽  
Primary Reduction ◽  
The One ◽  
Acute Myeloid

SummaryThe prognosis of patients with acute myeloid leukaemia (AML) has improved considerably by introduction of aggressive consolidation chemotherapy and haematopoietic stem cell transplantation (SCT). Nevertheless, only 20-30% of patients with AML achieve long-term diseasefree survival after SCT. The most common cause of treatment failure is relapse. Additionally, mortality rates are significantly increased by therapy-related causes such as toxicity of chemotherapy and complications of SCT. Including radioimmunotherapies in the treatment of AML and myelodyplastic syndrome (MDS) allows for the achievement of a pronounced antileukaemic effect for the reduction of relapse rates on the one hand. On the other hand, no increase of acute toxicity and later complications should be induced. These effects are important for the primary reduction of tumour cells as well as for the myeloablative conditioning before SCT.This paper provides a systematic and critical review of the currently used radionuclides and immunoconjugates for the treatment of AML and MDS and summarizes the literature on primary tumour cell reductive radioimmunotherapies on the one hand and conditioning radioimmunotherapies before SCT on the other hand.

Hidden “holes” in the capital of banks and the supply of credit to the real sector of economy

2018 ◽  
pp. 49-68 ◽  
Author(s):  
M. E. Mamonov
Keyword(s):  
Credit Risk ◽  
The Other ◽  
Real Sector ◽  
Capital Management ◽  
Loan Loss ◽  
Short Term ◽  
The Real ◽  
Ex Post ◽  
The One

Our analysis documents that the existence of hidden “holes” in the capital of not yet failed banks - while creating intertemporal pressure on the actual level of capital - leads to changing of maturity of loans supplied rather than to contracting of their volume. Long-term loans decrease, whereas short-term loans rise - and, what is most remarkably, by approximately the same amounts. Standardly, the higher the maturity of loans the higher the credit risk and, thus, the more loan loss reserves (LLP) banks are forced to create, increasing the pressure on capital. Banks that already hide “holes” in the capital, but have not yet faced with license withdrawal, must possess strong incentives to shorten the maturity of supplied loans. On the one hand, it raises the turnovers of LLP and facilitates the flexibility of capital management; on the other hand, it allows increasing the speed of shifting of attracted deposits to loans to related parties in domestic or foreign jurisdictions. This enlarges the potential size of ex post revealed “hole” in the capital and, therefore, allows us to assume that not every loan might be viewed as a good for the economy: excessive short-term and insufficient long-term loans can produce the source for future losses.

Interrelationships between municipal spatial policy strategy and airport operation and development. Lodz Airport case study

2018 ◽  
Vol 59 (1) ◽  
pp. 65-79
Author(s):  
Katarzyna Nikorowicz-Zatorska
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Cultural Development ◽  
The Other ◽  
Local Authorities ◽  
Spatial Management ◽  
The One ◽  
Surrounding Areas

Abstract The present paper focuses on spatial management regulations in order to carry out investment in the field of airport facilities. The construction, upgrades, and maintenance of airports falls within the area of responsibility of local authorities. This task poses a great challenge in terms of organisation and finances. On the one hand, an active airport is a municipal landmark and drives local economic, social and cultural development, and on the other, the scale of investment often exceeds the capabilities of local authorities. The immediate environment of the airport determines its final use and prosperity. The objective of the paper is to review legislation that affects airports and the surrounding communities. The process of urban planning in Lodz and surrounding areas will be presented as a background to the problem of land use management in the vicinity of the airport. This paper seeks to address the following questions: if and how airports have affected urban planning in Lodz, does the land use around the airport prevent the development of Lodz Airport, and how has the situation changed over the time? It can be assumed that as a result of lack of experience, land resources and size of investments on one hand and legislative dissonance and peculiar practices on the other, aviation infrastructure in Lodz is designed to meet temporary needs and is characterised by achieving short-term goals. Cyclical problems are solved in an intermittent manner and involve all the municipal resources, so there’s little left to secure long-term investments.

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