Photometric Reverberation Mapping of AGNs at 0.1 < z <0.8. I. Observational Technique

AbstractReduction techniques as applied to astrometric data material tend to split up traditionally into at least two different classes according to the observational technique used, namely transit circle observations and photographic observations. Although it is not realized fully in practice at present, the application of a blockadjustment technique for all kind of catalogue reductions is suggested. The term blockadjustment shall denote in this context the common adjustment of the principal unknowns which are the positions, proper motions and certain reduction parameters modelling the systematic properties of the observational process. Especially for old epoch catalogue data we frequently meet the situation that no independent detailed information on the telescope properties and other instrumental parameters, describing for example the measuring process, is available from special calibration observations or measurements; therefore the adjustment process should be highly self-calibrating, that means: all necessary information has to be extracted from the catalogue data themselves. Successful applications of this concept have been made already in the field of aerial photogrammetry.

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Studying the Use of Public Spaces in the Library

Proceedings of the Annual Conference of CAIS / Actes du congrès annuel de l'ACSI ◽

10.29173/cais582 ◽

2013 ◽

Author(s):

Francine May

Keyword(s):

Canadian Journal ◽

Public Spaces ◽

Library Science ◽

Full Paper ◽

Public Places ◽

The Public ◽

Observational Technique ◽

Mental Mapping ◽

Mapping Observation

Methods for studying the public places of libraries, including mental mapping, observation and patron mapping are reviewed. Reflections on the experience of adapting an observational technique for use in multiple different library spaces are shared. Sont passées en revue les méthodes pour étudier la place publique des bibliothèques, y compris les représentations mentales, l’observation et la catégorisation des usagers. L’auteure partage ses réflexions sur l’expérience d’adapter une technique d’observation à différents espaces de bibliothèque. ***Full paper in the Canadian Journal of Information and Library Science***

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Diverticulization Duodenal Distal Technique for Injury Angle Duodenojejunal

Open Medicine Journal ◽

10.2174/1874220301603010265 ◽

2016 ◽

Vol 3 (1) ◽

pp. 265-268

Author(s):

Luis R. Martinez ◽

Pablo Valsangiacomo ◽

Gabriela Espinosa ◽

Gabriela Wagner ◽

Roberto Taruselli

Keyword(s):

Case Series ◽

Average Hospital ◽

Single Anastomosis ◽

Observational Technique ◽

Mortality Case ◽

Management Techniques ◽

The Right ◽

Serious Injuries ◽

Suture Failure ◽

Initial Results

Duodenojejunal injuries region at the angle of Treitz are rare, variable etiology and often associated with other serious injuries. In trauma situations with perforations and bleeding, his approach is often difficult. The primary suture, resection / anastomosis and duodenal exclusion are the usual for trauma management techniques in this region. The aim of this paper is to show the initial results of an alternative for injuries duodenojejunal angle (IDJA) by filling a retrospective, descriptive and observational technique, 12 patients operated were analyzed over a period of 15 years, carriers IDJA, age: 34, 11 gunshot wound. 92% of the cases had other associated visceral injuries. The average for the ISS was 29. In all cases located in duodenum duodenojejunoanastomosis II, via the right lateromesenterica upon closing section and duodenum level III was performed. 58% of cases were complicated. Mortality case series were 1 (8%) digestive suture failure colon. Average Hospital stay 26 days. Conclusion: A simple, safe and maintaining gut physiology is proposed technique; with a single anastomosis, located in well-vascularized area and away from bruising and contaminated areas. The complications were pancreatic fistula and digestive suture failure.

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The Kinematics of Quasar Broad Emission Line Regions Using a Disk-Wind Model

Publications of the Astronomical Society of Australia ◽

10.1017/pasa.2017.37 ◽

2017 ◽

Vol 34 ◽

Cited By ~ 5

Author(s):

Suk Yee Yong ◽

Rachel L. Webster ◽

Anthea L. King ◽

Nicholas F. Bate ◽

Matthew J. O’Dowd ◽

...

Keyword(s):

Emission Line ◽

Line Profile ◽

Inclination Angle ◽

Opening Angle ◽

Line Profiles ◽

Wind Model ◽

Disk Wind ◽

Reverberation Mapping ◽

Broad Emission ◽

Line Region

AbstractThe structure and kinematics of the broad line region in quasars are still unknown. One popular model is the disk-wind model that offers a geometric unification of a quasar based on the viewing angle. We construct a simple kinematical disk-wind model with a narrow outflowing wind angle. The model is combined with radiative transfer in the Sobolev, or high velocity, limit. We examine how angle of viewing affects the observed characteristics of the emission line. The line profiles were found to exhibit distinct properties depending on the orientation, wind opening angle, and region of the wind where the emission arises.At low inclination angle (close to face-on), we find that the shape of the emission line is asymmetric, narrow, and significantly blueshifted. As the inclination angle increases (close to edge-on), the line profile becomes more symmetric, broader, and less blueshifted. Additionally, lines that arise close to the base of the disk wind, near the accretion disk, tend to be broad and symmetric. Single-peaked line profiles are recovered for the intermediate and equatorial wind. The model is also able to reproduce a faster response in either the red or blue sides of the line profile, consistent with reverberation mapping studies.

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Toward Precision Measurement of Central Black Hole Masses

Proceedings of the International Astronomical Union ◽

10.1017/s1743921310006095 ◽

2009 ◽

Vol 5 (S267) ◽

pp. 151-160 ◽

Cited By ~ 4

Author(s):

Bradley M. Peterson

Keyword(s):

Black Holes ◽

Black Hole ◽

Host Galaxy ◽

Reverberation Mapping ◽

Line Region ◽

The Masses ◽

The Relationship ◽

Black Hole Masses ◽

Intrinsic Scatter ◽

Direct And Indirect Methods

AbstractWe review briefly direct and indirect methods of measuring the masses of black holes in galactic nuclei, and then focus attention on supermassive black holes in active nuclei, with special attention to results from reverberation mapping and their limitations. We find that the intrinsic scatter in the relationship between the AGN luminosity and the broad-line region size is very small, ~0.11 dex, comparable to the uncertainties in the better reverberation measurements. We also find that the relationship between reverberation-based black hole masses and host-galaxy bulge luminosities also seems to have surprisingly little intrinsic scatter, ~0.17 dex. We note, however, that there are still potential systematics that could affect the overall mass calibration at the level of a factor of a few.

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Restframe UV-to-optical spectroscopy of APM 08279+5255

Astronomy and Astrophysics ◽

10.1051/0004-6361/201832794 ◽

2018 ◽

Vol 617 ◽

pp. A118 ◽

Cited By ~ 4

Author(s):

F. G. Saturni ◽

M. Bischetti ◽

E. Piconcelli ◽

A. Bongiorno ◽

C. Cicone ◽

...

Keyword(s):

Emission Lines ◽

Magnification Factor ◽

Uv Spectrum ◽

Reverberation Mapping ◽

Broad Absorption Line ◽

Near Ir ◽

A Value ◽

High Ionization ◽

Single Epoch ◽

Absorption Features

We present the analysis of the restframe optical-to-UV spectrum of APM 08279+5255, a well-known lensed broad absorption line (BAL) quasar at z = 3.911. The spectroscopic data were taken with the optical DOLoRes and near-IR NICS instruments at TNG, and include the previously unexplored range between C III] λ1910 and [O III] λλ4959,5007. We have investigated the possible presence of multiple BALs by computing “balnicity” and absorption indexes (i.e., BI, BI0, and AI) for the transitions Si IV λ1400, C IV λ1549, Al III λ1860, and Mg II λ2800. No clear evidence for the presence of absorption features is found in addition to the already known, prominent BAL associated to C IV, which supports a high-ionization BAL classification for APM 08279+5255. We also studied the properties of the [O III], Hβ, and Mg II emission lines. We find that [O III] is intrinsically weak (F[OIII]∕FHβ ≲ 0.04), as it is typically found in luminous quasars with a strongly blueshifted C IV emission line (~2500 km s−1 for APM 08279+5255). We computed the single-epoch black hole mass based on Mg II and Hβ broad emission lines, finding MBH = (2 ÷ 3) × 1010μ−1 M⊙, with the magnification factor μ that can vary between 4 and 100 according to CO and restframe UV-to-mid-IR imaging respectively. Using a Mg II equivalent width (EW)-to-Eddington ratio relation, the EWMgII ~ 27 Å measured for APM 08279+5255 translates into an Eddington ratio of ~0.4, which is more consistent with μ = 4. This magnification factor also provides a value of MBH that is consistent with recent reverberation-mapping measurements derived from C IV and Si IV.

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