scholarly journals KELT: A Wide-Field Survey of Bright Stars for Transiting Planets

2008 ◽  
Vol 4 (S253) ◽  
pp. 350-353
Author(s):  
Robert J. Siverd ◽  
Joshua Pepper ◽  
Kris Stanek ◽  
Richard W. Pogge ◽  
B. Scott Gaudi ◽  
...  
Keyword(s):  
Data Reduction ◽  
Field Survey ◽  
Candidate Selection ◽  
Wide Field ◽  
Present Survey ◽  
Transiting Planets ◽  
The Past ◽  
Initial Results ◽  
Sufficient Precision

AbstractThe Kilodegree Extremely Little Telescope (KELT) is a wide-field (26° × 26°) robotic survey telescope currently operating in Sonoita, Arizona. Assembled from commercial and off-the-shelf devices, KELT currently surveys ~40% of the Northern sky with sufficient precision to detect transiting planets around bright (8 < V < 12) stars. In the past several years of operation, over 30,000 science images have been acquired. Planet candidate selection and follow-up are currently underway. A brief overview of past and present survey operations, the data reduction pipeline, and initial results follows below.

The Carrowmore Megalithic Cemetery, Co. Sligo

1983 ◽  
Vol 49 (1) ◽  
pp. 151-175 ◽  
Author(s):  
F. T. Kitchin
Keyword(s):  
Field Survey ◽  
Present Survey ◽  
Ordnance Survey ◽  
Stone Monuments ◽  
The Past ◽  
Made In

This paper is inspired by and based upon a field survey of the Carrowmore megalithic cemetery carried out by the writer and Mr Desmond Smith, then Hon. Secretary of the Sligo Field Club, in 1972–73 and revised in 1977 following the clearance of scrub from a number of sites which had hitherto been incapable of proper examination. So far as is known, this is the first attempt at a definitive, if admittedly superficial, survey of this unique assemblage of tombs and other sites since that conducted by Col. W. G. Wood-Martin almost a century ago and recorded in The Rude Stone Monuments of Ireland (1888). The only other definitive survey was that made in 1837 by George Petrie, archaeologist to the Ordnance Survey, and recorded in the Ordnance Survey Letters for County Sligo. In addition, Petrie prepared a map of the area of the cemetery (unfortunately not reproduced in the Ordnance Survey letters) in which he marked and numbered all sites to his knowledge then extant. This map was revised and used by Wood-Martin and it is on this later version that the identification of sites in the present survey is based.A fairly close acquaintance with Carrowmore over the past twenty years or so has encouraged the conviction that the problems posed are of greater variety and complexity than have up to now been acknowledged.

scholarly journals In Pursuit of the Least Luminous Galaxies

2010 ◽  
Vol 2010 ◽  
pp. 1-11 ◽  
Author(s):  
Beth Willman
Keyword(s):  
Dark Matter ◽  
Milky Way ◽  
Field Survey ◽  
Dwarf Galaxies ◽  
Dwarf Galaxy ◽  
Wide Field ◽  
Dark Matter Halos ◽  
The Past ◽  
Luminous Galaxies ◽  
Host Stars

The dwarf galaxy companions to the Milky Way are unique cosmological laboratories. With luminosities as low as10−7LMW, they inhabit the lowest mass dark matter halos known to host stars and are presently the most direct tracers of the distribution, mass spectrum, and clustering scale of dark matter. Their resolved stellar populations also facilitate detailed studies of their history and mass content. To fully exploit this potential requires a well-defined census of virtually invisible galaxies to the faintest possible limits and to the largest possible distances. I review the past and present impacts of survey astronomy on the census of Milky Way dwarf galaxy companions and discuss the future of finding ultra-faint dwarf galaxies around the Milky Way and beyond in wide-field survey data.

scholarly journals Search for Transiting Exoplanets with HATNet

2008 ◽  
Vol 4 (S253) ◽  
pp. 21-27
Author(s):  
G. Á. Bakos ◽  
R. W. Noyes ◽  
G. Kovács ◽  
D. W. Latham ◽  
G. Torres ◽  
...  
Keyword(s):  
High Resolution ◽  
Extrasolar Planets ◽  
Detection Efficiency ◽  
False Alarms ◽  
Wide Field ◽  
Transiting Planets

AbstractHATNet is a network of six identical, fully automated wide field telescopes, four of which are located in Arizona, and two at Hawaii. The purpose of the network is to search for transiting extrasolar planets around relatively bright stars (8 <I< 12). The longitudinal coverage of 3.5 hours greatly enhances transit detection efficiency. HATNet has been operational since 2004, and has taken more than 1/2 million science frames at 5-min integrations, covering about 7% of the sky. Photometric precision reaches 3mmag rms at 5.5 min cadence atI≈ 8, and is 1% atI≈ 11.3. Hundreds of transitcandidateshave been detected in the data, and have been subject to vigorous follow-up by various 1m-class facilities, both spectroscopy and follow-up photometry. A fraction of the candidates that have survived these steps as not being false alarms have been observed by high resolution and precision spectrographs (primarily Keck/HIRES), to confirm their planetary nature and characterize their properties. So far nine transiting planets have been reported, making HATNet a very successful survey.

scholarly journals A search for transiting planets in the Galactic Plane

2008 ◽  
Vol 4 (S253) ◽  
pp. 343-345
Author(s):  
Veronica R. Miller ◽  
Michael D. Albrow
Keyword(s):  
Extrasolar Planets ◽  
Galactic Plane ◽  
Wide Field ◽  
Transiting Planets ◽  
Deep Survey ◽  
Initial Results

AbstractWe are carrying out a deep survey for transiting extrasolar planets in a 1 square degree field in the Galactic Plane. The images to date were taken using the Wide Field Imager on the ESO 2.2m telescope at La Silla. We present details of the analysis and initial results from the survey.

scholarly journals A closer look at amputees in Vietnam: A field survey of Vietnamese using prostheses

1999 ◽  
Vol 23 (2) ◽  
pp. 93-101 ◽  
Author(s):  
S. L. Matsen
Keyword(s):  
Developing Countries ◽  
Social Interactions ◽  
Field Survey ◽  
Assessment Tool ◽  
Demographic Groups ◽  
The Past ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Provision Of Care

This study aims to improve the quality and effectiveness of follow-up data on prosthetics in developing countries. In order to bridge the gap between members of non-governmental organizations and their international patients, a field survey was conducted via direct interviews in Vietnam. Eighty-three (83) patients in 5 different geographic regions were interviewed using a standardized assessment tool designed by the author. Demographic information, questions of prosthetic history, inquiries into function, lifestyle and occupation, and queries of social and family integration were asked of each patient. While the overall results prove salutary for those who serve the amputees of developing countries, it is clear that amputation presents a substantial challenge to the Vietnamese patient. On one hand, respondents wore their prostheses over 12 hours each day on average, rated their prostheses as quite comfortable, and were altogether satisfied with their prosthetic treatment. In addition, the provision of care for Vietnamese with amputations has improved markedly over the past few decades. On the other hand, many patients related the barriers they encountered due to their amputation, including their departure from previous careers, inability to perform rigorous physical activities, and difficulties with social interactions. Furthermore, discrepancies in care were noted between demographic groups and amongst different regions. The questionnaire developed for this study may provide a useful evaluative tool for agencies working throughout the developing world. The use of such a standardized questionnarie could greatly improve the evaluation and comparison of prosthetic programmes and help guide the efforts of such organizations in developing countries.

scholarly journals The WASP transit surveys

2008 ◽  
Vol 4 (S253) ◽  
pp. 29-35 ◽  
Author(s):  
Andrew Collier Cameron ◽  
Don Pollacco ◽  
Coel Hellier ◽  
Richard West ◽  
Keyword(s):  
System Performance ◽  
Physical Characteristics ◽  
Candidate Selection ◽  
Field Of View ◽  
Wide Field ◽  
Selection Procedures ◽  
La Palma ◽  
Camera Arrays ◽  
Right Ascension

AbstractThe WASP consortium operates two wide-field camera arrays in the northern (La Palma) and southern (Sutherland) hemispheres. Each installation comprises a robotic mount bearing 8 cameras, forming a mosaic with a field of view of 30 degrees in declination by 1 hour in right ascension. Here we describe the system performance, observing strategy, candidate selection procedures and follow-up campaigns, and the yield and physical characteristics of the 16 planets discovered in the course of the survey to date.

scholarly journals From Asteroids to Space Debris

2015 ◽  
Vol 10 (S318) ◽  
pp. 324-326 ◽  
Author(s):  
Zouhair Benkhaldoun ◽  
Hong-Kyu Moon ◽  
Ahmed Daassou ◽  
Jang-Hyun Park ◽  
Mohamed Lazrek
Keyword(s):  
Space Debris ◽  
Primary Objective ◽  
Wide Field ◽  
National Space ◽  
The Past ◽  
Sky Survey ◽  
Transient Events ◽  
Field Imaging ◽  
Wide Field Imaging

AbstractSince 2011, Oukaimeden Observatory (OUCA) has become one of the active NEO search facilities in the word. Its discovery statistics shows that the MOSS (Morocco Oukaimeden Sky Survey) project received credits for more than 2,145 new designations, including 3 NEOs and 4 comets. Its excellent astro-climactic characteristics are partly behind the success. The average number of observable nights is around 280 nights per year, while median seeing is 0.8-0.9 arcsec. We completed construction of a new telescope at the site in March 2015. It is Optical Wide-field Patrol (OWL) facility designed and built by Korea Space Science Institute (KASI). The primary objective of this facility is to monitor national space assets of Korea; either wide-field imaging- or fast data acquisition- capabilities enable the 0.5m telescope to conduct observation programs to catalog and follow-up various transient events in the night sky. We present the seeing condition, the OWL system and preliminary results obtained at OWL@Oukaimeden during the past several months.

Penile Lymphoepithelioma-Like Carcinoma: A Rare Case With PD-L1 Expression

2021 ◽  
pp. 106689692098834
Author(s):  
Raquel Machado-Neves ◽  
Bernardo Teixeira ◽  
Elsa Fonseca ◽  
Pedro Valente ◽  
Joaquim Lindoro ◽  
...  
Keyword(s):  
Human Papillomavirus ◽  
Tumor Cells ◽  
Rare Case ◽  
Malignant Tumors ◽  
Squamous Cell Carcinomas ◽  
The Third ◽  
The Past ◽  
First Case ◽  
Lymphoplasmacytic Infiltrate

Most malignant tumors of the penis are squamous cell carcinomas (SCC), being divided in 2 groups, one human papillomavirus (HPV)-related and another non-HPV-related, with lymphoepithelioma-like carcinoma (LELC) being one of the rarest HPV-related SCC. In this article, we report a case of a 50-year-old man who presented testicular swelling and pain for the past 3 months. A penile mass was identified, and the patient was submitted to a total penectomy. The penectomy specimen showed an ulcerated lesion at the glans reaching the cavernous bodies. Microscopic examination showed undifferentiated epithelial cells with syncytial growth pattern mix with a dense lymphoplasmacytic infiltrate, consistent with LELC. The tumor cells expressed p16 and all 3 different clones of PDL1 (22C3, SP263, and SP142). The patient is alive and well with a follow-up of 3 months. To our knowledge, this is the third LELC of the penis reported in literature and the first case reported with PDL1 expression.

scholarly journals Processing GOTO data with the Rubin Observatory LSST Science Pipelines I: Production of coadded frames

2021 ◽  
Vol 38 ◽  
Author(s):  
J. R. Mullaney ◽  
L. Makrygianni ◽  
V. Dhillon ◽  
S. Littlefair ◽  
K. Ackley ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Time Domain ◽  
Wide Area ◽  
Wide Field ◽  
Process Data ◽  
Data Production ◽  
The Time Domain ◽  
Further Development ◽  
High Cadence

Abstract The past few decades have seen the burgeoning of wide-field, high-cadence surveys, the most formidable of which will be the Legacy Survey of Space and Time (LSST) to be conducted by the Vera C. Rubin Observatory. So new is the field of systematic time-domain survey astronomy; however, that major scientific insights will continue to be obtained using smaller, more flexible systems than the LSST. One such example is the Gravitational-wave Optical Transient Observer (GOTO) whose primary science objective is the optical follow-up of gravitational wave events. The amount and rate of data production by GOTO and other wide-area, high-cadence surveys presents a significant challenge to data processing pipelines which need to operate in near-real time to fully exploit the time domain. In this study, we adapt the Rubin Observatory LSST Science Pipelines to process GOTO data, thereby exploring the feasibility of using this ‘off-the-shelf’ pipeline to process data from other wide-area, high-cadence surveys. In this paper, we describe how we use the LSST Science Pipelines to process raw GOTO frames to ultimately produce calibrated coadded images and photometric source catalogues. After comparing the measured astrometry and photometry to those of matched sources from PanSTARRS DR1, we find that measured source positions are typically accurate to subpixel levels, and that measured L-band photometries are accurate to $\sim50$ mmag at $m_L\sim16$ and $\sim200$ mmag at $m_L\sim18$ . These values compare favourably to those obtained using GOTO’s primary, in-house pipeline, gotophoto, in spite of both pipelines having undergone further development and improvement beyond the implementations used in this study. Finally, we release a generic ‘obs package’ that others can build upon, should they wish to use the LSST Science Pipelines to process data from other facilities.

scholarly journals O21 The incidence of COVID-19 among children with rheumatic diseases receiving biological agents

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_1) ◽  
Author(s):  
Nadezhda Tsurikova ◽  
Elena Ligostaeva ◽  
Vadim Avdeenko ◽  
Nataliya Kobzeva ◽  
Irina Tsiganok ◽  
...  
Keyword(s):  
Rheumatic Diseases ◽  
Lupus Erythematosus ◽  
Biological Agents ◽  
Tnf Receptor ◽  
The Past ◽  
Different Types ◽  
Mediterranean Fever ◽  
Positive Results ◽  
Single Center Observational Study

Abstract Background/Aims  During the COVID-19 pandemic, analysis of the incidence of COVID-19 among patients suffering from rheumatic diseases and receiving therapy with biological agents remains relevant. Methods  This single-center observational study included 118 children suffering from various rheumatic diseases and receiving therapy with anti-rheumatic drugs and biological agents. In this research, we analyzed the incidence of CIVID-19 and the frequency of documented contact with SARS-CoV-2 in the period from 01.03.2020 to 11.10.2020 (32 weeks). The results were analyzed using descriptive statistics. Results  Among 118 children, there were 28 (24%) boys and 90 (76%) girls, average age 10.3±4.2. 104 (88.2%) patients had different types of juvenile idiopathic arthritis (JIA), 2 (1.6%) children had systemic lupus erythematosus (SLE), 2 (1.6%) patients had juvenile dermatomyositis (JDM), 1 (1%) child had ANCA-associated vasculitis, 6 (5%) patients had familial Mediterranean fever (FMF), 2 (1.6%) children had deficiency of adenosine deaminase 2 (DADA2), 1 (1%) child had TNF receptor-associated periodic syndrome (TRAPS). In this group of patients 94 (79%) patients were treated with methotrexate, 1 (1%) - azathioprine, 3 (2%) patients received hydroxychloroquine, 6(5%) - mycophenolate mofetil, 4 (3%) - sulfasalazine, 14(11%) children received prednisone, 6(5%) - cyclosporine A. All children included in this study received biological agents for more than 1 year, the distribution of biological agents among patients was as follows: 41(34%) - etanercept, 33(28%) - adalimumab, 24 (20%) - tocilizumab, 7 (6%) - canakinumab, 3 (2%) - abatacept, 4 (3%) - golimumab, 6 (5%) - rituximab. Out of 118 children, 4 (3%) patients had flu-like symptoms and positive results of PCR tests for COVID-19 (1 patient was treated with etanercept, 1 - adalimumab, 1 - tocilizumab, 1 - rituximab), none of the patients had signs of SARS-CoV-2 pneumonia. 10 (8%) patients had documented contact with COVID-19: among this patients 2 children had flu-like symptoms, positive results of PCR tests and absence of COVID-19 pneumonia (one of this patient was treated with adalimumab, another one - with rituximab), one more patient was treated with tocilizumab and had positive PCR test without any symptoms of COVID-19; other 7 children had negative PCR tests and didn’t have any signs of COVID-19. Conclusion  Among our patients with various rheumatic diseases treated with biological agents there were no registered severe cases of COVID-19. Over the past period (32 weeks of follow-up) 3% of children with COVID-19 were identified and 8% patients had documented contact with COVID-19, but we suppose it is too early to make conclusions about the degree and severity of COVID-19 among children suffering from rheumatic diseases and receiving various biological agents. Further follow-up is needed to better understand the risk and impact of COVID-19 among children with rheumatic diseases and receiving therapy with biological agents. Disclosure  N. Tsurikova: None. E. Ligostaeva: None. V. Avdeenko: None. N. Kobzeva: None. I. Tsiganok: None. K. Skorobogatova: None. A. Motkina: None.

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