bluuebunny/crossref_metadata_2025_split huggingface dataset:
SEEDS DIRECT IMAGING OF THE RV-DETECTED COMPANION TO V450 ANDROMEDAE, AND CHARACTERIZATION OF THE SYSTEM
Authors: Hełminiak K. G. , Kuzuhara M. , Mede K. , Brandt T. D. , Kandori R. , Suenaga T. , Kusakabe N. , Narita N. , Carson J. C. , Currie T. , Kudo T. , Hashimoto J. , Abe L. , Akiyama E. , Brandner W. , Feldt M. , Goto M. , Grady C. A. , Guyon O. , Hayano Y. , Hayashi M. , Hayashi S. S. , Henning T. , Hodapp K. W. , Ishii M. , Iye M. , Janson M. , Knapp G. R. , Kwon J. , Matsuo T. , McElwain M. W. , Miyama S. , Morino J.-I. , Moro-Martin A. , Nishimura T. , Ryu T. , Pyo T.-S. , Serabyn E. , Suto H. , Suzuki R. , Takahashi Y. H. , Takami M. , Takato N. , Terada H. , Thalmann C. , Turner E. L. , Watanabe M. , Wisniewski J. , Yamada T. , Takami H. , Usuda T. , Tamura M. 
Published: November 2016

ABSTRACT
We report the direct imaging detection of a low-mass companion to a young, moderately active star V450 And, that was previously identified with the radial velocity (RV) method. The companion was found in high-contrast images obtained with the Subaru Telescope equipped with the HiCIAO camera and AO188 adaptive optics system. From the public ELODIE and SOPHIE archives we extracted available high-resolution spectra and RV measurements, along with RVs from the Lick planet search program. We combined our multi-epoch astrometry with these archival, partially unpublished RVs, and found that the companion is a low-mass star, not a brown dwarf, as previously suggested. We found the best-fitting dynamical masses to be

and

. We also performed spectral analysis of the SOPHIE spectra with the iSpec code. Hipparcos time-series photometry shows a periodicity of P = 5.743 day, which is also seen in the SOPHIE spectra as an RV modulation of the star A. We interpret it as being caused by spots on the stellar surface, and the star to be rotating with the given period. From the rotation and level of activity, we found that the system is

Myr old, consistent with an isochrone analysis (

Myr). This work may serve as a test case for future studies of low-mass stars, brown dwarfs, and exoplanets by combination of RV and direct imaging data.
RELATIVISTIC CYCLOTRON INSTABILITY IN ANISOTROPIC PLASMAS
Authors: López Rodrigo A. , Moya Pablo S. , Navarro Roberto E. , Araneda Jaime A. , Muñoz Víctor , Viñas Adolfo F. , Valdivia J. Alejandro 
Published: November 2016

ABSTRACT
A sufficiently large temperature anisotropy can sometimes drive various types of electromagnetic plasma micro-instabilities, which can play an important role in the dynamics of relativistic pair plasmas in space, astrophysics, and laboratory environments. Here, we provide a detailed description of the cyclotron instability of parallel propagating electromagnetic waves in relativistic pair plasmas on the basis of a relativistic anisotropic distribution function. Using plasma kinetic theory and particle-in-cell simulations, we study the influence of the relativistic temperature and the temperature anisotropy on the collective and noncollective modes of these plasmas. Growth rates and dispersion curves from the linear theory show a good agreement with simulations results.
THE PAN-STARRS1 DISTANT z > 5.6 QUASAR SURVEY: MORE THAN 100 QUASARS WITHIN THE FIRST GYR OF THE UNIVERSE
Authors: Bañados E. , Venemans B. P. , Decarli R. , Farina E. P. , Mazzucchelli C. , Walter F. , Fan X. , Stern D. , Schlafly E. , Chambers K. C. , Rix H-W. , Jiang L. , McGreer I. , Simcoe R. , Wang F. , Yang J. , Morganson E. , Rosa G. De , Greiner J. , Baloković M. , Burgett W. S. , Cooper T. , Draper P. W. , Flewelling H. , Hodapp K. W. , Jun H. D. , Kaiser N. , Kudritzki R.-P. , Magnier E. A. , Metcalfe N. , Miller D. , Schindler J.-T. , Tonry J. L. , Wainscoat R. J. , Waters C. , Yang Q. 
Published: November 2016

ABSTRACT
Luminous quasars at

can be studied in detail with the current generation of telescopes and provide us with unique information on the first gigayear of the universe. Thus far, these studies have been statistically limited by the number of quasars known at these redshifts. Such quasars are rare, and therefore, wide-field surveys are required to identify them, and multiwavelength data are required to separate them efficiently from their main contaminants, the far more numerous cool dwarfs. In this paper, we update and extend the selection for the

quasars presented in Bañados et al. (2014) using the Pan-STARRS1 (PS1) survey. We present the PS1 distant quasar sample, which currently consists of 124 quasars in the redshift range

that satisfy our selection criteria. Of these quasars, 77 have been discovered with PS1, and 63 of them are newly identified in this paper. We present the composite spectra of the PS1 distant quasar sample. This sample spans a factor of ∼20 in luminosity and shows a variety of emission line properties. The number of quasars at

presented in this work almost doubles the previously known quasars at these redshifts, marking a transition phase from studies of individual sources to statistical studies of the high-redshift quasar population, which was impossible with earlier, smaller samples.
HERUS: A CO ATLAS FROM SPIRE SPECTROSCOPY OF LOCAL ULIRGs
Authors: Pearson Chris , Rigopoulou Dimitra , Hurley Peter , Farrah Duncan , Afonso Jose , Bernard-Salas Jeronimo , Borys Colin , Clements David L. , Cormier Diane , Efstathiou Andreas , Gonzalez-Alfonso Eduardo , Lebouteiller Vianney , Spoon Henrik 
Published: November 2016

ABSTRACT
We present the Herschel SPIRE Fourier Transform Spectroscopy (FTS) atlas for a complete flux-limited sample of local ultraluminous infrared galaxies (ULIRGs) as part of the HERschel Ultra Luminous InfraRed Galaxy Survey (HERUS). The data reduction is described in detail and was optimized for faint FTS sources ,with particular care being taken for the subtraction of the background, which dominates the continuum shape of the spectra. To improve the final spectra, special treatment in the data reduction has been given to any observation suffering from artifacts in the data caused by anomalous instrumental effects. Complete spectra are shown covering 200–671 μm, with photometry in the SPIRE bands at 250, 350, and 500 μm. The spectra include near complete CO ladders for over half of our sample, as well as fine structure lines from [C i] 370 μm, [C i] 609 μm, and [N ii] 205 μm. We also detect H2O lines in several objects. We construct CO spectral line energy distributions (SLEDs) for the sample, and compare their slopes with the far-infrared (FIR) colors and luminosities. We show that the CO SLEDs of ULIRGs can be broadly grouped into three classes based on their excitation. We find that the mid-J (5 < J < 8) lines are better correlated with the total FIR luminosity, suggesting that the warm gas component is closely linked to recent star formation. The higher J transitions do not linearly correlate with the FIR luminosity, consistent with them originating in hotter, denser gas that is unconnected to the current star formation. We conclude that in most cases more than one temperature component is required to model the CO SLEDs.
THE TDE ASASSN-14li AND ITS HOST RESOLVED AT PARSEC SCALES WITH THE EVN
Authors: Romero-Cañizales Cristina , Prieto José L. , Chen Xian , Kochanek Christopher S. , Dong Subo , Holoien Thomas W.-S. , Stanek Krzysztof Z. , Liu Fukun 
Published: November 2016

ABSTRACT
We report European Very Long Baseline Interferometry Network (EVN) radio continuum observations of ASASSN-14li, one of the best studied tidal disruption events (TDEs) to date. At 1.7 GHz with ≃12 × 6 mas resolution, the emission is unresolved. At 5.0 GHz with ≃3 × 2 mas resolution, the radio emission shows an extended structure that can be modeled with two components: a core-like component and a fainter, possibly elongated source 4.3 mas (∼2 pc) away. Our observations are not conclusive as to the nature of the components, but three scenarios are discussed. One possibility is a core-jet/outflow morphology, thus making of ASASSN-14li the first TDE jet/outflow directly imaged. For this case, the projected separation between the two components can only be explained by superluminal motion, rather than the lower velocities inferred from low-resolution radio observations. However, typical fast moving jets have brightness temperatures ∼5 orders of magnitude higher than we find, thus making this scenario less likely. The second possibility is that we are imaging a non-relativistic jet from past AGN/TDE activity. In this case a past TDE is preferred given that the spatial extension and radio luminosity of the elongated component are consistent with the theoretical predictions for a TDE outflow. Alternatively, the two sources could indicate the presence of a binary black hole, which would then naturally explain the enhanced TDE rates of post-starburst galaxies. Future EVN observations will help us to distinguish between these scenarios.
STELLAR POPULATIONS ACROSS THE BLACK HOLE MASS–VELOCITY DISPERSION RELATION
Authors: Martín-Navarro Ignacio , Brodie Jean P. , van den Bosch Remco C. E. , Romanowsky Aaron J. , Forbes Duncan A. 
Published: November 2016

ABSTRACT
Coevolution between supermassive black holes (BH) and their host galaxies is universally adopted in models for galaxy formation. In the absence of feedback from active galactic nuclei (AGNs), simulated massive galaxies keep forming stars in the local universe. From an observational point of view, however, such coevolution remains unclear. We present a stellar population analysis of galaxies with direct BH mass measurements and the BH mass–σ relation as a working framework. We find that over-massive BH galaxies, i.e., galaxies lying above the best-fitting BH mass–σ line, tend to be older and more α-element-enhanced than under-massive BH galaxies. The scatter in the BH mass–σ–[α/Fe] plane is significantly lower than that in the standard BH mass–σ relation. We interpret this trend as an imprint of AGN feedback on the star formation histories of massive galaxies.
THE OVERLOOKED ROLE OF STELLAR VARIABILITY IN THE EXTENDED MAIN SEQUENCE OF LMC INTERMEDIATE-AGE CLUSTERS
Authors: Salinas R. , Pajkos M. A. , Strader J. , Vivas A. K. , Ramos R. Contreras 
Published: November 2016

ABSTRACT
Intermediate-age star clusters in the Large Magellanic Cloud show extended main sequence turnoffs (MSTOs) that are not consistent with a canonical single stellar population. These broad turnoffs have been interpreted as evidence for extended star formation and/or stellar rotation. Since most of these studies use single frames per filter to do the photometry, the presence of variable stars near the MSTO in these clusters has remained unnoticed and their impact has been totally ignored. We model the influence of Delta Scuti using synthetic CMDs, adding variable stars following different levels of incidence and amplitude distributions. We show that Delta Scuti observed at a single phase will produce a broadening of the MSTO without affecting other areas of a CMD such as the upper MS or the red clump; furthermore, the amount of spread introduced correlates with cluster age, as observed. This broadening is constrained to ages ∼1–3 Gyr when the MSTO area crosses the instability strip, which is also consistent with observations. Variable stars cannot explain bifurcarted MSTOs or the extended MSTOs seen in some young clusters, but they can make an important contribution to the extended MSTOs in intermediate-age clusters.
MOND PREDICTION FOR THE VELOCITY DISPERSION OF THE “FEEBLE GIANT” CRATER II
Authors: McGaugh Stacy S. 
Published: November 2016

ABSTRACT
Crater II is an unusual object among the dwarf satellite galaxies of the Local Group in that it has a very large size for its small luminosity. This provides a strong test of MOND, as Crater II should be in the deep MOND regime (g
in ≈ 34 km2 s−2 kpc−1 ≪ a
0 = 3700 km2 s−2 kpc−1). Despite its great distance (≈120 kpc) from the Milky Way, the external field of the host (g
ex ≈ 282 km2 s−2 kpc−1) comfortably exceeds the internal field. Consequently, Crater II should be subject to the external field effect, a feature unique to MOND. This leads to the prediction of a very low velocity dispersion:

.
Predictors of Visual Outcomes and Microbial Profile in Endophthalmitis
Authors: Sharma Yog Raj , Gaur Nripen , Chandra Parijat , Takkar Brijesh 
Published: November 2016

BACKGROUND AND OBJECTIVE:To evaluate predictors of visual outcomes and microbial profile in endophthalmitis.PATIENTS AND METHODS:This was a prospective, interventional case series at a tertiary eye care center. Of the 207 patients included, 83 had post-cataract surgery endophthalmitis (PCE), 84 had post-traumatic endophthalmitis (PTE), and 16 had endogenous endophthalmitis. Vitreous samples were evaluated for microbial profile, and all patients received similar empirical antibiotic therapy. Main outcome measures were good visual acuity, defined as better than 20/400, and microbial profile with drug resistance.RESULTS:Final visual acuity better than 20/400 was seen in 88% patients previously treated with intravitreal antibiotics (P< .001), 89% with presenting vision of less than 3.3 LogMAR units (P< .001), 61% without retinal detachment (RD) (P< .001), 58% without retained intraocular foreign body (RIOFB) (P= .007), 88% without extensive media haze (P= .007), 71% of culture-negative patients (P= .007), and 65% with gram-positive bacteria (P= .03). On multivariate analysis, presenting visual acuity of less than 3.3 LogMAR units was found to have the highest adjusted odds ratio, 26.28 (95% CI, 9.13–75.6), for better visual outcome. Culture positivity was nearly 37%. Gram-positive bacteria were the most common in both PCE (90%) and PTE (55%) groups, whereas hyphae form fungus was the most common organism grown in endogenous endophthalmitis (50%) (P< .001). In patients without extensive media haze, hyphae form fungus was the most common grown organism (42%) (P= .03). PTE was predominant (60%) in the patients with antibiotic resistance.CONCLUSIONS:Presenting visual acuity better than hand motions close to face is the single most common indicator of good visual prognoses. Fungal infections are associated with RD, RIOFB, trauma, and absence of extensive media haze. Microbial resistance may be an important concern in PTE patients.[Ophthalmic Surg Lasers Imaging Retina. 2016;47:991–998.]
Intraoperative OCT Imaging of the Argus II Retinal Prosthesis System
Authors: Rachitskaya Aleksandra V. , Yuan Alex , Marino Meghan J. , Reese Jamie , Ehlers Justis P. 
Published: November 2016

BACKGROUND AND OBJECTIVE:
Optimal placement of the Argus II Retinal Prosthesis System (Second Sight Medical Products, Sylmar, CA) is critical. Intraoperative optical coherence tomography (OCT) allows for intrasurgical visualization and confirmation of array placement. In this study, two different OCT systems were evaluated to assess the feasibility and utility of this technology during Argus II surgery.

PATIENTS AND METHODS:
Intraoperative OCT was performed on five patients undergoing Argus II implantation at Cole Eye Institute from June 2015 to July 2016. The EnVisu portable OCT (Bioptigen, Morrisville, NC) and microscope-integrated RESCAN 700 (Zeiss, Oberkochen, Germany) intraoperative OCT systems were utilized. The EnVisu was used in three patients and the RESCAN 700 in three of the five patients. Following array tacking, intraoperative OCT was performed over the entire array including the edges and tack.

RESULTS:
Intraoperative OCT allowed for visualization of the array/retina interface. Microscope integration of the OCT system facilitated ease of focusing, real-time feedback, surgeon-directed OCT scanning to the areas of interest, and enhanced image quality at points of interest.

CONCLUSIONS:
Intraoperative imaging of the Argus II electrode array is feasible and provides information about electrode array-retina interface and distance to help guide a surgeon. Microscope integration of OCT appears to provide an optimal and efficient approach to intraoperative OCT during Argus II array placement.

[
Ophthalmic Surg Lasers Imaging Retina
. 2016;47:999–1003.]
Enhanced Depth SD-OCT Images Reveal Characteristic Choroidal Changes in Patients With Vogt-Koyanagi-Harada Disease
Authors: Li Mei , Liu Qiuhui , Luo Yan , Li Yonghao , Lin Shaofen , Lian Ping , Yang Qiufen , Li Xiaofang , Liu Xialin , Sadda SriniVas , Lu Lin 
Published: November 2016

BACKGROUND AND OBJECTIVE:
To identify characteristic choroidal changes of patients with Vogt-Koyanagi-Harada (VKH) disease at different stages.

PATIENTS AND METHODS:
Fifty-four patients with VKH in the acute uveitic or convalescent stages, 24 patients with central serous chorioretinopathy (CSC), and 54 normal participants were enrolled in this prospective, observational study. Enhanced depth imaging spectral-domain optical coherence tomography scans were captured for all subjects to allow for comparison of choroidal morphological findings.

RESULTS:
Numerous round or oval hyperreflective profiles with hyporeflective cores, corresponding to choroidal vessels, were observed in the choroid of control participants and patients with CSC; whereas the numbers of these profiles were markedly decreased in the choroid of VKH patients in both the acute uveitic and convalescent stages.

CONCLUSION:
A reduction in vascular profiles in the choroid is observed in VKH and may aid in the differentiation with disorders such as CSC.

[
Ophthalmic Surg Lasers Imaging Retina
. 2016;47:1004–1012.]
Sociodemographic and clinical characteristics of a diabetic population at a tertiary care center in Assam, India
Authors: Borah Meghna , Goswami Rohini 
Published: November 2016

Abstract
Aims: To elucidate the sociodemographic and clinical characteristics of patients with type 2 diabetes mellitus (T2DM) attending a tertiary care hospital in Dibrugarh, Assam.
Subjects and Methods: A total of 132 T2DM patients (74 males and 48 females) were included in the study. Patients were evaluated with detailed history, meticulous examination, and laboratory investigations and given a detailed interview questionnaire to fill out.
Statistical Analysis Used: Graph Pad Prism, published by GraphPad Software, Inc., California.
Results: The highest prevalence was found in the age group 41–50 years (28%). A large number of the study population (35%) was sedentary. It was observed that the body mass index was over the normal range in 42% of the study subjects. Central obesity was observed in 76 patients (58%). Only 9% of the patients had managed to achieve good glycemic control (<6.5%). In our study, 39% of the patients were taking the prescribed medications irregularly. A significant proportion of the study subjects had associated comorbidities such as hypertension (50%), obesity (42%), and dyslipidemia (37%). Fasting blood glucose, postprandial blood glucose, and glycated hemoglobin levels were elevated in both males and females. The values were higher in males, but statistically, the difference was not significant.
Conclusions: The present study revealed that poor glycemic control, irregular medication intake, obesity, dyslipidemia, sedentary lifestyles, and hypertension were prevalent in T2DM patients. Hence, the overall risk profile in patients from Assam was very poor and needs improvement. These data can support health professionals' actions to effectively maintain and provide a more comprehensive approach to management of T2DM.
The ominous octet of “S” in noncommunicable disease
Authors: Sharma Ruchita , Kumar K. V. S. , Kalra Sanjay 
Published: November 2016

AbstractNoncommunicable diseases (NCDs) have surpassed the infectious disorders as the major causes of morbidity and mortality worldwide. This is the first decade in the existence of humanity, where the prevalence of obesity has surpassed that of the malnutrition. Although the NCD rates have increased in developed countries, the mortality rates have reduced due to the effective management and prevention strategies. Similar trends are not seen in developing countries where the NCD-related mortality is on the rise. The risk factors for NCD are commonly encountered and require a lot of personal involvement to curb the rise. In this review, we shall discuss the common risk factors leading to the NCD and also suggest certain remedial measures. We propose the ominous octet of “S,” a constellation of risk factors starting with the letter “S,” leading to the NCD.
Case Report of Ectopic Ovarian Pregnancy following Fresh Embryo Transfer
Authors: Samara Nivin , Bentov Yaakov 
Published: November 2016

Background Ovarian pregnancy is a rare and challenging clinical phenomenon. Recent studies have identified assisted reproductive treatments and infertility as risk factors. However, neither a definite mechanism nor clear risk factors were identified and therefore prevention strategies are yet unavailable. Clinical Case In this article, we present a case of ovarian pregnancy occurring following in vitro fertilization treatment and a fresh embryo transfer. The couple was diagnosed with unexplained infertility and no identifiable risk factors for extrauterine pregnancy. The diagnosis of ovarian pregnancy was made during explorative laparoscopy performed due to suspected extrauterine pregnancy. The patient had normal intra- and postoperative course. Conclusion Ovarian pregnancy is an infrequent and a challenging diagnosis. Yet, late diagnosis and lack of appropriate intervention may have long-term implications. Several mechanisms and risk factors are proposed, and their acknowledgment may improve early diagnosis and prevention of complications.
Stackings and the W-cycles Conjecture
Authors: Louder Larsen , Wilton Henry 
Published: November 2016

AbstractWe prove Wise’s W-cycles conjecture. Consider a compact graph Γ' immersing into another graph Γ. For any immersed cycle Λ: S1 ⟶ Γ, we consider the map Λ' from the circular components 𝕊 of the pullback to Γ'. Unless Λ' is reducible, the degree of the covering map 𝕊 ⟶ S1 is bounded above by minus the Euler characteristic of Γ'. As a corollary, any finitely generated subgroup of a one-relator group has a finitely generated Schur multiplier.
Nuij Type Pencils of Hyperbolic Polynomials
Authors: Kurdyka Krzysztof , Paunescu Laurentiu 
Published: November 2016

AbstractNuij’s theorem states that if a polynomial p ∈ ℝ[z] is hyperbolic (i.e., has only real roots), then p+sp'' is also hyperbolic for any s ∈ ℝ. We study other perturbations of hyperbolic polynomials of the form pa(z, s) := . We give a full characterization of those a = (a1 , . . . , ad ) ∈ ℝd for which pa(z, s) is a pencil of hyperbolic polynomials. We also give a full characterization of those a = (a1 , . . . , ad ) ∈ ℝd for which the associated families pa(z, s) admit universal determinantal representations. In fact, we show that all these sequences come fromspecial symmetric Toeplitz matrices.