bluuebunny/crossref_metadata_2025_split huggingface dataset:
New Rotation Period Measurements for M Dwarfs in the Southern Hemisphere: An Abundance of Slowly Rotating, Fully Convective Stars
Authors: Newton Elisabeth R. , Mondrik Nicholas , Irwin Jonathan , Winters Jennifer G. , Charbonneau David 
Published: October 2018

Abstract
Stellar rotation periods are valuable both for constraining models of angular momentum loss and for understanding how magnetic features impact inferences of exoplanet parameters. Building on our previous work in the northern hemisphere, we have used long-term, ground-based photometric monitoring from the MEarth Observatory to measure 234 rotation periods for nearby, southern hemisphere M dwarfs. Notable examples include the exoplanet hosts GJ 1132, LHS 1140, and Proxima Centauri. We find excellent agreement between our data and K2 photometry for the overlapping subset. Among the sample of stars with the highest quality data sets, we recover periods in 66%; as the length of the data set increases, our recovery rate approaches 100%. The longest rotation periods we detect are around 140 days, which we suggest represent the periods that are reached when M dwarfs are as old as the local thick disk (about 9 Gyr).
HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet around a Sun-like Star*
Authors: Sarkis P. , Henning Th. , Hartman J. D. , Bakos G. Á. , Brahm R. , Jordán A. , Bayliss D. , Mancini L. , Espinoza N. , Rabus M. , Csubry Z. , Bhatti W. , Penev K. , Zhou G. , Bento J. , Tan T. G. , Arriagada P. , Butler R. P. , Crane J. D. , Shectman S. , Tinney C. G. , Wright D. J. , Addison B. , Durkan S. , Suc V. , Buchhave L. A. , Val-Borro M. de , Lázár J. , Papp I. , Sári P. 
Published: October 2018

Abstract
We report the first discovery of a multi-planetary system by the HATSouth network, HATS-59b,c, a planetary system with an inner transiting hot Jupiter and an outer cold massive giant planet, which was detected via radial velocity. The inner transiting planet, HATS-59b, is on an eccentric orbit with

, orbiting a

mag solar-like star (

=

and

) with a period of

days. The outer companion, HATS-59c is on a circular orbit with

and a period of 1422 ± 14 days. The inner planet has a mass of

and a radius of

, yielding a density of

. Unlike most planetary systems that include only a single hot Jupiter, HATS-59b,c includes, in addition to the transiting hot Jupiter, a massive outer companion. The architecture of this system is valuable for understanding planet migration.
Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810
Authors: Ment Kristo , Fischer Debra A. , Bakos Gaspar , Howard Andrew W. , Isaacson Howard 
Published: October 2018

Abstract
The N2K planet search program was designed to exploit the planet-metallicity correlation by searching for gas giant planets orbiting metal-rich stars. Here, we present the radial velocity measurements for 378 N2K target stars that were observed with the HIRES spectrograph at Keck Observatory between 2004 and 2017. With this data set, we announce the discovery of six new gas giant exoplanets: a double-planet system orbiting HD 148164 (

of 1.23 and 5.16 M
JUP) and single planet detections around HD 55696 (

= 3.87 M
JUP), HD 98736 (

=2.33 M
JUP), HD 203473 (

= 7.8 M
JUP), and HD 211810 (

= 0.67 M
JUP). These gas giant companions have orbital semimajor axes between 1.0 and 6.2 au and eccentricities ranging from 0.13 to 0.71. We also report evidence for three gravitationally bound companions with

between 20 and 30 M
JUP, placing them in the mass range of brown dwarfs, around HD 148284, HD 214823, and HD 217850, and four low-mass stellar companions orbiting HD 3404, HD 24505, HD 98630, and HD 103459. In addition, we present updated orbital parameters for 42 previously announced planets. We also report a nondetection of the putative companion HD 73256 b. Finally, we highlight the most promising candidates for direct imaging and astrometric detection, and we find that many hot Jupiters from our sample could be detectable by state-of-the-art telescopes such as Gaia.
KMT-2016-BLG-1820 and KMT-2016-BLG-2142: Two Microlensing Binaries Composed of Planetary-mass Companions and Very-low-mass Primaries
Authors: Jung Youn Kil , Hwang Kyu-Ha , Ryu Yoon-Hyun , Gould Andrew , Han Cheongho , Yee Jennifer C. , Albrow Michael D. , Chung Sun-Ju , Shin In-Gu , Shvartzvald Yossi , Zang Weicheng , Cha Sang-Mok , Kim Dong-Jin , Kim Hyoun-Woo , Kim Seung-Lee , Lee Chung-Uk , Lee Dong-Joo , Lee Yongseok , Park Byeong-Gon , Pogge Richard W. 
Published: October 2018

Abstract
We present the analyses of two short-timescale

microlensing events, KMT-2016-BLG-1820 and KMT-2016-BLG-2142. In both light curves, the brief anomalies were clearly captured and densely covered by the Korea Microlensing Telescope Network survey. From these analyses, we find that both events have small Einstein radii of

, suggesting that the binary-lens systems are composed of very-low-mass components and/or are located much closer to the lensed stars than to Earth. From Bayesian analyses, we find that these binaries have total system masses of

and

, implying that they are well within the very-low-mass regime. The estimated lens-component masses indicate that the binary lenses consist of a giant-planet/brown-dwarf pair (KMT-2016-BLG-1820) and a dark/faint object pair (KMT-2016-BLG-2140) that are located near the deuterium-burning and hydrogen-burning mass limits, respectively. Both lens systems are likely to be in the Galactic disk with estimated distances of about 6 and 7 kpc. The projected lens-components separations are 1.1 and 0.8 au, and the mass ratios are 0.11 and 0.20. These prove that the microlensing method is effective to identify these closely separated very-low-mass binaries having low mass-ratios.
Plausible Home Stars of the Interstellar Object ‘Oumuamua Found in Gaia DR2
Authors: Bailer-Jones Coryn A. L. , Farnocchia Davide , Meech Karen J. , Brasser Ramon , Micheli Marco , Chakrabarti Sukanya , Buie Marc W. , Hainaut Olivier R. 
Published: October 2018

Abstract
The first detected interstellar object, ‘Oumuamua, which passed within 0.25 au of the Sun on 2017 September 9, was presumably ejected from a stellar system. We use its newly determined non-Keplerian trajectory together with the reconstructed Galactic orbits of 7 million stars from Gaia DR2 to identify past close encounters. Such an “encounter” could reveal the home system from which ‘Oumuamua was ejected. The closest encounter, at 0.60 pc (0.53–0.67 pc, 90% confidence interval), was with the M2.5 dwarf HIP 3757 at a relative velocity of 24.7

, 1 Myr ago. A more distant encounter (1.6 pc) but with a lower encounter (ejection) velocity of 10.7

was with the G5 dwarf HD 292249, 3.8 Myr ago. Two more stars have encounter distances and velocities intermediate to these. The encounter parameters are similar across six different non-gravitational trajectories for ‘Oumuamua. The ejection of ‘Oumuamua by scattering from a giant planet in one of the systems is plausible, but requires a rather unlikely configuration to achieve the high velocities found. A binary star system is more likely to produce the observed velocities. None of the four home candidates have published exoplanets or are known to be binaries. Given that the 7 million stars in Gaia DR2 with 6D phase space information is just a small fraction of all stars for which we can eventually reconstruct orbits, it is a priori unlikely that our current search would find ‘Oumuamua’s home star system. As ‘Oumuamua is expected to pass within 1 pc of about 20 stars and brown dwarfs every Myr, the plausibility of a home system also depends on an appropriate (low) encounter velocity.
INSIGHT-HXMT Observations of the New Black Hole Candidate MAXI J1535−571: Timing Analysis
Authors: Huang Y. , Qu J. L. , Zhang S. N. , Bu Q. C. , Chen Y. P. , Tao L. , Zhang S. , Lu F. J. , Li T. P. , Song L. M. , Xu Y. P. , Cao X. L. , Chen Y. , Liu C. Z. , Chang H.-K. , Yu W. F. , Weng S. S. , Hou X. , Kong A. K. H. , Xie F. G. , Zhang G. B. , ZHOU J. F. , Chang Z. , Chen G. , Chen L. , Chen T. X. , Chen Y. B. , Cui W. , Cui W. W. , Deng J. K. , Dong Y. W. , Du Y. Y. , Fu M. X. , Gao G. H. , Gao H. , Gao M. , Ge M. Y. , Gu Y. D. , Guan J. , Gungor C. , Guo C. C. , Han D. W. , Hu W. , Huo J. , Ji J. F. , Jia S. M. , Jiang L. H. , Jiang W. C. , Jin J. , Jin Y. J. , Li B. , Li C. K. , Li G. , Li M. S. , Li W. , Li X. , Li X. B. , Li X. F. , Li Y. G. , Li Z. J. , Li Z. W. , Liang X. H. , Liao J. Y. , Liu G. Q. , Liu H. W. , Liu S. Z. , Liu X. J. , Liu Y. , Liu Y. N. , Lu B. , Lu X. F. , Luo T. , Ma X. , Meng B. , Nang Y. , Nie J. Y. , Ou G. , Sai N. , Shang R. C. , Sun L. , Tan Y. , Tao W. , Tuo Y. L. , Wang G. F. , Wang H. Y. , Wang J. , Wang W. S. , Wang Y. S. , Wen X. Y. , Wu B. B. , Wu M. , Xiao G. C. , Xiong S. L. , Xu H. , Yan L. L. , Yang J. W. , Yang S. , Yang Y. J. , Zhang A. M. , Zhang C. L. , Zhang C. M. , Zhang F. , Zhang H. M. , Zhang J. , Zhang Q. , Zhang T. , Zhang W. , Zhang W. C. , Zhang W. Z. , Zhang Y. , Zhang Y. , Zhang Y. F. , Zhang Y. J. , Zhang Z. , Zhang Z. , Zhang Z. L. , Zhao H. S. , Zhao J. L. , Zhao X. F. , Zheng S. J. , Zhu Y. , Zhu Y. X. , Zou C. L. ,   The Insight-HXMT Collaboration
Published: October 2018

Abstract
We present X-ray timing results of the new black hole candidate MAXI J1535−571 during its 2017 outburst from Hard X-ray Modulation Telescope (Insight-HXMT) observations taken from 2017 September 6 to 23. Following the definitions given by Belloni, we find that the source exhibits transitions from the low/hard state to the hard intermediate state, and eventually to the soft intermediate state. Quasi-periodic oscillations (QPOs) are found in the intermediate states, which suggest different types of QPOs. With the large effective area of Insight-HXMT at high energies, we are able to present the energy dependence of the QPO amplitude and centroid frequency up to 100 keV, which has rarely been explored by previous satellites. We also find that the phase lag at the type-C QPOs centroid frequency is negative (soft lag) and strongly correlated with the centroid frequency. Assuming a geometrical origin of type-C QPOs, the source is consistent with being a high-inclination system.
Old, Metal-poor Extreme Velocity Stars in the Solar Neighborhood*
Authors: Hattori Kohei , Valluri Monica , Bell Eric F. , Roederer Ian U. 
Published: October 2018

Abstract
We report the discovery of 30 stars with extreme space velocities (≳480

) in the Gaia-DR2 archive. These stars are a subset of 1743 stars with high-precision parallax, large tangential velocity (v
tan > 300

), and measured line-of-sight velocity in DR2. By tracing the orbits of the stars back in time, we find at least one of them is consistent with having been ejected by the supermassive black hole at the Galactic Center. Another star has an orbit that passed near the Large Magellanic Cloud about 200 Myr ago. Unlike previously discovered blue hypervelocity stars, our sample is metal-poor (−1.5 < [Fe/H] < −1.0) and quite old (>1

). We discuss possible mechanisms for accelerating old stars to such extreme velocities. The high observed space density of this population, relative to potential acceleration mechanisms, implies that these stars are probably bound to the Milky Way (MW). If they are bound, the discovery of this population would require a local escape speed of around ∼600

and consequently imply a virial mass of M
200 ∼ 1.4 × 1012
M
⊙ for the MW.
Imaging Spectroscopy of Ionized Gaseous Nebulae around Optically Faint AGNs at Redshift z ∼ 2
Authors: Law David R. , Steidel Charles C. , Chen Yuguang , Strom Allison L. , Rudie Gwen C. , Trainor Ryan F. 
Published: October 2018

Abstract
We present Keck/OSIRIS laser guide-star assisted adaptive optics (LGSAO) integral-field spectroscopy of [O iii] λ5007 nebular emission from 12 galaxies hosting optically faint (

= 20–25;

erg s−1) active galactic nuclei (AGNs) at redshift z ∼ 2–3. In combination with deep Hubble Space Telescope Wide Field Camera 3 (HST/WFC3) rest-frame optical imaging, Keck/MOSFIRE rest-optical spectroscopy, and Keck/KCWI rest-UV integral-field spectroscopy, we demonstrate that both the continuum and emission-line structures of these sources exhibit a wide range of morphologies, from compact, isolated point sources to double-AGN merging systems with extensive ∼50 kpc tidal tails. One of the 12 galaxies previously known to exhibit a proximate damped Lyα system coincident in redshift with the galaxy shows evidence for both an extended [O iii] narrow-line emission region and spatially offset Lyα emission (with morphologically distinct blueshifted and redshifted components) indicative of large-scale gas flows photoionized by the central AGN. We do not find widespread evidence of star formation in the host galaxies surrounding these AGNs; the [O iii] velocity dispersions tend to be high (σ = 100–500

), the continuum morphologies are much more compact than a mass-matched star-forming comparison sample, and the diagnostic nebular emission-line ratios are dominated by an AGN-like ionizing spectrum. The sample is most consistent with a population of AGNs that radiate at approximately their Eddington limit and photoionize extended [O iii] nebulae whose characteristic sizes scale approximately as the square root of the AGN luminosity.
Bayesian Inference of the Rates of Surface Reactions in Icy Mantles
Authors: Holdship J. , Jeffrey N. , Makrymallis A. , Viti S. , Yates J. 
Published: October 2018

Abstract
Grain surface chemistry and its treatment in gas-grain chemical models is an area of large uncertainty. While laboratory experiments are making progress, there is still much that is unknown about grain surface chemistry. Further, the results and parameters produced by experiments are often not easily translated to the rate equation approach most commonly used in astrochemical modeling. It is possible that statistical methods can reduce the uncertainty in grain surface chemical networks. In this work, a simple model of grain surface chemistry in a molecular cloud is developed and a Bayesian inference of the reactions rates is performed through Markov Chain Monte Carlo sampling. Using observational data of the solid state abundances of major chemical species in molecular clouds, the posterior distributions for the rates of seven reactions producing CO, CO2, CH3OH, and H2O are calculated in a form that is suitable for rate equation models. This represents a vital first step in the development of a method to infer reaction rates from observations of chemical abundances in astrophysical environments.
Une communication peu visible : l’Agence fédérale belge pour l’accueil des demandeurs d’asile, les centres ouverts et le retour volontaire
Authors: Van Neste-Gottignies Amandine , Mistiaen Valériane 
Published: October 2018

Cet article propose d’étudier la relation de communication qui se construit entre l’Agence fédérale belge pour l’accueil des demandeurs d’asile et le demandeur d’asile durant la phase d’accueil. L’analyse rend compte de la complexité d’une communication qui s’établit à différents niveaux et dans des formes variées. Elle s’inscrit dans une approche multi-sites couplant différentes techniques d’enquête : des entretiens avec les acteurs de notre étude, l’entretien biographique avec des demandeurs d’asile et l’observation directe dans un centre d’accueil. Les données sont tirées d’un travail de terrain mené entre 2014 et 2017. Face au constat de l’absence quasi totale de supports de communication médiatisée destinés aux demandeurs d’asile, nous interrogeons les modalités de la communication entre institution d’accueil et demandeur d’asile. S’agit-il d’une communication sans trace ? Existe-t-il une volonté de ne pas communiquer ? Si l’invisibilité semble dominer le discours sur l’accueil, une exception se profile : la communication sur les programmes de retour volontaire.
Qu’est-ce qu’être francisé ? L’expérience d’immigrants dits allophones dans un bastion traditionnel du Québec
Authors: Roussel Anne Sophie 
Published: October 2018

Cet article explore à travers le Québec ce que représente l’interpellation à apprendre la langue nationale pour appartenir à la société civile. La francisation des immigrants y est articulée en termes de contrat moral, de catégories linguistiques et de division de l’espace national. Les immigrants dits allophones – ceux n’ayant aucune des langues officielles canadiennes comme première langue – se doivent de devenir des locuteurs du français au risque d’être jugés comme faisant preuve de déficience linguistique ou comme étant susceptibles d’adopter des pratiques linguistiques illégitimes. Les régions, bastions traditionnels de la nation québécoise, sont imaginées comme un site parfait pour les franciser. Me basant sur un terrain ethnographique, je suggère que les immigrants allophones en région s’investissent dans leur francisation, mais qu’ils doivent interpréter cette interpellation qui mythifie et mystifie ce qu’est être un locuteur de français. Cette indétermination permet conjointement à la population locale de retravailler continuellement les frontières de l’appartenance légitime.
Les appellations des identités de genre non traditionnelles. Une approche lexicologique
Authors: Elchacar Mireille , Luna Salita Ada 
Published: October 2018

Les appellations des identités de genre non traditionnelles se sont multipliées ces dernières années. L’anglicisme queer se retrouve en français, mais est concurrencé par des formes comme LGBT , allosexuel , altersexuel, trans ou bispirituel . Les groupes concernés tentent d’acquérir du capital symbolique en proposant des appellations englobant davantage d’identités de genre et d’orientations sexuelles. La présente étude est une analyse lexicologique de ces néologismes et des facteurs qui peuvent favoriser ou au contraire freiner leur circulation dans la presse générale au Québec. Les groupes qu’on dénomme par ces appellations ont-ils fait part de préférences ou de commentaires à leur sujet ? Est-ce qu’on sent une préoccupation normative pour certaines appellations, comme l’anglicisme queer ? L’intégration au système lexical du français est-elle une condition nécessaire à la circulation des termes ? L’article tente de dégager lequel de ces facteurs pèse plus que les autres.
Comment un client est-il qualifié de « déviant » par un employé au contact ? L’apport de la théorie de l’étiquetage
Authors: Reniou Fanny , Rouquet Aurélien , Subramanian Dilip 
Published: October 2018

En s’appuyant sur la théorie de l’étiquetage de Becker, cette recherche a pour objectif de comprendre la manière dont un employé au contact étiquette un client « déviant », dans le cadre des réclamations. Basé sur 52 entretiens d’employés de cinq entreprises de secteurs différents, l’article introduit un modèle conceptuel intégrateur qui montre qu’un employé au contact étiquette un client « déviant » lorsque celui-ci adopte (1) des comportements qui transgressent certaines normes ; en tenant compte (2) de la gravité du comportement du client ; et (3) des caractéristiques de la relation client. Au final, la recherche propose des recommandations aux entreprises afin de faire face aux comportements déviants.
Des intervenants sociaux en milieu rural au cœur des espaces de vie et au contact de leurs habitants
Authors: Dubéchot Patrick 
Published: October 2018

« Existe-t-il des spécificités de l’intervention sociale en milieu rural ? » Pour tenter de répondre à cette question, une démarche empirique a été choisie : des entretiens ont été réalisés avec des professionnels de l’intervention sociale en milieu rural. Quelques données de cadrage dégagent le profil de la population rurale du Loir-et-Cher : faible niveau de formation de la population rurale, absence d’emploi, mobilité restreinte, voire volonté de rester dans son environnement immédiat, précarité et pauvreté. À travers la parole et l’expérience des enquêtés, ce qui semble spécifique dans leur approche concerne à la fois une conception du métier, une posture professionnelle, une proximité physique dans l’accompagnement des personnes. Ce sont des professionnels du « front office » c’est-à-dire en contact direct avec les personnes et la population.
Teaching and Measuring Critical Thinking
Authors: Staib Sharon 
Published: October 2018

ABSTRACT
Nurse educators are under pressure to show critical thinking as a program outcome. Many different strategies have been suggested for developing critical thinking among nursing students. It is easy to believe these strategies increase critical thinking, but not all have actually been measured for reliability or validity. Based on an exhaustive literature search, the author attempted to identify teaching strategies that are being used to increase critical thinking and how effective those strategies have been.
Critique du transnationalisme
Authors: Potot Swanie 
Published: October 2018

<p class="resume">La sociologie des migrations est aujourd’hui à un carrefour : après avoir été dominée par la perspective de l’intégration et fait la part belle à l’étude des relations interethniques puis, au cours des vingt dernières années, au paradigme transnational, elle semble aujourd’hui prendre une nouvelle inflexion se concentrant sur le retour des frontières et de l’analyse des politiques migratoires.</p>
Use of butorphanol and diprenorphine to counter respiratory impairment in the immobilised white rhinoceros (Ceratotherium simum)
Authors: Meyer Leith C.R. , Fuller Andrea , Hofmeyr Markus , Buss Peter , Miller Michele , Haw Anna 
Published: October 2018

Opioid-induced immobilisation results in severe respiratory impairment in the white rhinoceros. It has therefore been attempted in the field to reverse this impairment with the use of opioid agonist-antagonists, such as nalorphine, nalbuphine, butorphanol and diprenorphine; however, the efficacy of some of these treatments has yet to be determined. The efficacy of butorphanol, either alone or in combination with diprenorphine both with and without oxygen insufflation, in alleviating opioid-induced respiratory impairment was evaluated. The study was performed in two parts: a boma trial and a field trial. Rhinoceroses were immobilised specifically for the study, according to a strict protocol to minimise confounding variables. A two-way analysis of variance was used to compare the physiological responses of the rhinoceroses to the different treatments and their effects over time. The intravenous administration of butorphanol (at 3.3 mg per mg etorphine) plus diprenorphine (at 0.4 mg per mg etorphine) did not offer any advantage over butorphanol (at 15 mg per mg etorphine) alone with regard to improving PaO2, PaCO2 and respiratory rates in etorphine-immobilised white rhinoceroses. Both butorphanol + diprenorphine + oxygen and butorphanol + oxygen, at the doses used, significantly improved the etorphine-induced hypoxaemia in both boma- and field-immobilised white rhinoceroses. Clinically acceptable oxygenation in field-immobilised white rhinoceroses can be achieved by using either treatment regimen, provided that it is combined with oxygen insufflation.