Cluster Difference Imaging Photometric Survey. II. TOI 837: A Young Validated Planet in IC 2602

“…We find that TOI 837 is a T = 9.9 mag G0/F9 dwarf in the southern open cluster IC 2602. The star and planet are therefore million years old. …”
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The K2 M67 study: Establishing the limits of stellar rotation period measurements in M67 with K2 campaign 5 data by Esselstein, R, Aigrain, S, Vanderburg, A, Smith, J, Meibom, S, Van Saders, J, Mathieu, R

“…The open cluster M67 offers a unique opportunity to measure rotation periods for solar-age stars across a range of masses, potentially filling a critical gap in the understanding of angular momentum loss in older main sequence stars. …”

Revisit of 77 Clusters Candidates with Multiple Main Sequences using Gaia DR3 by Jing Chen, Zhongmu Li, Su Zhang, Wenchang Zhao, You Wu

“…Gaia DR3 data provide the latest and full astrometric data for more than 1.5 billion sources, and these allow us to revisit the 77 special open cluster candidates collected from LISC star cluster catalog. …”
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The Empirical Limits of Gyrochronology by Luke G. Bouma, Elsa K. Palumbo, Lynne A. Hillenbrand

“…In this work, we present an interpolation-based gyrochronology framework that reproduces the time- and mass-dependent spin-down rates implied by the latest open cluster data, while also matching the rate at which the dispersion in initial stellar rotation periods decreases as stars age. …”
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The value of routine mid-trimester ultrasound in low-risk pregnancies at primary care level by B van Dyk, JA Motto, EJ Buchmann

“…This study investigated the effect of routine second-trimester ultrasound scanning on obstetric management and pregnancy outcomes. This was an open cluster, randomised, controlled trial. Clusters of women with low-risk pregnancies presenting in the second trimester were randomised to receive an ultrasound scan followed by usual antenatal care, or to an unscanned control group undergoing conventional antenatal care only. …”
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Cost-Effectiveness and Cost?Benefit Analyses of Providing Menstrual Cups and Sanitary Pads to Schoolgirls in Rural Kenya by Masih A. Babagoli, Anja Benshaul-Tolonen, Garazi Zulaika, Elizabeth Nyothach, Clifford Oduor, David Obor, Linda Mason, Emily Kerubo, Isaac Ngere, Kayla F. Laserson, Rhiannon Tudor Edwards, Penelope A. Phillips-Howard

“…benefit analyses of three-arm single-site open cluster randomized controlled pilot study providing menstrual cups or sanitary pads for 1 year. …”
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SPECTROSCOPIC INVESTIGATIONS OF GALACTIC CLUSTERS WITH ASSOCIATED CEPHEID VARIABLES. III. COLLINDER 394 AND BB SGR by I. A. Usenko, A. Yu. Kniazev, I. Yu. Katkov, V. V. Kovtyukh, T. V. Mishenina, A. S. Miroshnichenko, D. G. Turner

“…We present the results of a spectro- scopic and photometric investigation of 20 objects from the open cluster Collinder 394, which contains the Cepheid BB Sgr. …”
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Cluster Difference Imaging Photometric Survey. II. TOI 837: A Young Validated Planet in IC 2602 by Ricker, George R, Vanderspek, Roland K, Burke, Christopher J., Levine, Alan M, Seager, Sara

“…We find that TOI 837 is a T = 9.9 mag G0/F9 dwarf in the southern open cluster IC 2602. The star and planet are therefore million years old. …”
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Distance determination for RAVE stars using stellar models by Breddels, M, Smith, M, Helmi, A, Bienaymé, O, Binney, J, Bland-Hawthorn, J, Boeche, C, Burnett, B, Campbell, R, Freeman, K, Gibson, B, Gilmore, G, Grebel, E, Munari, U, Navarro, J, Parker, Q, Seabroke, G, Siebert, A, Siviero, A, Steinmetz, M, Watson, F, Williams, M, Wyse, R, Zwitter, T

“…This method is tested with artificial data, Hipparcos trigonometric parallaxes and observations of the open cluster M67. Results: When we applied our method to a set of 16 146 stars, we found that 25% (4037) of the stars have relative (statistical) distance errors of <35%, while 50% (8073) and 75% (12 110) have relative (statistical) errors smaller than 45% and 50%, respectively. …”

Understanding angular momentum evolution of solar-age stars with K2 data by Esselstein, R

“…Well-calibrated with open clusters up to the age of ~2.5 Gyr, predictions from gyrochronology are in conflict with asteroseismic observations of older stars, and the underlying physics are poorly understood. …”

The wide-field, multiplexed, spectroscopic facility WEAVE: survey design, overview, and simulated implementation by Jin, S, Trager, S, Dalton, GB, Aguerri, JAL, Drew, J, Falcón-Barroso, J, Gänsicke, B, Hill, V, Iovino, A, Pieri, M, Poggianti, B, Smith, D, Vallenari, A, Abrams, DC, Aguado, D, Ascasibar, Y, Belokurov, V, Laigle, C, Molaeinezhad, A, Terrett, D, Gilbert, J, Hughes, S, Jarvis, M, Lewis, I, Peirani, S, Schallig, E, Stott, J

“…After summarising the design and implementation of WEAVE and its data systems, we present the organisation, science drivers and design of a five- to seven-year programme of eight individual surveys to: (i) study our Galaxy’s origins by completing Gaia’s phase-space information, providing metallicities to its limiting magnitude for ∼3 million stars and detailed abundances for ∼1.5 million brighter field and open-cluster stars; (ii) survey ∼0.4 million Galactic-plane OBA stars, young stellar objects and nearby gas to understand the evolution of young stars and their environments; (iii) perform an extensive spectral survey of white dwarfs; (iv) survey ∼400 neutral-hydrogen-selected galaxies with the IFUs; (v) study properties and kinematics of stellar populations and ionised gas in z < 0.5 cluster galaxies; (vi) survey stellar populations and kinematics in ∼25 000 field galaxies at 0.3 ≲ z ≲ 0.7; (vii) study the cosmic evolution of accretion and star formation using >1 million spectra of LOFAR-selected radio sources; (viii) trace structures using intergalactic/circumgalactic gas at z > 2. …”

Distance determination for RAVE stars using stellar models by Breddels, M, Smith, M, Helmi, A, Bienayme, O, Binney, J, Bland-Hawthorn, J, Boeche, C, Burnett, B, Campbell, R, Freeman, K, Gibson, B, Gilmore, G, Grebel, E, Munari, U, Navarro, J, Parker, Q, Seabroke, G, Siebert, A, Siviero, A, Steinmetz, M, Watson, F, Williams, M, Wyse, R, Zwitter, T

“…This method is tested with artificial data, Hipparcos trigonometric parallaxes and observations of the open cluster M67. Results: When we applied our method to a set of 16 146 stars, we found that 25% (4 037) of the stars have relative (statistical) distance errors of &lt; 35%, while 50% (8 073) and 75% (12 110) have relative (statistical) errors smaller than 45% and 50%, respectively. …”

Internal Calibration of LAMOST and Gaia DR3 GSP-Spec Stellar Abundances by Zexi Niu, Haibo Yuan, Jifeng Liu

“…The chemical homogeneity of the open cluster M 44 is also improved by a factor of two. …”
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Transitory Tidal Heating and Its Impact on Cluster Isochrones by S. Jane Arthur, Gloria Koenigsberger, Kristin Brady, Diana Estrella-Trujillo, Catherine Pilachowski

“…In this paper we explore the impact of injecting heat into stars with masses near the main-sequence turnoff mass (1.26 M _⊙ ) of the open cluster M67. The heating rate is obtained from the tidal shear energy dissipation rate, which is calculated from first principles by simultaneously solving the equations that describe orbital motion and the response of a star’s layers to the gravitational, Coriolis, centrifugal, gas pressure, and viscous forces. …”
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M67 Blue Stragglers with High-resolution Infrared Spectroscopy by K. E. Brady, C. Sneden, C. A. Pilachowski, Melike Afşar, G. N. Mace, D. T. Jaffe, N. M. Gosnell, R. Seifert

“…We report on the first detailed infrared chemical analysis of five binary members (S277, S997, S975, S1031, and S1195) in the open cluster M67 (NGC 2682). These stars are located outside (bluer and/or brighter than) the main-sequence turnoff region in M67. …”
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SPYGLASS. V. Spatially and Temporally Structured Star-forming Environments in the Cepheus-Hercules Complex by Ronan Kerr, Adam L. Kraus, Daniel Krolikowski, Luke G. Bouma, Juan P. Farias

“…Dynamical simulations indicate that, while some embedded open clusters and central components of these associations are converging, they likely lack the mass necessary to capture one another and undergo hierarchical cluster assembly. …”
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Tracing the Origins of Mass Segregation in M35: Evidence for Primordially Segregated Binaries by Erin Motherway, Aaron M. Geller, Anna C. Childs, Claire Zwicker, Ted von Hippel

“…M35 is a young open cluster and home to an extensive binary population. …”
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Dedicated mobile application for drug adverse reaction reporting by patients with relapsing remitting multiple sclerosis (Vigip-SEP study): study protocol for a randomized controll... by Gilles Defer, Florian Le Caignec, Sophie Fedrizzi, François Montastruc, Damien Chevanne, Jean-Jacques Parienti, Laure Peyro-Saint-Paul

“…Methods/design We designed a multi-centric, open cluster-randomized controlled trial, called the Vigip-SEP study (NCT03029897), using the App My eReport France® to report ADR to the appropriate authorities in E2B language, in accordance with European regulations. …”
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Introducing quality clusters in general practice – a qualitative study of the experiences of cluster coordinators by Marius Brostrøm Kousgaard, Thorbjørn Hougaard Mikkelsen, Maria Bundgaard, Marie Henriette Madsen, Morten Bonde Klausen, Mads Toft Kristensen, Pia Kürstein Kjellberg, Jens Søndergaard

“…Challenges initially included setting up the clusters administratively and translating the open cluster concept into a local, workable model; and later obtaining relevant data for the cluster meetings and facilitating peer discussions about the data. …”
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Rotational Velocities and Radii Estimates of Low-mass Pre-main-sequence Stars in NGC 2264 by Laurin M. Gray, Katherine L. Rhode, Catrina M. Hamilton-Drager, Tiffany Picard, Luisa M. Rebull

“…We present projected rotational velocities ( v sin i values) of 254 T Tauri stars (TTSs) in the ∼3 Myr old open cluster NGC 2264, measured using high-dispersion spectra from the WIYN 3.5 m telescope’s Hydra instrument. …”
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