RESULTS OF PROCESSING OF CCD OBSERVATIONS OF SELECTED OPEN CLUSTERS ON MAIDANAK by Yu. I. Protsyuk, Sh. Sh. Shukhratov, O. M. Kovalchuk, M. M. Muminov, Q. H. Yuldoshev, R. R. Abdurakhimov, V. M. Andruk

“…Observations of 20 open clusters at the Maidanak Observatory were performed using the Zeiss-1000 telescope in the winter of 2018. …”
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Investigating Stellar Variability in the Open Cluster Region NGC 381 by Jayanand Maurya, Y. C. Joshi, A. Panchal, A. S. Gour

“…We study variable stars in the field of the open cluster NGC 381 using photometric data observed over 27 nights and identify a total of 57 variable stars, six of which are member stars. …”
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THREE CEPHEIDS IN GALACTIC OPEN CLUSTERS: CHEMICAL COMPOSITION AND EVOLUTION by I. A. Usenko, V. V. Kovtyukh

“…Three classical Cepheids in galactic open clusters (CF Cas, DL Cas and WZ Sgr) were investigated, using high-resolution CCD spectra. …”
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The Effect of Age on the Grouping of Open Clusters: The Primordial Group Hypothesis by Juan Casado

Subjects: “…open cluster pairs…”
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Evolved Eclipsing Binaries and the Age of the Open Cluster NGC 752 by Eric L. Sandquist, Andrew J. Buckner, Matthew D. Shetrone, Samuel C. Barden, Catherine A. Pilachowski, Constantine P. Deliyannis, Dianne Harmer, Robert Mathieu, Søren Meibom, Søren Frandsen, Jerome A. Orosz

“…We present analyses of improved photometric and spectroscopic observations for two detached eclipsing binaries at the turnoff of the open cluster NGC 752: the 1.01 days binary DS And and the 15.53 days BD +37 410. …”
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OPEN CLUSTERS AND FIELD CEPHEIDS IN THE GALACTIC DISK – CONTRADICTIONS IN PROPERTIES by V. A. Marsakov, B. B. Koval', M. I. Gozha, V. V. Kovtyukh, T. V. Mishenina

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The Monitor project: the search for transits in the open cluster NGC 2362 by Miller, A, Irwin, J, Aigrain, S, Hodgkin, S, Hebb, L

“…We present the results of a systematic search for transiting planets in a ∼5 Myr open cluster, NGC 2362. We observed ∼1200 candidate cluster members, of which ∼475 are believed to be genuine cluster members, for a total of ∼100 h. …”

The Effect of Age on the Grouping of Open Clusters: II—Are There Old Binary Clusters? by Juan Casado

Subjects: “…open clusters and associations: general…”
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The Initial-Final Mass Relation from Carbon Stars in Open Clusters by Carlos Abia, Inma Domínguez, Paola Marigo, Sergio Cristallo, Oscar Straniero

“…We have conducted a chemical analysis of several carbon stars belonging to open clusters within the above cluster ages. Our chemical analysis reveals that the carbon stars found within the kink exhibit C/O ratios only slightly above the unity and the typical chemical composition expected for carbon stars of near solar metallicity, partially validating the above theoretical predictions. …”
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Calibrating the Color–Magnitude Relation of M Giants by Using Open Clusters by X. Y. Tang, C. J. Hao, J. Li, Z. Z. Yan, Y. Xu, J. Zhong, Z. H. Lin, Y. J. Li, D. J. Liu, L. F. Ding, X. F. Long

“…In this work, we aimed to achieve more accurate distance determination for M giants by focusing on open clusters (OCs) with a large number of member stars and thus improve the CMR. …”
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Investigating Mass Segregation of the Binary Stars in the Open Cluster NGC 6819 by Claire Zwicker, Aaron M. Geller, Anna C. Childs, Erin Motherway, Ted von Hippel

“…We search for mass segregation in the intermediate-aged open cluster NGC 6819 within a carefully identified sample of probable cluster members. …”
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A study on the metallicity gradients in the galactic disk using open clusters by Yogesh Chandra Joshi, Deepak, Sagar Malhotra

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New Method to Detect and Characterize Active Be Star Candidates in Open Clusters by Anahí Granada, Maziar R. Ghoreyshi, Carol E. Jones, Tõnis Eenmäe

“…With the aim of better understanding the physical conditions under which Be stars form and evolve, it is imperative to further investigate whether poorly studied young open clusters host Be stars. In this work, we explain how data from Gaia DR2 and DR3 can be combined to recover and characterize active Be stars in open clusters. …”
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The Stellar Content of the Young Open Cluster Berkeley 50 (IC 1310) by Meghan Speckert, Philip Massey, Brian A. Skiff

“…We observed the Galactic open cluster Berkeley 50 in order to determine its stellar content, distance, and age. …”
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Monitoring young associations and open clusters with Kepler in two-wheel mode by Aigrain, S, Alencar, S, Angus, R, Bouvier, J, Flaccomio, E, Gillen, E, Guzik, J, Hebb, L, Hodgkin, S, McQuillan, A, Micela, G, Moraux, E, Parviainen, H, Randich, S, Reece, S, Roberts, S, Zwintz, K

“…We outline a proposal to use the Kepler spacecraft in two-wheel mode to monitor a handful of young associations and open clusters, for a few weeks each. Judging from the experience of similar projects using ground-based telescopes and the CoRoT spacecraft, this program would transform our understanding of early stellar evolution through the study of pulsations, rotation, activity, the detection and characterisation of eclipsing binaries, and the possible detection of transiting exoplanets. …”

WIYN Open Cluster Study 89. M48 (NGC 2548) 2: Lithium Abundances in the 420 Myr Open Cluster M48 from Giants through K Dwarfs by Qinghui Sun, Constantine P. Deliyannis, Aaron Steinhauer, Barbara J. Anthony-Twarog, Bruce A. Twarog

“…We consider WIYN/Hydra spectra of 329 photometric candidate members of the 420 Myr old open cluster M48 and report lithium detections or upper limits for 234 members and likely members. …”
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Velocity Dispersion of the Open Cluster NGC 2571 by Radial Velocities and Proper Motions by Maxim V. Kulesh, Aleksandra E. Samirkhanova, Giovanni Carraro, Joao V. Sales-Silva, Roberto Capuzzo Dolcetta, Anton F. Seleznev

“…We use a kernel density estimator method to evaluate the stellar velocity dispersion in the open cluster NGC 2571. We derive the 3D velocity dispersion using both proper motions as extracted from Gaia Data Release 3 and single-epoch radial velocities as obtained with the instrument FLAMES at ESO's Very Large Telescope. …”
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Astrophysical Properties of 600 Bona Fide Single Stars in the Hyades Open Cluster by Wolfgang Brandner, Per Calissendorff, Taisiya Kopytova

“…Stellar sequences in nearby open clusters provide some of the best means to test and calibrate stellar evolutionary models and isochrones and to use these models to assign astrophysical properties consistently to a large sample of stars. …”
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Boron Abundances in Early B Dwarfs of the Galactic Open Cluster NGC 3293 by Charles R. Proffitt, Harim Jin, Simone Daflon, Daniel J. Lennon, Norbert Langer, Katia Cunha, Talawanda Monroe

“…New boron abundances or upper limits have been determined for eight early B stars in the young Galactic open cluster NGC 3293, using UV spectra obtained by the Hubble Space Telescope Cosmic Origins Spectrograph. …”
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The Abundance of S-Process Elements: Temporal and Spatial Trends from Open Cluster Observations by Laura Magrini, Carlos Viscasillas Vázquez, Giada Casali, Martina Baratella, Valentina D’Orazi, Lorenzo Spina, Sofia Randich, Sergio Cristallo, Diego Vescovi

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