Blue straggler stars in old open clusters exhibit a Kraft break in rotation, with rapid rotators above the break and slow rotators below, indicating their envelopes behave like those of single stars.
ApJ669(2):1167–1189
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Blue straggler stars in old open clusters predominantly appear near the terminal-age main sequence because mass transfer from asymptotic giant branch donors enriches their cores with helium.
The first eclipsing CEMP candidate is identified in a 1.224-day binary, with 3.5% of dwarf carbon stars showing short-period variability consistent with tidally locked post-common envelope systems and supporting wind capture for carbon enhancement.
Collates archival stellar activity and rotation data for potential HWO targets, finding measurements for at least 70% of high-interest systems but activity cycles for fewer than 20%.
The authors present selection criteria and resulting sizes for PLATO's calibration input catalog (cPIC, 71,671 stars) and fine-guidance input catalog (fgPIC, 2,640 stars) to support commissioning and operations.
citing papers explorer
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Blue Straggler Stars in Old Open Clusters and the Kraft Break
Blue straggler stars in old open clusters exhibit a Kraft break in rotation, with rapid rotators above the break and slow rotators below, indicating their envelopes behave like those of single stars.
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The Distribution of Blue Straggler Stars in the Color-Magnitude Diagrams of Old Open Clusters
Blue straggler stars in old open clusters predominantly appear near the terminal-age main sequence because mass transfer from asymptotic giant branch donors enriches their cores with helium.
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An eclipsing CEMP candidate discovered in a search for dwarf carbon stars in post-common envelope binaries
The first eclipsing CEMP candidate is identified in a 1.224-day binary, with 3.5% of dwarf carbon stars showing short-period variability consistent with tidally locked post-common envelope systems and supporting wind capture for carbon enhancement.
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HWO Target Stars and Systems: Activity and Rotation Catalog (ARC) of Potential Target Stars for the Habitable Worlds Observatory
Collates archival stellar activity and rotation data for potential HWO targets, finding measurements for at least 70% of high-interest systems but activity cycles for fewer than 20%.
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PLATO input catalogs for technical calibration and fine guidance
The authors present selection criteria and resulting sizes for PLATO's calibration input catalog (cPIC, 71,671 stars) and fine-guidance input catalog (fgPIC, 2,640 stars) to support commissioning and operations.