000006656 001__ 6656
000006656 005__ 20240125122522.0
000006656 0247_ $$2DOI$$a10.3847/1538-3881/acdb50
000006656 037__ $$aSCART-2024-0036
000006656 100__ $$aMonier, Richard
000006656 245__ $$aThe Surface Composition of Six Newly Discovered Chemically Peculiar Stars. Comparison to the HgMn Stars mu Lep and beta Scl and the Superficially Normal B Star nu Cap
000006656 260__ $$c2023
000006656 520__ $$aWe report on a detailed abundance study of six bright, mostly southern, slowly rotating late B-stars: HD 1279 (B8III), HD 99803 (B9V), HD 123445 (B9V), HD 147550 (B9V), HD 171961 (B8III), and HD 202671 (B5II/III), hitherto reported as normal stars. We compare them to the two classical HgMn stars μ Lep and β Scl, and to the superficially normal star ν Cap. In the spectra of the six stars, the Hg II line at 3984 Å line is clearly seen and numerous lines of P, Ti, Mn, Fe, Ga, Sr, Y, and Zr appear to be strong absorbers. A comparison of newly acquired and archival spectra of these objects with a grid of synthetic spectra for selected unblended lines reveals large overabundances of P, Ti, Cr, Mn, Sr, Y, Zr, Ba, Pt, and Hg, and underabundances of He, Mg, Sc, and Ni. The effective temperatures, surface gravities, low projected rotational velocities, and the peculiar abundance patterns of the six investigated stars show that they are new chemically peculiar stars, mostly new HgMn stars, and are reclassified as such. The evolutionary status of these stars has been inferred, and their ages and masses estimated. The two most massive objects, HD 1279 and HD 202671, might have evolved away from the main sequence recently, the other stars are main-sequence objects. HD 99803A is a sharp lined HgMn star with grazing eclipses. From TESS and MASCARA photometry, we determine an orbital period of P orb = 26.12022 ± 0.00004 day. 
000006656 594__ $$aNO
000006656 6531_ $$aEclipsing binary stars
000006656 6531_ $$aChemically peculiar stars
000006656 6531_ $$aAstrophysics
000006656 6531_ $$aSolar and Stellar Astrophysics
000006656 6531_ $$aAstrophysics of Galaxies 
000006656 700__ $$aNiemczura, E.
000006656 700__ $$aKurtz, D. W. 
000006656 700__ $$aRappaport, S.
000006656 700__ $$aBowman, D. M.
000006656 700__ $$aMurphy, Simon J.
000006656 700__ $$aLebreton, Yveline
000006656 700__ $$aStuik, Remko
000006656 700__ $$aDeal, Morgan
000006656 700__ $$aMerle, Thibault
000006656 700__ $$aKılıçoğlu, T.
000006656 700__ $$aGebran, M.
000006656 700__ $$aLe Ster, Ewen
000006656 773__ $$c54-73$$n2$$pThe Astronomical Journal$$v166$$y2023
000006656 8560_ $$fthibault.merle@ksb-orb.be
000006656 85642 $$ahttps://ui.adsabs.harvard.edu/abs/2023AJ....166...54M/abstract
000006656 905__ $$apublished in
000006656 980__ $$aREFERD