과제정보
This study used the SIMBAD database, operated at CDS, Strasbourg, France. SA is thankful to the administration of ESO for financial support during his stay in Garching within a program of Ukrainian astronomers at risk and to Dr. F. Primas and N. Silva for excellent organization of their short-term visits. VK is grateful to the Vector-Stiftung at Stuttgart, Germany, for support within the program "2022 - Immediate help for Ukrainian refugee scientists" under grant P2022-0064. AD was funded by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (grant No. AP14972694).
참고문헌
- Adibekyan VZ, Sousa SG, Santos NC, Delgado Mena E, Gonzalez Hernandez JI, et al., Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program, Astron. Astrophys. 545, A32 (2012). https://doi.org/10.1051/0004-6361/201219401
- Andrievsky S, On the possible origin of λ Boo stars, Astron. Astrophys. 321, 838-840 (1997).
- Andrievsky S, The sodium abundance in λ Bootis stars, Astron. Astrophys. 449, 345-347 (2006). https://doi.org/10.1051/0004-6361:20053723
- Andrievsky S, Paunzen E, Towards the solution of the λ Bootis problem, Mon. Not. R. Astron. Soc. 313, 547-552 (2000). https://doi.org/10.1046/j.1365-8711.2000.03241.x
- Ardeberg A, Virdefors B, Solar line blocking for lambda lambda 4006-6860, Astron. Astrophys. Suppl. Ser. 36, 317-321 (1979).
- Beirao P, Santos NC, Israelian G, Mayor M, Abundances of Na, Mg and Al in stars with giant planets, Astron. Astrophys. 438, 251-256 (2005). https://doi.org/10.1051/0004-6361:20052750
- Bohm-Vitense E, The puzzle of the metallic line stars, Publ. Astron. Soc. Pac. 118, 419-435 (2006). https://doi.org/10.1086/499385
- Borra EF, Landstreet JD, The magnetic fields of the AP stars, Astrophys. J. Suppl. Ser. 42, 421-445 (1980). https://doi.org/10.1086/190656
- Caffau E, Bonifacio P, Faraggiana R, Francois P, Gratton RG, et al., Sulphur abundance in Galactic stars, Astron. Astrophys. 441, 533-548 (2005). https://doi.org/10.1051/0004-6361:20052905
- Charbonneau P, A simple accretion/diffusion model for lambda Bootis stars, Astrophys. J. Lett. 372, L33 (1991). https://doi.org/10.1086/186017
- Charbonneau P, Particle transport and the lambda Bootis phenomenon. I. The diffusion/mass-loss model revisited, Astrophys. J. 405, 720 (1993). https://doi.org/10.1086/172399
- da Silva L, Girardi L, Pasquini L, Setiawan J, von der Luhe O, et al., Basic physical parameters of a selected sample of evolved stars, Astron. Astrophys. 458, 609-623 (2006). https://doi.org/10.1051/0004-6361:20065105
- Delbouille L, Rolland G, Neven L, Atlas Photometrique du Spectre Solaire de λ 3000 a λ 10000 (Universite de Liege, Institut d'Astrophysique, Liege, 1973).
- Ecuvillon A, Israelian G, Santos NC, Shchukina NG, Mayor M, et al., Oxygen abundances in planet-harbouring stars: comparison of different abundance indicators, Astron. Astrophys. 445, 633-645 (2006). https://doi.org/10.1051/0004-6361:20053469
- Fuhr JR, Wiese WL, A critical compilation of atomic transition probabilities for neutral and singly ionized iron, J. Phys. Chem. Ref. Data 35, 1669-1809 (2006). https://doi.org/10.1063/1.2218876
- Galvez-Ortiz MC, Delgado-Mena E, Gonzalez Hernandez JI, Israelian G, Santos NC, et al., Beryllium abundances in stars with planets:extending the sample, Astron. Astrophys. 530, A66 (2011). https://doi.org/10.1051/0004-6361/200913827
- Gilli G, Israelian G, Ecuvillon A, Santos NC, Mayor M, Abundances of refractory elements in the atmospheres of stars with extrasolar planets, Astron. Astrophys. 449, 723-736 (2006). https://doi.org/10.1051/0004-6361:20053850
- Greenstein JL, Analysis of the metallic-line stars. II. Astrophys. J. 109, 121 (1949). https://doi.org/10.1086/145112
- Grevesse N, Sauval AJ, The solar abundance of iron and the photospheric model, Astron. Astrophys. 347, 348-354 (1999).
- Havnes O, Magnetic stars as generators of cosmic rays, Astron. Astrophys. 13, 52-57 (1971).
- Havnes O, Conti PS, Magnetic accretion processes in peculiar A stars, Astron. Astrophys. 14, 1-11 (1971).
- Jeong Y, Yushchenko AV, Doikov DN, The interaction between accretion from the interstellar medium and accretion from the evolved binary component in barium stars, J. Astron. Space Sci. 35, 75-82 (2018). https://doi.org/10.5140/JASS.2017.35.1.1
- Jeong Y, Yushchenko AV, Doikov DN, Gopka VF, Yushchenko VO, Chemical composition of RR Lyn - an eclipsing binary system with Am and λ Boo type components, J. Astron. Space Sci. 34, 75-82 (2017). https://doi.org/10.5140/JASS.2017.34.2.75
- Jofre E, Petrucci R, Saffe C, Saker L, Artur de la Villarmois E, et al., Stellar parameters and chemical abundances of 223 evolved stars with and without planet, Astron. Astrophys. 574, A50 (2015). https://doi.org/10.1051/0004-6361/201424474
- Kurucz RL, SYNTHE Spectrum Synthesis Programs and Line Data (Smithsonian Astrophysical Observatory, Cambridge, 1993).
- Lodders K, Solar system abundances and condensation temperatures of the elements, Astrophys. J. 591, 1220-1247 (2003). https://doi.org/10.1086/375492
- Luck RE, Abundances in the local region. I. G and K giants, Astron. J. 150, 88 (2015). https://doi.org/10.1088/0004-6256/150/3/88
- Melendez J, Asplund M, Gustafsson B, Yong D, The peculiar solar composition and its possible relation to planet formation, Astrophys. J. 704, L66-L70 (2009). https://doi.org/10.1088/0004-637X/704/1/L66
- North P, The rotation of AP stars, Astron. Astrophys. 141, 328-340 (1984).
- Perottoni HD, Amarante JAS, Limberg G, Rocha-Pinto HJ, Rossi S, et al., Searching for extragalactic exoplanetary systems: the curious case of BD+20 2457, Astrophys. J. 913, L3 (2021). https://doi.org/10.3847/2041-8213/abfb06
- Ramirez I, Melendez J, Asplund M, Accurate abundance patterns of solar twins and analogs: does the anomalous solar chemical composition come from planet formation?, Astron. Astrophys. 508, L17-L20 (2009). https://doi.org/10.1051/0004-6361/200913038
- Rutten RJ, van der Zalm EBJ, Revision of solar equivalent widths, Fe I oscillator strengths and the solar iron abundance, Astron. Astrophys. Suppl. Ser. 55, 143-161 (1984).
- Sadakane K, Ohnishi T, Ohkubo M, Takeda Y, Metallicities in four planet-harbouring K-type giants: HD 47536, HD 59686, HD 137759, and HD 219449, Publ. Astron. Soc. Jpn. 57, 127-133 (2005). https://doi.org/10.1093/pasj/57.1.127
- Setiawan J, Hatzes AP, von der Luhe O, Pasquini L, Naef D, et al., Evidence of a sub-stellar companion around HD 47536, Astron. Astrophys. 398, L19-L23 (2003). https://doi.org/10.1051/0004-6361:20021846
- Simmerer J, Sneden C, Cowan JJ, Collier J, Woolf VM, et al., The rise of the s-process in the galaxy, Astrophys. J. 617, 1091-1114 (2004). https://doi.org/10.1086/424504
- Soto MG, Jenkins JS, Jones MI, RAFT - I. Discovery of new planetary candidates and updated orbits from archival FEROS spectra, Mon. Not. R. Astron. Soc. 451, 3131-3144 (2015). https://doi.org/10.1093/mnras/stv1144
- Stuerenburg S, Abundance analysis of lambda Bootis stars, Astron. Astrophys. 277, 139-154 (1993).
- van Belle GT, von Braun K, Directly determined linear radii and effective temperatures of exoplanet host stars, Astrophys. J. 694, 1085-1098 (2009). https://doi.org/10.1088/0004-637X/694/2/1085
- Venn KA, Lambert DL, The chemical composition of three λ Bootis stars, Astrophys. J. 363, 234 (1990). https://doi.org/10.1086/169334
- Venn KA, Lambert DL, Could the ultra-metal-poor stars be chemically peculiar and not related to the first stars?, Astrophys. J. 677, 572-580 (2008). https://doi.org/10.1086/529069
- Wood BJ, Smithe DJ, Harrison T, The condensation temperatures of the elements: a reappraisal, Am. Mineral. 104, 844-856 (2019). https://doi.org/10.2138/am-2019-6852CCBY
- Yushchenko AV, URAN: a software system for the analysis of stellar spectra, Proceedings of the 20th Stellar Conference of the Czech and Slovak Astronomical Institutes, Brno, Czech Republic, 5-7 Nov 1997.
- Yushchenko AV, Gopka VF, Kang YW, Kim C, Lee BC, et al., The chemical composition of ρ puppis and the signs of accretion in the atmospheres of B-F type stars, Astron. J. 149, 59 (2015). https://doi.org/10.1088/0004-6256/149/2/59
- Yushchenko AV, Kim S, Jeong Y, Demessinova A, Yushchenko V, et al., The possible signs of hydrogen and helium accretion from interstellar medium on the atmospheres of F-K giants in the local region of the galaxy, J. Astron. Space Sci. 38, 175-183 (2021). https://doi.org/10.5140/JASS.2021.38.3.175
- Yushchenko AV, Rittipruk P, Yushchenko VA, Kang YW, The planetary host red giant HD47536 - chemical composition and signs of accretion, Odessa Astron. Publ. 26, 131-136 (2013).