IAU

The A-Star Puzzle

IAU Symposium No. 224

Dedicated to
Vera L. Khokhlova (*1927 — †2003)
and
Horace W. Babcock (*1912 — †2003)
July 8-13, 2004, Poprad, Slovakia

Astronomical Institute

Proceedings
Basic Info	Programme	List of Participants	Poster	List of Contributions
Presentations
Symposium Photos
Dedications VERA LVOVNA KHOKHLOVA (by N. Polosukhina, T. Ryabchikova, A. Krivosheina) HORACE WELCOME BABCOCK (by G. W. Preston) The presentations and original posters as delivered during the Symposium are included below A: Normal stars; theory of atmospheres; observations AOR1: ADELMAN: The physical properties of normal A stars AT1: KRTICKA, KUBAT: NLTE wind models of A supergiants AP1: BISCHOF: A platform independent, paralel version of ATLAS12 AP4: ADELMAN et al.: Elemental abundance studies using the EBASIM spectrograph of the 2.1 m CASLEO Observatory. I. The normal stars 5 Aqr and 30 Peg AP5: KORCAKOVA et al.: Synthetic spectra of A supergiants B: Stellar evolution and rotation; binarity BKNS: NOELS. MONTALBAN, MACERONI: Stellar evolution BIL2: MARCONI, PALLA: Pre-Main Sequence A-type stars BIL3: YILDIZ: Binarity as a tool for determining the physical properties and evolutionary aspects of A-type stars BT1: YILDIZ: Effective mass: A new concept in stellar astrophysics based on the internal rotation, and its place in the A- and B-star puzzle BT2:REINERS, ROYER: First signatures of strong differential rotation in A-type stars BT4: ROYER, ZOREC, GOMEZ: Rotational velocity distribution of A-type stars C: Convection in stars CKNS: KUPKA: Convection in stars CIL1: SMALLEY: Observations of convection in A-type stars CIL2: FREYTAG: Numerical simulations of convection in A-stars CT2: BOWNING, BROWN, TOOMRE: Simulation of core convection and resulting dynamo action in rotating A-type stars CP1: STUETZ, KUPKA: Stellar model atmospheres with emphasis on velocity dynamics CP2: KUPKA et al.: Observational signatures of atmospheric velocity fields in Main Sequence stars D: Diffusion as the mechanism for element segregation DIL1: ALECIAN: Diffusion in magnetic fields DT1: KRTICKA, KUBAT: Multicomponent stellar winds and chemical peculiarity in A stars DT3: RICHARD, TALON, MICHAUD: Surface abundances of Am stars as a constraint on rotational mixing DP2: ALECIAN, LeBLANC: Fast and easy computation of radiative acceleration in stellar interiors E: Magnetic fields EP4: ROMANYUK, KUDRYAVTSEV: Vertical structure of magnetic field in the CP star apha2 CVn EP5: SEMENKO: Measuring magnetic field in CP stars using multiline approach EP6: GERTH, GLAGOLEVSKIJ: The deforming effect of stellar magnetic fields on spectral line profiles EP8: GLAGOLEVSKIJ, GERTH: Modelling of several long-periodic magnetic CP-stars: HD 2453, HD 12288, HD200311 EP10: KUDRYAVTSEV, ROMANYUK, ELKIN: Search for new magnetic stars in stellar group and open clusters EP11: GERTH, GLAGOLEVSKIJ: The decentered dipole - a challenge for modelling F: Chemically peculiar stars FIL2: WAHLGREN: Observations of non-magnetic CP stars: Crossing boundaries FT1: ILIEV et al.: A search for SB2 systems among selected Am binaries FT3: MASHONKINA, RYABCHIKOVA, RYABTSEV: NLTE ionization equilibrium of ND II and Nd III in cool A and Ap stars FP1: ILIEV et al.: Diagnostics of lambda Bootis stars using Na-D, H-alpha and Paschen lines FP2: MIKULASEK et al.: Analysis of light curves of magnetic CP stars by advanced PCA methods FP4: FRAGA et al.: Looking for a definitive answer for age dependency in Ap stars FP6: WADE, BAGNULO: A Peculiar Newsletter: The official circular of the IAU Working Group on Ap and Related Stars FP7: POLOSUKHINA et al.: The enigma of lithium in roAp stars FP11: DRAKE et al.: Spotted Li abundance on the surface of the CP star HD 3980 FP12: FREMAT, LAMPENS, HENSBERGE: Chemical analysis of a triple system of A-type stars FP13: KRTICKA et al.: The dependence of the energy distribution on the abundances of A-star atmosphere models FP17: DWORETSKY: The helium abundances in HgMn and normal stars FP19: MAITZEN et al.: The 'Delta a' reserach group FP21: NESVACIL, HUBRIG, MATHYS: Testing the presence of lithium on the surface of cool Ap starss FP23: POLOSUKHINA et al.: New Observations of the CP stars in the spectral regions of Li I 6708 A and 6104 A lines with the 6 meter BTA telescope G: Pulsating variables (delta Scuti-; gamma Doradus-; roAp-stars), theory and observations GIL2: KURTZ et. al: Some recent discoveries in roAp stars GT1: ZWINTZ, MARCONI, WEISS: Pulsating pre-Main Sequence stars in young clusters GP2: SACHKOV et al.: Radial velocity pulsations in the atmosphere of the roAp star HD 24712 GP3: SAIO: The effect of the magnetic field on the radiative excitation and damping of high order p-modes GP5: ZIMA et al.: Limits for the application of spectroscopic mode ID methods GP6: LENZ, BREGER: Period04: A software package to extract multiple frequencies from real data GP9: RIPEPI et al.: Multisite observations of the pre-Main Sequence delta Scuti-type star IP Per GP12 ANTOCI, BREGER: The delta Scuti star 44 Tau: Observations and analysis GP17: SHIBAHASHI et al.: How to interpret LPW in roAp stars GP18: LAMPENS et al.: Pulsation of the delta Scuti multiple system DG Leo GP20: KOCHUKHOV: Indirect imaging of stellar nonradial pulsations GP21: KALLINGER et al.: The puzzling Maia candidate star aplha Draconis GP22: DASZYNSKA-DASZKIEWICZ et al.: Various applications of multicolour photometry and radial velocity data for multimode delta Scuti stars H: Evolved A-type stars HIL1: MOEHLER: Horizontal branch A- and B-type stars in globular clusters HIL2: PRESTON, SNEDEN: The remarkable chemical compositions of blue metal-poor stars HP2: TANRIVERDI, ADELMAN, ALBAYRAK: The supergiant eta Leo (A0 Ib) HP3: YUCE: Abundances in 4 Lacertae and nu Cephei I: The A-star laboratory IKNS: LANDSTREET: A-type stars as physics laboratories IIL2: PAUNZEN: The lambda Bootis stars IP1: CORBALLY, GRAY: Characteristics of our neighboring A-stars J: Observational challenges of A-type stars JIL2: PADOVANI: A-stars and the Virtual Observatory JP4: BUDOVICOVA et al.: Orbital solutions for the A-type binaries alpha Dra and Mizar A using spectrum disentangling Last update: February 28, 2005

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