Elemental abundance analyses with Coude Echelle spectrograms from the TUBITAK National Observatory of Turkey: I. The HgMn stars 11 Per, HR 2801, and nu Cnc

Adelman S. J., YÜCE K.

ASTRONOMISCHE NACHRICHTEN, cilt.331, sa.8, ss.785-793, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 331 Sayı: 8
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1002/asna.201011411
  • Dergi Adı: ASTRONOMISCHE NACHRICHTEN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.785-793
  • Anahtar Kelimeler: stars: abundances, stars: individual (11 Per, HR 2801, nu Cnc), MERCURY-MANGANESE STARS, ATOMIC TRANSITION-PROBABILITIES, B-TYPE STARS, A-TYPE STARS, EXPERIMENTAL OSCILLATOR-STRENGTHS, ADDED IUE SPECTRA, ROTATIONAL VELOCITIES, DAO SPECTROGRAMS, CRITICAL COMPILATION, MAIN-SEQUENCE
  • Ankara Üniversitesi Adresli: Evet

Özet

Using coadded spectrograms taken with the Coude Echelle Spectrograph (CES) of the 1.50-m Russian-Turkish Telescope of the TUBITAK National Observatory (TUG) near Antalya in Turkey, elemental abundance analyses of three HgMn stars 11 Per, HR 2801, and nu Cnc were performed. Comparisons are made with spectra obtained with the long camera of the Dominion Astrophysical Observatory (DAO) coude spectrograph and its SITe4 CCD. The CES equivalent widths are about 12% larger than that for the DAO long camera. Our first results from TUG data/spectra show that all three stars exhibit the Hg II lambda 3984 line and somewhat diverse abundance patterns. 11 Per tends to have underabundant light elements with underabundant and overabundant Fe-peak elements. HR 2801 has mostly underabundant elements, with a few elements having solar abundances while N and Mn are overabundant. The coolest star. Cnc has light elements having mostly solar abundances, overabundant iron group abundances, and very overabundant SrYZr and Ba. Comparisons with the abundance patterns of other HgMn stars show that they have a wide diversity of abundance patterns. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim