Bisectors of the HARPS cross-correlation function The dependence on stellar atmospheric parameters

Creative Commons License

BAŞTÜRK Ö., Dall T. H., Collet R., Lo Curto G., SELAM S. O.

ASTRONOMY & ASTROPHYSICS, vol.535, 2011 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 535
  • Publication Date: 2011
  • Doi Number: 10.1051/0004-6361/201117740
  • Journal Name: ASTRONOMY & ASTROPHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: instrumentation: spectrographs, techniques: radial velocities, line: profiles, stars: atmospheres, stars: activity, SPECTRAL-LINE BISECTORS, NEWTON-TELESCOPE LIBRARY, GIANT STARS, SPECTROSCOPIC SURVEY, EXTRASOLAR PLANETS, EMPIRICAL SPECTRA, MODEL ATMOSPHERES, EPSILON-ERIDANI, DATA-BASE, ABUNDANCES
  • Open Archive Collection: AVESIS Open Access Collection
  • Ankara University Affiliated: Yes

Abstract

Context. Bisectors of the HARPS cross-correlation function (CCF) can discern between planetary radial-velocity (RV) signals and spurious RV signals from stellar magnetic activity variations. However, little is known about the effects of the stellar atmosphere on CCF bisectors or how these effects vary with spectral type and luminosity class.