Near-Infrared interferometry of η Carinae with high spatial and spectral resolution using the VLTI and the AMBER instrument
نویسندگان
چکیده
Send offprint requests to: G. Weigelt email: [email protected] ⋆ Based on observations made with ESO telescopes at Paranal Observatory under programme ID 074.A-9025(A).
منابع مشابه
Interferometric observations of η Carinae with VINCI / VLTI ( Research Note )
Context. The bright star η Carinae is the most massive and luminous star in our region of the Milky Way. Though it has been extensively studied using many different techniques, its physical nature and the mechanism that led to the creation of the Homunculus nebula are still debated. Aims. We aimed at resolving the central engine of the η Carinae complex in the near-infrared on angular scales of...
متن کاملExtragalactic Astronomy with the Vlti: a New Window on the Universe
Interferometry in the optical and near infrared has so far played a marginal role in Extragalactic Astronomy. Active Galactic Nuclei are the brightest and most compact extragalactic sources, nonetheless only a very limited number could be studied with speckle interferometry and none with long baseline interferometry. The VLTI will allow the study of moderately faint extragalactic objects with v...
متن کاملCalibration of MIDI , the Mid - infrared Interferometer for the VLTI
Calibration of MIDI, the Mid-infrared Interferometer for the VLTI MIDI is the MID-infrared Interferometric Instrument at the Very Large Telescope Interferometer (VLTI). It will perform long-baseline stellar interferometry in the N band (8. . . 13 μm). In the run-up of setting up MIDI, some preparatory tasks had to be solved concerning the calibration of the instrument in the laboratory. Being a...
متن کاملDirect measurement of the size and shape of the present - day stellar wind of η Carinae ?
We present new high angular resolution observations at near-IR wavelengths of the core of the Luminous Blue Variable η Carinae, using NAOS-CONICA at the VLT and VINCI at the VLT Interferometer (VLTI). The latter observations provide spatial information on a scale of 5 milli-arcsec or ∼11 AU at the distance of η Carinae. The present-day stellar wind of ηCarinae is resolved on a scale of several ...
متن کاملVLTI / AMBER and VLTI / MIDI spectro - interferometric observations of the B [ e ] supergiant CPD − 57 ◦ 2874 ⋆
We present the first high spatial and spectral observations of the circumstellar envelope (CSE) of a B[e] supergiant (CPD−57◦ 2874), performed with the Very Large Telescope Interferometer (VLTI). Spectra, visibilities, and closure phase, were obtained using the beam-combiner instruments AMBER (near-IR interferometry with three 8.3 m Unit Telescopes or UTs) and MIDI (mid-IR interferometry with t...
متن کامل