Mid-Infrared Interferometric Observations of MWC349A

Details Mid-Infrared Interferometric Observations of MWC349A Mid-Infrared Interferometric Observations of MWC349A

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5710q&link_type=abstract

American Astronomical Society, AAS Meeting #211, #57.10; Bulletin of the American Astronomical Society, Vol. 39, p.831

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present observations of MWC\,349\,A with MIDI at the VLTI (the Mid-Infrared Interferometric Instrument at ESO's Very Large Telescope Interferometer), which are a prime example of the power of combined spatial and spectral resolution for addressing complex astrophysical phenomena.
Previous observations of the peculiar emission line star MWC\,349\,A suggest that it is a young massive star in the short-lived phase when the parental cloud has been completely dispersed, but the accretion disk has not yet been destroyed by ionization. The system is seen nearly edge-on; the unique hydrogen recombination line maser / laser activity of MWC\,349\,A from mm to infrared wavelengths is likely a consequence of this viewing geometry.
We have taken 13 measurements with MIDI at the VLTI (Very Large Telescope Interferometer) in the GRISM mode covering the N band (8 to 13 microns) at a spectral resolution R ≈ 230. The wavelength dependence of the continuum visibility agrees with model calculations for circumstellar dust disks. In addition, the signatures of at least a dozen emission lines have been identified in the interferometric data.
We present a first analysis of visibility amplitudes and differential phase data. In particular we show that a simple model can represent the SED and visibility amplitudes of the continuum flux. The visibilities for the hydrogen and forbidden lines are also discussed.

Affiliated with

Also associated with

No associations

Rating

Mid-Infrared Interferometric Observations of MWC349A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Mid-Infrared Interferometric Observations of MWC349A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mid-Infrared Interferometric Observations of MWC349A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1477923