The 2008-2009 outburst of the young binary system Z CMa unraveled by interferometry with high spectral resolution

Details The 2008-2009 outburst of the young binary system Z CMa unraveled by interferometry with high spectral resolution The 2008-2009 outburst of the young binary system Z CMa unraveled by interferometry with high spectral resolution

2010-07-30

arxiv.org/abs/1007.5382v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

To be published in the proceedings of the SPIE'2010 conference on "Optical and Infrared Interferometry II"

Scientific paper

Z CMa is a young binary system consisting of an Herbig primary and a FU Ori companion. Both components seem to be surrounded by active accretion disks and a jet was associated to the Herbig B0. In Nov. 2008, K. Grankin discovered that Z CMa was exhibiting an outburst with an amplitude larger than any photometric variations recorded in the last 25 years. To study the innermost regions in which the outburst occurs and understand its origin, we have observed both binary components with AMBER/VLTI across the Br{\gamma} emission line in Dec. 2009 in medium and high spectral resolution modes. Our observations show that the Herbig Be, responsible for the increase of luminosity, also produces a strong Br{\gamma} emission, and they allow us to disentangle from various origins by locating the emission at each velocities through the line. Considering a model of a Keplerian disk alone fails at reproducing the asymmetric spectro-astrometric measurements, suggesting a major contribution from an outflow.

Affiliated with

Also associated with

No associations

Rating

The 2008-2009 outburst of the young binary system Z CMa unraveled by interferometry with high spectral resolution 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 The 2008-2009 outburst of the young binary system Z CMa unraveled by interferometry with high spectral resolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 2008-2009 outburst of the young binary system Z CMa unraveled by interferometry with high spectral resolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-700092