Molecular hydrogen in the disk of the Herbig star HD 97048

Details Molecular hydrogen in the disk of the Herbig star HD 97048 Molecular hydrogen in the disk of the Herbig star HD 97048

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sf2a.conf..503m&link_type=abstract

"SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: C. Charbonnel, F. Combes

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present high-resolution spectroscopic mid-infrared observations of the circumstellar disk around the Herbig Ae star HD 97048 with the VLT Imager and Spectrometer for the mid-InfraRed (ǐsir). We detect the S(1) pure rotational line of molecular hydrogen (H_2) at 17.035 μm arising from the disk around the star. This detection reinforces the claim that HD 97048 is a young object surrounded by a flared disk at an early stage of evolution. The emitting warm gas is located within the inner 35 AU of the disk. This detection implies that particular physical conditions, such as a T_{gas} > T_{dust}, are present in the inner disk surface layer. We do not detect the S(2) and S(4) H_2 lines, but we derive upper limits on the integrated line fluxes which allow us to estimate an upper limit on the gas excitation temperature. This limit on the temperature sets new contraints on the mass of warm gas in the inner regions of the disk.

Affiliated with

Also associated with

No associations

Rating

Molecular hydrogen in the disk of the Herbig star HD 97048 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 Molecular hydrogen in the disk of the Herbig star HD 97048, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular hydrogen in the disk of the Herbig star HD 97048 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1287882