Accretion and Activity in Herbig Ae Stars: FUV Excess Light and Other Accretion Signatures

Details Accretion and Activity in Herbig Ae Stars: FUV Excess Light and Other Accretion Signatures Accretion and Activity in Herbig Ae Stars: FUV Excess Light and Other Accretion Signatures

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.8712g&link_type=abstract

American Astronomical Society Meeting 210, #87.12; Bulletin of the American Astronomical Society, Vol. 39, p.199

Astronomy and Astrophysics

Astronomy

Scientific paper

FUV and UV excess continuum light is commonly observed in accreting T Tauri stars, and has previously been reported for the Herbig Ae star HD 104237. For T Tauri stars, the excess light is interpreted as the luminosity of the accretion shock. We test the hypothesis that the FUV continuum of nearby, lightly reddened Herbig Ae stars also is dominated by the accretion luminosity and find a general trend of higher FUV excess light in systems with larger accretion rates. The jet detections for Herbig Ae stars are also preferentially associated with the higher accretion-rate systems, with the jet non-detections in HST imagery associated with stars with accretion rates <10-8 solar masses per year. The jet-driving systems also exhibit FUV Fe II emission arising in the inner disk: the non-detection of this emission for the Herbig Ae stars with both low accretion rates and no jet activity suggests that the jet launch region for Herbig Ae stars in general, and not just HD 104237, extends over the inner 1-2 AU of the disk.

Affiliated with

Also associated with

No associations

Rating

Accretion and Activity in Herbig Ae Stars: FUV Excess Light and Other Accretion Signatures 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 Accretion and Activity in Herbig Ae Stars: FUV Excess Light and Other Accretion Signatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accretion and Activity in Herbig Ae Stars: FUV Excess Light and Other Accretion Signatures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1032663