J. A. Eisner et al. 2007 ApJ 657 347 doi:10.1086/510833
J. A. Eisner1,2, E. I. Chiang1,3, B. F. Lane4,5 and R. L. Akeson6
Show affiliationsWe use spectrally dispersed near-IR interferometry data to constrain the temperature profiles of sub-AU-sized regions of 11 Herbig Ae/Be sources. We find that a single-temperature ring does not reproduce the data well. Rather, models incorporating radial temperature gradients are preferred. These gradients may arise in a dusty disk, or may reflect separate gas and dust components with different temperatures and spatial distributions. Comparison of our models with broadband spectral energy distributions suggests the latter explanation. The data support the view that the near-IR emission of Herbig Ae/Be sources arises from hot circumstellar dust and gas in sub-AU-sized disk regions. Intriguingly, our derived temperature gradients appear systematically steeper for disks around higher mass stars. It is not clear, however, whether this reflects trends in relative dust/gas contributions or gradients within individual components.
circumstellar matter; stars: individual (AB Aur, AS 442, CQ Tau, MWC 120, MWC 480, MWC 758, MWC 1080, T Ori, V1295 Aql, V1685 Cyg, VV Ser); stars: pre-main sequence; techniques: high angular resolution; techniques: interferometric
Issue 1 (2007 March 1)
Received 2006 July 7, accepted for publication 2006 November 13
J. A. Eisner et al. 2007 ApJ 657 347
J. A. Eisner et al. 2005 ApJ 623 952
J. A. Eisner et al 2007 ApJ 654 L77
Stanimir A. Metchev et al. 2005 ApJ 622 451
J. A. Eisner et al. 2005 ApJ 635 396
J. A. Eisner et al. 2002 ApJ 569 334
J. A. Eisner et al. 2008 ApJ 683 304
A. Buscarino et al 2008 EPL 82 38002
J. A. Eisner et al. 2009 ApJ 692 309
J. A. Eisner and S. R. Kulkarni 2001 ApJ 550 871