Gas and dust in the inner disk of the Herbig Ae star MWC 758

2008/03/25 by A. Isella, E. Tatulli, A. Natta +1 · 46 citations
Physics and Astronomy · #Accretion (finance) #Accretion disc #Astro and Planetary Science #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Be star #Circumstellar dust #Emission spectrum #Herbig Ae/Be star #Interferometry #K band #Star (game theory) #astro-ph

paper · pdf · doi:10.1051/0004-6361:200809641

published in Astronomy and Astrophysics 483(2), L13-L16 (EDP Sciences) · Accepted for publication in A&A

arxiv created 2008/03/25 · openalex publication_date 2008/04/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We investigate the origin of the near-infrared emission of the Herbig Ae star MWC 758 on sub-astronomical unit (AU) scales using spectrally dispersed low resolution () AMBER/VLTI interferometric observations in the H (1.7 μm) and K (2.2 μm) bands. We find that the K band visibilities and closure phases are consistent with the presence of a dusty disk inner rim located at the dust evaporation distance (0.4 AU) while the bulk of the H band emission arises within 0.1 AU from the central star. Comparing the observational results with theoretical model predictions, we suggest that the H band emission is dominated by an hot gaseous accretion disk.

Citations

• Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) -Third edition -Comments and statistics
• Few Skewed Disks Found in First Closure‐Phase Survey of Herbig Ae/Be Stars
• Passive Irradiated Circumstellar Disks with an Inner Hole
• Spectrally DispersedK‐Band Interferometric Observations of Herbig Ae/Be Sources: Inner Disk Temperature Profiles
• Accretion rates in Herbig Ae stars

Cited by

• Revealing the sub-AU asymmetries of the inner dust rim in the disk around the Herbig Ae star R Coronae Austrinae