A Caltech Library Service

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

Isella, A. and Tatulli, E. and Natta, A. and Testi, L. (2008) Gas and dust in the inner disk of the Herbig Ae star MWC 758. Astronomy and Astrophysics, 483 (2). L13-L16. ISSN 0004-6361. doi:10.1051/0004-6361:200809641.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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 (R = 35) 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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Isella, A.0000-0001-8061-2207
Testi, L.0000-0003-1859-3070
Additional Information:© ESO 2008. Received 24 February 2008 / Accepted 25 March 2008. We thank Paola d’Alessio and James Muzerolle for providing as with the gas SED models shown in Fig. 3. This project was partially supported by the INAF 2005 grant “Interferometria infrarossa: ottimizzazione di osservazioni astrofisiche” and by the INAF 2006 grant “From Disks to Planetary Systems”. This work was performed in part under contract with the Jet Propulsion Laboratory (JPL) funded by NASA through the Michelson Fellowship Program. J.P.L. is managed for NASA by the California Institute of Technology.
Funding AgencyGrant Number
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Subject Keywords:accretion, accretion disks; techniques : interferometric; stars : planetary systems : protoplanetary disks
Issue or Number:2
Record Number:CaltechAUTHORS:ISEaanda08
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13833
Deposited By: Tony Diaz
Deposited On:03 Apr 2009 22:57
Last Modified:08 Nov 2021 22:40

Repository Staff Only: item control page