Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:astro-ph/0611447)
· References in the article
· Citations to the Article (11) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (12)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Spectrally Dispersed K-Band Interferometric Observations of Herbig Ae/Be Sources: Inner Disk Temperature Profiles
Authors:
Eisner, J. A.; Chiang, E. I.; Lane, B. F.; Akeson, R. L.
Affiliation:
AA(Department of Astronomy, University of California, Berkeley, CA.; Miller Fellow.), AB(Department of Astronomy, University of California, Berkeley, CA.; Alfred P. Sloan Research Fellow.), AC(MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA.; Pappalardo Fellow.), AD(Michelson Science Center, California Institute of Technology, Pasadena, CA.)
Publication:
The Astrophysical Journal, Volume 657, Issue 1, pp. 347-358. (ApJ Homepage)
Publication Date:
03/2007
Origin:
UCP
ApJ Keywords:
Stars: Circumstellar Matter, stars: individual (AB Aur), Stars: Individual: Alphanumeric: AS 442, stars: individual (CQ Tau), stars: individual (MWC 120), Stars: Individual: Alphanumeric: MWC 480, stars: individual (MWC 758), Stars: Individual: Alphanumeric: MWC 1080, stars: individual (T Ori), stars: individual (V1295 Aql), stars: individual (V1685 Cyg), stars: individual (VV Ser), Stars: Pre-Main-Sequence, Techniques: High Anular Resolution, Techniques: Interferometric
Abstract Copyright:
(c) 2007: The American Astronomical Society
DOI:
10.1086/510833
Bibliographic Code:
2007ApJ...657..347E

Abstract

We 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.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints
    


SAO/NASA ADS Homepage | ADS Sitemap | Query Form | Basic Search | Preferences | HELP | FAQ