Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (233) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (2)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Magnetospheric accretion models for T Tauri stars. 1: Balmer line profiles without rotation
Authors:
Hartmann, Lee; Hewett, Robert; Calvet, Nuria
Affiliation:
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, US), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, US), AC(Centro de Investigaciones de Astronomia, Merida, Venezuela)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 426, no. 2, p. 669-687 (ApJ Homepage)
Publication Date:
05/1994
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
BALMER SERIES, SPECTRAL EMISSION, STELLAR MAGNETIC FIELDS, STELLAR MAGNETOSPHERES, STELLAR MASS ACCRETION, T TAURI STARS, ASTRONOMICAL MODELS, BOUNDARY LAYERS, RADIATIVE TRANSFER, STELLAR ENVELOPES, STELLAR PHYSICS
DOI:
10.1086/174104
Bibliographic Code:
1994ApJ...426..669H

Abstract

We argue that the strong emission lines of T Tauri stars are generally produced in infalling envelopes. Simple models of infall constrained to a dipolar magnetic field geometry explain many peculiarities of observed line profiles that are difficult, if not impossible, to reproduce with wind models. Radiative transfer effects explain why certain lines can appear quite symmetric while other lines simultaneously exhibit inverse P Cygni profiles, without recourse to complicated velocity fields. The success of the infall models in accounting for qualitative features of observed line profiles supports the proposal that stellar magnetospheres disrupt disk accretion in T Tauri stars, that true boundary layers are not usually present in T Tauri stars, and that the observed 'blue veiling' emission arises from the base of the magnetospheric accretion column.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
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