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/0510579)
· References in the article
· Citations to the Article (17) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (17)
· Associated Articles
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. I. DENIS J220002.05-303832.9AB
Authors:
Burgasser, Adam J.; McElwain, Michael W.
Affiliation:
AA(Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 37, Cambridge, MA 02139-4307 ), AB(Division of Astronomy and Astrophysics, UCLA, 405 Hilgard Avenue, Los Angeles, CA 90095-1562 )
Publication:
The Astronomical Journal, Volume 131, Issue 2, pp. 1007-1014. (AJ Homepage)
Publication Date:
02/2006
Origin:
UCP
AJ Keywords:
Stars: Binaries: Visual, stars: individual (DENIS J220002.05-303832.9), Stars: Low-Mass, Brown Dwarfs
DOI:
10.1086/499042
Bibliographic Code:
2006AJ....131.1007B

Abstract

We present the discovery of the common proper motion M9+L0 binary DENIS J220002.05-303832.9AB, identified serendipitously with the SpeX near-infrared imager/spectrograph. Spectral types are derived from resolved near-infrared spectroscopy of the well-separated (1.09"+/-0.06") components and comparison to equivalent data for M and L dwarf spectral standards. Physical association is deduced from the angular proximity of the sources, their common proper motion, and their similar spectrophotometric distances (35+/-2 pc). The estimated distance of this pair implies a projected separation of 38+/-3 AU, wider than typical separations for other M dwarf/L dwarf binaries but consistent with the maximum separation/total system mass trend previously identified by Burgasser et al. We discuss the DENIS 2200-3038AB system in context with other low-mass binaries and its role in the study of dust formation processes and activity trends across the transition between the M and L dwarf spectral classes.

Associated Articles

Part 1     Part  2    

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