Analysis of Keck HIRES spectra of early L-type dwarfs

Details Analysis of Keck HIRES spectra of early L-type dwarfs Analysis of Keck HIRES spectra of early L-type dwarfs

2001-03-24

arxiv.org/abs/astro-ph/0103402v1

Astronomy and Astrophysics

Astrophysics

AASTeX5.0. 26 pages, including all figures, Accepted for ApJ

Scientific paper

10.1086/321486

We present analyses of high resolution and medium resolution spectra of early L dwarfs. We used our latest set of model atmospheres to reproduce and analyze the observed features. We can model the optical flux and the atomic line profiles with the best accuracy to date. The models used to reproduce the observations include dust condensation and dust opacities. Compared to previous studies using older models we find that our dust treatment is much improved. The derived parameters for the objects are well in the expected range for old very low mass objects. This is also supported by the absence of Li in most of the objects. For the objects showing Li we can be almost certain that those are brown dwarfs. However, a spectral analysis in general, and this one in particular can only very roughly determine mass and age.

Affiliated with

Also associated with

No associations

Rating

Analysis of Keck HIRES spectra of early L-type dwarfs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Analysis of Keck HIRES spectra of early L-type dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of Keck HIRES spectra of early L-type dwarfs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-294385