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Cited by 560

The DOI matches its Crossref record; 106 of the 106 references it cites were found in a registry or an index.

New Spectral Types L and T

Open access
Kirkpatrick, J. Davy·2005·Annual Review of Astronomy and Astrophysics

Abstract

▪ Abstract The establishment of new spectral classes cooler than type M has had a brief, yet already rich, history. Prototypes of the new “L dwarf” and “T dwarf” classes were first found in the late 1980s to mid-1990s, with a flood of new discoveries occurring in the late 1990s with the advent of deep, large-area, digital sky surveys. Over four hundred and fifty L and T dwarfs are now cataloged. This review concentrates on the spectroscopic properties of these objects, beginning with the establishment of classification schemes rooted in the MK Process. The resulting grid of spectral types is then used as a tool to ferret out the underlying physics. The temperature ranges covered by these spectral types, the complex chemical processes responsible for the shape of their emergent spectra, their nature as either true stars or brown dwarfs, and their number density in the Galaxy are discussed. Two promising avenues for future research are also explored: the extension of the classification system to three dimensions to account for gravity- and metallicity-dependent features, and the capability of newer large-area surveys to uncover brown dwarfs cooler than those now recognized.

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Crossref · 10.1146/annurev.astro.42.053102.134017

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Metadata

Authors
Kirkpatrick, J. D.
Venue
Annual Review of Astronomy and Astrophysics
Published
2005-09-01
Volume
43
Issue
1
Pages
195-245
ISSN
  • 0066-4146 (ISSN-L)
  • 1545-4282
OpenAlex
W2118109196
Cited by
560
References
106
FWCI
2.55
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: New Spectral Types L and T. https://app.cochat.ai/papers/10.1146/annurev.astro.42.053102.134017
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Kirkpatrick, J. D. (2005). New Spectral Types L and T. Annual Review of Astronomy and Astrophysics. https://doi.org/10.1146/annurev.astro.42.053102.134017

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