Poster Open Access

A High Resolution H- and K-Band Spectroscopic Sequence of Ultracool Dwarfs

Greco, Jennifer J.; Cushing, Michael C.

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  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.4564681", 
  "language": "eng", 
  "title": "A High Resolution H- and K-Band Spectroscopic Sequence of Ultracool Dwarfs", 
  "issued": {
    "date-parts": [
  "abstract": "<p>Brown dwarfs are substellar objects too low mass to initiate the hydrogen fusion necessary to be considered stars. Ultracool dwarfs, objects with spectral types of M7 or later,&nbsp;are a mix of low mass stars and brown dwarfs. We have obtained the first high-resolution (R &sim; 45, 000) H- and K-band spectral sequence of ultracool dwarfs with spectral types ranging from M1.5 V to T6, including known low-gravity objects at six spectral types (M9, L0, L1, L2, L3, L5). All spectra were obtained using the Immersion Grating INfrared Spectrometer (IGRINS) at a resolving power of R &sim; 45,000. We compared 22 of our objects to synthetic spectra created from the atmospheric models of Saumon &amp; Marley (2008), to measure specific properties including effective temperature, cloud properties, rotational velocities, and surface gravity.</p>", 
  "author": [
      "family": "Greco, Jennifer J."
      "family": "Cushing, Michael C."
  "id": "4564681", 
  "event-place": "virtual", 
  "type": "graphic", 
  "event": "The 20.5th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS20.5)"
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