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Spectroscopic Follow-up of Discoveries from the NEOWISE Proper Motion Survey

Greco, Jennifer J. and Schneider, Adam C. and Cushing, Michael C. and Kirkpatrick, J. Davy and Burgasser, Adam J. (2019) Spectroscopic Follow-up of Discoveries from the NEOWISE Proper Motion Survey. Astronomical Journal, 158 (5). Art. No. 182. ISSN 1538-3881. doi:10.3847/1538-3881/ab3ebe.

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We present low-resolution near-infrared spectra of discoveries from an all-sky proper motion search conducted using multi-epoch data from the Wide-field Infrared Survey Explorer. Using the data from NEOWISE, along with the AllWISE catalog, Schneider et al. conducted an all-sky proper motion survey to search for nearby objects with high proper motions. Here, we present a follow-up spectroscopic survey of 65 of their discoveries, which focused primarily on potentially nearby objects (d < 25 pc), candidate late-type brown dwarfs (≥L7), and subdwarf candidates. We found 31 new M dwarfs, 18 new L dwarfs, and 11 new T dwarfs. Of these, 13 are subdwarfs, including one new sdL1 and two new sdL7s. Eleven of these discoveries, with spectral types ranging from M7 to T7 (including one subdwarf) are predicted to be within 25 pc, adding to the number of known objects in the solar neighborhood. We also discovered three new early-type T subdwarf candidates, one sdT1, one sdT2, and one sdT3, which would increase the number of known early-type T subdwarfs from two to five.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Greco, Jennifer J.0000-0002-4649-1568
Schneider, Adam C.0000-0002-6294-5937
Cushing, Michael C.0000-0001-7780-3352
Kirkpatrick, J. Davy0000-0003-4269-260X
Burgasser, Adam J.0000-0002-6523-9536
Additional Information:© 2019 The American Astronomical Society. Received 2019 June 28; revised 2019 August 23; accepted 2019 August 23; published 2019 October 14. This paper includes data gathered from the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile, and is based in part on observations from Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory (NOAO Prop. ID 2016B-0003; PI: A. Schneider), which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, and NEOWISE which is a project of the Jet Propulsion Laboratory/California Institute of Technology. WISE and NEOWISE are funded by the National Aeronautics and Space Administration. This research has benefited from the M, L, T and Y dwarf compendium hosted at This research made use of the SIMBAD database, operated at CDS, Strasbourg, France. Facilities: IRTF(SpeX) - Infrared Telescope Facility, Magellan:Baade(FIRE) - , Blanco(ARCoIRIS). - Software: Spextool (Vacca et al. 2003; Cushing et al. 2004).
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:Brown dwarfs; L dwarfs; T dwarfs; M dwarf stars; L subdwarfs; T subdwarfs; M subdwarf stars; Low mass stars; Spectroscopy; Infrared astronomy
Issue or Number:5
Classification Code:Unified Astronomy Thesaurus concepts: Brown dwarfs (185); L dwarfs (894); T dwarfs (1679); M dwarf stars (982); L subdwarfs (896); T subdwarfs (1680); M subdwarf stars (986); Low mass stars (2050); Spectroscopy (1558); Infrared astronomy (786)
Record Number:CaltechAUTHORS:20191015-133133338
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Official Citation:Jennifer J. Greco et al 2019 AJ 158 182
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99275
Deposited By: Tony Diaz
Deposited On:15 Oct 2019 22:34
Last Modified:16 Nov 2021 17:45

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