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Discovery of the Young L Dwarf WISE J174102.78–464225.5

Schneider, Adam C. and Cushing, Michael C. and Kirkpatrick, J. Davy and Mace, Gregory N. and Gelino, Christopher R. and Faherty, Jacqueline K. and Fajardo-Acosta, Sergio and Sheppard, Scott S. (2014) Discovery of the Young L Dwarf WISE J174102.78–464225.5. Astronomical Journal, 147 (2). Art. No. 34. ISSN 0004-6256. https://resolver.caltech.edu/CaltechAUTHORS:20140218-075708116

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Abstract

We report the discovery of the L dwarf WISE J174102.78–464225.5, which was discovered as part of a search for nearby L dwarfs using the Wide-field Infrared Survey Explorer (WISE). The distinct triangular peak of the H-band portion of its near-infrared spectrum and its red near-infrared colors (J – K_S = 2.35 ± 0.08 mag) are indicative of a young age. Via comparison to spectral standards and other red L dwarfs, we estimate a near-infrared spectral type of L7 ± 2 (pec). From a comparison to spectral and low-mass evolutionary models, we determine self-consistent effective temperature, log g, age, and mass values of 1450 ± 100 K, 4.0 ± 0.25 (cm s^(–2)), 10-100 Myr, and 4-21 M_(Jup), respectively. With an estimated distance of 10-30 pc, we explore the possibility that WISE J174102.78–464225.5 belongs to one of the young nearby moving groups via a kinematic analysis and we find potential membership in the β Pictoris or AB Doradus associations. A trigonometric parallax measurement and a precise radial velocity can help to secure its membership in either of these groups.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-6256/147/2/34DOIArticle
http://arxiv.org/abs/1311.5941arXivDiscussion Paper
ORCID:
AuthorORCID
Schneider, Adam C.0000-0002-6294-5937
Cushing, Michael C.0000-0001-7780-3352
Kirkpatrick, J. Davy0000-0003-4269-260X
Mace, Gregory N.0000-0001-7875-6391
Faherty, Jacqueline K.0000-0001-6251-0573
Fajardo-Acosta, Sergio0000-0001-9309-0102
Sheppard, Scott S.0000-0003-3145-8682
Additional Information:© 2014 American Astronomical Society. Received 2013 October 18; accepted 2013 November 22; published 2014 January 9. We would like to acknowledge the recently discovered young late-type L dwarf (and likely β Pictoris Moving Group member) PSO J318.5338−228603 (Liu et al. 2013), which was published during the refereeing phase of this manuscript. Its extremely red near-infrared colors and low estimated mass make it another great young, low-mass object for substellar evolution studies and exoplanetary comparisons. This research has made use of the SIMBAD database and VizieR catalog access tool, operated at CDS, Strasbourg, France. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation, and 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, funded by the National Aeronautics and Space Administration. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has benefitted from the SpeX Prism Spectral Libraries, maintained by Adam Burgasser at http://pono.ucsd.edu/∼adam/browndwarfs/spexprism. This research has benefitted from the M, L, T, and Y dwarf compendium housed at dwarfarchives.org. G.N.M. was a Visiting Astronomer at the Infrared Telescope Facility, which is operated by the University of Hawaii under Cooperative Agreement No. NNX−08AE38A with the National Aeronautics and Space Administration, Science Mission Directorate, Planetary Astronomy Program. The Brown Dwarf Spectroscopic Survey is hosted by UCLA and provided an essential comparison library for our moderate resolution spectroscopy.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Wide-field Infrared Survey ExplorerUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
NASANNX-08AE38A
Subject Keywords: brown dwarfs; stars: individual (WISE J174102.78–464225.5); stars: low-mass
Issue or Number:2
Record Number:CaltechAUTHORS:20140218-075708116
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140218-075708116
Official Citation:Discovery of the Young L Dwarf WISE J174102.78–464225.5 Adam C. Schneider et al. 2014 The Astronomical Journal 147 34
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43845
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Feb 2014 17:45
Last Modified:21 Feb 2020 00:41

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