2024RNAAS...8..294G

Query : 2024RNAAS...8..294G

2024RNAAS...8..294G - Research Notes of the AAS, 8, 294 (2024/November-0)

Spectroscopic Analysis of CWISE J151044.74-524923.5, A Wide L Dwarf Companion to the L 262-74 System.

GRAMAIZE L., SCHNEIDER A.C., BICKLE T.P., GAGNE J., ROTHERMICH A., MAROCCO F., FAHERTY J.K., MEISNER A.M., KIRKPATRICK J.D., POPINCHALK M., KUCHNER M.J. (The Backyard Worlds: Planet 9 Collaboration)

Abstract (from CDS):

We present the spectroscopy of CWISE J151044.74-524923.5, a wide low-mass companion to the nearby (∼24.7 pc) L 262-74 system. Analyzing the near-infrared spectrum obtained with the TripleSpec4 spectrograph on the Southern Astrophysical Research Telescope, we confirm that it is a brown dwarf with unusually red colors. Although this redness can be characteristic of young, low-gravity brown dwarfs, we assess that this object is likely a field object being reddened by factors other than youth. We assign it a spectral type of L6 (pec). Finally, we highlight new TESS data that provide further evidence of the multiplicity of the central system.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Spectroscopy - Near infrared astronomy - Multiple stars - L dwarfs - Brown dwarfs

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2MASSI J0103320+193536 BD* 01 03 32.03712 +19 35 36.1824           L6V 93 0
2 2MASSI J1010148-040649 BD* 10 10 14.80704 -04 06 49.9320           L6 73 0
3 L 262-74 A PM* 15 10 40.4767514715 -52 48 19.058442829           ~ 5 0
4 L 262-74 ** 15 10 40.4769311714 -52 48 19.043389945   12.90 11.38 11.037   M2V(e) 20 0
5 2MASS J15104501-5249211 * 15 10 45.01416 -52 49 21.1440           ~ 2 0
6 HD 134240 * 15 10 49.4448217104 -52 44 52.629016524   10.83 10.59     A0V 7 0

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