2019ApJ...881...17M


Query : 2019ApJ...881...17M

2019ApJ...881...17M - Astrophys. J., 881, 17-17 (2019/August-2)

CWISEP J193518.59-154620.3 an extremely cold brown dwarf in the solar neighborhood discovered with CatWISE.

MAROCCO F., CASELDEN D., MEISNER A.M., KIRKPATRICK J.D., WRIGHT E.L., FAHERTY J.K., GELINO C.R., EISENHARDT P.R.M., FOWLER J.W., CUSHING M.C., CUTRI R.M., GARCIA N., JARRETT T.H., KOONTZ R., MAINZER A., MARCHESE E.J., MOBASHER B., SCHLEGEL D.J., STERN D. and TEPLITZ H.I.

Abstract (from CDS):

We present the discovery of an extremely cold, nearby brown dwarf in the solar neighborhood, found in the CatWISE catalog. Photometric follow-up with Spitzer reveals that the object, CWISEP J193518.59-154620.3, has ch1-ch2 = 3.24 ± 0.31 mag, making it one of the reddest brown dwarfs known. Using the Spitzer photometry and the polynomial relations from Kirkpatrick et al. we estimate an effective temperature in the ∼270-360 K range, and a distance estimate in the 5.6-10.9 pc range. We combined the WISE, NEOWISE, and Spitzer data to measure a proper motion of µαcosδ=337±69 mas yr–1, µδ = -50 ± 97 mas yr–1, which implies a relatively low tangential velocity in the range 7-22 km s–1.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): brown dwarfs - infrared: stars - proper motions - solar neighborhood

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 WISE J035000.32-565830.2 BD* 03 50 00.32784 -56 58 30.2340           Y1 28 0
2 WISEA J085510.74-071442.5 BD* 08 55 10.83168 -07 14 42.5256           Y2 85 0
3 CWISE J193518.61-154620.7 BD? 19 35 18.60792 -15 46 20.8074           ~ 6 0

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