CWISEP J193518.59-154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE

Federico Marocco; Dan Caselden; Aaron M. Meisner; J. Davy Kirkpatrick; Edward L. Wright; Jacqueline K. Faherty; Christopher R. Gelino; Peter R.M. Eisenhardt; John W. Fowler; Michael C. Cushing; Roc M. Cutri; Nelson Garcia; Thomas H. Jarrett; Renata Koontz; Amanda Mainzer; Elijah J. Marchese; Bahram Mobasher; David J. Schlegel; Daniel Stern; Harry I. Teplitz

doi:10.3847/1538-4357/ab2bf0

CWISEP J193518.59-154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE

Federico Marocco, Dan Caselden, Aaron M. Meisner, J. Davy Kirkpatrick, Edward L. Wright, Jacqueline K. Faherty, Christopher R. Gelino, Peter R.M. Eisenhardt, John W. Fowler, Michael C. Cushing, Roc M. Cutri, Nelson Garcia, Thomas H. Jarrett, Renata Koontz, Amanda Mainzer, Elijah J. Marchese, Bahram Mobasher, David J. Schlegel, Daniel Stern, Harry I. Teplitz

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22 Scopus citations

Abstract

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 mas yr^-1, μ _δ = -50 ±97 mas yr^-1, which implies a relatively low tangential velocity in the range 7-22 km s^-1.

Original language	English (US)
Article number	17
Journal	Astrophysical Journal
Volume	881
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/ab2bf0
State	Published - Aug 10 2019
Externally published	Yes

Keywords

brown dwarfs
infrared: stars
proper motions
solar neighborhood

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/ab2bf0

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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., & Teplitz, H. I. (2019). CWISEP J193518.59-154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE. Astrophysical Journal, 881(1), Article 17. https://doi.org/10.3847/1538-4357/ab2bf0

Marocco, F, Caselden, D, Meisner, AM, Kirkpatrick, JD, Wright, EL, Faherty, JK, Gelino, CR, Eisenhardt, PRM, Fowler, JW, Cushing, MC, Cutri, RM, Garcia, N, Jarrett, TH, Koontz, R, Mainzer, A, Marchese, EJ, Mobasher, B, Schlegel, DJ, Stern, D & Teplitz, HI 2019, 'CWISEP J193518.59-154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE', Astrophysical Journal, vol. 881, no. 1, 17. https://doi.org/10.3847/1538-4357/ab2bf0

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title = "CWISEP J193518.59-154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE",

abstract = "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 mas yr-1, μ δ = -50 ±97 mas yr-1, which implies a relatively low tangential velocity in the range 7-22 km s-1.",

keywords = "brown dwarfs, infrared: stars, proper motions, solar neighborhood",

author = "Federico Marocco and Dan Caselden and Meisner, {Aaron M.} and Kirkpatrick, {J. Davy} and Wright, {Edward L.} and Faherty, {Jacqueline K.} and Gelino, {Christopher R.} and Eisenhardt, {Peter R.M.} and Fowler, {John W.} and Cushing, {Michael C.} and Cutri, {Roc M.} and Nelson Garcia and Jarrett, {Thomas H.} and Renata Koontz and Amanda Mainzer and Marchese, {Elijah J.} and Bahram Mobasher and Schlegel, {David J.} and Daniel Stern and Teplitz, {Harry I.}",

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doi = "10.3847/1538-4357/ab2bf0",

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T2 - An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE

AU - Marocco, Federico

AU - Caselden, Dan

AU - Meisner, Aaron M.

AU - Kirkpatrick, J. Davy

AU - Wright, Edward L.

AU - Faherty, Jacqueline K.

AU - Gelino, Christopher R.

AU - Eisenhardt, Peter R.M.

AU - Fowler, John W.

AU - Cushing, Michael C.

AU - Cutri, Roc M.

AU - Garcia, Nelson

AU - Jarrett, Thomas H.

AU - Koontz, Renata

AU - Mainzer, Amanda

AU - Marchese, Elijah J.

AU - Mobasher, Bahram

AU - Schlegel, David J.

AU - Stern, Daniel

AU - Teplitz, Harry I.

PY - 2019/8/10

Y1 - 2019/8/10

N2 - 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 mas yr-1, μ δ = -50 ±97 mas yr-1, which implies a relatively low tangential velocity in the range 7-22 km s-1.

AB - 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 mas yr-1, μ δ = -50 ±97 mas yr-1, which implies a relatively low tangential velocity in the range 7-22 km s-1.

KW - brown dwarfs

KW - infrared: stars

KW - proper motions

KW - solar neighborhood

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CWISEP J193518.59-154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE

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Keywords

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