2023RNAAS...7...36M

Query : 2023RNAAS...7...36M

2023RNAAS...7...36M - Research Notes of the AAS, 7, 36 (2023/March-0)

Deep DECam Y-band Follow-up of WISEA J153429.75-104303.3 (a.k.a. “The Accident”).

MEISNER A.M., CASELDEN D., SCHLAFLY E.F., ZELKO I.A., KIRKPATRICK J.D. and MAROCCO F.

Abstract (from CDS):

WISEA J153429.75-104303.3 (a.k.a. “The Accident”) is a brown dwarf with unique observational properties unlike those of any other known (sub)stellar object. It is thought to be a very cold, metal-poor brown dwarf, and potentially the first identified Y-type subdwarf. Although WISEA J153429.75-104303.3 is extremely faint at λ ∼ 1.25 μm, low-temperature atmosphere models suggest that Y-band flux could increase dramatically relative to J-band as metallicity decreases from solar. We therefore obtained deep Y-band follow-up imaging of WISEA J153429.75-104303.3 with the Dark Energy Camera, and report a resulting Y-band limit of Y > 21.79 mag (Vega, 5σ).

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): T dwarfs - Y dwarfs - Metallicity

Simbad objects: 1

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Number of rows : 1
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 WISEA J153429.75-104303.3 BD? 15 34 30.76516 -10 42 37.5166           ~ 14 0

Query : 2023RNAAS...7...36M

Basic data :
WISEA J153429.75-104303.3 -- Brown Dwarf Candidate
Other object types: otypes_help 		BD? (2014yCat), MIR (CWISE,WISEA)
ICRS coord. (ep=J2000) : 		15 34 30.76516 -10 42 37.5166 (Middle-IR) [ ] C 2021ApJS..253....7K
FK4 coord. (ep=B1950 eq=1950) : 		15 31 51.46188 -10 30 36.8280 [ ]
Gal coord. (ep=J2000) : 		354.74239097 +35.27835348 [ ]
Proper motions mas/yr : 		-1324.4 -2435.9 [51.7 24.8 90] C 2021ApJS..253....7K
Radial velocity / Redshift / cz : 		V(km/s) -116 [4] / z(spectroscopic) -0.000387 [0.000013] / cz -115.98 [4.00]
   (NIR) C 2025Natur.645...62F
Parallaxes (mas): 		47.8 [14.3] C 2021ApJS..253....7K
Fluxes (2) :
J 24.34 [0.13] D 2025Natur.645...62F
H 22.53 [0.05] C 2025Natur.645...62F
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Identifiers (2) :
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CWISE J153429.19-104318.9 WISEA J153429.75-104303.3

References (14 between 1850 and 2026) (Total 14)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 1    Distance : 1    Fe/H : 1    Plx : 1    PM : 2   

   

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WISEA J153429.75-104303.3

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