2025AJ....170..277Z

Query : 2025AJ....170..277Z

2025AJ....170..277Z - Astron. J., 170, 277 (2025/November-0)

High Proper Motion Discoveries from the UKIRT Hemisphere Survey.

ZHANG W., SCHNEIDER A.C., BICKLE T.P., BURGASSER A.J., SOFTICH E., MAROCCO F., BARDALEZ GAGLIUFFI D., FAHERTY J.K., MEISNER A.M., KIRKPATRICK J.D., KUCHNER M.J., KABATNIK M., KIWY F., SAINIO A., SCHUMANN J., SELG-MANN K., ANDERSEN N.S., BALLER B., BEAULIEU P., BELL J., CASELDEN D., COLIN G., DEREVEANCO A., FRANK C., GLEBOV K., GRAMAIZE L., HAMLET L.K., MARTIN D.W., PENDRILL W., PERLIN S., STENNER A., TANNER C., THEVENOT M. and THAKUR V.

Abstract (from CDS):

We used the third data release of the UKIRT Hemisphere Survey to locate previously unrecognized high proper motion objects. We identify a total of 127 new discoveries with total proper motions ≳300 mas yr–1. A significant fraction of these sources with counterparts in the Gaia DR3 catalog are found to be distant (>100 pc) low-mass stars, where their large tangential velocities and placement on color-magnitude diagrams suggest that they are likely low-metallicity M-type subdwarfs. Optical spectroscopy is used to confirm the low mass and low metallicity for two such sources. Using available optical and infrared photometry, we estimate the spectral type for all non-Gaia sources and find 10 likely late-M dwarfs, 15 objects with colors most consistent with L-type dwarfs, and nine possible T-type dwarfs. Follow-up spectroscopy is needed to confirm spectral types and further characterize these new discoveries.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar astronomy - Late-type stars - M subdwarf stars - Brown dwarfs

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

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 LP 440-52 LM* 14 39 00.3086540071 +18 39 38.710151529   19.6 18.39 17.3 14.64 sdM7 68 0

Query : 2025AJ....170..277Z

Basic data :
LP 440-52 -- Low-mass Star
Other object types: otypes_help 		PM* (2016ApJS,LHS,...), * (LP,PLX,...), LM* (1997AJ), NIR (2MASS), MIR (WISEA)
ICRS coord. (ep=J2000) : 		14 39 00.3086540071 +18 39 38.710151529 (Optical) [ 0.0445 0.0433 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 36 41.0277855012 +18 53 33.416713099 [ 0.0445 0.0433 90 ]
Gal coord. (ep=J2000) : 		019.7292817720154 +63.8856862372334 [ 0.0445 0.0433 90 ]
Proper motions mas/yr : 		-12.925 -1220.202 [0.060 0.056 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 179.7 [~] / z(~) 0.000600 [~] / cz 179.75 [~]
   (Opt) D 1997AJ....113..806G
Parallaxes (mas): 		25.8650 [0.0560] A 2020yCat.1350....0G
Spectral type: 		sdM7 C 2019AJ....157...63K
Fluxes (8) :
B 19.6 [~] E 2003AJ....125..984M
V 18.39 [~] D 1995GCTP..C......0V
R 17.3 [~] E 2003AJ....125..984M
G 16.443266 [0.002923] C 2020yCat.1350....0G
I 14.64 [~] D 2007ApJ...657..494B
J 13.194 [0.029] C 2003yCat.2246....0C
H 12.733 [0.030] C 2003yCat.2246....0C
K 12.479 [0.025] C 2003yCat.2246....0C
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Identifiers (11) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

LP 440-52 2MASS J14390030+1839385 TIC 462584028 Gaia DR2 1236134438678071168
LHS 377 NLTT 37994 USNO-B1.0 1086-00230763 Gaia DR3 1236134438678071168
LSPM J1439+1839 PLX 3312.01 WISEA J143900.30+183925.9

References (68 between 1850 and 2026) (Total 68)
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

Distance : 4    Fe/H : 2    Plx : 5    PM : 6    SpT : 4   

   

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LHS 377 LSPM J1439+1839 2MASS J14390030+1839385 NLTT 37994 USNO-B1.0 1086-00230763
WISEA J143900.30+183925.9 Gaia DR2 1236134438678071168 Gaia DR3 1236134438678071168

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