2004A&A...428L..25S

Query : 2004A&A...428L..25S

2004A&A...428L..25S - Astronomy and Astrophysics, volume 428L25-28 (2004/12-4)

SSSPM J1444-2019: An extremely high proper motion, ultracool subdwarf.

SCHOLZ R.-D., LODIEU N. and McCAUGHREAN M.J.

Abstract (from CDS):

We present the discovery of a new extreme high proper motion object (∼3.5arcsec/year) which we classify as an ultracool subdwarf with [M/H]~-0.5. It has a formal spectral type of sdM9 but also shows L-type features: while the VO bands are completely absent, it exhibits extremely strong TiO absorption in its optical spectrum. With a radial velocity of about -160km/s and a rough distance estimate of 16-24pc, it is likely one of the nearest halo members crossing the Solar neighbourhood with a heliocentric space velocity of (U,V,W)=(-244,-256,-100)±(32,77,6)km/s.

Abstract Copyright: ∼

Journal keyword(s): surveys - astrometry - stars: kinematics - stars: low-mass, brown dwarfs - subdwarfs - solar neighbourhood

Simbad objects: 14

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Number of rows : 14
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 NAME Teegarden's Star LM* 02 53 00.8917932409 +16 52 52.632190137   17.21 15.14 13.03 10.65 dM6 207 0
2 LP 944-20 LM* 03 39 35.2523500210 -35 25 43.641996333     18.69 16.39 13.288 M9.5Ve 308 0
3 2MASS J05325346+8246465 BD* 05 32 54.4345118405 +82 46 45.161005926           esdL7 65 0
4 SSSPM J0829-1309 BD* 08 28 34.1716399433 -13 09 19.841445886         16.07 L2 59 0
5 SSSPM J1013-1356 LM* 10 13 07.3464466893 -13 56 21.261502194       18.73 16.01 sdM9.5 44 1
6 SSSPM J1444-2019 BD* 14 44 20.3377033020 -20 19 25.483786838       18.57 14.97 sdL0 36 1
7 HD 134440 PM* 15 10 12.9678589986 -16 27 46.522175847 10.69 10.217 9.426 8.913 8.441 K2V 295 0
8 HD 134439 PM* 15 10 13.0873110544 -16 22 45.877317625 10.03 9.837 9.066 8.604 8.160 sd:K1Fe-1 341 0
9 LSR J1610-0040 LM* 16 10 28.9498230750 -00 40 53.964223684       17.51 14.81 sdM6.5 56 0
10 2MASS J16262034+3925190 BD* 16 26 20.1332795396 +39 25 19.488610341       19.67 16.68 esdL4 55 0
11 EGGR 199 WD* 17 49 50.1474575152 +82 46 26.061955719   14.92   14.5   DA6.8 94 0
12 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 616 0
13 * eps Ind B BD* 22 04 10.5951812451 -56 46 58.239102418     24.12 20.8 15.60 T1V+T6V 176 1
14 NAME Local Arm reg ~ ~           ~ 649 0

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