2000PASP..112..610G

Query : 2000PASP..112..610G

2000PASP..112..610G - Publ. Astron. Soc. Pac., 112, 610-613 (2000/May-0)

Hubble space telescope observations of M subdwarfs.

GIZIS J.E. and REID I.N.

Abstract (from CDS):

We present the results of a Hubble Space Telescope snapshot program to search for very low mass stellar companions to nearby M subdwarfs. None of our nine targetted metal-poor primaries has companions more massive than the hydrogen burning limit, implying that the halo binary fraction is equal to or less than the Galactic disk binary fraction below 0.3 M☉. In addition, the more distant tertiary VB 12, an sdM3.0 companion to an F subdwarf double, is also unresolved. We show that the relation between WFPC2 F555W and F850LP photometry and ground-based V,I photometry is consistent with theoretical expectations. We also report that two recently observed Hyades M dwarfs appear single.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Stars: Low-Mass, Brown Dwarfs - Stars: Population II

Simbad objects: 20

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Number of rows : 20
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 Wolf 134 LM* 03 13 24.2289412566 +18 49 37.661544985   15.567 14.117 13.219 12.435 esdK7 59 0
2 Ross 585 PM* 03 30 44.8190409266 +34 01 07.190996589   14.0   12.26   sdM0 42 0
3 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
4 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
5 Cl* Melotte 25 LH 197 PM* 04 21 35.0894897880 +14 41 42.869631048   16.6 15.6 15.82   sdMp 48 0
6 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
7 LP 415-2120 Em* 04 33 42.8134443504 +18 45 59.175582372   17 15.37     M4.5e 35 0
8 G 86-27 PM* 05 10 31.3980510051 +31 17 35.358129347   15.8   14.3   dM4.5 17 0
9 LP 417-42 LM* 05 10 39.0753733822 +19 24 07.020164855   19.9   17.4   esdM6 38 0
10 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
11 G 105-23 LM* 06 14 01.5850603659 +15 09 54.297979647   16.23   13.6   sdM2.0 28 0
12 G 11-35 LM* 12 02 33.6593316712 +08 25 50.730959800   15.58   13.2   sdM2.0 36 0
13 G 165-47 LM* 14 06 55.5867880692 +38 36 56.042385139   16.24   13.7   usdM1 47 0
14 LP 440-52 LM* 14 39 00.3086540071 +18 39 38.710151529   19.6 18.39 17.3 14.64 sdM7 68 0
15 LP 803-27 LM* 15 45 40.2078348961 -20 36 16.695643169     16.57     sdM5.0 25 0
16 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
17 LP 141-1 LM* 18 45 52.2450125367 +52 27 40.624600956   16.72 14.96 14.67   d/sdM4 48 0
18 Wolf 1037 LM* 22 28 49.0327130449 +05 48 14.032570122   15.63   13.77   usdK7 36 0
19 G 128-34 LM* 23 08 26.0376705399 +31 40 23.802272530   16.19   13.8   esdM0.5 29 0
20 HD 219617C PM* 23 17 06.0291829033 -13 50 52.312237646   19.29 16.96 16.67   esdM3 29 1

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