2008A&A...484..575J


Query : 2008A&A...484..575J

2008A&A...484..575J - Astronomy and Astrophysics, volume 484, 575-579 (2008/6-3)

Spectroscopic distances of 28 nearby star candidates.

JAHREISS H., MEUSINGER H., SCHOLZ R.-D. and STECKLUM B.

Abstract (from CDS):

Twenty eight hitherto neglected candidates for the Catalogue of Nearby Stars (CNS) were investigated to verify their classification and to improve their distance estimates. All targets had at least a preliminary status of being nearby dwarf stars based on their large proper motions and relatively faint magnitudes. Better photometric and/or spectroscopic distances were required for selecting stars for further trigonometric parallax measurements. Low-resolution spectra were obtained with NASPEC at the Tautenburg 2m telescope and with CAFOS at the Calar Alto 2.2m telescope. The spectral types of M-type stars were determined by direct comparison of the target's spectra with those of comparison stars of known spectral types observed with the same instrument. The classification of earlier types was performed based on comparison with published spectral libraries. For most of the target stars reliable spectral types could be determined and in combination with 2MASS photometry new improved distance estimates became available. The majority were classified as M dwarfs including 11 stars within 25pc. The fainter component of LDS1365, previously thought to form a nearby common proper motion pair, is according to our results an unrelated high-velocity background star. For several other nearby common proper motion pairs our distance estimates of the fainter components are in good agreement with Hipparcos distances of the brighter components. The three stars in our sample that were previously thought to be white dwarfs (GJ2091, GJ2094, GJ2098) turned out to be more distant high-velocity F- to K-type (sub)dwarfs. For the star with the largest tangential velocity (GJ2091; vtan>500km/s) we have additional evidence for its probable Galactic halo membership from a measured large radial velocity of 266±25km/s and from its UBV photometry indicating a low metallicity.

Abstract Copyright:

Journal keyword(s): Galaxy: solar neighborhood - Galaxy: kinematics and dynamics

CDS comments: Paragraph 4.8 LP 333-39 is a probable misprint for LP 333-29.

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 Wolf 33 PM* 00 51 29.8364367571 +58 18 07.301720275   11.95 10.64 9.8 8.995 M0.0V 69 0
2 G 111-61 PM* 08 12 26.5768877044 +43 09 28.239609210   15.29   13.968   M3.5 20 0
3 G 194-57 PM* 09 08 50.7703850002 +54 07 18.319498198   16.3   14.1   M4.0 13 0
4 G 195-47 PM* 09 53 33.5236029184 +50 45 03.912435678   13.11 12.045 11.579   M1.5V 30 0
5 G 147-13 PM* 11 00 35.5951787944 +37 28 50.439192394   17.0   14.1   M5V 18 0
6 LP 264-44 PM* 11 22 36.2862567888 +35 46 19.405236000   16.26   13.7   M4.0 12 0
7 LP 433-54 PM* 11 47 52.4913532968 +17 42 39.959829576   16.50 14.70 14.44   M3.0 11 0
8 G 13-6 PM* 12 04 56.3008991352 +04 19 56.169669288   15.68   14.7   sd:G0: 6 0
9 G 148-47 PM* 12 21 26.7261929896 +30 38 37.634237822       15.22 11.93 M4.5e 21 0
10 G 148-48 LM* 12 21 27.0545361738 +30 38 35.677114197       15.24 11.93 M5 16 0
11 BD+25 2534 HS* 12 37 23.5161671712 +25 03 59.867922240 9.117 10.26 10.59 10.642 10.809 sdB1(k) 250 0
12 GD 266 PM* 12 37 52.8520844472 +37 30 31.546270584   16.34 15.73 15.66   sd:K5: 7 0
13 G 60-23 PM* 12 38 36.2174765368 +05 21 38.385483097   16.4   14.4   M4.5 15 0
14 G 60-27 PM* 12 43 47.5550869583 +00 03 19.947135349   16.1   13.8   M4.0 16 0
15 G 164-46 PM* 13 08 28.6560930864 +40 27 10.803659976   14.80 14.00 13.3   sd:K0: 5 0
16 G 164-47 Er* 13 09 34.9717027547 +28 59 06.364897756   15.93 14.078 13.707 11.14 M4.8V 75 0
17 LP 322-835 Pe* 13 09 41.9842335384 +29 01 56.774432388   18.5   16.5   M3.5 8 0
18 G 238-39 PM* 13 31 59.9907475383 +66 36 00.773507062   15.73 14.032 13.746 11.34 M3.5 20 0
19 G 63-45 PM* 13 39 15.3355762565 +15 40 58.074987352   15.74   13.1   M3.5 14 0
20 G 223-43 PM* 14 07 47.9567871684 +57 11 45.416857632   15.1   13.7   M4.0 22 0
21 G 165-60 PM* 14 16 42.0956391204 +36 00 50.864363662   13.74   12.426   M2.0 18 0
22 G 200-31 PM* 14 20 39.3673534947 +46 02 33.878101553   16.4   14.5   M4.5 15 0
23 G 65-53 PM* 14 28 17.5765067366 +05 18 45.798441766   14.4   12.723   M3.5V 22 0
24 G 65-54 PM* 14 28 21.5191289479 +05 19 01.297754885   13.6   12.123   M3.0V 23 0
25 G 256-20 PM* 15 03 34.7924964063 +84 38 26.329603822   15.1   13.0   M4.0 15 0
26 HD 139477 PM* 15 35 20.0439227568 +60 05 13.171084080       12.1   K3V 64 0
27 LP 99-392 PM* 15 35 25.6826877528 +60 05 07.573768260   14.5   13.083   M4.1 26 1
28 SSSPM J1549-3544 WD* 15 48 40.1716206759 -35 44 26.172479855           DC11 8 0
29 G 16-11 PM* 15 49 36.7408295022 +00 17 48.991412805   14.83   12.857   M3.0 15 0
30 LP 274-10 PM* 15 50 18.5271339744 +34 37 15.590442324   17.4   15.5   M4.5e 8 0
31 LP 274-11 PM* 15 50 18.5995356696 +34 37 11.057620476   13.9   12.805   M3.0 14 0
32 G 202-61 PM* 16 34 13.7252721941 +54 23 39.891045816   12.4   11.402   M1.0V 23 0
33 HD 164595 PM* 18 00 38.8944915648 +29 34 18.921829044   7.72   6.7   G2V 117 0
34 HD 164595B PM* 18 00 45.4291849128 +29 33 56.751291612   13.4   12.173   M2.5V 30 1

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