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J/PASP/117/676      LHS faint proper-motion stars            (Reid+, 2005)

Probing the LHS catalog. II. Faint proper-motion stars. Reid I.N., Gizis J.E. <Publ. Astron. Soc. Pac., 117, 676-698 (2005)> =2005PASP..117..676R
ADC_Keywords: Stars, dwarfs ; Proper motions ; Parallaxes, trigonometric ; Photometry, infrared Abstract: We present low-resolution spectroscopic observations of faint proper-motion stars from the LHS Catalogue, concentrating on stars with mr>16.5 and µ>0.5"/yr. The present paper includes observations and spectral classifications for 294 M dwarfs, M subdwarfs (sdM), and extreme M subdwarfs (esdM). We also identify white dwarfs among the faintest LHS stars. We have cross-referenced this sample against the Two Micron All Sky Survey (2MASS) sources, and list data for the detected objects. We discuss stars of individual interest, as well as the characteristics of the overall sample. As expected, a significant number of the stars in this proper-motion-selected sample are halo subdwarfs, including an esdM dwarf, LHS 3481, that is likely to lie within 20pc of the Sun. None of the subdwarfs show Hα emission. Description: The new observations described in this paper were obtained at a number of facilities over the last decade. Most targets were observed with the Double Spectrograph at the Hale 200 inch (5m) telescope between 1995 and 1999. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 106 257 Red dwarfs table4.dat 98 39 White dwarfs table6.dat 62 80 Parallax stars
See also: I/87B : LHS Catalogue, 2nd Edition (Luyten 1979) I/279 : Revised Luyten Half-Second Catalogue (Bakos+ 2002) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- LHS LHS number 5 A1 --- m_LHS Multiplicity index on LHS 7- 22 A16 --- 2MASSJ 2MASSJ designation (HHMMSSss+DDMMSSs) 24- 27 F4.1 mag rmag r magnitude 29- 33 F5.2 mag Jmag J magnitude 35- 39 F5.2 mag Hmag H magnitude 41- 45 F5.2 mag Ksmag Ks magnitude 47- 50 F4.2 --- CaH1 ?=- CaH1 index (1) 52- 55 F4.2 --- CaH2 CaH2 index (1) 57- 60 F4.2 --- CaH3 CaH3 index (1) 62- 65 F4.2 --- TiO5 TiO5 index (1) 67- 73 A7 --- SpType Spectral type 75- 80 F6.2 pc Dist Distance 82- 87 F6.3 mag JMAG Absolute J magnitude 89-106 A18 --- Com Comments (2)
Note (1): Spectroscopic indices = F(W)/F(S1+S2): ------------------------------------ Band S1 W S2 ------------------------------------ TiO5 7042-7046 7126-7135 CaH1 6345-6355 6380-6390 6410-6420 CaH2 7042-7046 6814-6846 CaH3 7042-7046 6960-6990 ------------------------------------ Note (2): G97 = Gizis, 1997, Cat. J/AJ/113/805
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 4 I4 --- LHS LHS number 5 A1 --- m_LHS Multiplicity index on LHS 7- 22 A16 --- 2MASSJ 2MASSJ designation (HHMMSSss+DDMMSSs) 24- 27 F4.1 mag rmag r magnitude 29- 33 F5.2 mag Jmag ?=- J magnitude 35- 39 F5.2 mag Hmag ?=- H magnitude 41- 45 F5.2 mag Ksmag ?=- Ks magnitude 47- 51 A5 --- SpType Spectral type 53- 98 A46 --- Com Comments and reference
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 4 I4 --- LHS LHS number 5 A1 --- m_LHS Multiplicity index on LHS 7- 22 A16 --- 2MASSJ 2MASSJ designation (HHMMSSss+DDMMSSs) 24- 30 A7 --- SpType Spectral type 32- 36 F5.2 mag JMAG Absolute J magnitude 38- 42 F5.2 mag HMAG Absolute H magnitude 44- 48 F5.2 mag KsMAG Absolute Ks magnitude 50- 55 F6.4 mas Plx Parallax 57- 62 F6.4 mas e_Plx rms uncertainty on Plx
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 21-Aug-2007
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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