New Distant Companions to Known Nearby Stars. I. GJ 4047B, GJ 718B, GJ 747.2C, GJ 4100B, and GJ 4153B
- 1 June 2002
- journal article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 123 (6) , 3434-3441
- https://doi.org/10.1086/340703
Abstract
In an ongoing survey for high proper motion stars at low galactic latitudes, we have identified 5 previously uncatalogued common proper motion companions to stars listed in the Preliminary Version of the Third Catalogue of Nearby Stars (GJ stars). For each system, the relative proper motion between the components is less than 5% of the common proper motion of the pair. Spectra of the pairs have been obtained at the Lick 3-m Shane Telescope, confirming that the systems are indeed wide separation binaries. The systems are classified as follows: GJ 4047AB = K5 V + M5 V, GJ 718AB = K5 V + M4.5 V, GJ 747.2ABC = (K7 V + K7 V) + M4 Ve, GJ 4100AB = M1 V + M4.5 Ve, and GJ 4153AB = M0.5 V + M3.5 V. The total area surveyed contains 346 Gliese stars, which suggests that approximately 1.5% of the stars listed in the Preliminary Version of the Third Catalogue of Nearby Stars have unrecognized proper motion companions. We predict that 15-50 more new distant companions to GJ stars will be discovered in the Digitized Sky Survey.Comment: 15 page, 5 figures, 2 tables, to appear in The Astronomical JournaKeywords
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This publication has 15 references indexed in Scilit:
- Three Newly Discovered M‐Dwarf Companions of Solar Neighborhood StarsPublications of the Astronomical Society of the Pacific, 2001
- New neighbours: II. An M9 dwarf at ${\vec d}\sim$ 4 pc, DENIS-P J104814.7-395606.1Astronomy & Astrophysics, 2001
- ICCD Speckle Observations of Binary Stars. XXIII. Measurements during 1982–1997 from Six Telescopes, with 14 New OrbitsThe Astronomical Journal, 2000
- The solar neighborhood IV: discovery of the twentieth nearest starThe Astronomical Journal, 1997
- M-Subdwarfs: Spectroscopic Classification and the Metallicity ScaleThe Astronomical Journal, 1997
- Multiplicity among M dwarfsThe Astrophysical Journal, 1992
- Wide Double Stars with Common Proper MotionPublished by Springer Nature ,1988
- G. P. Kuiper's spectral classifications of proper-motion starsThe Astrophysical Journal Supplement Series, 1985
- The importance of atmospheric differential refraction in spectrophotometryPublications of the Astronomical Society of the Pacific, 1982
- Spectral classification and photometry of high proper motion stars.The Astronomical Journal, 1967