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U.S. Naval Observatory CCD parallaxes of faint stars. I - Program description and first results
Abstract
The U.S. Naval Observatory CCD trigonometric parallax program is described in detail, including the instrumentation employed, observing procedures followed, and reduction procedures applied. Astrometric results are presented for 72 stars ranging in apparent brightness from V = 15.16 to 19.58. Photometry is presented for the parallax stars and for all 426 individual reference stars employed in the astrometric solutions. Seventeen of the 23 stars with V(tau) greater than 200 km/s form a well-delineated sequence of extreme subdwarfs covering M(V) between 11.5 and 14.5 in the M(V) vs V - I diagram. The transformation to the M(bol) vs log T(eff) plane is presented and the results are compared with various model interior computations. The coolest members of the extreme subdwarf sequence appear to be near the hydrogen-burning minimum mass limit for stars with metallicities of (M/H) about -2.
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Citations
Cited by
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Chabrier, G. (2003) · Publications of the Astronomical Society of the Pacific · doi:10.1086/376392 · Cited by 9,071
Monet, D. G., Levine, S. E., Canzian, B., Ables, H. D., Bird, A. R., Dahn, C. C., Guetter, H. H., Harris, H. C., Henden, A. A., Leggett, S. K., et al. (2003) · The Astronomical Journal · doi:10.1086/345888 · Cited by 2,117
Self-citationThe Limiting Effects of Dust in Brown Dwarf Model Atmospheres
Allard, F., Hauschildt, P. H., Alexander, D. R., Tamanai, A., & Schweitzer, A. (2001) · The Astrophysical Journal · doi:10.1086/321547 · Cited by 1,062
Kirkpatrick, J. D., Reid, I. N., Liebert, J., Cutri, R. M., Nelson, B., Beichman, C. A., Dahn, C. C., Monet, D. G., Gizis, J. E., & Skrutskie, M. F. (1999) · The Astrophysical Journal · doi:10.1086/307414 · Cited by 992
Self-citationNew Neighbors from 2MASS: Activity and Kinematics at the Bottom of the Main Sequence
Gizis, J. E., Monet, D. G., Reid, I. N., Kirkpatrick, J. D., Liebert, J., & Williams, R. J. (2000) · The Astronomical Journal · doi:10.1086/301456 · Cited by 503
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Metadata
- Authors
- Monet, D. G., Dahn, C. C., Vrba, F. J., Harris, H. C., Pier, J. R., Luginbuhl, C. B., & Ables, H. D.
- Venue
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Published
- 1992-02
- Volume
- 103
- Pages
- 638
- ISSN
- 0004-6256 (ISSN-L)
- OpenAlex
- W2021211778
- Cited by
- 390
- References
- 0
- FWCI
- 26.87
- Type
- journal article
- Language
- en
- Open access
- closed
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- Monet, D. G., Dahn, C. C., Vrba, F. J., Harris, H. C., Pier, J. R., Luginbuhl, C. B., & Ables, H. D. (1992). U.S. Naval Observatory CCD parallaxes of faint stars. I - Program description and first results. The Astronomical Journal. https://doi.org/10.1086/116091
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