Zobrazeno 1 - 10 of 46 pro vyhledávání: '"Ronald C. Stone"'
1
Distances of Dwarf Carbon Stars
Autor: Jeffrey A. Munn, Hugh C. Harris, Stephen E. Levine, William I. Hartkopf, Ronald C. Stone, Jeffrey R. Pier, John P. Subasavage, B. Canzian, Alice K. B. Monet, Trudy Tilleman, Conard C. Dahn
Parallaxes are presented for a sample of 20 nearby dwarf carbon stars. The inferred luminosities cover almost two orders of magnitude. Their absolute magnitudes and tangential velocities confirm prior expectations that some originate in the Galactic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d871792087817fef41bd51ebd6f960d7
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3
Upgrades to the Flagstaff Astrometric Scanning Transit Telescope: A Fully Automated Telescope for Astrometry
Autor: Alice K. B. Monet, Harold D. Ables, Harry H. Guetter, Conard C. Dahn, Blaise Canzian, Ronald C. Stone, Stephen E. Levine, Frederick H. Harris, Hugh C. Harris, Christian B. Luginbuhl, Jeffrey A. Munn, Frederick J. Vrba, David G. Monet, Richard L. Walker, Jeffrey R. Pier, Arne Henden
Publikováno v: The Astronomical Journal. 126:2060-2080
The Flagstaff Astrometric Scanning Transit Telescope (FASTT) is a fully automated telescope that takes about 41,000 CCD frames of data a year for various research projects. All aspects of the telescope's operation have been automated (e.g., target se
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fac1ca211362d55dbec4452894a5c18b
https://doi.org/10.1086/377622
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4
Meeting the Cool Neighbors. IV. 2MASS 1835+32, a Newly Discovered M8.5 Dwarf within 6 Parsecs of the Sun
Autor: Harry H. Guetter, Blaise Canzian, Christian B. Luginbuhl, Conard C. Dahn, I. Neill Reid, Alice K. B. Monet, Stephen E. Levine, David G. Monet, Kelle L. Cruz, Hugh C. Harris, Stephen P. Laurie, Ronald C. Stone, James Liebert
Publikováno v: The Astronomical Journal. 125:354-358
We present observations of 2MASSI J1835379+325954, a previously unrecognized late-type M dwarf within 6 pc of the Sun. Identified based analysis of the Two Micron All Sky Survey optical spectroscopy and photometry indicate a spectral type of M8.5. Th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f36940911578a2013f79eb32f71b5c9
https://doi.org/10.1086/344946
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5
Parallaxes of Brown Dwarfs at USNO
Autor: Conard C. Dahn, Frederick J. Vrba, Harry H. Guetter, Blaise Canzian, Christian B. Luginbuhl, Arne Henden, Richard L. Walker, David G. Monet, Hugh C. Harris, Jeffery R. Pier, Alice K. B. Monet, Ronald C. Stone, Stephen E. Levine
Publikováno v: Symposium - International Astronomical Union. 211:409-412
Trigonometric parallaxes have been measured by Dahn et al. (2002) for 28 cool dwarfs and brown dwarfs, including 17 L dwarfs and three T dwarfs. Broadband CCD and near-IR photometry (VRIz*JHK) have been obtained for these objects and for 24 additiona
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3fe1c41e85f71937ef3b76d4c5fc850
https://doi.org/10.1017/s0074180900211017
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6
A New Method for Computing Differential Color Refraction
Autor: Ronald C. Stone
Publikováno v: Publications of the Astronomical Society of the Pacific. 114:1070-1086
A new method for computing differential color refraction (DCR) is presented in this paper that uses observations taken through a conventional filter as well as through a narrowband interference filter that serves as a template for the reductions. The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1188f505cb23cacd67c41895f2a47424
https://doi.org/10.1086/342676
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7
CCD Parallaxes for 309 Late-type Dwarfs and Subdwarfs
Autor: Jeffrey R. Pier, Stephen E. Levine, Trudy Tilleman, Harry H. Guetter, Alice K. B. Monet, Frederick J. Vrba, John P. Subasavage, Richard L. Walker, B. Canzian, Ronald C. Stone, David G. Monet, Fred H. Harris, Jeffrey A. Munn, Arne H. Henden, Hugh C. Harris, Harold D. Ables, S. K. Leggett, Christian B. Luginbuhl, Conard C. Dahn
Publikováno v: The Astronomical Journal. 154:147
New, updated, and/or revised CCD parallaxes determined with the Strand Astrometric Reflector at the Naval Observatory Flagstaff Station (NOFS) are presented. Included are results for 309 late-type dwarf and subdwarf stars observed over the 30+ years
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78ac17690f87cb64e3d87375487cd20c
https://doi.org/10.3847/1538-3881/aa880b
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9
Accurate FASTT Positions and Magnitudes of Asteroids: 1997–1999 Observations
Autor: Ronald C. Stone
Publikováno v: The Astronomical Journal. 120:2708-2720
This paper presents 56,256 positions of 1940 asteroids determined in 1997–1999. The CCD observations were taken with the Flagstaff Astrometric Scanning Transit Telescope (FASTT) and were reduced differentially to ICRF equatorial positions using ref
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c826452a31a2dbd0483965eabaddbdf
https://doi.org/10.1086/316813
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10
Positions for the Outer Planets and Many of their Satellites. IV. FASTT Observations Taken in 1999–2000
Autor: Ronald C. Stone
Publikováno v: The Astronomical Journal. 120:2124-2130
This paper presents 1201 new equatorial positions taken in 1999–2000 for the outer planets Uranus, Neptune, and Pluto, as well as for 17 satellites of Jupiter–Neptune. Additional positions for Jupiter, Saturn, Uranus, and Neptune can be derived f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e21af3ac12f1b777a66028dea23edf9f
https://doi.org/10.1086/301577
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