Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Trudy Tilleman"'
Autor:
Bryce A. Babcock, L. Bright, Paul J. Tristram, Stephanie Sallum, C. J. K. Morley, William D. Vacca, Manuel Wiedemann, Stephen E. Levine, P. M. Kilmartin, S. Mathers, K. Leppik, Peter F. Nelson, Chris Johnson, Amanda S. Bosh, Carlos A. Zuluaga, Jay M. Pasachoff, Daisuke Suzuki, Molly R. Kosiarek, Rebecca F. Durst, Ho Chit Siu, Ian S. McLean, Thanawuth Thanathibodee, Trudy Tilleman, Eric E. Becklin, Amanda A. Sickafoose, Sarah E. Logsdon, C. H. Seeger, Edward W. Dunham, M. Savage, Fumio Abe, E. Pfüller, Ryan T. Hamilton, Luke Weisenbach, Tim Natusch, Hugh C. Harris, Chris Stockdale, Haydn Ngan, Elizabeth Widen, Jeffrey Van Cleve, R. Lucas, A. C. Gilmore, Carolle Varughese, Jürgen Wolf, G. W. Christie, Thomas A. Bida
On UT 29 June 2015, the occultation by Pluto of a bright star (r′ = 11.9) was observed from the Stratospheric Observatory for Infrared Astronomy (SOFIA) and several ground-based stations in New Zealand and Australia. Pre-event astrometry allowed fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::900e6238bf563d100064c1f6362e88f7
https://resolver.caltech.edu/CaltechAUTHORS:20191202-094234104
https://resolver.caltech.edu/CaltechAUTHORS:20191202-094234104
Autor:
Christopher W. Morgan, Trudy Tilleman, Vyacheslav N. Shalyapin, Luis J. Goicoechea, S. E. Dahm, Hayden R. Burger, Frederick J. Vrba, Matthew A. Cornachione
We present a microlensing analysis of updated light curves in three filters, $g$--band, $r$--band, and $H$--band, for the gravitationally lensed quasars Q0957+561 and SBS0909+532. Both systems display prominent microlensing features which we analyze
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21236d4b3f8e1bab2cfd3929c8a7ca41
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
Autor:
John P. Subasavage, Conard C. Dahn, Christian B. Luginbuhl, Harold D. Ables, Jeffrey R. Pier, Frederick J. Vrba, S. K. Leggett, Jeffrey A. Munn, Pierre Bergeron, Trudy Tilleman, Richard L. Walker, Arne H. Henden, Patrick Dufour, Ronald C. Stone, Alice K. B. Monet, Siyi Xu, Hugh C. Harris, Stephen E. Levine, Harry H. Guetter, B. Canzian, David G. Monet
This paper presents new trigonometric parallaxes and proper motions for 214 stars. The measurements were made at the US Naval Observatory Flagstaff Station (NOFS) between 1989 and 2017, and the average uncertainty in the parallax values is 0.6 mas. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ceb05ccda537ca2d890f8c31f60b828
Autor:
Brian D. Mason, Daniel J. Smith, M. Zacharias, G. Wieder, Nigel Hambly, W. I. Hartkopf, Sumit Dutta, S. Gauss, André Young, Terrence M. Girard, M. Martines, David G. Monet, D. M. Hall, D. Castillo, M. E. Germain, D. Hsu, Trudy Tilleman, T. Corbin, E. R. Holdenried, G. Wycoff, C. T. Finch, M. Divittorio, L. Winter, Valeri V. Makarov, Norbert Zacharias, Ralph A. Gaume, S. Urban, Ted Rafferty, T. Siemers, A. Rhodes
Publikováno v:
The Astronomical Journal. 139:2184-2199
The third US Naval Observatory (USNO) CCD Astrograph Catalog, UCAC3 was released at the IAU General Assembly on 2009 August 10. It is the first all-sky release in this series and contains just over 100 million objects, about 95 million of them with p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b159e705978cb01a8067bec2082222c
https://doi.org/10.1088/0004-6256/139/6/2184
https://doi.org/10.1088/0004-6256/139/6/2184
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
https://doi.org/10.3847/1538-3881/aa880b
Autor:
Emilio E. Falco, Chelsea L. MacLeod, Trudy Tilleman, Laura J. Hainline, Zachary D. Landaal, Christopher S. Kochanek, Vyacheslav N. Shalyapin, Luis J. Goicoechea, Hugh C. Harris, Christopher W. Morgan
Publikováno v:
The Astrophysical Journal, Vol. 774, Num. 1, p. 69, (2013)
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)
The Astrophysical Journal, 2013, 774(1), 69
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)
The Astrophysical Journal, 2013, 774(1), 69
We present three complete seasons and two half-seasons of SDSS r-band photometry of the gravitationally lensed quasar SBS 0909+532 from the U.S. Naval Observatory, as well as two seasons each of SDSS g-band and r-band monitoring from the Liverpool Ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1045d657d8d4d1575ad9f6c2e5a45822
http://arxiv.org/abs/1307.3254
http://arxiv.org/abs/1307.3254
Autor:
Norbert Zacharias, Stephen E. Levine, Richard L. Walker, Conard C. Dahn, Harry H. Guetter, Blaise Canzian, John P. Subasavage, David G. Monet, Trudy Tilleman, Jeffrey R. Pier, Hugh C. Harris, Kenneth J. Johnston, Alice K. B. Monet, Christian B. Luginbuhl, Ronald C. Stone
Publikováno v:
The Astronomical Journal. 152:118
Optical astrometry of 12 fields containing quasi-stellar objects (QSOs) is presented. The targets are radio sources in the International Celestial Reference Frame with accurate radio positions that also have optical counterparts. The data are used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42c407a81830081090422715d7af64a9
https://doi.org/10.3847/0004-6256/152/5/118
https://doi.org/10.3847/0004-6256/152/5/118
Autor:
Eric W. Ferguson, C. Crockett, Arne H. Henden, Trudy Tilleman, A. Rhodes, T. J. Rafferty, Jeffrey A. Munn, John P. Subasavage, G. Wieder, Greg Bredthauer, M. Divittorio, M. Schultheiss, C. Finch, Christopher M. Kilian, Frederick H. Harris, H. C. Harris, N. Zacharias
Publikováno v:
The Astronomical Journal. 150:101
URAT1 is an observational, astrometric catalog covering most of the δ −15° area and a magnitude range of about R = 3–18.5. Accurate positions (typically 10–30 mas standard error) are given for over 228 million objects at a mean epoch around 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d96666d36cc19dd1bc4ae63217f1a3d8
https://doi.org/10.1088/0004-6256/150/4/101
https://doi.org/10.1088/0004-6256/150/4/101
Autor:
Frederick J. Vrba, Alice K. B. Monet, Stephen E. Levine, Harry H. Guetter, B. Canzian, Jeffrey R. Pier, Richard L. Walker, S. K. Leggett, Hugh C. Harris, Ronald C. Stone, Conard C. Dahn, Christian B. Luginbuhl, David G. Monet, Trudy Tilleman
Trigonometric parallaxes of 16 nearby planetary nebulae are presented, including reduced errors for seven objects with previous initial results and results for six new objects. The median error in the parallax is 0.42 mas, and twelve nebulae have par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb9ef062ec2ffb0c59130c926d02bc9f
http://arxiv.org/abs/astro-ph/0611543
http://arxiv.org/abs/astro-ph/0611543