Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Otto G. Franz"'
Autor:
Brian Skiff, Lisa Prato, Guillermo Torres, Christian A. Latham, David W. Latham, Elliott P. Horch, G. Fritz Benedict, Barbara McArthur, Lawrence H. Wasserman, Otto G. Franz, Robert P. Stefanik
We extend results first announced by Franz et al. (1998), that identified vA 351 = H346 in the Hyades as a multiple star system containing a white dwarf. With Hubble Space Telescope Fine Guidance Sensor fringe tracking and scanning, and more recent s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ca92963c08a0dbebfe99423edc5bb39
Autor:
Donald J. Hutter, Christopher Tycner, Kenneth J. Johnston, R. T. Zavala, James A. Benson, Christian A. Hummel, Jason Sanborn, Otto G. Franz
We present the first results from an ongoing survey for multiplicity among the bright stars using the Navy Precision Optical Interferometer (NPOI). We first present a summary of NPOI observations of known multiple systems, including the first detecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbba21df91f8d509631e088b4fd8a3bf
http://arxiv.org/abs/1609.05254
http://arxiv.org/abs/1609.05254
Autor:
Wei-Chun Jao, Phillip A. Cargile, L. H. Wasserman, S. B. Dieterich, Barbara McArthur, Todd J. Henry, Edmund P. Nelan, Otto G. Franz, Arthur L. Whipple, Arthur J. Bradley, G. F. Benedict
We present a Mass-Luminosity Relation (MLR) for red dwarfs spanning a range of masses from 0.62 Msun to the end of the stellar main sequence at 0.08 Msun. The relation is based on 47 stars for which dynamical masses have been determined, primarily us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e87081bfeb16e5eacb13af4307773b9
http://arxiv.org/abs/1608.04775
http://arxiv.org/abs/1608.04775
We report dynamical mass measurements for the components of the previously known double-lined spectroscopic subdwarfs G 006-026 B and C using the Fine Guidance Sensors (FGS) on the Hubble Space Telescope. To build the empirical mass-luminosity relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e07896b87e860b5d0b1e00a5b185028
Publikováno v:
The Astronomical Journal. 138:1354-1364
Magnitude differences obtained from speckle imaging are used in combination with other data in the literature to place the components of binary star systems on the H-R diagram. Isochrones are compared with the positions obtained, and a best-fit isoch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c692a69c211732e12e5df31d1573267a
https://doi.org/10.1088/0004-6256/138/5/1354
https://doi.org/10.1088/0004-6256/138/5/1354
Autor:
Richard L. Walker, Brian D. Mason, Otto G. Franz, Nancy Remage Evans, Derck Massa, Margarita Karovska
Publikováno v:
Publications of the Astronomical Society of the Pacific. 118:1545-1549
We have attempted to resolve the system containing the Cepheid V1334 Cyg (=ADS 14859) using both the Faint Object Camera (FOC) and the Fine Guidance Sensor (FGS) on the Hubble Space Telescope, and also using ground‐based speckle interferometry with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8befa71582cf326ba651f1ee0210a5b0
https://doi.org/10.1086/509791
https://doi.org/10.1086/509791
Publikováno v:
The Astronomical Journal. 132:836-852
A Fourier-based method is presented for the analysis of binary and multiple star data taken with the Hubble Space Telescope Fine Guidance Sensors (FGSs). Relative astrometry and magnitude differences are obtained as with standard FGS analysis techniq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d453cd4003f62b735986a85f99111597
https://doi.org/10.1086/505703
https://doi.org/10.1086/505703
Publikováno v:
The Astronomical Journal. 131:3008-3015
We present 549 observations of 181 primarily southern binary stars. Of these, 32 are high-quality nondetections, meaning that, if binary, the system had a separation below the diffraction limit at the time of the observation, and relative astrometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d8f3b4c972a62bb95f646fa5496224
https://doi.org/10.1086/503529
https://doi.org/10.1086/503529
Speckle Interferometry of Southern Double Stars. III. Measures from the Cesco Observatory, 1994-1996
Autor:
Carlos E. Lopez, Otto G. Franz, Terrence M. Girard, James W. Davidson, E. P. Horch, J. Gethyn Timothy, William F. van Altena
Publikováno v:
The Astronomical Journal. 131:1000-1006
Position angle and separation measures of 482 primarily southern binary stars are presented. These were obtained from speckle observations taken at the Carlos U. Cesco Observatory, El Leoncito, Argentina, using a multianode microchannel array detecto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fd19a1148c521d6804883f8b352b046
https://doi.org/10.1086/498862
https://doi.org/10.1086/498862
Publikováno v:
The Astronomical Journal. 129:1700-1705
TRANS and POS mode observations of the G4 IIa star β Scuti (HD 173764) have been made with a Hubble Space Telescope (HST) Fine Guidance Sensor (FGS3). This spectroscopic binary with a period of 833 days and an eccentricity of 0.36 offered hope of re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f841f3f5086c156d7f94d2d0213a9de1
https://doi.org/10.1086/427853
https://doi.org/10.1086/427853