A5071383629- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- History and Developments in Astronomy
- Historical Astronomy and Related Studies
- Astro and Planetary Science
- Remote Sensing in Agriculture
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- Space Satellite Systems and Control
- Agricultural Economics and Policy
- Remote Sensing and Land Use
- Impact of Light on Environment and Health
- Geophysics and Gravity Measurements
- Cultural and Sociopolitical Studies
- melanin and skin pigmentation
- Atmospheric Ozone and Climate
- Soil Geostatistics and Mapping
- Nuclear Physics and Applications
- Neuroblastoma Research and Treatments
- Turkish Literature and Culture
- Multi-Agent Systems and Negotiation
- Speech and dialogue systems
- Neurofibromatosis and Schwannoma Cases
Goddard Space Flight Center
1972-1979
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We report the first discovery of a transiting circumbinary planet detected from single sector TESS data. During Sector 21, TIC 172900988b transited primary star and then 5 days later it secondary star. The binary is itself eclipsing, with period P = 19.7 an eccentricity e 0.45. Archival data ASAS-SN, Evryscope, KELT, SuperWASP reveal prominent apsidal motion orbit, caused by dynamical interactions between planet. A comprehensive photodynamical analysis TESS, archival follow-up yields stellar...
view Abstract Citations (68) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Multicolor Photoelectric Photometry of Galaxies Wood, David B. The stellar content galaxies has been investigated by means narrow-band photoelectric photometry performed in twelve colors. consists seven continuum colors from X 3400 to 7300 and five line indices, including Na D, Mg b, TiO, Ha. Observations this photometric system were made twenty various morphological...
Troubles in speaking, hearing, and understanding occur routinely any kind of conversational setting. The natural flow conversation includes methods for "repairing" such troubles by repeating or paraphrasing all parts prior turns. In the case AI systems, these due to failure different components system as speech recognition, language understanding, generation. Such errors may infrequently, but still often enough have a significant impact on key performance indicators (KPIs). Identifying root...
view Abstract Citations (23) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photoelectric Observations of Beta Lyrae. Wood, David B. ; Walker, Merle F. As part an international program, Lyrae was observed over interval 22 days during the summer 1958, covering two successive cycles system. Light- and color-curves on U, B, V system are presented. The primary eclipse found to be slightly asymmetric, width changed between eclipses. One comparison...
view Abstract Citations (25) References (8) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Magnesium Hydride in Cool Stars and Galaxies. Spinrad, Hyron ; Wood, David B. As noted by three decades ago more recently Tull the (0,0) (1,0) bands of MgH green spectra K stars reach considerable strength. The X 5200 band is strongest lateK dwarfs; it a rather sensitive luminosity discriminant for spectral types K2-M2. quite strong some K-nuclei galaxies. Like D-lines...
The absolute elements of the close eclipsing system RU Ursae Minoris have been determined, using only photometric data. calculation is based on an binary computer model and following assumptions: 1. Relationship between stellar mass distortion as determined by Chandrasekhar. 2. Applicability Stefan Planck laws. 3. main-sequence mass-luminosity law to primary star. Both stars are apparently oversize for their masses temperatures. FO dwarf star fills its Roche limiting surface. secondary...
A highly accurate reflection model has been developed which emphasizes efficiency of computer calculation. It is assumed that the heating irradiated star must depend upon following properties irradiating star: (1) effective temperature; (2) apparent area as seen from a point on surface star; (3) limb darkening; and (4) zenith distance centre star. The algorithm eliminates need to integrate over while providing representation integrated bolometric flux, even for gravitationally distorted stars.
A wide-baseline color system designed primarily for studying galaxy synthesis is described, which utilizes seven filters placed in continuum regions, and five on certain absorption features. Observations of 93 standard stars later than B7, all luniinosity classes are presented the relationship observations with temperature, luminosity, metal abundance investigated. index based upon Mgb MgH features near 5175 particularly useful luminosity resolution spectral type G5 later. It also strongly...
The F-type eclipsing binary CD Tauri was analyzed using Stromgren intermediate-band uvby photometric data. results, combined with earlier spectroscopic allow calculation of absolute system dimensions. two nearly identical components apparently lie slightly above the main sequence. astrophysical properties are similar to Procyon and other twins such as Xi Sco, Psi Vel, HS Hya. Although there is little evidence mass exchange or interactions, period this subject random fluctuations.
Search Bar to Enter New Query quick field: Author First Abstract Year Fulltext Select a field or operator abstract only acknowledgements affiliation arXiv category author count bibcode bibliographic group bib abbrev, e.g. ApJ body of article data archive collection citation doctype doi entdate first fulltext identifier inst keyword object orcid page property publication full name date published title volume year citations() pos() references() reviews() similar() topn() trending() useful()...
view Abstract Citations References (3) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Light-Variation of +74°493. Lynds, C. R. ; Peregrine, D. S. Wood, B. The high-velocity spectroscopic binary + has been observed photoelectrically for eclipses. Although no eclipses were found, the brightness system was seen to vary. There is evidence that components are subdwarfs. Publication: Astrophysical Journal Pub Date: November 1957 DOI: 10.1086/146425 Bibcode:...
Search Bar to Enter New Query quick field: Author First Abstract Year Fulltext Select a field or operator abstract only acknowledgements affiliation arXiv category author count bibcode bibliographic group bib abbrev, e.g. ApJ body of article data archive collection citation doctype doi entdate first fulltext identifier inst keyword object orcid page property publication full name date published title volume year citations() pos() references() reviews() similar() topn() trending() useful()...
view Abstract Citations (3) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The color of Beta Lyrae in 1958. Wood, D. B. A redetermination the photometric calibration used reduction 1958 Lick Observatory observations P Lyr leads to a B - Vcolor which is about 0.04 mag redder than originally published. V thus, within uncertainties transformation, same as 1959. Subject headings: eclipsing binaries stars, individual Publication: Astrophysical Journal...