Results 91 to 100 of about 92,651 (143)

Candidate Distant Trans-Neptunian Objects Detected by the New Horizons Subaru TNO Survey

open access: yesThe Planetary Science Journal
We report the detection of 239 trans-Neptunian objects discovered through the ongoing New Horizons survey for distant minor bodies being performed with the Hyper Suprime-Cam mosaic imager on the Subaru Telescope.
Wesley C. Fraser   +43 more
doaj   +1 more source

El tratado alfonsí sobre la esfera [PDF]

open access: yes, 1982
En dos trabajos recientes (1) Richard Lorch no sólo ha dado a conocer dos nuevos tratados medievales sobre la sphaera solida sino que ha reunido además toda una serie de datos en torno a la tradición medieval de este instrumento astronómico tanto en ...
Samsó, Julio
core   +2 more sources

The Sloan Digital Sky Survey Reverberation Mapping Project: Key Results

open access: yesThe Astrophysical Journal Supplement Series
We present the final data from the Sloan Digital Sky Survey (SDSS) Reverberation Mapping (RM) project, a precursor to the SDSS-V Black Hole Mapper RM program. This data set includes 11 yr photometric and 7 yr spectroscopic light curves for 849 broad-line
Yue Shen   +46 more
doaj   +1 more source

Club astronómico del instituto [PDF]

open access: yes, 2014
El Club Astronómico del Instituto profesor Martín Miranda de La Cuesta-La Laguna, es un foro de debates, conferencias y observaciones relativos a una materia interdisciplinar: la Astronomía.
Fernández, Federico
core  

Discovery of Hα Emission from a Protoplanet Candidate around the Young Star 2MASS J16120668–3010270 with MagAO-X

open access: yesThe Astrophysical Journal Letters
2MASS J16120668–3010270 (hereafter 2MJ1612) is a young M0 star that hosts a protoplanetary disk in the Upper Scorpius star-forming region. Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of 2MJ1612 show a mildly inclined disk ( i  
Jialin Li   +34 more
doaj   +1 more source

Ezequiel Calbet i la mesura de l'eclipsi de 1842 [PDF]

open access: yes, 2009
On 8 July 1842 an eclipse of Sun was observed in Catalonia. Since this eclipse, European scientists have postulated that the protuberances that surrounded themoon formed part of the Sun.
Barca i Salom, Francesc Xavier
core   +1 more source

El comentario de Santayana y Spinosa: (1568) al Tratado de la esfera de Sacrobosco [PDF]

open access: yes, 2007
Durante el siglo XVI se hicieron en España varios comentarios y traducciones al Tratado de la esfera de Johannes de Sacrobosco (Martins, 2004).
de Andrade Martins, Roberto
core  

Observaciones topoastronómicas en la Zona Arqueológica de El Ceremeño (Herrería, Guadalajara) Topoastronomic observations in the Archaeological Site of El Ceremeño (Herrería, Guadalajara) [PDF]

open access: yes
La Zona Arqueológica de El Ceremeño constituye uno de los conjuntos más significativos de la cultura celtibérica. Entre los estudios allí realizados se han incluido rigurosas observaciones topoastronómicas, llevadas a cabo por un equipo interdisciplinar,
Cerdeño, Mª Luisa   +3 more
core   +1 more source

On the use of controlled radiation pressure to send a satellite to a graveyard orbit [PDF]

open access: yes, 2017
A very important topic in modern astrodynamics is the removal of satellites from their orbits, after the end of their missions. In this work, we propose the use of the solar radiation pressure to change the orbital energy of a satellite, to remove it ...
Prado, A. F. B. A.   +3 more
core  

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems. IV. NIRISS Aperture Masking Interferometry Performance and Lessons Learned

open access: yesThe Astrophysical Journal Letters
We present a performance analysis for the aperture masking interferometry (AMI) mode on board the James Webb Space Telescope Near Infrared Imager and Slitless Spectrograph (JWST/NIRISS).
Steph Sallum   +122 more
doaj   +1 more source

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