THE HELIACAL RISE OF SIRIUS- Algorithm
... In the course of the last 5 years of observations in Seattle, in the period 2001-2005 I have seen that one and the same star does appear on the same date, provided it is brighter than +1.5 mag.. In comparison I have observed how stars around +3.0 mag. appeared, in 2005, 3 days later than they did in ...
... In the course of the last 5 years of observations in Seattle, in the period 2001-2005 I have seen that one and the same star does appear on the same date, provided it is brighter than +1.5 mag.. In comparison I have observed how stars around +3.0 mag. appeared, in 2005, 3 days later than they did in ...
Multiwavelength observations of XTE J1118+480`s outburst
... with low/hard X-ray emission => compact object is a neutron star But correlation not always verified… S. Chaty - ESO - 28/11/2006 ...
... with low/hard X-ray emission => compact object is a neutron star But correlation not always verified… S. Chaty - ESO - 28/11/2006 ...
Observations and Theory of Dynamical Triggers for Star Formation
... M16 (Hester et al. 1996), and M8 (Caulet 1997). Other similar regions have been found in the Sco-Cen association (Bertoldi & Jenkins 1992). Some of these neutral regions may be protostellar disks, as argued in the papers on Orion, but Hester et al. (1996) claims that many are evaporating globules ra ...
... M16 (Hester et al. 1996), and M8 (Caulet 1997). Other similar regions have been found in the Sco-Cen association (Bertoldi & Jenkins 1992). Some of these neutral regions may be protostellar disks, as argued in the papers on Orion, but Hester et al. (1996) claims that many are evaporating globules ra ...
Planetary Nebula
... Planetary Nebula NGC 7008 Fetus Nebula Observers have long been aware of the unique structure of planetary nebula NGC 7008. Because the central star is so prominent, the original thinking on this nebula’s formation focused around the central star itself. But the motions of the gas are also being ob ...
... Planetary Nebula NGC 7008 Fetus Nebula Observers have long been aware of the unique structure of planetary nebula NGC 7008. Because the central star is so prominent, the original thinking on this nebula’s formation focused around the central star itself. But the motions of the gas are also being ob ...
NexStar GT - Celestron
... The NexStar comes partially assembled and can be operational in a matter of minutes. The NexStar is conveniently packaged in one reusable shipping carton that contains the following accessories: NexStar 60 GT ...
... The NexStar comes partially assembled and can be operational in a matter of minutes. The NexStar is conveniently packaged in one reusable shipping carton that contains the following accessories: NexStar 60 GT ...
preprint, pdf version - LESIA
... was recorded. In February 2010, Varuna was observed to occult a V = 11.1 star from the north-east of Brazil. One chord was obtained. A solution for the size, albedo, and shape was derived after combining the positive with a near negative chord and astrometric and photometric ground-based data (Ortiz ...
... was recorded. In February 2010, Varuna was observed to occult a V = 11.1 star from the north-east of Brazil. One chord was obtained. A solution for the size, albedo, and shape was derived after combining the positive with a near negative chord and astrometric and photometric ground-based data (Ortiz ...
exoplanet observing for amateurs
... One of the benefits of experience is that there will be many mistakes and “lessons learned,” and these can lead to a philosophy for the way of doing things. One of my favorite philosophies is: KNOW THY HARDWARE! It takes time to learn the idiosyncrasies of an observing system, and no observing syste ...
... One of the benefits of experience is that there will be many mistakes and “lessons learned,” and these can lead to a philosophy for the way of doing things. One of my favorite philosophies is: KNOW THY HARDWARE! It takes time to learn the idiosyncrasies of an observing system, and no observing syste ...
Stars, Galaxies, and Beyond
... Ivezić for allowing me this opportunity to explore these many important topics in astrophysics. Sources: The materials in this summary derive from the lecture notes, the assigned textbook, and many Web and published scientific articles and other sources as noted. I do not consider Wikipedia to be a ...
... Ivezić for allowing me this opportunity to explore these many important topics in astrophysics. Sources: The materials in this summary derive from the lecture notes, the assigned textbook, and many Web and published scientific articles and other sources as noted. I do not consider Wikipedia to be a ...
Stars sensors terminology and performance
... This Standard specifies star tracker performances as part of a space project. The Standard covers all aspects of performances, including nomenclature, definitions, and performance requirements for the performance specification of star sensors. The Standard focuses on performance specifications (incl ...
... This Standard specifies star tracker performances as part of a space project. The Standard covers all aspects of performances, including nomenclature, definitions, and performance requirements for the performance specification of star sensors. The Standard focuses on performance specifications (incl ...
Quantitative constraints on starburst cycles in galaxies with stellar
... of dwarf irregular galaxies have been found to be relatively quiescent (e.g. Van Zee 2001). Recent work on low mass galaxies at high redshifts by Van der Wel et al (2011) has indicated that the space densities of extreme emission line dwarf galaxies with stellar masses ∼ 108 M⊙ are much higher at ea ...
... of dwarf irregular galaxies have been found to be relatively quiescent (e.g. Van Zee 2001). Recent work on low mass galaxies at high redshifts by Van der Wel et al (2011) has indicated that the space densities of extreme emission line dwarf galaxies with stellar masses ∼ 108 M⊙ are much higher at ea ...