white_paper.word - Space Telescope Science Institute
... The Hubble Space Telescope provides a unique enabling platform for near-infrared astronomy, which has been exploited by NICMOS, opening avenues for scientific investigations with high efficiency that remain unmatched by ground-based facilities in many observational domains. Today’s large (10 meter c ...
... The Hubble Space Telescope provides a unique enabling platform for near-infrared astronomy, which has been exploited by NICMOS, opening avenues for scientific investigations with high efficiency that remain unmatched by ground-based facilities in many observational domains. Today’s large (10 meter c ...
EXPERIMENTS USING A HELIUM-NEON LASER
... This 30x20x0.2cm steel platform provides a work surface that holds the magnetic component holders securely. A center hole in the platform allows it to be bolted to a 60155 Blank Carrier (not included) if the user decides to mount the platform on the IFO triangular optics bench system. No. 45-648 ...
... This 30x20x0.2cm steel platform provides a work surface that holds the magnetic component holders securely. A center hole in the platform allows it to be bolted to a 60155 Blank Carrier (not included) if the user decides to mount the platform on the IFO triangular optics bench system. No. 45-648 ...
Galaxies in the Universe: An Introduction, Second Edition
... readers should find themselves prepared to tackle standard graduate texts such as Binney and Tremaine’s Galactic Dynamics, and review articles such as those in the Annual Reviews of Astronomy and Astrophysics. Astronomy is not an experimental science like physics; it is a natural science like geology ...
... readers should find themselves prepared to tackle standard graduate texts such as Binney and Tremaine’s Galactic Dynamics, and review articles such as those in the Annual Reviews of Astronomy and Astrophysics. Astronomy is not an experimental science like physics; it is a natural science like geology ...
MOLECULAR OUTFLOWS AND A MID
... GLIMPSE image of the G34.4 environment in Galactic coordinates (north points to the top left corner). The ‘‘cometary’’ UC H ii region G34.26+0.15 is located on the right side of the image. An IR-bright nebula extends below the G34.26 UC H ii region. The UC H ii region contains a cluster of OB stars, ...
... GLIMPSE image of the G34.4 environment in Galactic coordinates (north points to the top left corner). The ‘‘cometary’’ UC H ii region G34.26+0.15 is located on the right side of the image. An IR-bright nebula extends below the G34.26 UC H ii region. The UC H ii region contains a cluster of OB stars, ...
Star clusters in M 33 - IV. A new survey from deep HST images
... integrated magnitudes and colors. Dereddened colors were compared to stellar evolutionary models to estimate age and metallicity for the cluster sample. We found that M 33 clusters formed continuously with ages between 4 million years and 15 Gyrs. Clusters have masses in the range from several × 102 ...
... integrated magnitudes and colors. Dereddened colors were compared to stellar evolutionary models to estimate age and metallicity for the cluster sample. We found that M 33 clusters formed continuously with ages between 4 million years and 15 Gyrs. Clusters have masses in the range from several × 102 ...
Light Pollution and Astronomy
... our environment we have shared with all cultures in all periods of human history.”1 Five thousand years ago the Sumerians and Egyptians had already established a tracery of symbols, creatures and gods in the sky that were to develop into the eighty–eight mapped constellations of the modern night sky ...
... our environment we have shared with all cultures in all periods of human history.”1 Five thousand years ago the Sumerians and Egyptians had already established a tracery of symbols, creatures and gods in the sky that were to develop into the eighty–eight mapped constellations of the modern night sky ...
Uncovering the nucleus candidate for NGC 253
... 253, including the neighborhood of the former nucleus candidate TH2 and the object of study of the present work, the SSC coincident with the near-infrared (NIR) and mid-infrared (MIR) emission peak (Kornei & McCrady 2009). For this purpose, we have performed observations with the new instrumental f ...
... 253, including the neighborhood of the former nucleus candidate TH2 and the object of study of the present work, the SSC coincident with the near-infrared (NIR) and mid-infrared (MIR) emission peak (Kornei & McCrady 2009). For this purpose, we have performed observations with the new instrumental f ...
the au microscopii debris disk: multiwavelength imaging and modeling
... sitive measurements of the 850 m flux confirmed the presence of cold dust around the star (Liu et al. 2004). The Spitzer Space Telescope has further constrained the thermal emission of the dust in the mid-IR (Chen et al. 2005). Results of these studies have been taken as indirect evidence for the p ...
... sitive measurements of the 850 m flux confirmed the presence of cold dust around the star (Liu et al. 2004). The Spitzer Space Telescope has further constrained the thermal emission of the dust in the mid-IR (Chen et al. 2005). Results of these studies have been taken as indirect evidence for the p ...
Some Constraints on the Effects of Age and Metallicity - UvA-DARE
... NGC 4365 and NGC 3115. Using published age and metallicity constraints from optical and IR observations of their GCs, we do not find any evidence for an increase in the LMXB formation rate in the intermediate-age cluster population of NGC 4365, as has been proposed in some scenarios of dynamical LMX ...
... NGC 4365 and NGC 3115. Using published age and metallicity constraints from optical and IR observations of their GCs, we do not find any evidence for an increase in the LMXB formation rate in the intermediate-age cluster population of NGC 4365, as has been proposed in some scenarios of dynamical LMX ...
Modeling Spatially and Spectrally Resolved Observations to
... estimates; and 3) I present results from Hubble Space Telescope imaging of elliptical galaxies in galaxy clusters at 1 < z < 2, the precursors of present-day massive clusters with M ∼ 1015 M , demonstrating that their stars formed over an extended period and ruling out the simplest model for their ...
... estimates; and 3) I present results from Hubble Space Telescope imaging of elliptical galaxies in galaxy clusters at 1 < z < 2, the precursors of present-day massive clusters with M ∼ 1015 M , demonstrating that their stars formed over an extended period and ruling out the simplest model for their ...
