PDF hosted at the Radboud Repository of the Radboud University
... Despite the importance of type Ia supernovae for stellar astrophysics, galactic evolution and cosmology, the nature of the progenitor systems giving rise to these events remains mysterious, and no direct, unambiguous detection of a type Ia supernova progenitor has been made at the time of the writin ...
... Despite the importance of type Ia supernovae for stellar astrophysics, galactic evolution and cosmology, the nature of the progenitor systems giving rise to these events remains mysterious, and no direct, unambiguous detection of a type Ia supernova progenitor has been made at the time of the writin ...
Rich
... vary from galaxy to galaxy. • Opportunity: Galex grism mode in Far-UV (FUV) used to discover the first known sample of low redshift LAE galaxies. Instead of studying LAEs at z~4, study them at z~0.3 • Goal: Analyze photometry and spectroscopy of a local z~0.3 sample of ~76 LAEs and 107 non-LAEs to : ...
... vary from galaxy to galaxy. • Opportunity: Galex grism mode in Far-UV (FUV) used to discover the first known sample of low redshift LAE galaxies. Instead of studying LAEs at z~4, study them at z~0.3 • Goal: Analyze photometry and spectroscopy of a local z~0.3 sample of ~76 LAEs and 107 non-LAEs to : ...
Stellar Intensity Interferometry: The Background John Davis Sydney Institute for Astronomy
... and Cassiopeia A, were unknown and some thought they were “radio stars”. Robert Hanbury Brown (RHB) was determined to measure them • If these sources were galaxies their angular sizes would be of the order of a minute of arc and easy to measure with a conventional interferometer but, if they were s ...
... and Cassiopeia A, were unknown and some thought they were “radio stars”. Robert Hanbury Brown (RHB) was determined to measure them • If these sources were galaxies their angular sizes would be of the order of a minute of arc and easy to measure with a conventional interferometer but, if they were s ...
Annual Report 2011 - Max Planck Institute for Astrophysics
... PCs are not personalized, hardware failures are quickly repaired by a complete exchange of the computer. In addition to the desktop systems, which, are almost all younger than 5 years and which (in 2011) amount to more than 160 fully equipped working places, users have access to central number crunc ...
... PCs are not personalized, hardware failures are quickly repaired by a complete exchange of the computer. In addition to the desktop systems, which, are almost all younger than 5 years and which (in 2011) amount to more than 160 fully equipped working places, users have access to central number crunc ...
harlow shapley - National Academy of Sciences
... respect to the center of our galaxy were accepted by the astronomical world with little or no opposition. The outline that Shapley had drawn seemed to fit really much better into our overall view of the Milky Way system than did the picture that had been given to us by earlier astronomers. Northern ...
... respect to the center of our galaxy were accepted by the astronomical world with little or no opposition. The outline that Shapley had drawn seemed to fit really much better into our overall view of the Milky Way system than did the picture that had been given to us by earlier astronomers. Northern ...
Preliminary Talk Abstract Book - MoCA
... results from a cosmological zoom-in simulation of a Milky-Way mass galaxy with efficient feedback, part of the Feedback In Realistic Environments (FIRE) project, which does form a stellar disc at low redshift. The formation of this disc is directly connected to the galaxy´s star formation history, i ...
... results from a cosmological zoom-in simulation of a Milky-Way mass galaxy with efficient feedback, part of the Feedback In Realistic Environments (FIRE) project, which does form a stellar disc at low redshift. The formation of this disc is directly connected to the galaxy´s star formation history, i ...
Chapter 24
... of the other categories just discussed. Irregulars tend to be rich in interstellar matter and young, blue stars, but they lack any regular structure, such as well-defined spiral arms or central bulges. They are divided into two subclasses: Irr I galaxies and Irr II galaxies. The Irr I galaxies often ...
... of the other categories just discussed. Irregulars tend to be rich in interstellar matter and young, blue stars, but they lack any regular structure, such as well-defined spiral arms or central bulges. They are divided into two subclasses: Irr I galaxies and Irr II galaxies. The Irr I galaxies often ...
T3-Cosmic Star Formation History
... has quantified the UV galaxy luminosity function (LF) of galaxies in the local Universe and its evolution at z 1. Ground-based observations and, subsequently, UV and IR data from GALEX and Spitzer have confirmed that star-formation activity was significantly higher in the past (Lilly et al. 1996, Le ...
... has quantified the UV galaxy luminosity function (LF) of galaxies in the local Universe and its evolution at z 1. Ground-based observations and, subsequently, UV and IR data from GALEX and Spitzer have confirmed that star-formation activity was significantly higher in the past (Lilly et al. 1996, Le ...
GRB prompt emission
... Allowed Astronomers To watch the bursts Fade, and then Study their Host Galaxy! ...
... Allowed Astronomers To watch the bursts Fade, and then Study their Host Galaxy! ...
GRB prompt emission
... Allowed Astronomers To watch the bursts Fade, and then Study their Host Galaxy! ...
... Allowed Astronomers To watch the bursts Fade, and then Study their Host Galaxy! ...
The Project Gutenberg eBook #32000: An
... was written, the details of the attempt to accomplish them have undergone many, and in some cases important, modifications. For example, the work on reference points and lines has been deferred to Chapter iv. If one is to know the sky, and not simply know about it, a knowledge of the coördinate syst ...
... was written, the details of the attempt to accomplish them have undergone many, and in some cases important, modifications. For example, the work on reference points and lines has been deferred to Chapter iv. If one is to know the sky, and not simply know about it, a knowledge of the coördinate syst ...
Lichtenknecker- Database of the BAV
... The criteria for an inclusion of eclipsing binaries into the database are a magnitude not fainter than 13mag during maximum light and a declination north of –20 degree. There is no limit regarding the amplitude of the change of light or period. Due to the increasing use of CCD-cameras in the recent ...
... The criteria for an inclusion of eclipsing binaries into the database are a magnitude not fainter than 13mag during maximum light and a declination north of –20 degree. There is no limit regarding the amplitude of the change of light or period. Due to the increasing use of CCD-cameras in the recent ...
Abstract The Star Formation History of Low Surface Brightness Galaxies
... galaxies whose star formation has finished. Other scenarios span a broad range: a young mean age, less dust, a lower metallicity, perhaps even a variable IMF. Distinguishing between these scenarios requires sufficient information to build stellar population synthesis models which, if not unique, at ...
... galaxies whose star formation has finished. Other scenarios span a broad range: a young mean age, less dust, a lower metallicity, perhaps even a variable IMF. Distinguishing between these scenarios requires sufficient information to build stellar population synthesis models which, if not unique, at ...
IRAM Annual Report 2011
... and redshift (z=5.2429). The dominant lens is a foreground z=0.63 galaxy, not the cluster itself. The source has a far-infrared (FIR) luminosity of LFIR= 1.1 1014μ L⊙, where μ~11 is the magnification factor. Combes reported the redshift identification through CO lines with the IRAM 30m telescope, an ...
... and redshift (z=5.2429). The dominant lens is a foreground z=0.63 galaxy, not the cluster itself. The source has a far-infrared (FIR) luminosity of LFIR= 1.1 1014μ L⊙, where μ~11 is the magnification factor. Combes reported the redshift identification through CO lines with the IRAM 30m telescope, an ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.