Where stars form: inside-out growth and coherent star formation from
... JF125W /HF140W /HF160W selected photometric catalogs (see Skelton et al. 2014). These photometric catalogs form the scaffolding of this project upon which all the remaining data products rest. For this study, we rely on the rest-frame colors, stellar masses, and star formation rates. All of these qu ...
... JF125W /HF140W /HF160W selected photometric catalogs (see Skelton et al. 2014). These photometric catalogs form the scaffolding of this project upon which all the remaining data products rest. For this study, we rely on the rest-frame colors, stellar masses, and star formation rates. All of these qu ...
GRB – The Afterglow
... sun into a sphere just 17 miles across and generated a magnetic field about a trillion times stronger than the sun's. In 15 milliseconds, the two neutron stars crashed, merged and transformed into a rapidly spinning black hole weighing 2.9 suns. The edge of the black hole, known as its event horizon ...
... sun into a sphere just 17 miles across and generated a magnetic field about a trillion times stronger than the sun's. In 15 milliseconds, the two neutron stars crashed, merged and transformed into a rapidly spinning black hole weighing 2.9 suns. The edge of the black hole, known as its event horizon ...
Origin and Evolution of Neutron Star Magnetic Fields - if
... in terms of X-ray spectra, burst frequency, and timing stability, but it is not clear whether there is a dichotomy or just a continuum of properties, with “transition objects” connecting those which are more characteristic of each class. All measured periods lie in the narrow range 5 − 12 s, and obj ...
... in terms of X-ray spectra, burst frequency, and timing stability, but it is not clear whether there is a dichotomy or just a continuum of properties, with “transition objects” connecting those which are more characteristic of each class. All measured periods lie in the narrow range 5 − 12 s, and obj ...
Chapter 10
... 5. List and describe the different kinds of interstellar nebulae and describe the causes of their various colors. 6. List and briefly describe the components of the interstellar medium. 7. What is meant by the “pressure-temperature” thermostat, and how does it work? 8. Describe and explain the ten ...
... 5. List and describe the different kinds of interstellar nebulae and describe the causes of their various colors. 6. List and briefly describe the components of the interstellar medium. 7. What is meant by the “pressure-temperature” thermostat, and how does it work? 8. Describe and explain the ten ...
Observing the Clustering of Matter and Galaxies
... Galaxies with little star-formation (~ “early types”) are much more strongly clustered on small scales A.k.a. morphology-density relation Presumably: dense environments lead to rapid/early completion of the main star-formation ...
... Galaxies with little star-formation (~ “early types”) are much more strongly clustered on small scales A.k.a. morphology-density relation Presumably: dense environments lead to rapid/early completion of the main star-formation ...
The title of my PDF
... up each successive isotope. This picture holds true for most of the r-process; however, as the gas expands and cools, the photo-dissociation rates fall off very quickly with temperature. The neutron-capture rates, on the other hand, do not have as strong a temperature dependence and are mainly a fun ...
... up each successive isotope. This picture holds true for most of the r-process; however, as the gas expands and cools, the photo-dissociation rates fall off very quickly with temperature. The neutron-capture rates, on the other hand, do not have as strong a temperature dependence and are mainly a fun ...
Scientific Justification
... are large clusters and our targets are spread over > 3 degrees within each region, we are requesting all observations as fixed single targets. IRAC Observations - We request a total of 1.13 hours for IRAC photometry observations of Upper Sco targets. Objects in Taurus are scheduled to be observed as ...
... are large clusters and our targets are spread over > 3 degrees within each region, we are requesting all observations as fixed single targets. IRAC Observations - We request a total of 1.13 hours for IRAC photometry observations of Upper Sco targets. Objects in Taurus are scheduled to be observed as ...
Protoplanetary Discs
... ⇒ First full explanation of the formation of the Sun & Planets The solution: Disc solves the angular momentum problem! ...
... ⇒ First full explanation of the formation of the Sun & Planets The solution: Disc solves the angular momentum problem! ...
Variations in Integrated Galactic Initial Mass Functions due to
... 2006, the latter WK06 from now on) pointed out that the distribution of initial stellar masses in a galaxy may significantly deviate from the initial mass function (IMF) the stars have when they are born, if the vast majority of stars is born in clusters. These clusters follow a power-law mass funct ...
... 2006, the latter WK06 from now on) pointed out that the distribution of initial stellar masses in a galaxy may significantly deviate from the initial mass function (IMF) the stars have when they are born, if the vast majority of stars is born in clusters. These clusters follow a power-law mass funct ...
UvA-DARE (Digital Academic Repository)
... ever, as grains grow larger, the relative velocities keep increasing, until they reach a size where the impact velocities are so high that collisions become destructive. This is called the fragmentation barrier and provides an upper limit to the size grains can grow by coagulation, ranging from roug ...
... ever, as grains grow larger, the relative velocities keep increasing, until they reach a size where the impact velocities are so high that collisions become destructive. This is called the fragmentation barrier and provides an upper limit to the size grains can grow by coagulation, ranging from roug ...
Jul y 9- 11,
... evidence for the termination of star formation at early epochs that drives some galaxies away from the “standard” correlation of stellar bulge mass with SMBH mass, and address how future X-ray missions can explore the evolution of hot coronae and SMBHs from z 6 to the present. ...
... evidence for the termination of star formation at early epochs that drives some galaxies away from the “standard” correlation of stellar bulge mass with SMBH mass, and address how future X-ray missions can explore the evolution of hot coronae and SMBHs from z 6 to the present. ...
N-body Simulations and Galaxy Formation
... composed of two overlapping late-type spiral galaxies in an early phase of a merger. The long extended tails most likely have a tidal origin and are characteristic for gravitationally interacting spiral galaxies. The merger of the Antennae galaxies is accompanied by several bursts of star formation ...
... composed of two overlapping late-type spiral galaxies in an early phase of a merger. The long extended tails most likely have a tidal origin and are characteristic for gravitationally interacting spiral galaxies. The merger of the Antennae galaxies is accompanied by several bursts of star formation ...
WASP-35b, WASP-48b, AND HAT-P-30b/WASP
... Most of the known transiting exoplanets orbit very close to their host star, which produces strong tidal forces between them. The tidal interactions may result in orbital circularization, synchronization, and decay (Pont 2009). An apparent relationship between period and eccentricity of non-transiti ...
... Most of the known transiting exoplanets orbit very close to their host star, which produces strong tidal forces between them. The tidal interactions may result in orbital circularization, synchronization, and decay (Pont 2009). An apparent relationship between period and eccentricity of non-transiti ...
Annual Report 2014 - Max Planck Institute for Astrophysics
... The library is a shared facility of the MPA and to a couple of weeks, and as result such communal the MPE and therefore has to serve the needs space can be helpful for them to prepare food and of two institutes with differing research emphases to meet each other. – predominantly theoretical astrophys ...
... The library is a shared facility of the MPA and to a couple of weeks, and as result such communal the MPE and therefore has to serve the needs space can be helpful for them to prepare food and of two institutes with differing research emphases to meet each other. – predominantly theoretical astrophys ...
Giant Planet Atmospheres and Spectra
... However, some EGPs, the close-in and transiting variants, are so near their central stars that their surface and atmospheric temperatures can be quite large (∼1000-2500 K). Hot planets (due to either proximity or youth) can be self-luminous in the near infrared (and even in the optical). As a result ...
... However, some EGPs, the close-in and transiting variants, are so near their central stars that their surface and atmospheric temperatures can be quite large (∼1000-2500 K). Hot planets (due to either proximity or youth) can be self-luminous in the near infrared (and even in the optical). As a result ...
ppt
... APEX S-Z observations of the XMM-LSS field Marguerite PIERRE (CEA Saclay) Rüdiger KNEISSL (Berkeley) ...
... APEX S-Z observations of the XMM-LSS field Marguerite PIERRE (CEA Saclay) Rüdiger KNEISSL (Berkeley) ...
Properties of dust - McDonald Observatory
... samples while students measure the sizes of the particles — the slightest breath will scatter the particles. 3. Measure the sizes of the particles. Using the clear plastic metric ruler and magnifying glass at 4×, students can see particles down to 100 micrometers (0.1 mm), but the limit of their mea ...
... samples while students measure the sizes of the particles — the slightest breath will scatter the particles. 3. Measure the sizes of the particles. Using the clear plastic metric ruler and magnifying glass at 4×, students can see particles down to 100 micrometers (0.1 mm), but the limit of their mea ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.