The XMM-Newton Bright Serendipitous Survey
... than ∼20.5. All but 6 of the remaining sources have been optically identified either through dedicated photometry or using the SDSS catalogue. The red magnitudes of these sources are relatively bright (R between 20.5 and 22.5) with one exception: an R=24.5 object (XBSJ021642.3-043553), that turned o ...
... than ∼20.5. All but 6 of the remaining sources have been optically identified either through dedicated photometry or using the SDSS catalogue. The red magnitudes of these sources are relatively bright (R between 20.5 and 22.5) with one exception: an R=24.5 object (XBSJ021642.3-043553), that turned o ...
Molecular Gas in the Large Magellanic Cloud
... They brought me up to believe that learning is its own reward, and have been living with the consequences ever since. It is too easy to take the constant things in one’s life for granted, but I am profoundly grateful for their love and support, and appreciative that I never once heard them say the w ...
... They brought me up to believe that learning is its own reward, and have been living with the consequences ever since. It is too easy to take the constant things in one’s life for granted, but I am profoundly grateful for their love and support, and appreciative that I never once heard them say the w ...
IAA Annual Report 2014
... exploration of extrasolar planets. During this year, IAA was active working on the instrumentation of several other ESA space missions (e.g. NOMAD onboard EXO-Mars TGO and, GALA and Janus onboard JUICE). IMAX, onboard the SUNRISE mission –a telescope that observed the Sun from a stratospheric balloo ...
... exploration of extrasolar planets. During this year, IAA was active working on the instrumentation of several other ESA space missions (e.g. NOMAD onboard EXO-Mars TGO and, GALA and Janus onboard JUICE). IMAX, onboard the SUNRISE mission –a telescope that observed the Sun from a stratospheric balloo ...
harlow shapley - National Academy of Sciences
... arrived he found that there was no journalism school as yet. As he intimates in his autobiography, it was almost by accident that he selected astronomy as his special field of study. He was very fortunate at the University of Missouri to find some firstrate teachers, some of whom became quite famous ...
... arrived he found that there was no journalism school as yet. As he intimates in his autobiography, it was almost by accident that he selected astronomy as his special field of study. He was very fortunate at the University of Missouri to find some firstrate teachers, some of whom became quite famous ...
The Day We Found the Universe
... clouds were being sighted in the heavens; these faint celestial objects were lurking wherever a telescope gazed away from the Milky Way into deep space. Were these spiral nebulae close to us or were they farther o ? No one knew, because at the turn of the twentieth century astronomers didn't yet hav ...
... clouds were being sighted in the heavens; these faint celestial objects were lurking wherever a telescope gazed away from the Milky Way into deep space. Were these spiral nebulae close to us or were they farther o ? No one knew, because at the turn of the twentieth century astronomers didn't yet hav ...
High-mass star-forming cloud G0.38+0.04 in the Galactic center dust
... Sgr B2 (M): there is only one SiO maser spot in Sgr B2, located near Mehringer et al. (1994) H2 CO Source C (not to be confused with Cloud C, the topic of this paper). The Sgr B2 H2 CO maser C is peculiar even among the Sgr B2 masers in that the emission appears to be spatially and spectrally resolv ...
... Sgr B2 (M): there is only one SiO maser spot in Sgr B2, located near Mehringer et al. (1994) H2 CO Source C (not to be confused with Cloud C, the topic of this paper). The Sgr B2 H2 CO maser C is peculiar even among the Sgr B2 masers in that the emission appears to be spatially and spectrally resolv ...
A Universal Stellar Initial Mass Function? A Critical Look Further
... Way! Elmegreen & Scalo (2006) provide a detailed exploration of the degeneracies involved in inferring a stellar population’s IMF from its measured PDMF and adopted SFH. It is somewhat disconcerting that the break from the Salpeter law identified in many IMF studies needs to be invoked near the plac ...
... Way! Elmegreen & Scalo (2006) provide a detailed exploration of the degeneracies involved in inferring a stellar population’s IMF from its measured PDMF and adopted SFH. It is somewhat disconcerting that the break from the Salpeter law identified in many IMF studies needs to be invoked near the plac ...
FY96
... motions with distances out to 8 kiloparsecs from the plane. They found that the stars tend to be concentrated in groups with common space velocities and metallicities. One of the most distinct groups is metal-poor, and is moving toward the Galactic plane with a mean velocity of 56 km/s. That result ...
... motions with distances out to 8 kiloparsecs from the plane. They found that the stars tend to be concentrated in groups with common space velocities and metallicities. One of the most distinct groups is metal-poor, and is moving toward the Galactic plane with a mean velocity of 56 km/s. That result ...
Gaia 1 and 2. A pair of new satellites of the Galaxy
... Accepted XXX. Received YYY; in original form ZZZ ...
... Accepted XXX. Received YYY; in original form ZZZ ...
Strongly suggested reading: The Milky Way`s stellar disk
... coupled with the stars’ photospheric element abundances and constraints on their ages. We know that in principle this enormous wealth of information about the stellar body of our Galaxy holds a key to recognizing and understanding some of the mechanisms that create and evolve disk galaxies. And it h ...
... coupled with the stars’ photospheric element abundances and constraints on their ages. We know that in principle this enormous wealth of information about the stellar body of our Galaxy holds a key to recognizing and understanding some of the mechanisms that create and evolve disk galaxies. And it h ...
Luminosity profiles and sizes of massive star clusters in NGC 7252
... Cluster profiles and sizes in NGC 7252 Observations of young cluster systems have shown that the clusters themselves are often grouped into larger structures, cluster complexes, with radii of tens to hundreds of parsecs (e.g. Zhang, Fall & Whitmore 2001; Larsen 2004). These complexes often appear t ...
... Cluster profiles and sizes in NGC 7252 Observations of young cluster systems have shown that the clusters themselves are often grouped into larger structures, cluster complexes, with radii of tens to hundreds of parsecs (e.g. Zhang, Fall & Whitmore 2001; Larsen 2004). These complexes often appear t ...
N-Body/SPH simulations of induced star formation in dwarf galaxies
... increased and will attract other clumps. These clumps will start moving, attracting one another, and merge. When the formed structures of dark matter and baryons contain a sufficient amount of baryonic gas, they can start forming stars and dwarf galaxies are born. Large galaxies as for instance our ...
... increased and will attract other clumps. These clumps will start moving, attracting one another, and merge. When the formed structures of dark matter and baryons contain a sufficient amount of baryonic gas, they can start forming stars and dwarf galaxies are born. Large galaxies as for instance our ...
- National Optical Astronomy Observatory
... line center. Finally, see if you can look up the dissociation temperature of that molecule. The spectroheliogram conclusively maps where in the sunspot the temperature is below that dissociation temperature! Scale Calibrations: Parameter Input Menus for Data Taking ! Measure the linear distance the ...
... line center. Finally, see if you can look up the dissociation temperature of that molecule. The spectroheliogram conclusively maps where in the sunspot the temperature is below that dissociation temperature! Scale Calibrations: Parameter Input Menus for Data Taking ! Measure the linear distance the ...
Type Ia supernovae as stellar endpoints and cosmological tools
... humans for at least 950 years, but probably far longer. They amazed and confounded the likes of Tycho, Kepler and Galileo, to name a few. But it was not until the separation of these events into novae and supernovae by Baade and Zwicky that progress understanding them began in earnest1. This process ...
... humans for at least 950 years, but probably far longer. They amazed and confounded the likes of Tycho, Kepler and Galileo, to name a few. But it was not until the separation of these events into novae and supernovae by Baade and Zwicky that progress understanding them began in earnest1. This process ...
1 Globular Cluster Systems - McMaster Physics and Astronomy
... Sun in the outer halo of the Milky Way. The picture shown is an I band image taken with the Canada-France-Hawaii Telescope (see Harris et al. 1997c). The eld size is 4.6 arcmin (or 33 parsecs) across and the image resolution (\seeing") is 0.5 arcsec. Right panel: A globular cluster in the halo of t ...
... Sun in the outer halo of the Milky Way. The picture shown is an I band image taken with the Canada-France-Hawaii Telescope (see Harris et al. 1997c). The eld size is 4.6 arcmin (or 33 parsecs) across and the image resolution (\seeing") is 0.5 arcsec. Right panel: A globular cluster in the halo of t ...
W.M. Keck Observatory Annual Report 2009
... of these worlds identified within the last fifteen years, modern astronomers continue their hunt for the planets with the lowest possible mass. The Keck I telescope has been the most prolific scientific instrument in the world for finding exoplanets, the majority of them being gas giants, like Jupit ...
... of these worlds identified within the last fifteen years, modern astronomers continue their hunt for the planets with the lowest possible mass. The Keck I telescope has been the most prolific scientific instrument in the world for finding exoplanets, the majority of them being gas giants, like Jupit ...
Formation of Molecular Clouds and Global Conditions for Star
... molecular gas as traced by CO emission and only very weakly, if at all, related to atomic gas. The strong correlation with H2 persists even in regions where atomic gas dominates the mass budget (Schruba et al. 2011; Bolatto et al. 2011). The precise form of the SFR–H2 correlation is a subject of stu ...
... molecular gas as traced by CO emission and only very weakly, if at all, related to atomic gas. The strong correlation with H2 persists even in regions where atomic gas dominates the mass budget (Schruba et al. 2011; Bolatto et al. 2011). The precise form of the SFR–H2 correlation is a subject of stu ...
Revising the census of low luminosity AGN
... ONLY A FEW PERCENT! MOST OF THEM HAVE LOW EW AND ARE UNLIKELY TO BE AGN THE LINE EMISSION IS PRODUCED BY THE HOST GALAXY, NOT BY THE AGN THE LINERs REGION IS MOSTLY POPULATED BY NON-AGN THE EW IS A BEST PREDICTOR FOR GENUINE AGN THAN THE DIAGNOSTIC DIAGRAMS A LOW EW (~1 Å) IS CHARACTERISTIC OF STELL ...
... ONLY A FEW PERCENT! MOST OF THEM HAVE LOW EW AND ARE UNLIKELY TO BE AGN THE LINE EMISSION IS PRODUCED BY THE HOST GALAXY, NOT BY THE AGN THE LINERs REGION IS MOSTLY POPULATED BY NON-AGN THE EW IS A BEST PREDICTOR FOR GENUINE AGN THAN THE DIAGNOSTIC DIAGRAMS A LOW EW (~1 Å) IS CHARACTERISTIC OF STELL ...
Astrophysics for Physicists.
... the book before delving into the world of astrophysics. I personally felt that a more satisfactory approach is to teach these physics topics ‘on the way’ as we proceed with astrophysics. Since radiative transfer is used so extensively in astrophysics, it comes fairly early in Chapter 2. Two other ch ...
... the book before delving into the world of astrophysics. I personally felt that a more satisfactory approach is to teach these physics topics ‘on the way’ as we proceed with astrophysics. Since radiative transfer is used so extensively in astrophysics, it comes fairly early in Chapter 2. Two other ch ...
SherwoodWA_1973redux - Edinburgh Research Archive
... 1970; Gottesman and Davis, 1970) found that the HII regions and blue supergiants (in associations) lie within the ...
... 1970; Gottesman and Davis, 1970) found that the HII regions and blue supergiants (in associations) lie within the ...
Rich
... Lyα Emitters Motivation • Issue: Lyα emission from galaxies is likely affected by a combination of dust extinction, gas kinematics, and spatial geometry but the order of importance of each of these is unknown, and may vary from galaxy to galaxy. • Opportunity: Galex grism mode in Far-UV (FUV) used ...
... Lyα Emitters Motivation • Issue: Lyα emission from galaxies is likely affected by a combination of dust extinction, gas kinematics, and spatial geometry but the order of importance of each of these is unknown, and may vary from galaxy to galaxy. • Opportunity: Galex grism mode in Far-UV (FUV) used ...
Science with the Constellation
... destiny. Over the past decade, astronomy has been revolutionized by observing with large ground-based telescopes, such as the 10 m Keck Observatory, and by observing from space, away fro m the effects of the Earth's atmosphere. As a result, the entire electromagnetic spectrum has been opened to expl ...
... destiny. Over the past decade, astronomy has been revolutionized by observing with large ground-based telescopes, such as the 10 m Keck Observatory, and by observing from space, away fro m the effects of the Earth's atmosphere. As a result, the entire electromagnetic spectrum has been opened to expl ...
Strongly suggested reading: The stellar halo of the Galaxy
... The advent of large galaxy surveys has been extraordinarily beneficial for Galactic astronomy. Although initially conceived to be a by product, multi-color deep wide field surveys have yielded completely new views of the Galactic halo. Some of the most spectacular results come from the Sloan Digital ...
... The advent of large galaxy surveys has been extraordinarily beneficial for Galactic astronomy. Although initially conceived to be a by product, multi-color deep wide field surveys have yielded completely new views of the Galactic halo. Some of the most spectacular results come from the Sloan Digital ...
Part I: Finding High-z Galaxies - Max-Planck
... Basic Goals of High-z Galaxy Studies • As a proxy for studying the typical evolutionary fates of galaxies, one needs to study the evolution of the galaxy population (and its environs) as a function of cosmic epoch. • Need model comparison to go from observable population evolution to object evoluti ...
... Basic Goals of High-z Galaxy Studies • As a proxy for studying the typical evolutionary fates of galaxies, one needs to study the evolution of the galaxy population (and its environs) as a function of cosmic epoch. • Need model comparison to go from observable population evolution to object evoluti ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.