2 Justification and benefits in joining TMT
... advanced adaptive optics will revolutionise many fields in astronomy. TMT will directly image and probe the atmospheres of extrasolar planets; it will provide key insights into the nature of dark matter and dark energy, and shed light on how galaxies, stars, black holes and planets form and evolve. ...
... advanced adaptive optics will revolutionise many fields in astronomy. TMT will directly image and probe the atmospheres of extrasolar planets; it will provide key insights into the nature of dark matter and dark energy, and shed light on how galaxies, stars, black holes and planets form and evolve. ...
09-03-08_Meixner
... • What is the dust composition of the evolved star population in the Milky Way and nearby galaxies? – Spectra are important constraints on the composition of the dust returned to galaxies. – FORCast spectroscopy of dust mineralogy in evolved stars, YSOs, ISM, SNRs, supernovae – EXES spectroscopy of ...
... • What is the dust composition of the evolved star population in the Milky Way and nearby galaxies? – Spectra are important constraints on the composition of the dust returned to galaxies. – FORCast spectroscopy of dust mineralogy in evolved stars, YSOs, ISM, SNRs, supernovae – EXES spectroscopy of ...
chemical compositions of rv tauri stars and related objects
... days using the calibrated P-L-C (period-luminositycolor) relation by Alcock et al. (1998) further supporting the above suggestion. The detection of IR fluxes (Jura 1986) and the high estimated luminosities (Alcock et al. 1998) support the idea that these stars are in the post-AGB phase evolving towa ...
... days using the calibrated P-L-C (period-luminositycolor) relation by Alcock et al. (1998) further supporting the above suggestion. The detection of IR fluxes (Jura 1986) and the high estimated luminosities (Alcock et al. 1998) support the idea that these stars are in the post-AGB phase evolving towa ...
Harikane
... • Galactic outflows powered by starformation activities or AGNs have been reported. + SN and AGN • Galactic outflows play a significant role in feedback galaxy formation and evolution. – Chemical enrichment of IGM – Regulating star formation Courtesy: Darren Croton ...
... • Galactic outflows powered by starformation activities or AGNs have been reported. + SN and AGN • Galactic outflows play a significant role in feedback galaxy formation and evolution. – Chemical enrichment of IGM – Regulating star formation Courtesy: Darren Croton ...
Lecture 6
... Accretion Disks Accretion disks are important in astrophysics as they efficiently transform gravitational potential energy into radiation. Accretion disks are seen around stars, but the most extreme disks are seen at the centre of quasars. These orbit black holes with masses of ~106-9 M¯, and radia ...
... Accretion Disks Accretion disks are important in astrophysics as they efficiently transform gravitational potential energy into radiation. Accretion disks are seen around stars, but the most extreme disks are seen at the centre of quasars. These orbit black holes with masses of ~106-9 M¯, and radia ...
Resources: - Real Science
... In addition, there is reason to think that part of the interior of the neutron star is liquid. This may be rotating faster than the crust. The seismic event could cause this fluid to become attached to the crust. That would make the outer crust speed up slightly. “We think the crust cracked,” Muno s ...
... In addition, there is reason to think that part of the interior of the neutron star is liquid. This may be rotating faster than the crust. The seismic event could cause this fluid to become attached to the crust. That would make the outer crust speed up slightly. “We think the crust cracked,” Muno s ...
A SIGNIFICANTLY LOW CO ABUNDANCE TOWARD THE TW Hya
... and oxygen in water. As a consequence of this likely time-dependent carbon sink mechanism, CO may be an unreliable tracer of H2 gas mass. Key words: astrochemistry – ISM: abundances – protoplanetary disks – stars: formation Online-only material: color figures ...
... and oxygen in water. As a consequence of this likely time-dependent carbon sink mechanism, CO may be an unreliable tracer of H2 gas mass. Key words: astrochemistry – ISM: abundances – protoplanetary disks – stars: formation Online-only material: color figures ...
Starspots: A Key to the Stellar Dynamo | SpringerLink
... sunspots, plages, network, etc. They further expand into the outer atmosphere and exhibit themselves as highly dynamic coronal loops. Thus, a detailed study of solar activity phenomena reveals the structure of underlying magnetic fields and provides valuable constraints for solar dynamo theory. Thes ...
... sunspots, plages, network, etc. They further expand into the outer atmosphere and exhibit themselves as highly dynamic coronal loops. Thus, a detailed study of solar activity phenomena reveals the structure of underlying magnetic fields and provides valuable constraints for solar dynamo theory. Thes ...
Science Case for the Chinese Participation of TMT
... advanced adaptive optics will revolutionise many fields in astronomy. TMT will directly image and probe the atmospheres of extrasolar planets; it will provide key insights into the nature of dark matter and dark energy, and shed light on how galaxies, stars, black holes and planets form and evolve. ...
... advanced adaptive optics will revolutionise many fields in astronomy. TMT will directly image and probe the atmospheres of extrasolar planets; it will provide key insights into the nature of dark matter and dark energy, and shed light on how galaxies, stars, black holes and planets form and evolve. ...
Compact High-Redshift Galaxies Are the Cores of the Most Massive
... from photometry and spectroscopy in Kriek et al. (2006, 2008b,a). We plot the profile of each system over the maximum radial range observed: from the scale of a single pixel at the observed redshift to the limiting surface brightness depth of the best images. Both the low and high-redshift systems a ...
... from photometry and spectroscopy in Kriek et al. (2006, 2008b,a). We plot the profile of each system over the maximum radial range observed: from the scale of a single pixel at the observed redshift to the limiting surface brightness depth of the best images. Both the low and high-redshift systems a ...
Paper (pdf)
... the neutron star rotation and magnetic field axes and constrain the mass to radius ratio. This project has been selected for technology development funding by the NASA Explorer Program. Keywords: Polarimetry, X-rays, Telescopes ...
... the neutron star rotation and magnetic field axes and constrain the mass to radius ratio. This project has been selected for technology development funding by the NASA Explorer Program. Keywords: Polarimetry, X-rays, Telescopes ...
Finding the Most Distant Quasars Using Bayesian Selection Methods
... been almost completely ionised, as the first generations of stars—and quasars—emitted sufficient ultraviolet radiation to separate electrons from protons. The rest-frame wavelength of the break is at 0.1216 µm, but the wavelength of all light is increased by the cosmological expansion; the Universe ...
... been almost completely ionised, as the first generations of stars—and quasars—emitted sufficient ultraviolet radiation to separate electrons from protons. The rest-frame wavelength of the break is at 0.1216 µm, but the wavelength of all light is increased by the cosmological expansion; the Universe ...
Further VLBA Observations of SiO Masers toward Mira
... cooler region at 3–5 R? where the (silicate) dust forms; see Reid & Menten (1997), Danchi et al. (1994). Circumstellar SiO masers tend to occur in clumpy, partial rings centered on the central star (Diamond et al. 1994). This is presumed to be due to the longer paths through constant velocity gas ne ...
... cooler region at 3–5 R? where the (silicate) dust forms; see Reid & Menten (1997), Danchi et al. (1994). Circumstellar SiO masers tend to occur in clumpy, partial rings centered on the central star (Diamond et al. 1994). This is presumed to be due to the longer paths through constant velocity gas ne ...
Core instability models of giant planet accretion – II. Forming
... In the core instability model the first step in the planetary formation is the coagulation of dust particles. When particles of many metres in size have been formed, the gravitational forces became more important than gas drag, and the larger planetesimals grow faster than the smaller ones. This sta ...
... In the core instability model the first step in the planetary formation is the coagulation of dust particles. When particles of many metres in size have been formed, the gravitational forces became more important than gas drag, and the larger planetesimals grow faster than the smaller ones. This sta ...
SPATIAL STUDY WITH THE VERY LARGE TELESCOPE OF A NEW
... axisymmetric disk models to reproduce the VLT scattered-light images and the spectral energy distribution from optical to NIR. Our best model, with a disk inclination i ¼ 86 1 , correctly reproduces the extension of the southern reflection nebula, but it is not able to reproduce either the observ ...
... axisymmetric disk models to reproduce the VLT scattered-light images and the spectral energy distribution from optical to NIR. Our best model, with a disk inclination i ¼ 86 1 , correctly reproduces the extension of the southern reflection nebula, but it is not able to reproduce either the observ ...
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.