Neutron Stars – Cooling and Transport
... which serves as a mediator of the internal heat into the outgoing thermal radiation. It will be considered in Sect. 5. Solutions to the thermal evolution equations and their implications are briefly reviewed in Sect. 6. For weak magnetic fields, we can assume that the temperature gradients are essen ...
... which serves as a mediator of the internal heat into the outgoing thermal radiation. It will be considered in Sect. 5. Solutions to the thermal evolution equations and their implications are briefly reviewed in Sect. 6. For weak magnetic fields, we can assume that the temperature gradients are essen ...
Radial transport in the solar nebula: Implications for moderately
... processes similar to those observed or inferred to occur in other disks around young stars. Specifically, these models were used to explain the chemical and isotopic properties of solar system materials as the result of their dynamical evolution in a protoplanetary disk. The disk began as a hot, com ...
... processes similar to those observed or inferred to occur in other disks around young stars. Specifically, these models were used to explain the chemical and isotopic properties of solar system materials as the result of their dynamical evolution in a protoplanetary disk. The disk began as a hot, com ...
Cold galaxies at low and high z
... Origin of the universe there are speculations about the origin of the universe theoretical physicists are trying to unify gravitation (ie General Relativity) and quantum theory into a single unified ‘theory of everything’ current favourite is ‘string theory’, but so far this makes no predictions ab ...
... Origin of the universe there are speculations about the origin of the universe theoretical physicists are trying to unify gravitation (ie General Relativity) and quantum theory into a single unified ‘theory of everything’ current favourite is ‘string theory’, but so far this makes no predictions ab ...
Molecular clumps in the W51 giant molecular cloud
... 2–1) and 13 CO (J = 2–1)]. Although some higher angular resolution observations (again of the ground state of 13 CO) have been made, these have been over smaller regions, typically surrounding one of the known H II regions within the W51 GMC (Koo 1999; Okumura et al. 2001; Sollins, Zhang & Ho 2004). ...
... 2–1) and 13 CO (J = 2–1)]. Although some higher angular resolution observations (again of the ground state of 13 CO) have been made, these have been over smaller regions, typically surrounding one of the known H II regions within the W51 GMC (Koo 1999; Okumura et al. 2001; Sollins, Zhang & Ho 2004). ...
Explosive sources of the highest energy radiation
... brightest radio source among known binary systems, with large flares that are attributed to its relativistic jets. The system exhibits a complex X-ray spectrum that fluctuates between two main states: “soft” and “hard”. The source is known to flare in radio when entering the “soft” state with associ ...
... brightest radio source among known binary systems, with large flares that are attributed to its relativistic jets. The system exhibits a complex X-ray spectrum that fluctuates between two main states: “soft” and “hard”. The source is known to flare in radio when entering the “soft” state with associ ...
X-Ray Spectroscopy of Stars
... mass loss and sensitive diagnostics of stellar-wind physics. In hot star binaries, winds may collide, thus forming very hot plasma in the wind collision region. The X-ray emission and its modulation with orbital phase then provide precise constraints on the colliding wind region, and hence the wind ...
... mass loss and sensitive diagnostics of stellar-wind physics. In hot star binaries, winds may collide, thus forming very hot plasma in the wind collision region. The X-ray emission and its modulation with orbital phase then provide precise constraints on the colliding wind region, and hence the wind ...
Constraining the Envelope Structure of L1527 IRS
... We cannot derive most physical parameters from scattered light images alone. Radiative transfer modeling, in conjunction with a detailed observational analysis, must be performed to derive the likely physical parameters of an object. The results from radiative transfer modeling can yield insights in ...
... We cannot derive most physical parameters from scattered light images alone. Radiative transfer modeling, in conjunction with a detailed observational analysis, must be performed to derive the likely physical parameters of an object. The results from radiative transfer modeling can yield insights in ...
Astro-tomography: CAT-scanning accretion in compact binaries
... Spikes at the accreting WD • Single density (ne= 3-4 1015 cm-3) Stark profiles describe the spike properties remarkably well • Kinematics and density conditions of the spike match a slowly rotating emission line region tied to the accreting white dwarf ...
... Spikes at the accreting WD • Single density (ne= 3-4 1015 cm-3) Stark profiles describe the spike properties remarkably well • Kinematics and density conditions of the spike match a slowly rotating emission line region tied to the accreting white dwarf ...
Open access
... outstanding science in a relatively near future. In particular, discovering other worlds like Earth and probing their atmosphere for evidence of life seem within reach with future exo-Earth characterisation nulling interferometry missions. By observing in the mid-infrared (6-20 µm), these space-base ...
... outstanding science in a relatively near future. In particular, discovering other worlds like Earth and probing their atmosphere for evidence of life seem within reach with future exo-Earth characterisation nulling interferometry missions. By observing in the mid-infrared (6-20 µm), these space-base ...
PDF (Version of Record) - CLoK
... nuclear cluster (the nearest in our sample), we obtained long-slit spectra on 2005 May 19 with the Double Imaging Spectrograph (DIS) on the Apache Point Observatory (APO) 3.5 m telescope. The DIS obtains both blue and red spectra simultaneously. We used the ‘‘medium-resolution’’ blue grating (1.22 8 ...
... nuclear cluster (the nearest in our sample), we obtained long-slit spectra on 2005 May 19 with the Double Imaging Spectrograph (DIS) on the Apache Point Observatory (APO) 3.5 m telescope. The DIS obtains both blue and red spectra simultaneously. We used the ‘‘medium-resolution’’ blue grating (1.22 8 ...
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.