Star Formation in Molecular Clouds: Observation and Theory
Star-formation (SF) processes occurring on the scale of giant molecular clouds (10 to the 6th solar masses and 10 to the 20th cm) or smaller are discussed, reviewing the results of recent theoretical…
Photoevaporation of Circumstellar Disks Due to External Far-Ultraviolet Radiation in Stellar Aggregates
- F. Adams, D. Hollenbach, G. Laughlin, U. Gorti
- Physics, Geology
- 20 April 2004
When stars form within small groups (with N* ≈ 100-500 members), their circumstellar disks are exposed to relatively little extreme-ultraviolet (EUV; hν > 13.6 eV) radiation but a great deal of…
Dense Cores Mapped in Ammonia: A Database
We present a database of 264 cores mapped in the (J,K) = (1,1) and (2,2) lines of NH3. We list the core gas properties—peak positions, total ammonia column densities, intrinsic line widths, kinetic…
The Birth Environment of the Solar System
- F. Adams
- Physics
- 29 January 2010
This review examines our current understanding of the possible birth environments of our Solar System. Because most stars form within groups and clusters, the question becomes one of determining the…
THE ASYMPTOTIC STRUCTURE OF SPACE-TIME
- F. Adams, M. Busha, A. Evrard, R. Wechsler
- Physics
- 13 August 2003
Astronomical observations strongly suggest that our universe is now accelerating and contains a substantial admixture of dark vacuum energy. Using numerical simulations to study this newly…
Spectral evolution of young stellar objects
An evolutionary sequence, from protostars to pre-main sequence stars, for the classification of young stellar objects is derived by comparing the predictions of the theoretical protostar models of…
ON THE ANOMALOUS RADII OF THE TRANSITING EXTRASOLAR PLANETS
- G. Laughlin, M. Crismani, F. Adams
- Physics, Geology
- 30 January 2011
We present a systematic evaluation of the agreement between the observed radii of 90 well-characterized transiting extrasolar giant planets and their corresponding model radii. Our model radii are…
The planet nine hypothesis
- K. Batygin, F. Adams, M. Brown, J. Becker
- Geology, PhysicsPhysics reports
- 26 February 2019
Sling amplification and eccentric gravitational instabilities in gaseous disks
- F. Shu, S. Tremaine, F. Adams, S. Ruden
- Physics, Geology
- 1 August 1990
An analytical description is presented of the modal mechanisms relevant to a recently discovered type of eccentric gravitational instability in nearly Keplerian disks. A quantum condition is derived…
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