The Coma Morphology Due to an Extended Active Region and the Implications for the Spin State of Comet Hale-Bopp [0.03%]
日全食期间观测到的大范围活动区以及哈雷鲍勃彗星的自转状态分析
NH Samarasinha
NH Samarasinha
We show that the circular character of continuum structures observed in the coma of comet Hale-Bopp around the perihelion passage is most likely due to a dust jet from a large extended active region on the surface. The coma morphology due t...
CA Trujillo,DC Jewitt,JX Luu
CA Trujillo
We present the discovery of three new scattered Kuiper Belt objects (SKBOs) from a wide-field survey of the ecliptic. This continuing survey has to date covered 20.2 deg2 to a limiting red magnitude of 23.6. We combine the data from this ne...
N Smith,RD Gehrz
N Smith
Near-infrared imaging at two phases in the 5 yr spectroscopic cycle of eta Carinae reveals changes in the spatial structure of the inner core that may be related to recently reported near-infrared photometric variability. The central source...
Modeling the X-Ray Timing Properties of Cygnus X-1 Caused by Waves Propagating in a Transition Disk [0.03%]
传播在过渡盘中的波动导致天鹅座X-1的X射线时变性质建模
R Misra
R Misra
We show that waves propagating in a transition disk can explain the short-term temporal behavior of Cygnus X-1. In the transition-disk model, the spectrum is produced by saturated Comptonization within the inner region of the accretion disk...
TM Brown,CW Bowers,RA Kimble et al.
TM Brown et al.
The rest-frame UV-to-optical flux ratio, which characterizes the "UV upturn" phenomenon, is potentially the most sensitive tracer of age in elliptical galaxies; models predict that it may change by orders of magnitude over the course of a f...
Resolved CO (1 --> 0) Nuclei in IRAS 14348-1447: Evidence for Massive Bulge Progenitors to Ultraluminous Infrared Galaxies [0.03%]
红外深源IRAS 14348-1447中的CO（1 -> 0）核：特超星暴星系的祖先来自大质量银心成员的证据
AS Evans,JA Surace,JM Mazzarella
AS Evans
High-resolution, CO (1 --> 0) interferometry of the ultraluminous infrared galaxy IRAS 14348-1447 is presented. The merger system has a molecular gas mass of approximately 3x1010 M middle dot in circle and a projected nuclear separation of ...
C Murali
C Murali
The properties of the Magellanic Stream constrain the density of coronal gas in the distant Galactic halo. We show that motion through ambient gas can strongly heat Stream clouds, driving mass loss and causing evaporation. If the ambient ga...
Evidence for Multiple Mergers among Ultraluminous Infrared Galaxies: Remnants of Compact Groups? [0.03%]
超亮红外星系中多重并合的证据：紧致星系群遗迹？
KD Borne,H Bushouse,RA Lucas et al.
KD Borne et al.
In a large sample of ultraluminous infrared galaxies (ULIRGs) imaged with the Hubble Space Telescope, we have identified a significant subsample that shows evidence for multiple mergers. The evidence is seen among two classes of ULIRGs: (1)...
PJ Outram,RF Carswell,T Theuns
PJ Outram
Recent numerical simulations have lead to a paradigm shift in our understanding of the intergalactic medium and the loss of a physical justification for Voigt profile fitting of the Lyalpha forest. Many individual lines seen in simulated sp...
YP Jing,Y Suto
YP Jing
We perform a series of high-resolution N-body simulations designed to examine the density profiles of dark matter halos. From 12 simulated halos ranging in mass from 2x1012 to 5x1014 h-1 M middle dot in circle (represented by approximately ...