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10 papers · 2 filters
The HI Companions of HII Galaxies and Low Surface Brightness Dwarf Galaxies
Christopher L. Taylor
I study the VLA HI survey of HII galaxies by Taylor et al. (1995, ApJS, 99, 427; 1996, ApJS, 102, 189) and the VLA HI survey of low surface brightness (LSB) dwarf galaxies by Taylo…
RR Lyrae Stars in the MACHO Database
The MACHO Collaboration, D. Minniti, C. Alcock +18
The MACHO Project has catalogued RR Lyrae stars in the Large Magellanic Cloud, in the Galactic bulge, and 50 in the Sgr dwarf galaxy. These variables…
Gravitational Collapse and Star Formation in Logotropic and Non-Isothermal Spheres
Dean E. McLaughlin, Ralph E. Pudritz
We present semi-analytical similarity solutions for the inside-out, expansion-wave collapse of initially virialized gas clouds with non-isothermal equations of state. Results are g…
Accretion Disks Around Class 0 Protostars: The Case of VLA 1623
R. E. Pudritz, C. D. Wilson, J. E. Carlstrom +3
Continuum emission at 220 and 355 GHz from the prototype Class 0 source VLA 1623 has been detected using the JCMT-CSO interferometer. Gaussian fits to the data place an upper limit…
The MACHO Project LMC Variable Star Inventory IV: Multimode RR Lyrae Stars, Distance to the LMC and Age of the Oldest Stars
C. Alcock, R. A. Allsman, D. Alves +16
We report the discovery of 73 double-mode RR Lyrae (RRd) stars in fields near the bar of the LMC. The stars are detected among the MACHO database of short-period variables that cur…
The MACHO Project LMC Microlensing Results from the First Two Years and the Nature of the Galactic Dark Halo
C. Alcock, R. A. Allsman, D. Alves +16
The MACHO Project is a search for dark matter in the form of massive compact halo objects (Machos). Photometric monitoring of millions of stars in the Large Magellanic Cloud (LMC),…