225 citations · 767 across the 18 of their papers we have counts for
12 papers · 1 filter
Variation of Galactic Bar Length with Amplitude and Density as Evidence for Bar Growth over a Hubble Time
Bruce G. Elmegreen, Debra Meloy Elmegreen, Johan H. Knapen +3
K_s-band images of 20 barred galaxies show an increase in the peak amplitude of the normalized m=2 Fourier component with the R_25-normalized radius at this peak. This implies that…
Keck spectroscopy and Spitzer Space Telescope analysis of the outer disk of the Triangulum Spiral Galaxy M33
David L. Block, Francoise Combes, Ivanio Puerari +11
In an earlier study of the spiral galaxy M33, we photometrically identified arcs or outer spiral arms of intermediate age (0.6 Gyr - 2 Gyr) carbon stars precisely at the commenceme…
Fourier Dissection of Early-Type Galaxy Bars
R. Buta, E. Laurikainen, H. Salo +2
This paper reports on a near-infrared survey of early-type galaxies designed to provide information on bar strengths, bulges, disks, and bar parameters in a statistically well-defi…
The Near-infrared S0 Survey III: Morphology of 15 Southern Early-type Disk Galaxies
E. Laurikainen, H. Salo, R. Buta +3
Structural analysis has been performed for a sample of 15 Southern early-type disk galaxies, mainly S0s, using high resolution -band images. The galaxies are mostly barred and…
Pseudobulges in the Disk Galaxies NGC 7690 and NGC 4593
John Kormendy, Mark E. Cornell, David L. Block +2
We present Ks-band surface photometry of NGC 7690 (Hubble type Sab) and NGC 4593 (SBb). We find that, in both galaxies, a major part of the "bulge" is as flat as the disk and has a…
Very Luminous Carbon Stars in the Outer Disk of the Triangulum Spiral Galaxy
D. L. Block, K. C. Freeman, T. H. Jarrett +4
Stars with masses in the range from about 1.3 to 3.5 Mo pass through an evolutionary stage where they become carbon stars. In this stage, which lasts a few Myr, these stars are ext…