78 citations · 464 across the 37 of their papers we have counts for
6 papers · 1 filter
Structure and Evolution of the Opacity of Spiral Disks
B. W. Holwerda, R. A. González, W. C. Keel +3
The opacity of a spiral disk due to dust absorption influences every measurement we make of it in the UV and optical. Two separate techniques directly measure the total absorption…
Spitzer's View of Edge-on Spirals
B. W. Holwerda, R. S. de Jong, A. Seth +4
Edge-on spiral galaxies offer a unique perspective on disks. One can accurately determine the height distribution of stars and ISM and the line-of-sight integration allows for the…
Spiral Disk Opacity from Occulting Galaxy Pairs in the Sloan Digital Sky Survey
B. W. Holwerda, W. C. Keel, A. Bolton
A spiral galaxy partially ovelapping a more distant elliptical offers an unique opportunity to measure the dust extinction in the foreground spiral. From the Sloan Digital Sky Surv…
Stellar populations across the NGC4244 truncated galactic disk
Roelof S. de Jong, A. C. Seth, D. J. Radburn-Smith +12
We use HST/ACS to study the resolved stellar populations of the nearby, nearly edge-on galaxy NGC4244 across its outer disk surface density break. The stellar photometry allows us…
Gaps in the cloud cover? Comparing extinction measures in spiral disks
B. W. Holwerda, M. Meyer, M. Regan +11
Dust in galaxies can be mapped by either the FIR/sub-mm emission, the optical or infrared reddening of starlight, or the extinction of a known background source. We compare two dus…
A dust component 2 kpc above the plane in NGC 891
P. Kamphuis, B. W. Holwerda, R. J. Allen +2
The halo of NGC 891 has been the subject of studies for more than a decade. One of its most striking features is the large asymmetry in H emission. In this letter, we will take…