Zobrazeno 51 - 60
of 233
pro vyhledávání: '"Hopp, Ulrich"'
Autor:
Drozdovsky, Igor O., Schulte-Ladbeck, Regina E., Hopp, Ulrich, Crone, Mary M., Greggio, Laura
We find that NGC6789 is the most nearby example of a Blue Compact Dwarf galaxy known to date. With the help of WFPC2 aboard the Hubble Space Telescope, we resolve NGC6789 into over 15,000 point sources in the V and I bands. The young stars of NGC6789
Externí odkaz:
http://arxiv.org/abs/astro-ph/0102452
Autor:
Schulte-Ladbeck, Regina E., Hopp, Ulrich, Greggio, Laura, Crone, Mary M., Drozdovsky, Igor O.
We report the results of near-IR imaging in J and H, of I Zw 36 ($\approx$Z$_{\odot}$/14) with the Hubble Space Telescope. Whereas imaging with the pre-COSTAR Faint Object Camera (FOC) previously resolved hot and massive stars in the near-UV, the NIC
Externí odkaz:
http://arxiv.org/abs/astro-ph/0102397
We present HST/WFPC2 single-star photometry for the blue dwarf galaxy UGCA 290, whose morphology is intermediate between classic iE Blue Compact Dwarfs and blue dwarfs which exhibit no red background sheet of older stars. The color-magnitude diagram
Externí odkaz:
http://arxiv.org/abs/astro-ph/0009504
We observed the Blue Compact Dwarf/Wolf-Rayet galaxy Mrk 178 with the NICMOS camera aboard HST. The galaxy is well resolved into individual stars in the near-IR; photometry in J and H yields color-magnitude diagrams containing 791 individual point so
Externí odkaz:
http://arxiv.org/abs/astro-ph/0007417
Autor:
Popescu, Cristina C., Hopp, Ulrich
We present a spectrophotometric catalogue of 90 emission-line galaxies (ELGs) discovered during an objective - prism survey that aimed to search for dwarf galaxies within the voids (Popescu et al. 1996, 1998). The paper presents line ratios, equivale
Externí odkaz:
http://arxiv.org/abs/astro-ph/9912490
We present near-infrared single-star photometry for the low-metallicity Blue Compact Dwarf galaxy VII~Zw~403. We achieve limiting magnitudes of F110W~$\approx$~25.5 and F160W~$\approx$~24.5 using one of the NICMOS cameras with the HST equivalents of
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909216
We present a study of the star formation properties of a sample of emission line galaxies (ELGs) with respect to their environment. This study is part of a bigger project that aimed to find galaxies in voids and to investigate the large scale structu
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909184
We present evidence for the existence of an old stellar halo in the Blue Compact Dwarf galaxy VII Zw 403. VII Zw 403 is the first Blue Compact Dwarf galaxy for which a clear spatial segregation of the resolved stellar content into a "core-halo" struc
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905102
We present medium deep CCD imaging in B, V, and I of the Pegasus Dwarf galaxy (And VI) which was recently found by Karachentsev & Karachentseva (1998), and independently also by Armandroff et al. (1999). The Calar Alto 2.2m images show a low surface
Externí odkaz:
http://arxiv.org/abs/astro-ph/9811281
We examine the stellar content of 10 dwarf irregular galaxies of which broad-band CCD photometry was published in Hopp & Schulte-Ladbeck (1995). We also present Halpha images for several of these galaxies. The galaxies in the sample are located outsi
Externí odkaz:
http://arxiv.org/abs/astro-ph/9809196