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NGC 5907 - Splinter galaxy
No full textThis image shows the galaxy NGC 5907, also known as "Splinter Galaxy". It is located at the Draco constellation and it is very bright when seen from the planet EarthComponente Curricular::Educação Superior::Ciências Exatas e da Terra::Astronomi
NGC 5907 - Splinter galaxy
No full textThis image shows the galaxy NGC 5907, also known as "Splinter Galaxy". It is located at the Draco constellation and it is very bright when seen from the planet EarthComponente Curricular::Educação Superior::Ciências Exatas e da Terra::Astronomi
NGC 5907 - Splinter galaxy
No full textThis image shows the galaxy NGC 5907, also known as "Splinter Galaxy". It is located at the Draco constellation and it is very bright when seen from the planet EarthComponente Curricular::Educação Superior::Ciências Exatas e da Terra::Astronomi
NGC 5907 - Splinter galaxy
No full textThis image shows the galaxy NGC 5907, also known as "Splinter Galaxy". It is located at the Draco constellation and it is very bright when seen from the planet EarthComponente Curricular::Educação Superior::Ciências Exatas e da Terra::Astronomi
Block Card 5907 Carnation Drive
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: 5907 Carnation Drive (Toledo, Ohio) | Dwelling | Oak Grove Gardens (Toledo, Ohio) | Reynolds Corners Area (Toledo, Ohio) | Cottage Styl
Block Card 5907 Foth Drive
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Cape Cod Style | 5907 Foth Avenue (Toledo, Ohio) | Dwelling | Echo Park Addition (Toledo, Ohio) | Trilby Area (Toledo, Ohio)
The Stellar Content of the Halo of NGC 5907 from Deep HST NICMOS Imaging
Full text linkWe present H-band images obtained with the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) of a field 75 " (5 kpc) above the plane of the disk of the edge-on spiral galaxy NGC 5907. Ground-based observations have shown that NGC 5907 has a luminous halo with a shallow radial profile between 4 and 8 kpc that roughly traces the dark matter distribution of the galaxy deduced from its rotation curve. Our NICMOS observations were designed to resolve bright giants in the halo of NGC 5907 to constrain its stellar composition with the goal of understanding its nature and origin. More than 100 stars are expected in the NICMOS images if the dwarf-to-giant ratio in the halo of NGC 5907 is consistent with that expected from standard stellar initial mass functions and if ground-based estimates of the distance to NGC 5907 and the integrated colors of its halo are correct. Instead we observe only one candidate giant star.-This apparent discrepancy can be resolved by assuming either a significantly larger distance than that suggested by several studies or a halo metallicity much lower than that suggested by ground-based colors and as low as that in metal-poor Galactic globular clusters. If previous distance and halo color estimates for NGC 5907 are correct, our NICMOS results suggest that its extended light is composed of stars that formed with an initial mass function different than that observed locally, leading to a much higher ratio of dwarfs to giants. We describe how these three possible explanations for the absence of bright giants in our NICMOS images of the halo of NGC 5907 might be constrained by future observations
Ring Structure and Warp of NGC 5907: Interaction with Dwarf Galaxies
Full text linkThe edge-on, nearby spiral galaxy NGC 5907 has long been used as the prototype of a “noninteracting” warped galaxy. We report here the discovery of two interactions with companion dwarf galaxies that substantially change this picture. First, a faint ring structure is discovered around this galaxy that is likely due to the tidal disruption of a companion dwarf spheroidal galaxy. The ring is elliptical in shape with the center of NGC 5907 close to one of the ring’s foci. This suggests that the ring material is in orbit around NGC 5907. No gaseous component to the ring has been detected either with deep Ha images or in Very Large Array H i 21 cm line maps. The visible material in the ring has an integrated luminosity ·108 L,, and its brightest part has a color R 2 I » 0.9. All of these properties are consistent with the ring being a tidally disrupted dwarf spheroidal galaxy. Second, we find that NGC 5907 has a dwarf companion galaxy, PGC 54419, which is projected to be only 36.9 kpc from the center of NGC 5907, close in radial velocity (DV 5 45 km s21) to the giant spiral galaxy. This dwarf is seen at the tip of the H i warp and in the direction of the warp. Hence, NGC 5907 can no longer be considered noninteracting but is obviously interacting with its dwarf companions much as the Milky Way interacts with its dwarf galaxies. These results, coupled with the finding by others that dwarf galaxies tend to be found around giant galaxies, suggest that tidal interaction with companions, even if containing a mere 1% of the mass of the parent galaxy, might be sufficient to excite the warps found in the disks of many large spiral galaxies
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