The structure of the outer Galactic disc as revealed by IPHAS early A stars

@article{Sale2010TheSO,
  title={The structure of the outer Galactic disc as revealed by IPHAS early A stars},
  author={S E Sale and J E Drew and Christian Knigge and Albert A. Zijlstra and Michael J. Irwin and R. A. H. Morris and Steven Phillipps and Jeremy J. Drake and Robert Greimel and Yvonne C. Unruh and Paul J. Groot and Antonio Mampaso and Nicholas A. Walton},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2010},
  volume={402},
  pages={713-723}
}
This study is an investigation of the stellar density profile of the Galactic disc in the Anticentre direction. We select over 40,000 early A stars from IPHAS photometry in the Galactic longitude range 160 ◦ < l < 200 ◦ close to the equatorial plane (−1 ◦ < b < +1 ◦ ). We then compare their observed reddening-corrected apparent magnitude distribution with simulated photometry obtained from parameterised models in order to set constraints on the Anticentre stellar density profile. By selecting A… Expand

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References

SHOWING 1-10 OF 94 REFERENCES
The Stellar Populations of M33's Outer Regions
Studying the stellar populations in the outskirts of spiral galaxies can provide important constraints on their structure, formation, and evolution. To that end, we present VI photometry obtainedExpand
Galactic Metallicity Gradients Derived from a Sample of OB Stars
The distribution of stellar abundances along the Galactic disk is an important constraint for models of chemical evolution and Galaxy formation. In this study we derive radial gradients of C, N, O,Expand
NGC 300: An Extremely Faint, Outer Stellar Disk Observed to 10 Scale Lengths
We have used the Gemini Multi-Object Spectrograph (GMOS) on the Gemini South 8 m telescope in exceptional conditions (06 FWHM seeing) to observe the outer stellar disk of the Sculptor Group galaxyExpand
THE ABUNDANCE GRADIENT IN THE EXTREMELY FAINT OUTER DISK OF NGC 300
In an earlier work, we showed for the first time that the resolved stellar disk of NGC 300 is very extended with no evidence for truncation, a phenomenon that has since been observed in other diskExpand
The Stellar Populations in the Outer Regions of M33. II. Deep ACS Imaging
Studying the stellar populations in the outskirts of spiral galaxies can provide important constraints on their structure, formation, and evolution. To that end, we present VI photometry obtainedExpand
The structure of galactic disks - Studying late-type spiral galaxies using SDSS
Using imaging data from the SDSS survey, we present the g' and r' radial stellar light distribution of a complete sample of similar to 90 face-on to intermediate inclined, nearby, late-type (Sb-Sdm)Expand
Early‐A stars from IPHAS, and their distribution in and around the Cyg OB2 association
Stellar photometry derived from the INT/WFC Photometric HSurvey of the North- ern Galactic Plane (IPHAS) can be used to identify large, reliable samples of A0-A5 dwarfs. For every A star, soExpand
SINFONI in the Galactic Center: young stars and IR flares in the central light month
We report 75 milli-arcsec resolution, near-IR imaging spectroscopy within the central 30 light days of the Galactic Center [...]. To a limiting magnitude of K~16, 9 of 10 stars in the central 0.4Expand
The Detection of Inside-out Disk Growth in M33
We present resolved stellar photometry of 4 fields along the major axis of the M33 disk from images taken with the Advanced Camera for Surveys aboard the Hubble Space Telescope. The photometryExpand
The Milky Way Tomography with SDSS. I. Stellar Number Density Distribution
Using the photometric parallax method we estimate the distances to ~48 million stars detected by the Sloan Digital Sky Survey (SDSS) and map their three-dimensional number density distribution in theExpand
...
1
2
3
4
5
...