Cool Dwarfs and High-z QSOs in the Deep Lens Survey

Details Cool Dwarfs and High-z QSOs in the Deep Lens Survey Cool Dwarfs and High-z QSOs in the Deep Lens Survey

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21330301t&link_type=abstract

American Astronomical Society, AAS Meeting #213, #303.01; Bulletin of the American Astronomical Society, Vol. 41, p.272

Other

Scientific paper

High-z QSOs (z>5.4) provide a laboratory for studying the early Universe, both by tracing structure formation, and by providing information about the state of reionization at earlier times. Cool dwarf stars and brown dwarfs are important components of our galaxy, which inform our models of stellar formation, core and atmospheric processes, and galactic structure, as well as the mass distribution at the very lowest levels. These utterly dissimilar astrophysical objects have something in common: they both have distinctive photometric signatures that allow them to be probabilistically identified in broad-band surveys. By combining deep (BVR=27, z'=24) imaging from the Deep Lens Survey with supplemental observations from ground-based near-IR (J and K bands) and the Spitzer Space Telescope IRAC imager, we can study the SEDs of candidate QSOs and cool dwarfs across up to 10 photometric bands, and cross-correlate with radio and other wavelengths for additional confirmation. We will present results from just over 8 sq. deg. of the Deep Lens Survey, including 3 sq. deg. of overlapping J- and K-band imaging in DLS Field 1, and 4 sq. deg. of Spitzer IRAC 4-band imaging in DLS Field 2. Using both color cuts and probabilistic typing, the distribution of brown dwarf and QSO candidates will be compared to predictions from models, and future possibilities for the remainder of the 20 sq. deg. DLS and other deep data sets will be discussed.

Affiliated with

Also associated with

No associations

Rating

Cool Dwarfs and High-z QSOs in the Deep Lens Survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cool Dwarfs and High-z QSOs in the Deep Lens Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cool Dwarfs and High-z QSOs in the Deep Lens Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1696798