The Sub-stellar Population of Chamaeleon II

Details The Sub-stellar Population of Chamaeleon II The Sub-stellar Population of Chamaeleon II

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20510908a&link_type=abstract

American Astronomical Society Meeting 205, #109.08; Bulletin of the American Astronomical Society, Vol. 36, p.1533

Astronomy and Astrophysics

Astronomy

Scientific paper

We present preliminary results of a deep near-infrared survey toward Chamaeleon II, a star formation region being observed in the mid-infrared as part of the Spitzer Legacy Program: "From Molecular Cores to Planet Forming Disks". A deep 1-10 micron survey is the key to identifying candidate young, Jupiter-mass objects. The limits of our survey (24.5, 20, 19, and 18 in I, J, H & Ks) combined with the Spitzer IRAC limits permit us to detect young (t < 10 Myr) objects down to 2 Jupiter masses. The availability of photometry over the whole range where these objects emit will make it possible to more accurately distinguish cloud members from background stars than has been possible to date when only near-IR data were available. Our objects provide a testbed for validating atmospheric and evolutionary models of massive planets in a context where light from a parent star does not overwhelm the emission of the substellar object. For objects in the broad gap between the 2MASS limits and out limits, our data provide information about the photospheres. By looking for excess emission in the mid-IR, we detect circumstellar disks around brown dwarfs. For the subset of objects in our fields with disks, we constrain the IMF to masses below the deuterium burning limit. We will use the Spitzer results in combination with current disk models to learn about the presence and nature of cicumstellar disks around young brown dwarfs.

Affiliated with

Also associated with

No associations

Rating

The Sub-stellar Population of Chamaeleon II 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 The Sub-stellar Population of Chamaeleon II, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Sub-stellar Population of Chamaeleon II will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1642429