Stellar Populations and lyα Emission from Lensed z ⪆ 6 Galaxies

Details Stellar Populations and lyα Emission from Lensed z ⪆ 6 Galaxies Stellar Populations and lyα Emission from Lensed z ⪆ 6 Galaxies

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iaus..225..387s&link_type=abstract

Gravitational Lensing Impact on Cosmology, IAU Symposium, vol. 225. Edited by Yannick Mellier and Georges Meylan, ISBN 052185196

Physics

Scientific paper

We present results from an SED analysis of two lensed high-z objects, the z=6.56 galaxy HCM6A behind the cluster Abell 370 discovered by Hu et al. (2002) and the triple arc at z ˜ 7 behind Abell 2218 found by Kneib et al. (2004). For HCM 6A we find indications for the presence of dust in this galaxy, and we estimate the properties of its stellar populations (SFR, age, etc.), and the intrinsic lyα emission. From the `best fit' reddening (E(B-V) ˜ 0.25) its estimated luminosity is L ˜ (1-4) × 1011 lsun, in the range of luminous infrared galaxies. For the arc behind Abell 2218 we find a most likely redshift of z ˜ 6.0-7.2 taking into account both our photometric determination and lensing considerations. SED fits indicate generally a low extinction but do not strongly constrain the SF history. Best fits have typical ages of ˜ 3 to 400 Myr. The apparent 4000 Å break observed recently by Egami et al. (2004) from combination of IRAC/Spitzer and HST observations can also well be reproduced with templates of young populations (˜ 15 Myr or even younger) and does not necessarily imply old ages. Finally, we briefly examine the detectability of dusty lensed high-z galaxies with Herschel and ALMA.

Affiliated with

Also associated with

No associations

Rating

Stellar Populations and lyα Emission from Lensed z ⪆ 6 Galaxies 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 Stellar Populations and lyα Emission from Lensed z ⪆ 6 Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stellar Populations and lyα Emission from Lensed z ⪆ 6 Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1397950