English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We exploit the strong lensing effect to explore the properties ofintrinsically faint and compact galaxies at intermediate redshift, at thehighest possible resolution at optical wavelengths. Our sample consists of 46strongly-lensed emission line galaxies discovered by the Sloan Lens ACS (SLACS)Survey. The galaxies have been imaged at high resolution with HST in threebands (V_HST, I_814 and H_160), allowing us to infer their size, luminosity,and stellar mass using stellar population synthesis models. Lens modeling isperformed using a new fast and robust code, klens, which we test extensively onreal and synthetic non-lensed galaxies, and also on simulated galaxiesmultiply-imaged by SLACS- like galaxy-scale lenses. Our tests show that ourmeasurements of galaxy size, flux, and Sersic index are robust and accurate,even for objects intrinsically smaller than the HST point spread function. Themedian magnification is 8.8, with a long tail that extends to magnificationsabove 40. Modeling the SLACS sources reveals a population of galaxies withcolors and Sersic indices (median n ~ 1) consistent with the objects detectedin the field with HST in the GEMS survey, but that are (typically) ~ 2magnitudes fainter and ~ 5 times smaller in apparent size. The closest analogare ultracompact emission line galaxies identified by HST grism surveys. Thelowest mass galaxies in our sample are comparable to the brightest Milky Waysatellites in stellar mass (10^7 solar masses) and have well-determined halflight radii of 0."05 (~0.3 kpc).

The Sloan Lens ACS Survey. XI. Beyond Hubble resolution: size, luminosity and stellar mass of compact lensed galaxies at intermediate redshift