Extreme Red Stars II

Details Extreme Red Stars II Extreme Red Stars II

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9697g&link_type=abstract

HST Proposal ID #9697

Astronomy and Astrophysics

Astronomy

Hst Proposal Id #9697

Scientific paper

ACS provides unprecedented sensitivity in the far red, this coupled with recent astronomical pushes to ever cooler objects {e.g. new classifications for L and T stellar dwarfs, and extremely high redshift galaxies} increases the need for extending the photometric calibration to include such objects. We extend results from CAL/ACS 9665 with the same root title, in particular to obtain a reference STIS spectrum of the mid-L dwarf 2M0036. Results from 9665 showed stronger than expected wavelength sensitivity of both encircled energy and quantum efficiency. HRC observations will complement existing WFC, and grism observations will be obtained to further constrain the wavelength dependence of QE.

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