THE EXTRAGALACTIC DISTANCE SCALE WITHOUT CEPHEIDS
Jeremy Mould, Shoko Sakai
Astrophysical Journal | IOP PUBLISHING LTD | Published : 2008
This work is based on archival observations made with the Hubble Space Telescope, which is operated by the Space Telescope Science Institute under a contract with NASA. This work makes use of 2MASS data products, a joint project of the University of Massachusetts and IPAC/Caltech, funded by NASA and NSF. In addition to DAOPHOT, this research has made use of IRAF, which is distributed by NOAO. NOAO is operated by AURA under a cooperative agreement with NSF.