Spectroscopy of Gravitational Lens Candidates from the HST Survey of BL Lac Objects

Details Spectroscopy of Gravitational Lens Candidates from the HST Survey of BL Lac Objects Spectroscopy of Gravitational Lens Candidates from the HST Survey of BL Lac Objects

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8135s&link_type=abstract

HST Proposal ID #8135

Physics

Hst Proposal Id #8135 Clusters Of Galaxies And Lensing

Scientific paper

We propose spectroscopic observations of two new gravitational lens candidates, 0502+675 and 1440+122, discovered in our HST R-band snapshot survey of ~100 BL Lac objects. Each contains a double point source with separation of only 0.3 arcsec. In each case, a candidate for the lensing galaxy is also found. For 0502+675, a subsequent NICMOS H-band image shows that the two point sources have similar R-H colors. STIS long-slit spectra of each point source will determine whether these candidates are lenses and also measure the redshift of the possible lensing galaxy. Due to the small image separation, HST spatial resolution is essential. These two sources, if confirmed as lenses, are particularly valuable for estimating H_0 because of the large amplitude and rapid flux variability that characterize BL Lac objects.

Affiliated with

Also associated with

No associations

Rating

Spectroscopy of Gravitational Lens Candidates from the HST Survey of BL Lac Objects 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 Spectroscopy of Gravitational Lens Candidates from the HST Survey of BL Lac Objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy of Gravitational Lens Candidates from the HST Survey of BL Lac Objects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-992561