Engineering Papers⌕ Search
Home/Archive/NASA NTRS

NASA NTRS · 20070021668

Observing NGC 4151 with the Keck Interferometer

Swain, Mark R.
View original source ↗Export metadata ↓

Abstract

Observations of the nucleus of NGC 4151 at 2.2 microns using the two 10-meter Keck telescopes as an interferometer show a marginally resolved source less than or equal to 0.1 pc in diameter. These observations are the first measurement of an extragalactic source with an optical/IR interferometer. These observations represent a ten-fold improvement in angular resolution when compared to previous near-infrared measurements of AGN and make it possible to test the subparsecscale, near-infrared emission models of NGC 4151.

Explore related subjects

interferometryActive Galactic Nuclei (AGN)

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Swain, Mark R.. 2004-06-21. Observing NGC 4151 with the Keck Interferometer. https://ntrs.nasa.gov/citations/20070021668

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

NASA NTRS2013

A Possible Future for Space-Based Interferometry

We address the question of space interferometry following the recent outcome of the science themes selection by ESA for the L2/L3 missions slots. We review the current context of exoplanetary sciences and its impact for an interferometric mission. We argue that space interferometry will make a major step forward when the scientific communities interested in this technique will merge their efforts into a coherent technology development plan.

interferometry↗
NASA NTRS2013

SWOT Oceanography and Hydrology Data Product Simulators

The proposed Surface Water and Ocean Topography (SWOT) mission would demonstrate a new measurement technique using radar interferometry to obtain wide-swath measurements of water elevation at high resolution over ocean and land, addressing the needs of both the hydrology and oceanography science communities. To accurately evaluate the performance of the proposed SWOT mission, we have developed several data product simulators at different levels of fidelity and complexity.

interferometry↗