GALEX Arecibo SDSS Survey

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GALEX Arecibo SDSS Survey
Survey type astronomical survey   OOjs UI icon edit-ltr-progressive.svg
Target galaxy   OOjs UI icon edit-ltr-progressive.svg
Observations Arecibo Telescope   OOjs UI icon edit-ltr-progressive.svg

GALEX Arecibo SDSS Survey (GASS) is a large targeted survey at Arecibo Observatory that has been underway since 2008 to measure the neutral hydrogen content of a representative sample of approximately 1000 massive galaxies selected using the Sloan Digital Sky Survey and GALEX imaging surveys. The telescope being used is the world's largest single-dish radio telescope and can receive signals from distant objects.

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Radio telescope Directional radio antenna used in radio astronomy

A radio telescope is a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources in the sky. Radio telescopes are the main observing instrument used in radio astronomy, which studies the radio frequency portion of the electromagnetic spectrum emitted by astronomical objects, just as optical telescopes are the main observing instrument used in traditional optical astronomy which studies the light wave portion of the spectrum coming from astronomical objects. Unlike optical telescopes, radio telescopes can be used in the daytime as well as at night.

Arecibo may refer to:


The Galaxy Evolution Explorer (GALEX) was an orbiting ultraviolet space telescope which was launched on 28 April 2003 and operated until early 2012.

Apache Point Observatory

The Apache Point Observatory is an astronomical observatory located in the Sacramento Mountains in Sunspot, New Mexico, United States, approximately 18 miles (29 km) south of Cloudcroft. The observatory is operated by New Mexico State University (NMSU) and owned by the Astrophysical Research Consortium (ARC). Access to the telescopes and buildings is private and restricted.

Sloan Digital Sky Survey Multi-spectral imaging and spectroscopic redshift survey

The Sloan Digital Sky Survey or SDSS is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United States. The project was named after the Alfred P. Sloan Foundation, which contributed significant funding.

The Digitized Sky Survey (DSS) is a digitized version of several photographic astronomical surveys of the night sky, produced by the Space Telescope Science Institute between 1983 and 2006.

Astronomical survey General map or image of a region of the sky with no specific observational target.

An astronomical survey is a general map or image of a region of the sky that lacks a specific observational target. Alternatively, an astronomical survey may comprise a set of many images or spectra of objects that share a common type or feature. Surveys are often restricted to one band of the electromagnetic spectrum due to instrumental limitations, although multiwavelength surveys can be made by using multiple detectors, each sensitive to a different bandwidth.

NGC 4565 Edge-on spiral galaxy in the constellation Coma Berenices

NGC 4565 is an edge-on spiral galaxy about 30 to 50 million light-years away in the constellation Coma Berenices. It lies close to the North Galactic Pole and has a visual magnitude of approximately 10. It is known as the Needle Galaxy for its narrow profile. First recorded in 1785 by William Herschel, it is a prominent example of an edge-on spiral galaxy.

Arp 220 Luminous infrared galaxy in the constellation Serpens

Arp 220 is the result of a collision between two galaxies which are now in the process of merging. It is the 220th object in Halton Arp's Atlas of Peculiar Galaxies.

NGC 1073 Barred spiral galaxy in the constellation Cetus

NGC 1073 is a barred spiral galaxy in the constellation Cetus. The galaxy is estimated to be about 55 million light years from Earth, possess a disk spanning an estimated 80,000 light years in diameter, and likely contains a type of active core, called an HII nucleus.

NGC 4559 Intermediate spiral galaxy in the constellation Coma Berenicies

NGC 4559 is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices. Distance estimates for NGC 4559 range from about 28 million light-years to 31 million light-years, averaging about 29 million light-years.

NGC 7662 Planetary nebula in the constellation Andromeda

NGC 7662 is a planetary nebula located in the constellation Andromeda. is a wiki and interactive sky map that covers more than half a billion celestial objects. Users can view the whole star sky at once and zoom in to view areas in greater detail. WikiSky includes many stars, galaxies, constellations, and planets, but it is still in development. Users can also edit information about different stars by writing articles, adding Internet links, uploading images, or create a special interest group for a specific task. The website, although still available for users to visit, has not shown much activity since 2010.

NGC 4244 Spiral galaxy in the constellation Canes Venatici

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NGC 5985 Spiral galaxy in the constellation Draco

NGC 5985 is a spiral galaxy located in the northern constellation Draco. NGC 5985 was discovered by William Herschel in 1788.

Christy A. Tremonti is an observational astronomer on the faculty at the University of Wisconsin–Madison. She was a 2005 Hubble Fellow while at the University of Arizona. She received her PhD from Johns Hopkins University in 2003 and her BS from Colgate University in 1994. She completed her dissertation, "The physical properties of low redshift star forming galaxies: Insights from the space-UV and 20,000 SDSS spectra", under the supervision of Timothy M. Heckman.

Constance "Connie" M. Rockosi is a chair of the Astronomy and Astrophysics Department at the University of California, Santa Cruz. She earned her PhD in 2001 and helped design the camera for the telescope that was used as part of the initial Sloan Digital Sky Survey (SDSS). She also was in charge of the SDSS-III domain for the Sloan Extension for Galactic Understanding and Exploration (SEGUE) project and is the primary investigator on SEGUE-II. Her focuses involve the study of the Milky Way galaxy, with a focus on the evolution that it took to reach its current state. She believes that through the study of our own galaxy, and the way that it formed, we can understand the formation of other galaxies during the Redshift phase of their creation. The purpose of her research is to explore the effects of major accretion events in the formation of the Milky Way, to understand why certain properties of the galaxy exist as they do.

Howard J. Brewington American astronomer

Howard J. Brewington is an American comet discoverer and former professional telescope operator of the Sloan Digital Sky Survey.

The ALFALFA research project is located at the Arecibo Observatory and started on February 4th 2005. It is still ongoing. The name is the abbreviation of Arecibo Legacy Fast ALFA. ALFA is the abbreviation of Arecibo L-Band Feed Array.