Results 51 to 60 of about 4,646,519 (213)

Investigating emission-line galaxy surveys with the Sloan Digital Sky Survey infrastructure [PDF]

open access: yes, 2012
The Baryon Acoustic Oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to probe the accelerated expansion of the Universe.
J. Comparat   +24 more
semanticscholar   +1 more source

Procedures for Constraining Robotic Fiber Positioning for Highly Multiplexed Spectroscopic Surveys: The Case of FPS for SDSS-V

open access: yesThe Astronomical Journal
One crucial aspect of planning any large scale astronomical survey is constructing an observing strategy that maximizes reduced data quality. This is especially important for surveys that are rather heterogeneous and broad-ranging in their science goals.
Ilija Medan   +14 more
doaj   +1 more source

DELVE 6: An Ancient, Ultra-faint Star Cluster on the Outskirts of the Magellanic Clouds

open access: yesThe Astrophysical Journal Letters, 2023
We present the discovery of DELVE 6, an ultra-faint stellar system identified in the second data release of the DECam Local Volume Exploration (DELVE) survey. Based on a maximum-likelihood fit to its structure and stellar population, we find that DELVE 6
W. Cerny   +26 more
doaj   +1 more source

The All-Sky 408 MHz Survey [PDF]

open access: yesSymposium - International Astronomical Union, 1981
The 408 MHz All-sky Survey has been made from four radio continuum surveys observed between 1965 and 1978, using the Jodrell Bank MKI telescope, the Effelsberg 100 metre telescope and the Parkes 64 metre telescope. A detailed description of the survey data reduction and calibration methods, with preliminary astronomical results will soon be published ...
C. G. T. Haslam   +2 more
openaire   +1 more source

The Future of Astrometry in Space

open access: yesFrontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
doaj   +1 more source

Surveying the Bright Sky [PDF]

open access: yesProceedings of the International Astronomical Union, 2011
AbstractThe AAVSO is initiating a new survey of the sky. It will cover the entire visible sky, both north and south, on a daily basis, in two colours, and with a limiting magnitude of V = 17. This will be a perfect complement to LSST, but will be available years earlier and will continue into the indefinite future.
openaire   +1 more source

ASTEROIDS SEARCH RESULTS IN LARGE PHOTOGRAPHIC SKY SURVEYS

open access: yesOdessa Astronomical Publications, 2017
Photographic observations of XX century contained numerous and varied information about all objects  and  events  of  the  Universe  fixed  on  plates.  The original and interesting observations of small bodies of the Solar  system  in  previous  years ...
S. V. Shatokhina   +4 more
doaj   +1 more source

Synoptic Sky Surveys and the Diffuse Supernova Neutrino Background: Removing Astrophysical Uncertainties and Revealing Invisible Supernovae [PDF]

open access: yes, 2010
The cumulative (anti)neutrino production from all core-collapse supernovae within our cosmic horizon gives rise to the diffuse supernova neutrino background (DSNB), which is on the verge of detectability.
A. Lien, B. Fields, J. Beacom
semanticscholar   +1 more source

The Hobby–Eberly Telescope VIRUS Parallel Survey (HETVIPS)

open access: yesThe Astrophysical Journal
The Hobby–Eberly Telescope (HET) VIRUS Parallel Survey (HETVIPS) is a blind spectroscopic program that sparsely covers approximately two-thirds of the celestial sphere and consists of roughly 252 million fiber spectra.
Gregory R. Zeimann   +8 more
doaj   +1 more source

BELARUSIAN PROJECT “ASTROBLOKNOT” (ASTRONOMICAL NOTEBOOK) AND DATA MINING: RESULTS OBTAINED IN THE CONSTELLATION OF EQUULEUS

open access: yesOdessa Astronomical Publications, 2013
Many photometric sky surveys are currently available on the  open-access web-sources. The Northern Sky Variability Survey (NSVS), the All Sky Automated Survey 3 (ASAS-3) and the Catalina Real-Time Transient Survey (CRTS) are the most popular among them ...
Ivan Sergey   +3 more
doaj   +1 more source

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