scholarly journals 26 NEW MIRA VARIABLES FROM THE ZTF SURVEY

2021 ◽  
pp. 1-45
Author(s):  
BERNHARD KLAUS ◽  
STEFAN HÜMMERICH,
Keyword(s):  
Survey Data ◽  
Light Curves ◽  
Mira Variables ◽  
Sky Survey

We have continued our search for hitherto unregistered Mira variables in publicly available sky survey data, using observations from the Zwicky Transient Facility and the information provided in the Zwicky Transient Facility Suspected Variables Catalog, which led to the discovery of 26 new Mira stars. Essential data as well as light curves and phase plots for all stars are presented.

scholarly journals SuperWASP variable stars: classifying light curves using citizen science

2021 ◽  
Vol 502 (1) ◽  
pp. 1299-1311
Author(s):  
Heidi B Thiemann ◽  
Andrew J Norton ◽  
Hugh J Dickinson ◽  
Adam McMaster ◽  
Ulrich C Kolb
Keyword(s):  
Variable Stars ◽  
Eclipsing Binaries ◽  
Light Curves ◽  
Data Set ◽  
Resultant Data ◽  
Sky Survey ◽  
Short Period ◽  
Contact Binaries ◽  
Analysis Of Results

ABSTRACT We present the first analysis of results from the SuperWASP variable stars Zooniverse project, which is aiming to classify 1.6 million phase-folded light curves of candidate stellar variables observed by the SuperWASP all sky survey with periods detected in the SuperWASP periodicity catalogue. The resultant data set currently contains >1 million classifications corresponding to >500 000 object–period combinations, provided by citizen–scientist volunteers. Volunteer-classified light curves have ∼89 per cent accuracy for detached and semidetached eclipsing binaries, but only ∼9 per cent accuracy for rotationally modulated variables, based on known objects. We demonstrate that this Zooniverse project will be valuable for both population studies of individual variable types and the identification of stellar variables for follow-up. We present preliminary findings on various unique and extreme variables in this analysis, including long-period contact binaries and binaries near the short-period cut-off, and we identify 301 previously unknown binaries and pulsators. We are now in the process of developing a web portal to enable other researchers to access the outputs of the SuperWASP variable stars project.

scholarly journals CONSTRAINTS ON THE SHAPE OF THE MILKY WAY DARK MATTER HALO FROM JEANS EQUATIONS APPLIED TO SLOAN DIGITAL SKY SURVEY DATA

2012 ◽  
Vol 758 (1) ◽  
pp. L23 ◽  
Author(s):  
Sarah R. Loebman ◽  
Željko Ivezić ◽  
Thomas R. Quinn ◽  
Fabio Governato ◽  
Alyson M. Brooks ◽  
...  
Keyword(s):  
Dark Matter ◽  
Survey Data ◽  
Milky Way ◽  
Sloan Digital Sky Survey ◽  
Dark Matter Halo ◽  
Sky Survey

scholarly journals Analysis of Systematic Effects and Statistical Uncertainties in Angular Clustering of Galaxies from Early Sloan Digital Sky Survey Data

2002 ◽  
Vol 579 (1) ◽  
pp. 48-75 ◽  
Author(s):  
Ryan Scranton ◽  
David Johnston ◽  
Scott Dodelson ◽  
Joshua A. Frieman ◽  
Andy Connolly ◽  
...  
Keyword(s):  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Sky Survey ◽  
Systematic Effects

scholarly journals Karhunen‐Loeve Estimation of the Power Spectrum Parameters from the Angular Distribution of Galaxies in Early Sloan Digital Sky Survey Data

2003 ◽  
Vol 591 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Alexander S. Szalay ◽  
Bhuvnesh Jain ◽  
Takahiko Matsubara ◽  
Ryan Scranton ◽  
Michael S. Vogeley ◽  
...  
Keyword(s):  
Angular Distribution ◽  
Power Spectrum ◽  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Sky Survey

scholarly journals The Angular Power Spectrum of Galaxies from Early Sloan Digital Sky Survey Data

2002 ◽  
Vol 571 (1) ◽  
pp. 191-205 ◽  
Author(s):  
Max Tegmark ◽  
Scott Dodelson ◽  
Daniel J. Eisenstein ◽  
Vijay Narayanan ◽  
Roman Scoccimarro ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Angular Power Spectrum ◽  
Sky Survey

scholarly journals Higher Order Moments of the Angular Distribution of Galaxies from Early Sloan Digital Sky Survey Data

2002 ◽  
Vol 570 (1) ◽  
pp. 75-85 ◽  
Author(s):  
Istvan Szapudi ◽  
Joshua A. Frieman ◽  
Roman Scoccimarro ◽  
Alexander S. Szalay ◽  
Andrew J. Connolly ◽  
...  
Keyword(s):  
Angular Distribution ◽  
Survey Data ◽  
Higher Order ◽  
Sloan Digital Sky Survey ◽  
Higher Order Moments ◽  
Sky Survey

scholarly journals Influences of Galaxy Interactions on AGN Activity

2013 ◽  
Vol 30 ◽  
Author(s):  
Xin-Fa Deng ◽  
Guisheng Yu ◽  
Peng Jiang
Keyword(s):  
Survey Data ◽  
Strong Evidence ◽  
Sloan Digital Sky Survey ◽  
Limited Sample ◽  
Galaxy Interactions ◽  
Opposite Trend ◽  
Main Galaxy ◽  
Isolated Galaxies ◽  
Sky Survey ◽  
Data Release

AbstractUsing two volume-limited Main galaxy samples of the Sloan Digital Sky Survey Data Release 7 , we explore influences of galaxy interactions on AGN activity. It is found that in the faint volume-limited sample, paired galaxies have a slightly higher AGN fraction than isolated galaxies, whereas in the luminous volume-limited sample, an opposite trend can be observed. The significance is <1σ. Thus, we do not observe strong evidence that interactions or mergers likely trigger the AGN activity.

The Mass Function of Void Galaxies in the Sloan Digital Sky Survey Data Release 2

2005 ◽  
Vol 621 (2) ◽  
pp. 643-650 ◽  
Author(s):  
David M. Goldberg ◽  
Timothy D. Jones ◽  
Fiona Hoyle ◽  
Randall R. Rojas ◽  
Michael S. Vogeley ◽  
...  
Keyword(s):  
Survey Data ◽  
Mass Function ◽  
Sloan Digital Sky Survey ◽  
Sky Survey ◽  
Void Galaxies ◽  
Data Release
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