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Concept

Asterism (astronomy)

Related publications (4)

The Dark Energy Survey: Data Release 1

Yi Zhang, Xin Chen, Eduardo Sanchez, Craig Matthew Smith, Jonathan Andrew Blazek, Aaron James Rossini, Jennifer Kaitlyn Olsen, Augusto Martins Lima, Josiane Angèle Charlotte Smith-Clerc, Vikram Vinayak Karve, Xi Chen, Juan Andrei Villarroel Fernandez, Vanda Carla Costa Grisel

We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations ...

IOP PUBLISHING LTD2018

The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: final emission line galaxy target selection

Yi Wang, Jean-Paul Richard Kneib, Anand Stéphane Raichoor, David Schlegel, Timothée Guy Olivier Delubac, Arjun Dey, Claudio Gorgoni

We describe the algorithm used to select the emission line galaxy (ELG) sample at z similar to 0.85 for the extended Baryon Oscillation Spectroscopic Survey of the Sloan Digital Sky Survey IV, using photometric data from the DECam Legacy Survey. Our select ...

Oxford Univ Press2017

The SDSS-IV eBOSS: emission line galaxy catalogues at z approximate to 0.8 and study of systematic errors in the angular clustering

Jean-Paul Richard Kneib, Xiaoqing Zhou, Anand Stéphane Raichoor, Timothée Guy Olivier Delubac

We present two wide-field catalogues of photometrically selected emission line galaxies (ELGs) at z approximate to 0.8 covering about 2800 deg(2)over the south galactic cap. The catalogues were obtained using a Fisher discriminant technique described in a ...

Oxford Univ Press2017

Membership and binarity of solar-type dwarfs in the nearby open cluster Alpha Persei (Mel 20)

Jean-Claude Mermilliod

Context. The Alpha Persei open cluster (Melotte 20) is one of the nearby clusters (d < 500 pc) for which a long-term systematic radial-velocity monitoring of the solar-type stars has not been published so far. ...

2008