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J-PLUS: Unveiling the brightest-end of the Lyα luminosity function at 2.0<z<3.3 over 1000 deg^2
Daniele Spinoso, Alvaro Orsi, Carlos López-Sanjuan +21
We present the photometric determination of the bright-end (L_Lya>10^43.5 erg/s) of the Lya luminosity function (LF) within four redshifts windows in the interval 2.2<z<3.3. Our wo…
Asymmetric Surface Brightness Structure of Caustic Crossing Arc in SDSS J1226+2152: A Case for Dark Matter Substructure
Liang Dai, Alexander A. Kaurov, Keren Sharon +6
We study the highly magnified arc SGAS J122651.3+215220 caused by a star-forming galaxy at crossing the lensing caustic cast by the galaxy cluster SDSS J1226+2152 ($z_l=…
Statistical detection of a tidal stream associated with the globular cluster M68 using Gaia data
C. G. Palau, J. Miralda-Escudé
A method to search for tidal streams and to fit their orbits based on maximum likelihood is presented and applied to the Gaia data. Tests of the method are performed showing how a…
Highly Magnified Stars in Lensing Clusters: New Evidence in a Galaxy Lensed by MACS J0416.1-2403
Alexander A. Kaurov, Liang Dai, Tejaswi Venumadhav +2
We examine a caustic-straddling arc at in the field of the galaxy cluster MACS J0416.1-2403 () using archival multiband HST images and show that its surface bri…
Origin of Metals around Galaxies I: Catalogs of Metal-line Absorption Doublets from High-Resolution Quasar Spectra
Lluís Mas-Ribas, Signe Riemer-Sørensen, Joseph F. Hennawi +5
We present the first paper of the series Origin of Metals around Galaxies (OMG) aimed to study the origin of the metals observed in the circumgalactic and intergalactic media. In t…
Absorption by Spinning Dust: a Contaminant for High-Redshift 21 cm Observations
B. T. Draine, Jordi Miralda-Escudé
Spinning dust grains in front of the bright Galactic synchrotron background can produce a weak absorption signal that could affect measurements of high redshift 21 cm absorption. A…