409 citations · 899 across the 23 of their papers we have counts for
13 papers · 1 filter
Photometric [Fe/H] of RRab stars in the and bands by deep learning
István Dékány, Eva K. Grebel
RR Lyrae stars are useful chemical tracers thanks to the empirical relationship between their heavy-element abundance and the shape of their light curves. However, the consistent a…
VVV-WIT-01: highly obscured classical nova or protostellar collision?
P. W. Lucas, D. Minniti, A. Kamble +18
A search of the first Data Release of the VISTA Variables in the Via Lactea (VVV) Survey discovered the exceptionally red transient VVV-WIT-01 (). It peaked before March…
Evidence for Galactic disc RR~Lyrae stars in the Solar neighbourhood
Z. Prudil, I. Dékány, E. K. Grebel +1
We present a kinematical study of 314 RR~Lyrae stars in the solar neighbourhood using the publicly available photometric, spectroscopic, and {\it Gaia} DR2 astrometric data to expl…
On the Oosterhoff dichotomy in the Galactic bulge: II. kinematical distribution
Z. Prudil, I. Dékány, E. K. Grebel +3
We present a kinematical study of RR~Lyrae stars associated with two Oosterhoff groups in the Galactic bulge. We used data published in the first paper of the series, plus proper m…
Blazhko modulation in the infrared
J. Jurcsik, G. Hajdu, I. Dékány +3
We present first direct evidence of modulation in the -band of Blazhko-type RR Lyrae stars that are identified by their secular modulations in the I-band data of OGLE-IV. A meth…
Near-IR period-luminosity relations for pulsating stars in Centauri (NGC 5139)
C. Navarrete, M. Catelan, R. Contreras Ramos +4
Centauri (NGC 5139) hosts hundreds of pulsating variable stars of different types, thus representing a treasure trove for studies of their corresponding period-luminosity (PL)…