Zobrazeno 1 - 10
of 1 070
pro vyhledávání: '"Dékány, I"'
We present a new set of tools to derive systemic velocities for single-mode RR~Lyrae stars from visual and near-infrared spectra. We derived scaling relations and line-of-sight velocity templates using both APOGEE and {\it Gaia} spectroscopic product
Externí odkaz:
http://arxiv.org/abs/2404.05279
We present a new set of period-absolute magnitude-metallicity (PMZ) relations for single-mode RR Lyrae stars calibrated for the optical $G_{\rm BP}$, $V$, $G$, $G_{\rm RP}$, near-infrared $I$, $J$, $H$, and $K_{\rm s}$ passbands. We compiled a large
Externí odkaz:
http://arxiv.org/abs/2310.19438
Publikováno v:
A&A 664, A47 (2022)
CONTEXT: Thermal emission from extrasolar planets makes it possible to study important physical processes in their atmospheres and derive more precise orbital elements. AIMS: By using new near infrared and optical data, we examine how these data cons
Externí odkaz:
http://arxiv.org/abs/2204.01137
Publikováno v:
A&A 635, A66 (2020)
We present the most extended and homogeneous study carried out so far of the main and early shocks in 1485 RR~Lyrae stars in the Galactic bulge observed by the Optical Gravitational Lensing Experiment (OGLE). We selected non-modulated fundamental-mod
Externí odkaz:
http://arxiv.org/abs/2001.08272
Autor:
Lucas, P. W., Minniti, D., Kamble, A., Kaplan, D. L., Cross, N., Dekany, I., Ivanov, V. D., Kurtev, R., Saito, R. K., Smith, L. C., Catelan, M., Masetti, N., Toledo, I., Hempel, M., Thompson, M. A., Peña, C. Contreras, Forbrich, J., Krause, M., Dale, J., Borissova, J., Emerson, J.
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 ($H-K_s=5.2$). It peaked before March 2010, then faded by $\sim$9.5 mag over the following two years. The 1
Externí odkaz:
http://arxiv.org/abs/2001.05536
We present a kinematical study of 314 RR~Lyrae stars in the solar neighbourhood using the publicly available photometric, spectroscopic, and {\it Gaia} DR2 astrometric data to explore their distribution in the Milky Way. We report an overdensity of 2
Externí odkaz:
http://arxiv.org/abs/2001.02486
We present a kinematical study of RR~Lyrae stars associated with two Oosterhoff groups in the Galactic bulge. We used data published in the first paper of the series, plus proper motions from the {\it Gaia} Data Release 2, and radial velocities from
Externí odkaz:
http://arxiv.org/abs/1905.11870
We present a study of the Oosterhoff (Oo) dichotomy in the Galactic bulge using 8\,141 fundamental mode RR~Lyrae stars. We used public photometric data from the Optical Gravitational Lensing Experiment (OGLE) and the Vista Variables in the V\'ia L\'a
Externí odkaz:
http://arxiv.org/abs/1901.09726
We present a study of a recently discovered stellar overdensity near the northern edge of the Small Magellanic Cloud (SMCNOD). We exploited variable stars from the fourth release of the Optical Gravitational Lensing Experiment (OGLE). We used mainly
Externí odkaz:
http://arxiv.org/abs/1809.06087
This study's objective was to exploit infrared VVV (VISTA Variables in the Via Lactea) photometry for high latitude RRab stars to establish an accurate Galactic Centre distance. RRab candidates were discovered and reaffirmed ($n=4194$) by matching $K
Externí odkaz:
http://arxiv.org/abs/1805.04119