Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Vera Kozhurina-Platais"'
Autor:
Dana I. Casetti-Dinescu, Marcel S. Pawlowski, Terrence M. Girard, Kosuke Jamie Kanehisa, Alexander Petroski, Max Martone, Vera Kozhurina-Platais, Imants Platais
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 138 (2024)
We measure the absolute proper motion of Andromeda III (And III) using Advanced Camera for Surveys/Wide Field Channel and WFPC2 exposures spanning an unprecedented 22 yr time baseline. The WFPC2 exposures have been processed using a deep-learning cen
Externí odkaz:
https://doaj.org/article/f30a2c88a48345009bac37e6cb6496c2
Autor:
Imants Platais, Johannes Sahlmann, Léo Girardi, Vera Kozhurina-Platais, Sebastian Kamann, Dimitri Pourbaix, Florence Wragg, Gerard Lemson, Arik Mitschang
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 60 (2024)
We present results from the search for astrometric accelerations of stars in ω Centauri using 13 yr of regularly scheduled Hubble Space Telescope WFC3/UVIS calibration observations in the cluster core. The high-precision astrometry of ∼160,000 sou
Externí odkaz:
https://doaj.org/article/bef4135edeed4ba689eede401438b19e
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 68 (2023)
Externí odkaz:
https://doaj.org/article/b7257ace01a64505bf2dad1719df9fe3
Publikováno v:
The Astrophysical Journal, Vol 939, Iss 1, p 38 (2022)
This paper presents improved constraints on the low-mass stellar initial mass function (IMF) of the Boötes I (Boo I) ultrafaint dwarf galaxy, based on our analysis of recent deep imaging from the Hubble Space Telescope. The identification of candida
Externí odkaz:
https://doaj.org/article/f03d6d5bc27b41779621ac2054f3dce8
Autor:
Annalisa Calamida, Varun Bajaj, Jennifer Mack, Mariarosa Marinelli, Jennifer Medina, Aidan Pidgeon, Vera Kozhurina-Platais, Clare Shanahan, Debopam Som
We present a new photometric calibration of the WFC3-UVIS and WFC3-IR detectors based on observations collected from 2009 to 2020 for four white dwarfs, namely GRW+70~5824, GD~153, GD~71, G191B2B, and a G-type star, P330E. These calibrations include
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::463ce8076b9d5ef2dd5a3e2e5af67a6d
http://arxiv.org/abs/2205.13014
http://arxiv.org/abs/2205.13014
We present an analysis of new extremely deep images of the resolved stellar population of the Bo\"otes I ultra faint dwarf spheroidal galaxy. These new data were taken with the Hubble Space Telescope, using the Advanced Camera for Surveys (Wide Field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d786aad52541b5c172fa0bab22e2f97
http://arxiv.org/abs/2008.06089
http://arxiv.org/abs/2008.06089
Autor:
Imants Platais, Mario Gennaro, G. Strampelli, David R. Soderblom, Vera Kozhurina-Platais, Lynne A. Hillenbrand, Massimo Robberto, Andrea Bellini, Selma E. de Mink
Publikováno v:
Astrophysical Journal, 159(6):272. IOP Publishing Ltd.
We present a catalog of high-precision proper motions in the Orion Nebula Cluster (ONC), based on Treasury Program observations with the Hubble Space Telescope's (HST) ACS/WFC camera. Our catalog contains 2454 objects in the magnitude range of 14.2 m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f89741e3b5e2878528b96587650862b
https://resolver.caltech.edu/CaltechAUTHORS:20200522-111357263
https://resolver.caltech.edu/CaltechAUTHORS:20200522-111357263
Autor:
S. Martocchia, Marina Rejkuba, Maurizio Salaris, N. Kacharov, Stefan Dreizler, Sebastian Kamann, Nate Bastian, Christopher Usher, S. Saracino, Vera Kozhurina-Platais, S. S. Larsen, Carmela Lardo, Imants Platais, S. Mancino, I. Cabrera-Ziri, M. Latour
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 499, 1200-1211
Monthly Notices of the Royal Astronomical Society, 499, 1, pp. 1200-1211
Monthly Notices of the Royal Astronomical Society, 499, 1, pp. 1200-1211
Ancient ($>$10 Gyr) globular clusters (GCs) show chemical abundance variations in the form of patterns among certain elements, e.g. N correlates with Na and anti-correlates with O. Recently, N abundance spreads have also been observed in massive star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d415bb69cce160933c510b892bf80408
http://hdl.handle.net/11585/789200
http://hdl.handle.net/11585/789200
Autor:
Dana I. Casetti-Dinescu, Caitlin K. Hansen, Terrence M. Girard, Vera Kozhurina-Platais, Imants Platais, Elliott P. Horch
Publikováno v:
The Astronomical Journal. 163:1
We measure the absolute proper motion of Leo I using a WFPC2/HST data set that spans up to 10 yr to date the longest time baseline utilized for this satellite. The measurement relies on ∼2300 Leo I stars located near the center of light of the gala
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c4ea5f5a3dc016cad2d76f22774e4f1
https://doi.org/10.3847/1538-3881/ac30dc
https://doi.org/10.3847/1538-3881/ac30dc
Autor:
Jay Anderson, Terrence M. Girard, Vera Kozhurina-Platais, Dana I. Casetti-Dinescu, Elliott P. Horch, Imants Platais
Publikováno v:
Publications of the Astronomical Society of the Pacific. 133:064505
Wide field planetary camera 2 (WFPC2) exposures are already some 20 years older than Gaia epoch observations, or future JWST observations. As such, they offer an unprecedented time baseline for high-precision proper-motion studies, provided the full
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acea3a1c2b7cb64154c3f60611f99280
https://doi.org/10.1088/1538-3873/abf32c
https://doi.org/10.1088/1538-3873/abf32c