- UHRA Home
- Browsing by Author
Browsing by Author "Medina, N."
Now showing items 1-7 of 7
-
Discovery of a mid-infrared protostellar outburst of exceptional amplitude
Lucas, P. W.; Elias, Jay; Points, Sean; Guo, Z.; Stecklum, B.; Vorobyov, E.; Morris, C.; Borissova, J.; Kurtev, R.; Pena, C. Contreras; Medina, N.; Minniti, D.; Ivanov, V. D.; Saito, R. K. (2020-09-23)We report the discovery of a mid-infrared outburst in a Young Stellar Object (YSO) with an amplitude close to 8 mag at lambda ~ 4.6 microns. WISEA J142238.82-611553.7 is one of 23 highly variable WISE sources discovered ... -
Long-term Stellar Variability in the Galactic Centre Region
Molina, C. Navarro; Borissova, J.; Catelan, M.; Lucas, P. W.; Medina, N.; Pena, C. Contreras; Kurtev, R.; Minniti, D. (2019-02)We report the detection of variable stars within a 11.5' x 11.5' region near the Galactic centre (GC) that includes the Arches and Quintuplet clusters, as revealed by the VISTA Variables in the Via Lactea (VVV) survey. ... -
Near-infrared photometry and spectroscopy of the low Galactic latitude globular cluster 2MASS-GC03
Carballo-Bello, Julio A.; Alegria, S. Ramirez; Borissova, J.; Smith, L. C.; Kurtev, R.; Lucas, P. W.; Bidin, Ch Moni; Alonso-Garcia, J.; Minniti, D.; Palma, T.; Dekany, I.; Medina, N.; Moyano, M.; Villanueva, V.; Kuhn, M. A. (2016-10-11)We present deep near-infrared photometry and spectroscopy of the globular cluster 2MASS-GC03 projected in the Galactic disk using MMIRS on the Clay telescope (Las Campanas Observatory) and VISTA Variables in the Via Lactea ... -
New Galactic star clusters discovered in the disc area of the VVVX survey
Borissova, J.; Ivanov, V. D.; Lucas, P. W.; Kurtev, R.; Alonso-Garcia, J.; Alegria, S. Ramirez; Minniti, D.; Hempel, M.; Medina, N.; Chene, A. N.; Kuhn, M. A. (2018-12-11)The "VISTA Variables in the Via Lactea eXtended (VVVX)" ESO Public Survey is a near-infrared photometric sky survey that covers nearly 1700 sq. deg towards the Galactic disk and bulge. It is well-suited to search for new ... -
Small scale star formation as revealed by VVVX galactic cluster candidates
Borissova, J.; Kurtev, R.; Amarinho, N.; Alonso-Garcia, J.; Alegria, S. Ramirez; Bernal, S.; Medina, N.; Chene, A. -N.; Ivanov, V. D.; Lucas, P. W.; Minniti, D. (2020-10-02)We report a search and analysis of obscured cluster candidates in the "VISTA Variables in the Via Lactea eXtended (VVVX)" ESO Public Survey area encompassing the region between 229.4 < l <295.2 and -4.3 < b <4.4 of the ... -
Variable Stars in the Quintuplet stellar cluster with the VVV Survey
Molina, C. Navarro; Borissova, J.; Catelan, M.; Alonso-García, J.; Kerins, E.; Kurtev, R.; Lucas, P. W.; Medina, N.; Minniti, D.; Dékány, I. (2016-10-21)The Quintuplet cluster is one of the most massive star clusters in the Milky Way, situated very close to the Galactic center. We present a new search for variable stars in the vicinity of the cluster, using the five-year ... -
Young Stellar Clusters Containing Massive Young Stellar Objects in the VVV Survey
Borissova, J.; Alegría, S. Ramírez; Alonso, J.; Lucas, P. W.; Kurtev, R.; Medina, N.; Navarro, C.; Kuhn, M.; Gromadzki, M.; Retamales, G.; Fernandez, M. A.; Agurto-Gangas, C.; Chené, A. -N.; Minniti, D.; Peña, C. Contreras; Catelan, M.; Decany, I.; Thompson, M. A.; Morales, E. F. E.; Amigo, P. (2016-09-06)The purpose of this research is to study the connection of global properties of eight young stellar clusters projected in the Vista Variables in the Via Lactea (VVV) ESO Large Public Survey disk area and their young stellar ...