Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Martín Chalela"'
A trending astronomical phenomenon to study is the variation in brightness of asteroids, caused by its rotation on its own axis, non-spherical shapes, changes of albedo along its surface and its position relative to the sun. The latter behaviour can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ed8cdeb26142aaeb2b6ee7302f978a8
Autor:
Diego G. Lambas, Facundo Rodriguez, Manuel Merchán, Huanyuan Shan, Maria E. S. Pereira, Martin Makler, Elizabeth Johana Gonzalez, Martín Chalela, Bruno Moraes
Galaxy group masses are important to relate these systems with the dark matter halo hosts. However, deriving accurate mass estimates is particularly challenging for low-mass galaxy groups. Moreover, calibration of bservational mass-proxies using weak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38d8764cd6c82ee6ce011b844fc17ee8
Autor:
Diego G. Lambas, Thomas Erben, Martin Makler, Elizabeth Johana Gonzalez, Huanyuan Shan, Maria E. S. Pereira, Martín Chalela, Ludovic Van Waerbeke
In this work we study the shape of the projected surface mass density distribution of galaxy clusters using weak-lensing stacking techniques. In particular, we constrain the average aligned component of the projected ellipticity, $\epsilon$, for a sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e51ec0da363f0698d37616dc1e65f0a4
http://arxiv.org/abs/2006.08651
http://arxiv.org/abs/2006.08651
Autor:
Elizabeth Johana Gonzalez, Jose M. Diego, Anton M. Koekemoer, Charles L. Steinhardt, Mathilde Jauzac, Anna Niemiec, Thomas Connor, J. D. Remolina González, David J. Barnes, Douglas Clowe, Martín Chalela, David Harvey, Dominique Eckert, Matthieu Schaller
Publikováno v:
Gonzalez, E J, Chalela, M, Jauzac, M, Eckert, D, Schaller, M, Harvey, D, Niemiec, A, Koekemoer, A M, Barnes, D, Clowe, D, Connor, T, Diego, J M, Remolina Gonzalezm, J D & Steinhardt, C L 2020, ' Setting the scene for BUFFALO : a study of the matter distribution in the HFF galaxy cluster MACS J0416.1-2403 and its parallel fie ', Monthly Notices of the Royal Astronomical Society, vol. 494, no. 1, pp. 349-362 . https://doi.org/10.1093/mnras/staa745
Digital.CSIC. Repositorio Institucional del CSIC
instname
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Monthly Notices of the Royal Astronomical Society
Digital.CSIC. Repositorio Institucional del CSIC
instname
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Monthly Notices of the Royal Astronomical Society
In the context of the Beyond Ultradeep Frontier Fields And Legacy Observations (BUFFALO) survey, we present a new analysis of the merging galaxy cluster MACS J0416.1−2403 (z = 0.397) and its parallel field using Hubble Frontier Fields (HFF) data. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed07e90303a99be63da268ae95a14b4b
https://curis.ku.dk/ws/files/252676113/staa745.pdf
https://curis.ku.dk/ws/files/252676113/staa745.pdf
Autor:
Emanuel Sillero, Manuel Merchán, Juan B. Cabral, Martín Chalela, Mario Alejandro García, Marcelo Lares, Luis Pereyra
Publikováno v:
Astronomy and Computing. 34:100443
We present a new regular grid search algorithm for quick fixed-radius nearest-neighbor lookup developed in Python. This module indexes a set of k-dimensional points in a regular grid, with optional periodic conditions, providing a fast approach for n
Autor:
Ana Laura O'Mill, Elizabeth Johana Gonzalez, Martin Makler, Martín Chalela, Diego G. Lambas, Maria E. S. Pereira, Huanyuan Shan
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
In this work we present a lensing study of Compact Groups (CGs) using data obtained from the high quality Canada-France-Hawaii Telescope Stripe 82 Survey. Using stacking techniques we obtain the average density contrast profile. We analyse the lensin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::890b3776e1640604d39232540751036e
https://academic.oup.com/mnras/article-abstract/479/1/1170/5035847?redirectedFrom=fulltext
https://academic.oup.com/mnras/article-abstract/479/1/1170/5035847?redirectedFrom=fulltext
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We present a weak lensing analysis of a sample of SDSS Compact Groups (CGs). Using the measured radial density contrast profile, we derive the average masses under the assumption of spherical symmetry, obtaining a velocity dispersion for the Singular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3157839ecadfb0a9e48ed2fc1310d55
Autor:
Martín Chalela, Diego G. Lambas, Facundo Rodriguez, Manuel Merchán, G. Foëx, Elizabeth Johana Gonzalez
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We study the mass-richness relation using galaxy catalogues and images from the Sloan Digital Sky Survey. We use two independent methods, in the first one, we calibrate the scaling relation with weak-lensing mass estimates. In the second procedure we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bdebaaf4136622ebad9329df43bd2f8
http://arxiv.org/abs/1610.09383
http://arxiv.org/abs/1610.09383