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pro vyhledávání: '"Jacqueline Chen"'
Autor:
Jacqueline Chen
Publikováno v:
Astronomy & Astrophysics. 498:49-60
The amount of mass in small, dark matter clumps within galaxies (substructure) is an important test of cold dark matter. One approach to measuring the substructure mass fraction is to analyze the fluxes of images that have been strongly lensed by a g
Publikováno v:
The Astronomical Journal. 123:720-728
We present new interferometric HI and CO (1-0) observations of the luminous infrared source, Arp 256. Arp 256 consists of two spiral galaxies in an early stage of merging, with a projected nuclear separation of 29 kpc (54") and an infrared luminosity
Publikováno v:
The Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
arXiv
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
arXiv
The CXOCY J220132.8-320144 system consists of an edge-on spiral galaxy lensing a background quasar into two bright images. Previous efforts to constrain the mass distribution in the galaxy have suggested that at least one additional image must be pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d5697a0483abd90c35cf69eb286a018
http://arxiv.org/abs/1211.6449
http://arxiv.org/abs/1211.6449
Autor:
Jacqueline Chen
The spatial distribution of satellite galaxies around host galaxies can illuminate the relationship between satellites and dark matter subhalos and aid in developing and testing galaxy formation models. Previous efforts to constrain the distribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7ffd9f056303522e5d6d897799a4a74
Autor:
Jacqueline Chen
We explore the color dependence of the radial profile of satellite galaxies around isolated parent galaxies. Samples of potential satellites selected from large galaxy redshift surveys are significantly contaminated by interlopers -- objects not boun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c4181e8e3876bd4464a7d923f68b198
Multiply-imaged quasar lenses can be used to constrain the substructure mass fraction in galaxy-sized dark matter halos via anomalous flux ratios in lensed images. The flux ratios, however, can be affected by both the substructure in the lens halo an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8625b09291ffb311c34bda9436fb82da
http://arxiv.org/abs/astro-ph/0302005
http://arxiv.org/abs/astro-ph/0302005