1.5k citations · 3.9k across the 47 of their papers we have counts for
47 papers
Supermassive black hole wake or bulgeless edge-on galaxy? II: Order-of-magnitude analysis of the two physical scenarios
J. Sanchez Almeida
-- Context. A recently discovered thin long object aligned with a nearby galaxy could be the stellar wake induced by the passage of a supermassive black hole (SMBH) kicked out from…
Spatially-resolved chemodynamics of the starburst dwarf galaxy CGCG 007-025: Evidence for recent accretion of metal-poor gas
M. G. del Valle-Espinosa, R. Sanchez-Janssen, R. Amorin +4
Nearby metal-poor starburst dwarf galaxies present a unique opportunity to probe the physics of high-density star formation with a detail and sensitivity unmatched by any observati…
Hubble Space Telescope Observations of Tadpole Galaxies Kiso 3867, SBS0, SBS1, and UM461
Debra Meloy Elmegreen, Bruce G. Elmegreen, John S. Gallagher +8
Tadpole galaxies are metal-poor dwarfs with typically one dominant star-forming region, giving them a head-tail structure when inclined. A metallicity drop in the head suggests tha…
Discovery of faint double-peak Halpha emission in the halo of low redshift galaxies
J. Sanchez Almeida, J. Calhau, C. Munoz-Tunon +2
Aiming at the detection of cosmological gas being accreted onto galaxies of the local Universe, we examined the Halpha emission in the halo of 164 galaxies in the field of view of…
Evidence for the Accretion of Gas in Star-Forming Galaxies: High N/O Abundances in Regions of Anomalously-Low Metallicity
Yuanze Luo, Timothy Heckman, Hsiang-Chih Hwang +11
While all models for the evolution of galaxies require the accretion of gas to sustain their growth via on-going star formation, it has proven difficult to directly detect this inf…
Triaxiality can explain the alleged dark matter deficiency in some dwarf galaxies
J. Sanchez Almeida, M. Filho
Dark Matter (DM) is an ingredient essential to the current cosmological concordance model. It provides the gravitational pull needed for the baryons to form galaxies. Therefore, th…