45 citations · 322 across the 19 of their papers we have counts for
3 papers · 1 filter
A spectroscopic census in young stellar regions: the Sigma Orionis cluster
Jesús Hernández, Nuria Calvet, Alice Perez +7
We present a spectroscopic survey of the stellar population of the Sigma Orionis cluster. We have obtained spectral types for 340 stars. Spectroscopic data for spectral typing come…
The low mass star and sub-stellar populations of the 25 Orionis group
Juan José Downes, César Briceño, Cecilia Mateu +6
We present the results of a survey of the low mass star and brown dwarf population of the 25 Orionis group. Using optical photometry from the CIDA Deep Survey of Orion, near IR pho…
Automorphism groups of simplicial complexes of infinite type surfaces
Jesús Hernández Hernández, José Ferrán Valdez Lorenzo
Let S be any orientable surface of infinite genus with a finite number of boundary components. In this work we consider the curve complex C(S), the nonseparating curve complex N(S)…