234 citations · 985 across the 23 of their papers we have counts for
5 papers · 1 filter
Searching for planetary-mass T-dwarfs in the core of Serpens
L. Spezzi, C. Alves de Oliveira, E. Moraux +5
We searched for isolated planetary-mass T-dwarfs in the 3Myr old Serpens Core cluster. We performed a deep imaging survey of the central part of this cluster using the WIRCam camer…
A search for mass segregation of stars and brown dwarfs in ρ Ophiuchi
Richard J. Parker, Thomas Maschberger, Catarina Alves de Oliveira
We apply two different algorithms to search for mass segregation to a recent observational census of the rho Ophiuchi star forming region. Firstly, we apply the Lambda_MSR method,…
An unusual very low-mass high-amplitude pre-main sequence periodic variable
Maria V. Rodriguez-Ledesma, Reinhard Mundt, Mansur Ibrahimov +5
We have investigated the nature of the variability of CHS7797, an unusual periodic variable in the Orion Nebula Cluster. An extensive I-band photometric data set of CHS7797 was com…
The dusty environment of HD 97300 as seen by Herschel and Spitzer
Á. Kóspál, T. Prusti, N. L. J. Cox +9
Aims. We analyze the surroundings of HD 97300, one of two intermediate-mass stars in the Chamaeleon I star-forming region. The star is known to be surrounded by a conspicuous ring…
Spectroscopy of new brown dwarf members of rho Ophiuchi and an updated initial mass function
C. Alves de Oliveira, E. Moraux, J. Bouvier +1
To investigate the universality hypothesis of the initial mass function in the substellar regime, the population of the rho Ophiuchi molecular cloud is analysed by including a new…