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Spitzer observations of the Orion OB1 association: disk census in the low mass stars
Jesus Hernandez, Nuria Calvet, C. Briceno +6
We present new Spitzer Space Telescope observations of two fields in the Orion OB1 association. We report here IRAC/MIPS observations for 115 confirmed members and 41 photometric c…
Searching for RR Lyrae stars in the Canis Major Overdensity
Cecilia Mateu, A. Katherina Vivas, Robert Zinn +2
The Canis Major overdensity (CMa) was initially proposed to be the remnant of a tidally disrupting dSph galaxy. Since its nature is still subject of debate, the goal of the present…
25 Orionis: A Kinematically Distinct 10 Myr Old Group in Orion OB1a
Cesar Briceno, Lee Hartmann, Jesus Hernandez +4
We report here on the photometric and kinematic properties of a well defined group of nearly 200 low-mass pre-main sequence stars, concentrated within ~ 1 deg of the early-B star 2…
Spitzer Space Telescope study of disks in the young Orionis cluster
Jesus Hernandez, L. Hartmann, T. Megeath +9
We report new Spitzer Space Telescope observations from the IRAC and MIPS instruments of the young (~ 3 Myr) sigma Orionis cluster. We identify 336 stars as members of the cluster…