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Variability of Disk Emission in Pre-Main Sequence and Related Stars. III. Exploring Structural Changes in the Pre-transitional Disk in HD 169142
Kevin R. Wagner, Michael L. Sitko, Carol A. Grady +17
We present near-IR and far-UV observations of the pre-transitional (gapped) disk in HD 169142 using NASA's Infrared Telescope Facility and Hubble Space Telescope. The combination o…
Cluster Formation Triggered by Filament Collisions in Serpens South
Fumitaka Nakamura, Koji Sugitani, Tomohiro Tanaka +24
The Serpens South infrared dark cloud consists of several filamentary ridges, some of which fragment into dense clumps. On the basis of CCS (), HCN (), N$_2…
High abundance ratio of CO to CO toward photon-dominated regions in the Orion-A giant molecular cloud
Yoshito Shimajiri, Yoshimi Kitamura, Masao Saito +11
Aims. We derive physical properties such as the optical depths and the column densities of CO and CO to investigate the relationship between the far ultraviolet (FUV)…
High-Resolution Submillimeter and Near-Infrared Studies of the Transition Disk around Sz 91
Takashi Tsukagoshi, Munetake Momose, Jun Hashimoto +55
To reveal the structures of a transition disk around a young stellar object in Lupus, Sz 91, we have performed aperture synthesis 345 GHz continuum and CO(3--2) observations with t…