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16 papers · 2 filters
Clues to PPN Chemical Evolution: The Unique Molecular Environment of V510 Pup
Mark A. Siebert, Anthony J. Remijan
V510 Pup (IRAS 08005-2356) is a binary post-AGB system with a fast molecular outflow that has been noted for its puzzling mixture of carbon- and oxygen-rich features in the optical…
Near-Infrared Observations of Outflows and YSOs in the Massive Star-Forming Region AFGL 5180
S. Crowe, R. Fedriani, J. C. Tan +30
Methods: Broad- and narrow-band imaging of AFGL 5180 was made in the NIR with the LBT, in both seeing-limited ($\sim0.5\arcsec$) and high angular resolution ($\sim0.09\arcsec$) Ada…
Linking ice and gas in the Coronet cluster in Corona Australis
G. Perotti, J. K. Jørgensen, W. R. M. Rocha +7
During the journey from the cloud to the disc, the chemical composition of the protostellar envelope material can be either preserved or processed to varying degrees depending on t…
Long-period maser-bearing Miras in the Galactic center: period-luminosity relations and extinction estimates
M. O. Lewis, R. Bhattacharya, L. O. Sjouwerman +5
We establish a sample of 370 Mira variables that are likely near the Galactic center (GC). The sources have been selected from the OGLE and BAaDE surveys based on their sky coordin…
The Radial Distribution and Excitation of H2 around Young Stars in the HST-ULLYSES Survey
Kevin France, Nicole Arulanantham, Erin Maloney +8
The spatial distribution and evolution of gas in the inner 10 au of protoplanetary disks form the basis for estimating the initial conditions of planet formation. Among the most im…
Variability in SSTc2d J163134.1-240100, a brown dwarf with quasi-spherical mass loss
Aleks Scholz, Koraljka Muzic, Victor Almendros-Abad +4
We report on a search for variability in the young brown dwarf SST1624 (~M7 spectral type, M~0.05Msol), previously found to feature an expanding gaseous shell and to undergo quasi-…