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Investigating the Physical Conditions in Extended System Hosting Mid-infrared Bubble N14
Dewangan, L. K.; Ojha, D. K.; Baug, T. +1 more
To observationally explore physical processes, we present a multiwavelength study of a wide-scale environment toward l = 13°7-14°9 containing a mid-infrared bubble N14. The analysis of 12CO, 13CO, and C18O gas at [31.6, 46] km s-1 reveals an extended physical system (extension ∼59 pc × 29 pc), which host…
Using the Modified Lognormal Power-law Distribution to Model the Mass Function of NGC 1711
Basu, Shantanu; Madaan, Deepakshi; Lianou, Sophia
A determination of the mass function (MF) of stellar clusters can be quite dependent on the range of measured masses, the fitting technique, and the analytic function that is being fit to the data. Here, we use Hubble Space Telescope/WFPC2 data of NGC 1711, a stellar cluster in the Large Magellanic Cloud, as a test case to explore a range of possi…
The Molecular Outflow from R Mon
Güsten, R.; Sandell, Göran; Vacca, W. +1 more
We have mapped the young Herbig Be star R Mon in CO(3-2) and 13CO(3-2) with Atacama Pathfinder EXperiment in Chile and analyzed unpublished Herschel images. We find that R Mon is embedded in a small cloud with a gas temperature of ∼20 K and a total mass of ∼70 ${M}_{\odot }$ . We confirm that R Mon drives a bipolar molecular outflow, wh…
Detection of Periodicity in SiO Maser Intensity and Velocity Shift of the Symbiotic Star CH Cyg
Kim, Dong-Jin; Kim, Jaeheon; Cho, Se-Hyung +3 more
We performed simultaneous monitoring observations of H2O 616-523 and SiO V = 1, 2, $J=1\to $ 0, SiO V = 1, $J=2\to $ 1, $3\to 2$ maser lines toward the symbiotic star CH Cyg from 2012 December to 2019 November using the Korean very long baseline interferometry Network single-dish telescope. SiO V = 1, 2, $J=1\to 0$…
Quasiperiodic Velocity Fluctuations in Eruptive Prominences Observed by AIA/SDO
Tsvetkov, Tsvetan; Petrov, Nikola
The current study presents an investigation of the behavior of prominences during eruptions. Variations in the distribution of their velocities are detected at altitudes <0.6 R⊙. Detailed analyses are carried out for 304 Å Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA) observations. To track the behavior of promine…
Absolute Dimensions of the Unevolved F-type Eclipsing Binary BT Vulpeculae
Torres, Guillermo; Fekel, Francis C.; Muterspaugh, Matthew W. +1 more
We report extensive differential V-band photometry and high-resolution spectroscopy for the 1.14 day, detached, double-lined eclipsing binary BT Vul (F0+F7). Our radial-velocity monitoring and light-curve analysis lead to absolute masses and radii of ${M}_{1}=1.5439\pm 0.0098\,{{ \mathcal M }}_{\odot }^{{\rm{N}}}$ and ${R}_{1}=1.536\pm 0.018\,{{ \…