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Model-driven environment for configuration control and deployment of on-board satellite software
Carrasco, Alberto; Martínez, Agustín; Sánchez, Sebastián +3 more
This paper describes a model-driven environment for configuration control and deployment of on-board satellite software. The solution enables platform-aware software development through the use of modelling artefacts provided by a framework called MICOBS. The paper describes the proposed platform model, as well as the supporting models needed to c…
The Energy Conversion Rate of an Active Region Transient Brightening Estimated by Hinode Spectroscopic Observations
Imada, Shinsuke; Kawai, Toshiki
We statistically estimate the conversion rate of the energy released during an active region transient brightening to Doppler motion and thermal and nonthermal energies. We used two types of data sets for the energy estimation and detection of transient brightenings. One includes spectroscopic images of Fe XIV, Fe XV, and Fe XVI lines observed by …
Photometric Variability of the Pre-main-sequence Stars toward the Sh 2-190 Region
Matsunaga, N.; Sharma, Saurabh; Panwar, Neelam +7 more
We present the results from our time-series imaging data taken with the 1.3 m Devasthal fast optical telescope and 0.81 m Tenagara telescope in V, Rc, and Ic bands covering an area of ~18'4 × 18'4 toward the star-forming region Sh 2-190. This photometric data helped us to explore the nature of the variability of pre-main-sequ…
Impacts of the PAH size and the radiation intensity on the IR features of illuminated dust within the reflection nebulae
Gadallah, Kamel A. K.; Ali, Abdallah A. M.
Interstellar dust grains are illuminated in the reflection nebulae. Under conditions of the PAH size and the intensity of the interstellar radiation field, we follow their impact on the PAH aromatic infrared bands using the numerical DustEM code. For a dust model consisting of PAH, amorphous C and amorphous silicate, the PAH size varies in a range…
X-ray analysis of the Planck-detected triplet-cluster system PLCK G334.8-38
Pointecouteau, Etienne; Douspis, Marian; Aghanim, Nabila +2 more
We conducted an X-ray analysis of one of the two Planck-detected triplet-cluster systems, PLCK G334.8-38.0, with a ∼100 ks deep XMM-Newton data. We find that the system has a redshift of z = 0.37 ± 0.01 but the precision of the X-ray spectroscopy for two members is too low to rule out a projected triplet system, demanding optical spectroscopy for …
Extensive glaciation in the Erebus Montes region of Mars
Sinha, Rishitosh K.; Ray, Dwijesh
Lobate debris apron (LDA) in the Mars' mid-latitudes substantiate extensive glaciation during the Late Amazonian. Detailed investigation of these landforms is imperative because different areas distributed at different latitudes, distinct geologic settings and varied regional topography may have responded to climate in different ways. In this stud…
Assessing the potential of cluster edges as a standard ruler on constraining dark energy models
Wang, Deng
We assess comprehensively the potential of galaxy cluster edges as a standard ruler in measuring cosmological distances and probing exotic physics. Confronting five alternative cosmological models with cluster edges from the near-future Dark Energy Spectroscopic Instrument survey, we conclude that cluster edges can serve as a promising probe to co…
Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange
González, J. F.; Mennickent, R. E.; Cabezas, M. +5 more
We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of Po = 2.0084530(6) days. Our spectra reveal Hβ and Hα absorptions with weak emission shoulders, and we also find a color excess in the Wide-field Infrared Survey Ex…
Exploration of the Origin of Galactic and Extragalactic Star Clusters through Simulated H-R Diagrams
Chattopadhyay, Tanuka; Mondal, Sreerup; Paul, Suman +2 more
The present work explores the origin of the formation of star clusters in our Galaxy and in the Small Magellanic Cloud (SMC) through simulated H-R diagrams and compare those with observed star clusters. The simulation study produces synthetic H-R diagrams through the Markov Chain Monte Carlo (MCMC) technique using the star formation history (SFH),…
The Dark Side of Pluto
White, Oliver L.; Bertrand, Tanguy; McKinnon, William B. +10 more
During its departure from Pluto, New Horizons used its LORRI camera to image a portion of Pluto's southern hemisphere that was in a decades-long seasonal winter darkness, but still very faintly illuminated by sunlight reflected by Charon. Recovery of this faint signal was technically challenging. The bright ring of sunlight forward-scattered by ha…