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XMM-Newton
Kretschmar, Peter; González-Riestra, Rosario; Santos-Lleó, Maria +7 more
The X-ray Multi-mirror Mission (XMM-Newton) provides simultaneous non-dispersive spectroscopic X-ray imaging and timing, medium resolution dispersive X-ray spectroscopy and optical/UV imaging, spectroscopy and timing. In combination, the imaging cameras offer an effective area over the energy range from 150 eV to 12 keV of up to 2500 cm$^2$ at 1.5…
New Window on the Radio Emission from Galaxies, Clusters and Cosmic Web—Conference Summary
Venturi, Tiziana; Loi, Francesca
This manuscript summarizes the contributions presented and discussed during the conference "A new window on radio galaxies, clusters and cosmic web: current status and new challenges". The meeting was held online in March 2021. The works presented during the conference have been published in this associated Special Issue. Here, we outline the scie…
WHTZ 1: a high excitation Planetary Nebula not a gaseous cocoon from runaway star HD 185806
Parker, Quentin A.; Ritter, Andreas; Garde, Olivier +6 more
We present evidence that the nebular cocoon and bow-shock emission nebula putatively and recently reported as deriving from the 9th magnitude 'runaway' star HD 185806 is the previously discovered but obscure Planetary Nebula WHTZ 1 (Ra 7). It has a Gaia DR3 G~16 blue ionizing star at its geometric centre. We present imagery, spectroscopy, other da…
Mass of the Asteroid (7348) 1993FJ22 as Determined by the Dynamic Method
Kuznetsov, V. B.; Chernetenko, Yu. A.
—The mass of the asteroid (
Refining the Masses and Radii of the Star Kepler-33 and its Five Transiting Planets
Lissauer, Jack J.; Jontof-Hutter, Daniel; Sikora, James +1 more
Kepler-33 hosts five validated transiting planets ranging in period from 5 to 41 days. The planets are in nearly coplanar orbits and exhibit remarkably similar (appropriately scaled) transit durations indicative of similar impact parameters. The outer three planets have a radius of 3.5 ≲ R p/R ⊕ ≲ 4.7 and are closely packed d…
Indian Planetary Missions and Science
Bhardwaj, Anil
The planetary exploration program in India started in the new millennium with the launch of Chandrayaan-1 orbiter mission to the Moon in 2008, which was a highly successful mission since it discovered water on the Moon. The next Indian planetary mission was to Mars: the Mars Orbiter Mission (MOM), launched in November 2013 and arriving on Mars in …
Red giant branch bump brightness in 7 metal-poor globular clusters obtained with GAIA DR2
Nie, Jundan; Wu, Tao; Pietrinferni, Adriano +10 more
The identification of the red giant branch bump brightness in metal-poor globular clusters is important for low-mass stellar evolution. The release of Gaia DR2 prompted us to revisit the red giant branch bump (RGBB) in galactic globular clusters. We apply a popular nonparametric density estimation approach, kernel density estimation (KDE), to expl…
New late-type stars found in the BAO Plate Archive
Kostandyan, G. R.; Abrahamyan, H. V.; Paronyan, G. M. +1 more
The BAO Plate Archive low-resolution spectral plate centered \alpha = +04h; \delta = +240 is analyzed to find new late-type stars. 25 new late-type stars have been detected. We have performed cross-correlations with GAIA DR3, USNO-B1.0, 2MASS, AllWISE, IRAS PSC/FSC, AKARI and SDSS. For new detected objects, we present luminosity classes estimated …
Retrieval of Lunar Surface Temperature and Spectral Emissivity in 3-5 µm Range from Chandrayaan-2 IIRS Observations
Bhattacharya, S.; Ojha, S. P.; Vikram, K. V. N. G.
Algorithm for the retrieval of lunar surface temperature and emissivity is presented in this study.
Description and Application of the Surfing Effect
Nucita, Achille A.; De Paolis, Francesco; Maiorano, Michele
The standard technique for very low-frequency gravitational wave detection is mainly based on searching for a specific spatial correlation in the variation of the times of arrival of the radio pulses emitted by millisecond pulsars with respect to a timing model. This spatial correlation, which in the case of the gravitational wave background must …