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Herschel SPIRE-FTS observations of RCW 120
Abergel, A.; Le Bourlot, J.; Le Petit, F. +5 more
Context. The expansion of Galactic H ii regions can trigger the formation of a new generation of stars. However, little is know about the physical conditions that prevail in these regions.
Aims: We study the physical conditions that prevail in specific zones towards expanding H ii regions that trace representative media such as the photodisso…
Broad Balmer Wings in BA Hyper/Supergiants Distorted by Diffuse Interstellar Bands: Five Examples in the 30 Doradus Region from the VLT-FLAMES Tarantula Survey
Walborn, Nolan R.; Sana, Hugues; Ulaczyk, Krzysztof +11 more
Extremely broad emission wings at Hβ and Hα have been found in VLT-FLAMES Tarantula Survey data for five very luminous BA supergiants in or near 30 Doradus in the Large Magellanic Cloud. The profiles of both lines are extremely asymmetrical, which we have found to be caused by very broad diffuse interstellar bands (DIBs) in the longward wing of Hβ…
Sample of optically unidentified X-ray binaries in the Galactic bulge: constraints on the physical nature from infrared photometric surveys
Zolotukhin, Ivan Yu.; Revnivtsev, Mikhail G.
We report on archival near-infrared and mid-infrared observations of seven persistent X-ray sources situated in the Galactic bulge, using data from the UK Infrared Telescope (UKIRT) Infrared Deep Sky Survey (UKIDSS), the Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) and the Wide-field Infrared Survey Explorer (WISE) al…
Water production rate of comet C/1997 H2 (SOHO) near perihelion
Mancuso, Salvatore
Comet C/1997 H2 is a non-Kreutz comet that was observed near perihelion at 0.137 AU on 1997 May 2 with the Ultraviolet Coronagraph Spectrometer (UVCS) aboard the Solar and Heliospheric Observatory (SOHO) satellite. The observed H i Lyman α radiance profile at 1215.67 Å, which was obtained during the crossing of the cometary coma through the UVCS s…
The Three-dimensional Orbit and Physical Parameters of 47 Oph
Wang, Xiaoli; Ren, Shulin; Fu, Yanning +1 more
Although 47 Oph has been shown to be a binary with a period of ∼27 days using both spectroscopic and interferometric techniques, only a preliminary orbit has been obtained in the previous work due to the shortage of high precision measurements. Since 1997, new spectroscopic and interferometric measurements have been obtained with much higher preci…
Unbiased Correction Relations for Galaxy Cluster Properties Derived from Chandra and XMM-Newton
Zhao, Hai-Hui; Jia, Shu-Mei; Chen, Yong +2 more
We use a sample of 62 clusters of galaxies to investigate the discrepancies between the gas temperature and total mass within r 500 from XMM-Newton and Chandra data. Comparisons of the properties show that (1) both the de-projected and projected temperatures determined by Chandra are higher than those of XMM-Newton and there is a good l…
Hydraulic modeling of the tributary and the outlet of a Martian paleolake located in the Memnonia quadrangle
Pajola, M.; Baratti, E.; Rossato, S. +4 more
We present a steady state hydraulic model of the tributary and the outlet of a Martian paleolake located in the Memnonia quadrangle between 167°0'0''W and 167°30'0''W longitude and between 9°25'0''S and 9°45'0''S latitude. The Mars Express High-resolution stereo camera (HRSC) digital elevation model, H31850000DA4, with a spatial resolution of 75 m…
Principal component analysis of the reionization history from Planck 2015 data
Cai, Rong-Gen; Guo, Zong-Kuan; Dai, Wei-Ming
The simple assumption of an instantaneous reionization of the Universe may bias estimates of cosmological parameters. In this paper a model-independent principal component method for the reionization history is applied to give constraints on the cosmological parameters from recent Planck 2015 data. We find that the Universe is not completely reion…
Searching for Overionized Plasma in the Gamma-ray-emitting Supernova Remnant G349.7+0.2
Ercan, E. N.; Majumdar, P.; Saha, L. +3 more
G349.7+0.2 is a supernova remnant (SNR) expanding in a dense medium of molecular clouds and interacting with clumps of molecular material emitting gamma-rays. We analyzed the gamma-ray data of the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope and detected G349.7+0.2 in the energy range of 0.2-300 GeV with a significance of ∼13σ…
Updated reduced CMB data and constraints on cosmological parameters
Cai, Rong-Gen; Guo, Zong-Kuan; Tang, Bo
We obtain the reduced CMB data {lA, R, z∗} from WMAP9, WMAP9+BKP, Planck+WP and Planck+WP+BKP for the ΛCDM and wCDM models with or without spatial curvature. We then use these reduced CMB data in combination with low-redshift observations to put constraints on cosmological parameters. We find that including BKP results in a h…