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The data processing pipeline for the Herschel1- HIFI instrument
Shipman, R. F.; Edwards, K.; Kester, D. +2 more
The HIFI data processing pipeline was developed to systematically process diagnostic, calibration and astronomical observations taken with the HIFI science instrument as part of the Herschel mission. The HIFI pipeline processed data from all HIFI observing modes within the Herschel automated processing environment, as well as, within an interactiv…
Variable Stars in Sagittarius Globular Clusters. I. Arp 2
Pritzl, Barton J.; Smith, Horace A.; Catelan, Márcio +3 more
We present new photometry and analysis of the twelve variable stars (nine RR Lyrae (RRL), three SX Phoenicis (SX Phe)) belonging to the Sagittarius globular cluster Arp 2. Of the nine RRL stars in the cluster, eight are RRab and one is RRc. From the RRab stars, we determined a mean period of < {P}{ab}> =0.581+/- 0.047 days, where …
V404 CYG/GS 2023+338: Monitoring in the Optical with Robotic Telescopes of the MASTER Global Network during the 2015 Superburst
Rebolo, R.; Buckley, D. A. H.; Giovannelli, F. +23 more
2070 unique, homogeneous photometric and polarization observations of the microquasar in a binary system with a black hole V404 Cyg/GS2023+338 obtained in 2015 with the MASTER global network of robotic telescopes (16 robotic telescopes located at eight points on the Earth in Russia, Spain, South Africa, and Argentina) are presented. MASTER was the…
Local activity of comets: an indicator of non-uniform composition
Kossacki, Konrad J.; Czechowski, L.
In this paper, we investigate the conditions for the local ejection of a metamorphosed surface layer of material from a comet. We have calculated the strengthening of the material of the nucleus of comet 67P/Churyumov-Gerasimenko and the increase of gas pressure in pores. We are interested in the boundary between the regions Anhur and Bes, where a…
Astrometric investigation of visual binaries at Pulkovo
Romanenko, L. G.; Kalinichenko, O. A.
In the last 40 years the team headed by A.A. Kiselev at Pulkovo determined the orbits of 65 wide visual binaries and multiple stars. In most of the cases these studies are based on series of photographic observations made with the 26-inch refractor of Pulkovo observatory. Positional observations from Washington Double Star Catalog (WDS) were used …
Quiet-Sun Explosive Events Observed in He II λ304 with MOSES-06
Kankelborg, Charles C.; Rust, Thomas
In this paper the unique data from the Multi-Order Solar Extreme-Ultraviolet Spectrograph (MOSES) are used to investigate transition region explosive events in the He II λ304 spectral line. Particular attention is paid to two example events: one blueshifted jet and one bidirectional jet. Observations suggest that these events consist exclusively o…
Optical design of the High Resolution Imaging Channel of SIMBIO-SYS: publisher's note
Cremonese, Gabriele; Palumbo, Pasquale; Zusi, Michele +4 more
The stellar host in star-forming low-mass galaxies: Evidence for two classes
Muñoz-Tuñón, C.; Méndez-Abreu, J.; Lumbreras-Calle, A.
Context. The morphological evolution of star-forming galaxies provides important clues to understand their physical properties, as well as the triggering and quenching mechanisms of star formation.
Aims: We analyze the morphology of galaxies hosting star-forming events at low redshift (z < 0.36). We aim at connecting morphology and star-fo…
Chandra Observations of the AS0295 Cluster
Hughes, John P.; Pascut, Aurelia
We present deep (205 ks) Chandra observations of the AS0295 binary merging cluster (z = 0.30). In the X-ray image, the secondary component is clearly visible as a surface brightness peak, while the primary cluster has a flatter distribution. We found cool gas (∼6 keV) associated with the secondary, while the central temperature of the primary does…
Reconstructing the weak lensing magnification distribution of type Ia supernovae
Wang, Yun; Zhai, Zhongxu
Weak lensing of type Ia supernovae (SNe Ia) is a systematic uncertainty in the use of SNe Ia as standard candles, as well as an independent cosmological probe, if the corresponding magnification distribution can be extracted from data. We study the peak brightness distribution of SNe Ia in the Pantheon sample and find that the high-z subsample sho…