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The Galaxy's veil of excited hydrogen
Zaritsky, Dennis; Zhang, Huanian
Many of the baryons in our Galaxy probably lie outside the well-known disk and bulge components. Despite a wealth of evidence for the presence of some gas in galactic halos—including absorption line systems in the spectra of quasars, high-velocity neutral hydrogen clouds in our Galaxy halo, line-emitting ionized hydrogen originating from galactic …
Erratum: “Dust and Gas in the Magellanic Clouds from the HERITAGE Herschel Key Project. I. Dust Properties and Insights into the Origin of the Submm Excess Emission” (2014, ApJ, 797, 85)
Okumura, K.; Gordon, Karl D.; Bot, Caroline +33 more
Gaia Data Release 1. The archive visualisation service
Mora, A.; Jordan, S.; Luri, X. +31 more
Context. The first Gaia data release (DR1) delivered a catalogue of astrometry and photometry for over a billion astronomical sources. Within the panoplyof methods used for data exploration, visualisation is often the starting point and even the guiding reference for scientific thought. However, this is a volume of data that cannot be efficiently …
First hard X-ray detection and broad-band X-ray study of the unidentified transient AX J1949.8+2534
Masetti, N.; Sidoli, L.; Bird, A. J. +3 more
We present the results from INTEGRAL and Swift/XRT observations of the hitherto poorly studied unidentified X-ray transient AX J1949.8+2534, and on archival multiwavelength observations of field objects. Bright hard X-ray outbursts have been discovered above 20 keV for the first time, the measured duty cycle and dynamic range are of the order of ∼…
Diversity of dwarf galaxy IR-submm emission patterns: CLUES from hydrodynamical simulations
Brook, Chris B.; Obreja, Aura; Granato, Gian Luigi +2 more
Context. The spectral energy distributions (SEDs) of low-mass low-metallicity (dwarf) galaxies are a challenging piece of the puzzle of galaxy formation in the near Universe. These SEDs show some particular features in the submillimeter to far-infrared (FIR) wavelength range compared to normal larger galaxies that cannot be explained by the curren…
HST Hα grism spectroscopy of ROLES: a flatter low-mass slope for the z ∼ 1 SSFR-mass relation
Glazebrook, Karl; Skelton, Rosalind E.; Balogh, Michael L. +4 more
We present measurements of star formation rates (SFRs) for dwarf galaxies (M* ∼ 108.5 M_{⊙}) at z ∼ 1 using near-infrared slitless spectroscopy from the Hubble Space Telescope (HST) by targeting and measuring the luminosity of the Hα emission line. Our sample is derived from the Redshift One LDSS3 Emission Line Survey (ROLES)…
Measuring neutrino mass imprinted on the anisotropic galaxy clustering
Oh, Minji; Song, Yong-Seon
The anisotropic galaxy clustering of large scale structure observed by the Baryon Oscillation Spectroscopic Survey Data Release 11 is analyzed to probe the sum of neutrino masses in the small mν lesssim 1 eV limit in which the early broadband shape determined before the last scattering surface is immune from the variation of mν
Distribution of water in the G327.3-0.6 massive star-forming region
van Dishoeck, E. F.; van der Tak, F.; Leurini, S. +3 more
Aims: Following our past study of the distribution of warm gas in the G327.3-0.6 massive star-forming region, we aim here at characterizing the large-scale distribution of water in this active region of massive star formation made of individual objects in different evolutionary phases. We investigate possible variations of the water abundance…
Search for close stellar encounters with the solar system from data on nearby dwarfs
Bobylev, V. V.
Trigonometric parallaxesmeasuredwith ground-based telescopes of the RECONS consortium as part of the CTIOPI program are used to search for stars that have either had an encounter with the solar system in the past or will have such an encounter in the future, at distances of less than a few parsecs. These are mainly low-mass dwarfs and subdwarfs of…
a Photogrammetric Pipeline for the 3d Reconstruction of Cassis Images on Board Exomars Tgo
Cremonese, G.; Thomas, N.; Pommerol, A. +3 more
CaSSIS (Colour and Stereo Surface Imaging System) is the stereo imaging system onboard the European Space Agency and ROSCOSMOS ExoMars Trace Gas Orbiter (TGO) that has been launched on 14 March 2016 and entered a Mars elliptical orbit on 19 October 2016. During the first bounded orbits, CaSSIS returned its first multiband images taken on 22 and 26…