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MUSE tells the story of NGC 4371: The dawning of secular evolution
Falcón-Barroso, Jesus; Sánchez-Blázquez, Patricia; Gadotti, Dimitri A. +4 more
We use data from the Multi-Unit Spectroscopic Explorer (MUSE), recently commissioned at the Very Large Telescope (VLT), to study the kinematics and stellar population content of NGC 4371, an early-type massive barred galaxy in the core of the Virgo cluster. We integrate this study with a detailed structural analysis using imaging data from the Hub…
Near-ultraviolet Spectroscopy of Star-forming Galaxies from eBOSS: Signatures of Ubiquitous Galactic-scale Outflows
Schneider, Donald P.; Yèche, Christophe; Newman, Jeffrey +7 more
We present rest-frame near-ultraviolet (NUV) spectroscopy of star-forming galaxies (SFGs) at 0.6 < z < 1.2 from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) in SDSS-IV. One of the eBOSS programs is to obtain 2″ (about 15 kpc) fiber spectra of about 200,000 emission-line galaxies (ELGs) at redshift z ≳ 0.6. We use the data fro…
Very Large Interstellar Grains as Evidenced by the Mid-infrared Extinction
Wang, Shu; Li, Aigen; Jiang, B. W.
The sizes of interstellar grains are widely distributed, ranging from a few angstroms to a few micrometers. The ultraviolet (UV) and optical extinction constrains the dust in the size range of a couple hundredths of micrometers to several submicrometers. The near and mid infrared (IR) emission constrains the nanometer-sized grains and angstrom-siz…
Weighing Neutrinos with Cosmic Neutral Hydrogen
Viel, Matteo; Bull, Philip; Villaescusa-Navarro, Francisco
We investigate the signatures left by massive neutrinos on the spatial distribution of neutral hydrogen (H i) in the post-reionization era by running hydrodynamic simulations that include massive neutrinos as additional collisionless particles. We find that halos in massive/massless neutrino cosmologies host a similar amount of neutral hydrogen, a…
E-BOSS: An Extensive stellar BOw Shock Survey. II. Catalogue second release
Peri, C. S.; Benaglia, P.; Isequilla, N. L.
Context. Stellar bow shocks have been studied not only observationally, but also theoretically since the late 1980s. Only a few catalogues of them exist. The bow shocks show emission along all the electromagnetic spectrum, but they are detected more easily in infrared wavelengths. The release of new and high-quality infrared data eases the discove…
Chemical tracers of episodic accretion in low-mass protostars
Bergin, Edwin A.; Visser, Ruud; Jørgensen, Jes K.
Aims: Accretion rates in low-mass protostars can be highly variable in time. Each accretion burst is accompanied by a temporary increase in luminosity, heating up the circumstellar envelope and altering the chemical composition of the gas and dust. This paper aims to study such chemical effects and discusses the feasibility of using molecular…
The evolving relation between star formation rate and stellar mass in the VIDEO survey since z = 3
Vaccari, Mattia; Häußler, Boris; Jarvis, Matt +4 more
We investigate the star formation rate (SFR) and stellar mass, M*, relation of a star-forming (SF) galaxy (SFG) sample in the XMM-LSS field to z ∼ 3.0 using the near-infrared data from the VISTA Deep Extragalactic Observations (VIDEO) survey. Combining VIDEO with broad-band photometry, we use the SED fitting algorithm CIGALE to derive S…
Spectral and spatial imaging of the Be+sdO binary ϕ Persei
Berio, P.; Meilland, A.; Millour, F. +25 more
Aims: The rapidly rotating Be star
The Seven Sisters DANCe. I. Empirical isochrones, luminosity, and mass functions of the Pleiades cluster
Bertin, E.; Bouy, H.; Sarro, L. M. +7 more
Context. The DANCe survey provides photometric and astrometric (position and proper motion) measurements for approximately 2 million unique sources in a region encompassing ~80 deg2 centered on the Pleiades cluster.
Aims: We aim at deriving a complete census of the Pleiades and measure the mass and luminosity functions of the clust…
Detecting primordial B-modes after Planck
Zaldarriaga, Matias; Creminelli, Paolo; López Nacir, Diana +2 more
We update the forecasts for the measurement of the tensor-to-scalar ratio r for various ground-based experiments (AdvACT, CLASS, Keck/BICEP3, Simons Array, SPT-3G), balloons (EBEX 10k and Spider) and satellites (CMBPol, COrE and LiteBIRD), taking into account the recent Planck data on polarized dust and using a component separation method. The for…