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The Taurus Boundary of Stellar/Substellar (TBOSS) Survey. I. Far-IR disk emission measured with Herschel
Pinte, C.; Ménard, F.; Bouy, H. +4 more
With the PACS instrument on Herschel, 134 low mass members of the Taurus star-forming region spanning the M4-L0 spectral type range and covering the transition from low mass stars to brown dwarfs were observed. Combining the new Herschel results with other Herschel programs, a total of 150 of the 154 M4-L0 Taurus members have observations, and we …
Resolved Star Formation on Sub-galactic Scales in a Merger at z = 1.7
Rigby, Jane R.; Whitaker, Katherine E.; Brammer, Gabriel B. +4 more
We present a detailed analysis of Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) G141 grism spectroscopy for seven star-forming regions of the highly magnified lensed starburst galaxy RCSGA 032727-132609 at z = 1.704. We measure the spatial variations of the extinction in RCS0327 through the observed Hγ/Hβ emission line ratios, finding a …
The average 0.5-200 keV spectrum of local active galactic nuclei and a new determination of the 2-10 keV luminosity function at z ≈ 0
Ballantyne, D. R.
The broad-band X-ray spectra of active galactic nuclei (AGNs) contains information about the nuclear environment from Schwarzschild radii scales (where the primary power law is generated in a corona) to distances of ∼1 pc (where the distant reflector may be located). In addition, the average shape of the X-ray spectrum is an important input into X…
The Association of Solar Flares with Coronal Mass Ejections During the Extended Solar Minimum
Lemen, J. R.; Aschwanden, M. J.; Nitta, N. V. +3 more
We study the association of solar flares with coronal mass ejections (CMEs) during the deep, extended solar minimum of 2007 - 2009, using extreme-ultraviolet (EUV) and white-light (coronagraph) images from the Solar Terrestrial Relations Observatory (STEREO). Although all of the fast (v>900 km s−1), wide (θ>100∘) CMEs a…
Comparing supernova remnants around strongly magnetized and canonical pulsars
Rea, N.; Torres, D. F.; Martin, J. +1 more
The origin of the strong magnetic fields measured in magnetars is one of the main uncertainties in the neutron star field. On the other hand, the recent discovery of a large number of such strongly magnetized neutron stars is calling for more investigation on their formation. The first proposed model for the formation of such strong magnetic field…
Half-megasecond Chandra Spectral Imaging of the Hot Circumgalactic Nebula around Quasar Mrk 231
Maiolino, R.; Sturm, E.; Veilleux, S. +2 more
A deep 400 ks ACIS-S observation of the nearest quasar known, Mrk 231, is combined with archival 120 ks data to carry out the first ever spatially resolved spectral analysis of a hot X-ray-emitting circumgalactic nebula around a quasar. The 65 × 50 kpc X-ray nebula shares no resemblance with the tidal debris seen at optical wavelengths. One notabl…
Model-independent fit to Planck and BICEP2 data
Mena, Olga; Barranco, Laura; Boubekeur, Lotfi
Inflation is the leading theory to describe elegantly the initial conditions that led to structure formation in our Universe. In this paper, we present a novel phenomenological fit to the Planck, WMAP polarization (WP) and the BICEP2 data sets using an alternative parametrization. Instead of starting from inflationary potentials and computing the …
An X-ray and UV flare from the galaxy XMMSL1 J061927.1-655311
Read, A. M.; Esquej, P.; Komossa, S. +6 more
Aims: New high variability extragalactic sources may be identified by comparing the flux of sources seen in the XMM-Newton Slew Survey with detections and upper limits from the ROSAT All Sky Survey.
Methods: A detected flaring extragalactic source was monitored with Swift and XMM-Newton to track its temporal and spectral evolution. Optic…
Transiting exoplanets from the CoRoT space mission. XXV. CoRoT-27b: a massive and dense planet on a short-period orbit
Mazeh, T.; Aigrain, S.; Alonso, R. +36 more
Aims: We report the discovery of a massive and dense transiting planet CoRoT-27b on a 3.58-day orbit around a 4.2 Gyr-old G2 star. The planet candidate was identified from the CoRoT photometry, and was confirmed as a planet with ground-based spectroscopy.
Methods: The confirmation of the planet candidate is based on radial velocity obser…
An Estimate of the Coronal Magnetic Field near a Solar Coronal Mass Ejection from Low-frequency Radio Observations
Ramesh, R.; Kathiravan, C.; Hariharan, K. +2 more
We report ground-based, low-frequency (<100 MHz) radio imaging, spectral, and polarimeter observations of the type II radio burst associated with the solar coronal mass ejection (CME) that occurred on 2013 May 2. The spectral observations indicate that the burst has fundamental (F) and harmonic (H) emission components with split-band and herrin…