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Accurate shear measurement with faint sources
Zhang, Jun; Luo, Wentao; Foucaud, Sebastien
For cosmic shear to become an accurate cosmological probe, systematic errors in the shear measurement method must be unambiguously identified and corrected for. Previous work of this series has demonstrated that cosmic shears can be measured accurately in Fourier space in the presence of background noise and finite pixel size, without assumptions …
Anatomy of the AGN in NGC 5548. III. The high-energy view with NuSTAR and INTEGRAL
Harrison, F.; Kriss, G. A.; Bianchi, S. +15 more
We describe the analysis of the seven broad-band X-ray continuum observations of the archetypal Seyfert 1 galaxy NGC 5548 that were obtained with XMM-Newton or Chandra, simultaneously with high-energy (>10 keV) observations with NuSTAR and INTEGRAL. These data were obtained as part of a multiwavelength campaign undertaken from the summer of 201…
Multi-wavelength Observations of 3FGL J2039.6-5618: A Candidate Redback Millisecond Pulsar
Greiner, J.; Belfiore, A.; Marelli, M. +8 more
We present multi-wavelength observations of the unassociated γ-ray source 3FGL J2039.6-5618 detected by the Fermi Large Area Telescope. The source γ-ray properties suggest that it is a pulsar, most likely a millisecond pulsar, for which neither radio nor γ-ray pulsations have been detected. We observed 3FGL J2039.6-5618 with XMM-Newton and discove…
Coordinated X-Ray and Optical Observations of Star-Planet Interaction in HD 17156
Scandariato, G.; Pagano, I.; Sozzetti, A. +14 more
The large number of close-in Jupiter-size exoplanets prompts the question whether star-planet interaction (SPI) effects can be detected. We focused our attention on the system HD 17156, having a Jupiter-mass planet in a very eccentric orbit. Here we present results of the XMM-Newton observations and of a five month coordinated optical campaign wit…
Evolution of Star-formation Properties of High-redshift Cluster Galaxies since z = 2
Im, Myungshin; Kim, Jae-Woo; Koekemoer, Anton +4 more
Using a stellar mass-limited sample of ∼46,600 galaxies ({M}*\gt {10}9.1 {M}⊙ ) at 0.5\lt z\lt 2, we show that the stellar mass, rather than the environment, is the main parameter controlling quenching of star formation in galaxies with {M}*\gt {10}10 {M}⊙ out to z = 2. On the othe…
Observations of Umbral Flashes and Running Sunspot Waves with the Interface Region Imaging Spectrograph
DeLuca, Edward E.; Tian, Hui; Madsen, Chad A.
We present simultaneous, high-resolution, multi-temperature observations of running waves and umbral flashes in a sunspot with the Interface Region Imaging Spectrograph. We analyze intensity variations in slit-jaw images to investigate the relationship between running waves in the 1400 Å (Si IV/transition region) passband and umbral flashes in the…
Study of morphology and stellar content of the Galactic H II region IRAS 16148-5011
Tamura, M.; Samal, M. R.; Ojha, D. K. +3 more
An investigation of the IRAS 16148-5011 region - a cluster at a distance of 3.6 kpc - is presented here, carried out using multiwavelength data in near-infrared (NIR) from the 1.4 m Infrared Survey Facility telescope, mid-infrared (MIR) from the archival Spitzer GLIMPSE (Galactic Legacy Infrared Midplane Survey Extraordinaire) survey, far-infrared…
Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development
Jorda, L.; Lamy, P. L.; Lara, L. M. +47 more
Aims: The OSIRIS camera onboard the Rosetta spacecraft obtained close-up views of the dust coma of comet 67P. The jet structures can be used to trace their source regions and to examine the possible effect of gas-surface interaction.
Methods: We analyzed the wide-angle images obtained in the special dust observation sequences between Aug…
SXDF-ALMA 1.5 arcmin2 Deep Survey: A Compact Dusty Star-forming Galaxy at z = 2.5
Tamura, Yoichi; Kohno, Kotaro; Caputi, Karina I. +23 more
We present the first results from the SXDF-Atacama Large Millimeter/submillimeter Array (ALMA) 1.5 arcmin2 deep survey at 1.1 mm using ALMA. The map reaches a 1σ depth of 55 µJy/beam and covers 12 Hα-selected star-forming galaxies (SFGs) at z = 2.19 or z = 2.53. We have detected continuum emission from three of our Hα-selected sam…
Detection of a Distinct Metal-poor Stellar Halo in the Early-type Galaxy NGC 3115†
Romanowsky, Aaron J.; Brodie, Jean P.; Strader, Jay +1 more
We present the resolved stellar populations in the inner and outer halo of the nearby lenticular galaxy NGC 3115. Using deep Hubble Space Telescope observations, we analyze stars 2 mag fainter than the tip of the red giant branch (TRGB). We study three fields along the minor axis of this galaxy, 19, 37, and 54 kpc from its center—corresponding to …