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History and destiny of an emerging early-type galaxy. New IFU insights on the major-merger remnant NGC 7252
Bournaud, F.; Duc, P. -A.; Kuntschner, H. +7 more
Context. The merging of galaxies is one key aspect in our favourite hierarchical ΛCDM Universe and is an important channel leading to massive quiescent elliptical galaxies. Understanding this complex transformational process is ongoing.
Aims: We aim to study NGC 7252, which is one of the nearest major-merger galaxy remnants, observed 1 Gyr af…
The Absolute Reflectance and New Calibration Site of the Moon
Lu, Yu; Cai, Wei; Wu, Yunzhao +1 more
How bright the Moon is forms a simple but fundamental and important question. Although numerous efforts have been made to answer this question such as use of sophisticated electro-optical measurements and suggestions for calibration sites, the answer is still debated. An in situ measurement with a calibration panel on the surface of the Moon is cr…
Large-scale CO J = 1-0 observations of the giant molecular cloud associated with the infrared ring N35 with the Nobeyama 45 m telescope
Kuno, Nario; Tachihara, Kengo; Fukui, Yasuo +14 more
We report an observational study of the giant molecular cloud (GMC) associated with the Galactic infrared ring-like structure N35 and two nearby H II regions G024.392+00.072 (H II region A) and G024.510-00.060 (H II region B), using the new CO J = 1-0 data obtained as a part of the FOREST Unbiased Galactic Plane Imaging survey with the Nobeyama 45…
Characterization of the HD 219134 multiplanet system I. Observations of stellar magnetism, wind, and high-energy flux
Petit, P.; Vidotto, A. A.; Murthy, J. +9 more
HD 219134 hosts several planets, with seven candidates reported, and the two shortest period planets are rocky (4-5 M⊕) and transit the star. Here, we present contemporaneous multiwavelength observations of the star HD 219134. We observed HD 219134 with the Narval spectropolarimeter at the Observatoire du Pic du Midi and used Zeeman-Dop…
The Recoiling Black Hole Candidate 3C 186: Spatially Resolved Quasar Feedback and Further Evidence of a Blueshifted Broad-line Region
Chiaberge, Marco; Capetti, Alessandro; Norman, Colin +1 more
We present the results of integral field spectroscopy of the gravitational wave (GW) recoiling black hole candidate 3C 186. The goal of the observation is to study the kinematics of the [O III]5007 narrow emission-line region (NLR) of the quasar, and investigate the origin of the velocity offsets originally measured for different UV lines. The res…
Optical Studies of 15 Hard X-Ray Selected Cataclysmic Binaries
Thorstensen, John R.; Halpern, Jules P.; Buckley, David A. H. +5 more
We conducted time-resolved optical spectroscopy and/or time-series photometry of 15 cataclysmic binaries that were discovered in hard X-ray surveys by the Swift Burst Alert Telescope and the International Gamma-Ray Astrophysics Laboratory, with the goal of measuring their orbital periods and searching for spin periods. Four of the objects in this …
Disclosing the properties of low-redshift dual AGN through XMM-Newton and SDSS spectroscopy
Komossa, S.; Guainazzi, Matteo; Paragi, Zsolt +10 more
We report on an optical (SDSS) and X-ray (XMM-Newton) study of an optically selected sample of four dual AGN systems at projected separations of 30-60 kpc. All sources are detected in the X-ray band (0.3-10keV); seven objects are optically identified as Seyfert, while one source, optically classified as a low-ionization nuclear emission-line regio…
A possible solution of the puzzling variation of the orbital period of MXB 1659-298
Sanna, A.; Di Salvo, T.; Burderi, L. +6 more
MXB 1659-298 is a transient neutron-star low-mass X-ray binary system that shows eclipses with a periodicity of 7.1 h. MXB 1659-298 went to outburst in 2015 August, after 14 years of quiescence. We investigate the orbital properties of this source with a baseline of 40 years, obtained by combining the eight eclipse arrival times present in the lit…
No evidence for dust B -mode decorrelation in Planck data
Sheehy, Christopher; Slosar, Anže
Constraints on inflationary B modes using cosmic microwave background polarization data commonly rely on either template cleaning or cross-spectra between maps at different frequencies to disentangle Galactic foregrounds from the cosmological signal. Assumptions about how the foregrounds scale with frequency are therefore crucial to interpreting t…
The SOPHIE search for northern extrasolar planets. XIII. Two planets around M-dwarfs Gl617A and Gl96
Bouchy, F.; Deleuil, M.; Moutou, C. +32 more
We report the detection of two exoplanets and a further tentative candidate around the M-dwarf stars Gl96 and Gl617A, based on radial velocity measurements obtained with the SOPHIE spectrograph at the Observatoire de Haute-Provence. Both stars were observed in the context of the SOPHIE exoplanet consortium's dedicated M-dwarf subprogramme, which a…