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Physical conditions in the gas phases of the giant H II region LMC-N 11. II. Origin of [C II] and fraction of CO-dark gas
Lebouteiller, V.; Madden, S. C.; Galliano, F. +11 more
Context. The ambiguous origin of the [C II] 158µm line in the interstellar medium complicates its use for diagnostics concerning the star-formation rate and physical conditions in photodissociation regions.
Aims: We investigate the origin of [C II] in order to measure the total molecular gas content, the fraction of CO-dark H2
The Eclipsing δ Scuti Star EPIC 245932119
Kristiansen, Martti H.; Hong, Kyeongsoo; Lee, Jae Woo
We present the physical properties of EPIC 245932119 (K p = +9.82) exhibiting both eclipses and pulsations from the K2 photometry. The binary modeling indicates that the eclipsing system is in detached or semi-detached configurations with a mass ratio of 0.283 or 0.245, respectively, and that its light-curve parameters are almost unaffe…
Sea level changes and vertical land motion from altimetry and tide gauges in the Southern Levantine Basin
Mohamed, Bayoumy; Mohamed, Abdallah; Alam El-Din, Khaled +2 more
We have investigated the sea level rise (SLR) in the Southern Levantine region of the Mediterranean Sea during the period 1993-2015 using satellite altimetry and tide gauge data. Satellite altimetry indicated a positive SLR with a mean of 3.51 ± 0.62 mm/year, which is slightly higher than the global averaged mean SLR that was reported about 3.19 ±…
The HD 181433 Planetary System: Dynamics and a New Orbital Solution
Kane, Stephen R.; Wittenmyer, Robert A.; Horner, Jonathan +7 more
We present a detailed analysis of the orbital stability of the HD 181433 planetary system, finding it to exhibit strong dynamical instability across a wide range of orbital eccentricities, semimajor axes, and mutual inclinations. We also analyze the behavior of an alternative system architecture, proposed by Campanella, and find that it offers gre…
A systematic study of soft X-ray pulse profiles of magnetars in quiescence
Ho, Wynn C. G.; Hu, Chin-Ping; Ng, C. -Y.
Magnetars are neutron stars with extremely high surface magnetic fields. They show diverse X-ray pulse profiles in the quiescent state. We perform a systematic Fourier analysis of their soft X-ray pulse profiles. We find that most magnetars have a single-peaked profile and hence have low amplitudes of the second Fourier harmonics (A2). …
Deep ugrizY imaging and DEEP2/3 spectroscopy: a photometric redshift testbed for LSST and public release of data from the DEEP3 Galaxy Redshift Survey
Trump, Jonathan R.; Conselice, Christopher J.; Nandra, Kirpal +19 more
We present catalogues of calibrated photometry and spectroscopic redshifts in the Extended Groth Strip, intended for studies of photometric redshifts (photo-z's). The data includes ugriz photometry from Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) and Y-band photometry from the Subaru Suprime camera, as well as spectroscopic redshifts fro…
Calibrating Star Formation Rate Prescriptions at Different Scales (10 pc-1 kpc) in M31
Schinnerer, Eva; Blanc, Guillermo A.; Kreckel, Kathryn +9 more
We calibrate commonly used star formation rate (SFR) prescriptions using observations in five kiloparsec-sized fields in the nearby galaxy Andromeda (M31) at 10 pc spatial resolution. Our observations at different scales enable us to resolve the star-forming regions and to distinguish them from non-star-forming components. We use extinction-correc…
The MASSIVE Survey XIII. Spatially Resolved Stellar Kinematics in the Central 1 kpc of 20 Massive Elliptical Galaxies with the GMOS-North Integral Field Spectrograph
Ma, Chung-Pei; Greene, Jenny E.; Blakeslee, John P. +5 more
We use observations from the GEMINI-N/GMOS integral field spectrograph (IFS) to obtain spatially resolved stellar kinematics of the central ∼1 kpc of 20 early-type galaxies (ETGs) with stellar masses greater than 1011.7 M ⊙ in the MASSIVE survey. Together with observations from the wide-field Mitchell IFS at McDonald Observat…
Revealing dust-obscured star formation in CLJ1449+0856, a cluster at z = 2
Papageorgiou, A.; Smith, M. W. L.; Eales, S. A. +2 more
We present SCUBA-2 450 and 850 µm data of the mature redshift 2 cluster CLJ1449. We combine this with archival Herschel data to explore the star-forming properties of CLJ1449. Using high-resolution Atacama Large Millimetre Array and Jansky Very Large Array data we identify potentially confused galaxies, and use the Bayesian inference tool XI…
Discovery of a Lyα-emitting Dark Cloud within the z ∼ 2.8 SMM J02399-0136 System
Ivison, R. J.; Prochaska, J. Xavier; Cai, Zheng +9 more
We present Keck/Keck Cosmic Web Imager (KCWI) integral field spectrograph observations of the complex system surrounding SMM J02399-0136 (a lensed z = 2.8 sub-mm galaxy), including an associated Lyα nebula, a dust-obscured, broad-absorption-line quasar, and neighboring galaxies. At a 3σ surface brightness contour of 1.6 × 10-17 erg s