Search Publications
A Surface Density Perturbation in the TW Hydrae Disk at 95 au Traced by Molecular Emission
Henning, Th.; van Boekel, R.; Birnstiel, T. +6 more
We present ALMA Cycle 2 observations at 0.″5 resolution of TW Hya of CS J=5-4 emission. The radial profile of the integrated line emission displays oscillatory features outward of 1.″5 (≈ 90 au). A dip-like feature at 1.″6 is coincident in location, depth, and width with features observed in dust scattered light at near-infrared wavelengths. Using…
Optical Line Emission from z ∼ 6.8 Sources with Deep Constraints on Lyα Visibility
Maiolino, R.; Finkelstein, S. L.; Castellano, M. +15 more
We analyze a sample of z-dropout galaxies in the CANDELS GOODS South and UDS fields that have been targeted by a dedicated spectroscopic campaign aimed at detecting their Lyα line. Deep IRAC observations at 3.6 and 4.5 µm are used to determine the strength of optical emission lines affecting these bands at z ∼ 6.5-6.9 in order to (1) investi…
Chemical Cartography. I. A Carbonicity Map of the Galactic Halo
Yoon, Jinmi; Beers, Timothy C.; Lee, Young Sun +5 more
We present the first map of carbonicity, [C/Fe], for the halo system of the Milky Way, based on a sample of over 100,000 main-sequence turnoff stars with available spectroscopy from the Sloan Digital Sky Survey. This map, which explores distances up to 15 kpc from the Sun, reveals clear evidence for the dual nature of the Galactic halo, based on t…
η Carinae's Dusty Homunculus Nebula from Near-infrared to Submillimeter Wavelengths: Mass, Composition, and Evidence for Fading Opacity
Hillier, D. John; Gull, Theodore R.; Nielsen, Krister +5 more
Infrared observations of the dusty, massive Homunculus Nebula around the luminous blue variable η Carinae are crucial to characterize the mass-loss history and help constrain the mechanisms leading to the great eruption. We present the 2.4-670 µm spectral energy distribution, constructed from legacy Infrared Space Observatory observations an…
AGN Coronae through a Jet Perspective
Kara, Erin; Lohfink, Anne; King, Ashley L.
This paper presents an in-depth look at the jet and coronal properties of 41 active galactic nuclei (AGNs). Utilizing the highest quality NuSTAR, XMM-Newton, and NRAO VLA Sky Survey 1.4 GHz data, we find that the radio Eddington luminosity inversely scales with X-ray reflection fraction, and positively scales with the distance between the corona a…
Extending the Calibration of C IV-based Single-epoch Black Hole Mass Estimators for Active Galactic Nuclei
Treu, Tommaso; Barth, Aaron J.; Assef, Roberto J. +5 more
We provide an updated calibration of C IV λ 1549 broad emission line-based single-epoch (SE) black hole (BH) mass estimators for active galactic nuclei (AGNs) using new data for six reverberation-mapped AGNs at redshift z=0.005{--}0.028 with BH masses (bolometric luminosities) in the range {10}6.5{--}{10}7.5 {M}⊙ …
The KMOS Cluster Survey (KCS). I. The Fundamental Plane and the Formation Ages of Cluster Galaxies at Redshift 1.4 < z < 1.6
Bender, Ralf; Mendel, J. Trevor; Cappellari, Michele +13 more
We present the analysis of the fundamental plane (FP) for a sample of 19 massive red-sequence galaxies (M\star > 4× 1010 M⊙) in three known overdensities at 1.39< z< 1.61 from the K-band Multi-object Spectrograph (KMOS) Cluster Survey, a guaranteed-time program with spectroscopy from the KMOS at the VLT an…
H I, CO, and Dust in the Perseus Cloud
Tachihara, Kengo; Fukui, Yasuo; Hayashi, Katsuhiro +3 more
Comparison analyses between the gas emission data ({{H}} {{I}} 21 {cm} line and {CO} 2.6 {mm} line) and the Planck/IRAS dust emission data (optical depth at 353 {GHz} {τ }353 and dust temperature {T}{{d}}) allow us to estimate the amount and distribution of the hydrogen gas more accurately, and our previous studies revealed t…
Rotating Stars from Kepler Observed with Gaia DR1
Davenport, James R. A.
Astrometric data from the recent Gaia Data Release 1 have been matched against the sample of stars from Kepler with known rotation periods. A total of 1299 bright rotating stars were recovered from the subset of Gaia sources with good astrometric solutions, most with temperatures above 5000 K. From these sources, 894 were selected as lying near th…
Survey of Water and Ammonia in Nearby Galaxies (SWAN): Resolved Ammonia Thermometry, and Water and Methanol Masers in the Nuclear Starburst of NGC 253
Meier, David S.; Ott, Jürgen; Schinnerer, Eva +3 more
We present Karl G. Jansky Very Large Array molecular line observations of the nearby starburst galaxy NGC 253, from SWAN, the Survey of Water and Ammonia in Nearby galaxies. SWAN is a molecular line survey at centimeter wavelengths designed to reveal the physical conditions of star-forming gas over a range of star-forming galaxies. NGC 253 has bee…