Search Publications
The Herschel-PACS Legacy of Low-mass Protostars: The Properties of Warm and Hot Gas Components and Their Origin in Far-UV Illuminated Shocks
Herczeg, Gregory J.; van Dishoeck, Ewine F.; Green, Joel D. +11 more
Recent observations from Herschel allow the identification of important mechanisms responsible both for the heating of the gas that surrounds low-mass protostars and for its subsequent cooling in the far-infrared. Shocks are routinely invoked to reproduce some properties of the far-IR spectra, but standard models fail to reproduce the emission fro…
The TOP-SCOPE Survey of Planck Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17
Bernard, J. -P.; McGehee, P.; Montier, L. +153 more
The low dust temperatures (<14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. “TOP-SCOPE” is a joint survey program targeting ∼2000 PGCCs in J = 1-0 transitions of CO isotopologues and ∼1000 PGCCs in 850 µm continuum emission. The objective of the “…
Spectral Properties of Cool Stars: Extended Abundance Analysis of Kepler Objects of Interest
Fischer, Debra A.; Brewer, John M.
Accurate stellar parameters and precise elemental abundances are vital pieces to correctly characterize discovered planetary systems, better understand planet formation, and trace galactic chemical evolution. We have performed a uniform spectroscopic analysis for 1127 stars, yielding accurate gravity, temperature, and projected rotational velocity…
Stellar Mass Distribution and Star Formation History of the Galactic Disk Revealed by Mono-age Stellar Populations from LAMOST
Shi, Jianrong; Wu, Yaqian; Xiang, Maosheng +9 more
We present a detailed determination and analysis of 3D stellar mass distribution of the Galactic disk for mono-age populations using a sample of 0.93 million main-sequence turnoff and subgiant stars from the LAMOST Galactic Surveys. Our results show the following. (1) All stellar populations younger than 10 Gyr exhibit strong disk flaring, which i…
hCOSMOS: A Dense Spectroscopic Survey of r ≤ 21.3 Galaxies in the COSMOS field
Hwang, Ho Seong; Geller, Margaret J.; Damjanov, Ivana +2 more
We describe the hCOSMOS redshift survey of the COSMOS field conducted with the Hectospec spectrograph on the MMT. In the central 1 deg2, the hCOS20.6 subset of the survey is > 90 % complete to a limiting magnitude r = 20.6. The hCOSMOS survey includes 1701 new redshifts in the COSMOS field. We also use the total of 4362 new and remea…
The Herschel-ATLAS Data Release 2. Paper II. Catalogs of Far-infrared and Submillimeter Sources in the Fields at the South and North Galactic Poles
Valtchanov, I.; Ivison, R. J.; de Zotti, G. +13 more
The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) is a survey of 660 deg2 with the PACS and SPIRE cameras in five photometric bands: 100, 160, 250, 350, and 500 µm. This is the second of three papers describing the data release for the large fields at the south and north Galactic poles (NGP and SGP). In this paper w…
Deep JVLA Imaging of GOODS-N at 20 cm
Owen, Frazer N.
New wideband continuum observations in the 1-2 GHz band of the GOODS-N field using NSF’s Karl G. Jansky Very Large Array (VLA) are presented. The best image with an effective frequency of 1525 MHz reaches an rms noise in the field center of 2.2 µJy, with 1.″6 resolution. A catalog of 795 sources is presented covering a radius of 9 arcminutes…
The Dusty Galactic Center as Seen by SCUBA-2
Tilanus, R. P. J.; Currie, M. J.; Chrysostomou, A. +9 more
We present new JCMT SCUBA-2 observations of the Galactic Center region from 355° < l< 5° and b< +/- 1° , covering 10 × 2 square degrees along the Galactic Plane to a depth of 43 mJy beam-1 at 850 µm and 360 mJy beam-1 at 450 µm. We describe the mapping strategy and reduction method used. We present 1…
A Comprehensive Catalog of Galactic Eclipsing Binary Stars with Eccentric Orbits Based on Eclipse Timing Diagrams
Ogłoza, W.; Kim, H. -W.; Kim, C. -H. +3 more
A comprehensive catalog of 623 galactic eclipsing binary (EB) systems with eccentric orbits is presented with more than 2830 times of minima determined from the archived photometric data by various sky-survey projects and new photometric measurements. The systems are divided into two groups according to whether the individual system has a GCVS nam…
Planck Cold Clumps in the λ Orionis Complex. II. Environmental Effects on Core Formation
Ristorcelli, I.; Soam, Archana; Choi, Minho +29 more
Based on the 850 µm dust continuum data from SCUBA-2 at James Clerk Maxwell Telescope (JCMT), we compare overall properties of Planck Galactic Cold Clumps (PGCCs) in the λ Orionis cloud to those of PGCCs in the Orion A and B clouds. The Orion A and B clouds are well-known active star-forming regions, while the λ Orionis cloud has a different…