10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute of Astronomy and Astrophysics, Academia SinicaTW1.4k papers
- Institute of Physics, Academia SinicaTW1.1k papers
- Lawrence Berkeley National LaboratoryUS821 papers
- University of GenevaCH773 papers
- University of MichiganUS761 papers
- University of Illinois Urbana-ChampaignUS757 papers
- University of ChicagoUS755 papers
- Michigan State UniversityUS746 papers
- University of OxfordGB742 papers
- University College LondonGB739 papers
- The Ohio State UniversityUS733 papers
- University of TorontoCA732 papers
14 papers · 2 filters
Two-size approximation: a simple way of treating the evolution of grain size distribution in galaxies
Hiroyuki Hirashita
Full calculations of the evolution of grain size distribution in galaxies are in general computationally heavy. In this paper, we propose a simple model of dust enrichment in a gal…
Resolving the Bright HCN(1-0) Emission toward the Seyfert 2 Nucleus of M51: Shock Enhancement by Radio Jets and Weak Masing by Infrared Pumping?
Satoki Matsushita, Dinh-V-Trung, Frédéric Boone +3
We present high angular resolution observations of the HCN(1-0) emission (at ~1" or ~34 pc), together with CO J = 1-0, 2-1, and 3-2 observations, toward the Seyfert 2 nucleus of M5…
Evolution of grain size distribution in high-redshift dusty quasars: Integrating large amounts of dust and unusual extinction curves
Takaya Nozawa, Ryosuke S. Asano, Hiroyuki Hirashita +1
The discoveries of huge amounts of dust and unusual extinction curves in high-redshift quasars (z > 4) cast challenging issues on the origin and properties of dust in the early uni…
Spatially Resolved Magnetic Field Structure in the Disk of a T Tauri Star
Ian W. Stephens, Leslie W. Looney, Woojin Kwon +6
Magnetic fields in accretion disks play a dominant role during the star formation process but have hitherto been observationally poorly constrained. Field strengths have been infer…
Effects of grain growth on the interstellar polarization curve
Nikolai V. Voshchinnikov, Hiroyuki Hirashita
We apply the time evolution of grain size distributions by accretion and coagulation found in our previous work to the modelling of the wavelength dependence of interstellar linear…
The First Source Counts at 18 microns from the AKARI NEP Survey
Chris Pearson, S. Serjeant, S. Oyabu +9
We present the first galaxy counts at 18 microns using the Japanese AKARI satellite's survey at the North Ecliptic Pole (NEP), produced from the images from the NEP-Deep and NEP-Wi…
Herschel Planetary Nebula Survey (HerPlaNS) - First Detection of OH+ in Planetary Nebulae
I. Aleman, T. Ueta, D. Ladjal +15
We report the first detections of OH emission in planetary nebulae (PNe). As part of an imaging and spectroscopy survey of 11 PNe in the far-IR using the PACS and SPIRE instrum…
Photometric Classification of quasars from RCS-2 using Random Forest
D. Carrasco, L. F. Barrientos, K. Pichara +7
Aims. Construction of a new quasar candidate catalog from the Red-Sequence Cluster Survey 2 (RCS-2), identified solely from photometric information using an automated algorithm sui…
The Herschel Planetary Nebula Survey (HerPlaNS) I. Data Overview and Analysis Demonstration with NGC 6781
T. Ueta, D. Ladjal, K. M. Exter +30
This is the first of a series of investigations into far-IR characteristics of 11 planetary nebulae (PNs) under the Herschel Space Observatory Open Time 1 program, Herschel Planeta…
Spiral Density Waves in M81. I. Stellar Spiral Density Waves
Chien-Chang Feng, Lien-Hsuan Lin, Hsiang-Hsu Wang +1
Aside from the grand-design stellar spirals appearing in the disk of M81, a pair of stellar spiral arms situated well inside the bright bulge of M81 has been recently discovered by…
Measuring Mass Accretion Rate onto the Supermassive Black Hole in M 87 Using Faraday Rotation Measure with the Submillimeter Array
C. Y. Kuo, K. Asada, R. Rao +11
We present the first constraint on Faraday rotation measure (RM) at submillimeter wavelengths for the nucleus of M 87. By fitting the polarization position angles () observed wi…
Evolution of the extinction curves in galaxies
Ryosuke S. Asano, Tsutomu T. Takeuchi, Hiroyuki Hirashita +1
We investigate the evolution of extinction curves in galaxies based on our evolution model of grain size distribution. In this model, we considered various processes: dust formatio…
Formation History of Polycyclic Aromatic Hydrocarbons in Galaxies
Ji Yeon Seok, Hiroyuki Hirashita, Ryosuke S. Asano
Polycyclic aromatic hydrocarbons (PAHs) are some of the major dust components in the interstellar medium (ISM). We present our evolution models for the abundance of PAHs in the ISM…
Is There a Maximum Star Formation Rate in High-Redshift Galaxies?
A. J. Barger, L. L. Cowie, C. -C. Chen +6
We use the James Clerk Maxwell Telescope's SCUBA-2 camera to image a 400 arcmin^2 area surrounding the GOODS-N field. The 850 micron rms noise ranges from a value of 0.49 mJy in th…