201 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Astronomical Observatory of JapanJP54 papers
- The University of TokyoJP38 papers
- The Graduate University for Advanced Studies, SOKENDAIJP22 papers
- Nagoya UniversityJP18 papers
- Institute of Astronomy and Astrophysics, Academia SinicaTW15 papers
- Institute of Space and Astronautical ScienceJP15 papers
- Osaka Prefecture UniversityJP15 papers
- Japan Aerospace Exploration AgencyJP14 papers
- University of TsukubaJP14 papers
- Astronomical ObservatoryRS11 papers
- Kagoshima UniversityJP11 papers
- Centre National de la Recherche ScientifiqueFR9 papers
22 papers · 1 filter
Absorption Phenomena and a Probable Blast Wave in the 13 July 2004 Eruptive Event
V. V. Grechnev, A. M. Uralov, V. A. Slemzin +3
We present a case study of the 13 July 2004 solar event, in which disturbances caused by eruption of a filament from an active region embraced a quarter of the visible solar surfac…
Millimeter- and Submillimeter-Wave Observations of the OMC-2/3 Region. III. An Extensive Survey for Molecular Outflows
Satoko Takahashi, Masao Saito, Nagayoshi Ohashi +5
Using the ASTE 10 m submillimeter telescope and the 1.4 m Infrared Survey Facility (IRSF), we performed an extensive outflow survey in the Orion Molecular Cloud -2 and -3 region. O…
An Extreme Solar Event of 20 January 2005: Properties of the Flare and the Origin of Energetic Particles
V. V. Grechnev, V. G. Kurt, I. M. Chertok +9
The extreme solar and SEP event of 20 January 2005 is analyzed from two perspectives. Firstly, we study features of the main phase of the flare, when the strongest emissions from m…
Suzaku broad-band spectroscopy of RX J1347.5-1145: constraints on the extremely hot gas and non-thermal emission
N. Ota, K. Murase, T. Kitayama +6
We present the results from the analysis of long Suzaku observations of the most X-ray luminous galaxy cluster RX J1347.5-1145 at z=0.451. Aims: We study physical properties of the…
Millimeter- and Submillimeter-Wave Observations of the OMC-2/3 Region. II. Observational Evidence for Outflow-Triggered Star Formation in the OMC-2 FIR 3/4 Region
Yoshito Shimajiri, Satoko Takahashi, Shigehisa Takakuwa +2
We have carried out the observations of the OMC-2 FIR 3/4 region with the NMA and ASTE in the HCO (1--0), CO (3--2, 1--0), SiO (=0, =2--1), CS (2--1), and…
A Molecular Line Observation toward Massive Clumps Associated with Infrared Dark Clouds
Takeshi Sakai, Nami Sakai, Kazuhisa Kamegai +4
We have surveyed the N2H+ J=1-0, HC3N J=5-4, CCS J_N=4_3-3_2, NH3 (J, K) = (1, 1), (2, 2), (3, 3), and CH3OH J=7-6 lines toward the 55 massive clumps associated with infrared dark…
First Detection of 12CO (1--0) Emission from Two Narrow-Line Seyfert 1 Galaxies
T. Kawaguchi, K. Nakanishi, K. Kohno +2
In order to investigate how the growth of galactic bulges progresses with the growth of central black holes (BHs), we observed molecular gas (fuel for the coming star formation) in…
Millimeter Interferometric HCN(1-0) and HCO+(1-0) Observations of Luminous Infrared Galaxies
Masatoshi Imanishi, Kouichiro Nakanishi, Yoichi Tamura +2
We present the results on millimeter interferometric observations of four luminous infrared galaxies (LIRGs), Arp 220, Mrk 231, IRAS 08572+3915, and VV 114, and one Wolf-Rayet gala…
Evidence for a Population of High-Redshift Submillimeter Galaxies from Interferometric Imaging
Joshua D. Younger, Giovanni G. Fazio, Jia-Sheng Huang +22
We have used the Submillimeter Array to image a flux limited sample of seven submillimeter galaxies, selected by the AzTEC camera on the JCMT at 1.1 mm, in the COSMOS field at 890u…
A radiation driven implosion model for the enhanced luminosity of protostars near HII regions
K. Motoyama, T. Umemoto, H. Shang
Context. Molecular clouds near the H II regions tend to harbor more luminous protostars. Aims. Our aim in this paper is to investigate whether or not radiation-driven implosion mec…
Environmental Effects on Gaseous Disks of the Virgo Spiral Galaxies
Hiroyuki Nakanishi, Nario Kuno, Yoshiaki Sofue +8
We found high molecular fractions (; ratio of the molecular to total gas surface densities) in three of five Virgo spiral galaxies in spite of their low total gas colu…
ASTE Observations of Warm Gas in Low-mass Protostellar Envelopes: Different Kinematics between Submillimeter and Millimeter Lines
Shigehisa Takakuwa, Takeshi Kamazaki, Masao Saito +2
With the ASTE telescope, we have made observations of three low-mass protostellar envelopes around L483, B335, and L723 in the submillimeter CS (=7--6) and HCN (=4--3) lines.…
CO emission from candidate photo-dissociation regions in M81
J. H. Knapen, R. J. Allen, H. I Heaton +2
Context At least a fraction of the atomic hydrogen in spiral galaxies is suspected to be the result of molecular hydrogen which has been dissociated by radiation from massive stars…
Molecular outflows around high-mass young stellar objects
Y. Xu, Z. -Q. Shen, J. Yang +7
We present a study of molecular outflows using high-resolution mapping of the CO (1-0) line emission toward eight relatively nearby 6.7 GHz methanol masers, which are associated wi…
Millimeter Interferometric Investigations of the Energy Sources of Three Ultraluminous Infrared Galaxies, UGC 5101, Mrk 273, and IRAS 17208-0014, based on HCN to HCO+ Ratios
Masatoshi Imanishi, Kouichiro Nakanishi, Kotaro Kohno
We present interferometric observations of three ultraluminous infrared galaxies (ULIRGs; UGC 5101, Mrk 273, and IRAS 17208-0014) in the 3-mm wavelength range, using the Nobeyama M…
The Growth of the Local Void and the Origin of the Local Velocity Anomaly
I. Iwata, K. Ohta, K. Nakanishi +2
The Local Void is the nearest void from us and is thought to be playing an important role in the kinematics of the local universe, especially as one of the suspected source of the…
A 32 m Parabolic Antenna in Peru At 3,370m of Altitude
J. Ishitsuka, M. Ishitsuka, N. Kaifu +8
At the altitude of 3,370 m on the Peruvian Andes, a 32m antenna owned by the telecommunications company Telefonica del Peru will be transformed to a Radio Telescope, it would be tr…
Deep Searches for High Redshift Molecular Absorption
S. J. Curran, J. K. Webb, M. T. Murphy +1
Millimetre-band scans of the frequency space towards optically dim quasars is potentially a highly efficient method for detecting new high redshift molecular absorption systems. He…
Decomposition of the Superwind in M82
Youichi Ohyama, Yoshiaki Taniguchi, Masanori Iye +16
We present new optical images (, , and H) of the archetypical starburst/superwind galaxy M82 obtained with the 8.2 m Subaru Telescope to reveal new detailed structures of…
A New High-Redshift Lyman alpha Emitter: Possible Superwind Galaxy at z = 5.69
M. Ajiki, Y. Taniguchi, T. Murayama +33
During the course of our deep optical imaging survey for Ly alpha emitters at z approximately 5.7 in the field around the z=5.74 quasar SDSSp J104433.04-012502.2, we have found a c…
Optical Spectropolarimetry of SN 2002ap: High Velocity Asymmetric Explosion
K. S. Kawabata, D. J. Jeffery, M. Iye +27
We present spectropolarimetry of the Type Ic supernova SN 2002ap and give a preliminary analysis: the data were taken at two epochs, close to and one month later than the visual ma…
A Shock-Induced Pair of Superbubbles in the High-Redshift Powerful Radio Galaxy MRC 0406-244
Yoshiaki Taniguchi, Youichi Ohyama, Takashi Murayama +26
We present new optical spectroscopy of the high-redshift powerful radio galaxy MRC 0406244 at redshift of 2.429. We find that the two extensions toward NW and SE probed in the r…