39 citations · 107 across the 16 of their papers we have counts for
20 papers
Bridging the gap between stars and planets
Aina Palau, Dimitris Stamatellos, Matthew Bate +58
The formation mechanisms of brown dwarfs (BDs) and free-floating planets (FFPs) are poorly constrained. The two main competing scenarios include the star-like scenario, where these…
Resolved Structure and Orbital Motion of a Localized 1 au-scale Dust Accumulation in the Protoplanetary Disk around TW Hya
Takashi Tsukagoshi, Takayuki Muto, Hideko Nomura +6
We present the results of high-resolution (~au) Atacama Large Millimeter/submillimeter Array (ALMA) observations of the TW~Hya protoplanetary disk in the Band 6 dust continu…
Millimeter-wave adaptive optics: Demonstrating closed-loop correction for lowest Zernike modes
Yoichi Tamura, Akio Taniguchi, Kotaro Iwakami +15
We report on a five-element prototype wavefront sensor for millimeter-wave adaptive optics (MAO), enabling closed-loop correction of tip-tilt and defocus via secondary mirror (M2)…
FINER: development of the wideband millimeter-wave receiver system and preparations for first light on the Large Millimeter Telescope
Akio Taniguchi, Yoichi Tamura, Takeshi Sakai +38
The recent discovery of an excess of luminous galaxies in the early Universe necessitates sensitive and wideband millimeter spectroscopy to understand their rapid growth. To addres…
GLTCAM: Concept of Multi-color Millimeter and Submillimeter Camera for the Greenland Telescope
Shuhei Inoue, Tatsuya Takekoshi, Shinsuke Uno +12
To investigate the formation history of large-scale structure through the dynamics of galaxy clusters, we are developing a multi-color millimeter and submillimeter-wave continuum c…
The LMT 2 millimeter receiver system (B4R). II. Science demonstration observations toward Orion-KL/OMC-1
Teppei Yonetsu, Ryohei Kawabe, Yuki Yoshimura +26
We present the results of mapping and single-point spectral scans toward Orion-KL/OMC-1 performed as science demonstrations of a 2 mm SIS receiver, the Band 4 Receiver (B4R), insta…
The LMT 2 Millimeter Receiver System (B4R). I. Overview and Results of Science Demonstration
Ryohei Kawabe, Takeshi Sakai, Kunihiko Tanaka +30
We report on the results of the on-sky test and science demonstration conducted with the 2 mm receiver system, B4R, on the 50 m Large Millimeter Telescope (LMT), located at an alti…
Large gas inflow driven by a matured galactic bar in the early Universe
Shuo Huang, Ryohei Kawabe, Hideki Umehata +3
Bar structures are present in about half of local disk galaxies and play pivotal roles in secular galaxy evolution. Bars impose a non-axisymmetric perturbation to the rotating disk…
Unveiling Stellar Feedback and Cloud Structure in the Ophiuchi A Region with ALMA and JWST: Discovery of Substellar Cores, CO Striations, and Protostellar Outflows
Fumitaka Nakamura, Ryohei Kawabe, Shuo Huang +9
In clustered star-forming regions, stellar feedback-such as HII regions/photon-dominated regions (PDRs), and protostellar jets/outflows-shapes cloud structures and influences star…
ALMA 2D Super-resolution Imaging Survey of Ophiuchus Class I/Flat Spectrum/II Disks -- I: Discovery of New Disk Substructures
Ayumu Shoshi, Masayuki Yamaguchi, Takayuki Muto +4
This study focuses on Class I, Flat Spectrum (FS), and Class II disks in the Ophiuchus molecular cloud, a nearby active star-forming region with numerous young stellar objects (YSO…
Q-band Line Survey Observations toward a Carbon-chain-rich Clump in the Serpens South Region
Kotomi Taniguchi, Fumitaka Nakamura, Sheng-Yuan Liu +17
We have conducted Q-band (30 GHz 50 GHz) line survey observations toward a carbon-chain emission peak in the Serpens South cluster-forming region with the extended Q-band (eQ)…
A 10.24-GHz-wide digital spectrometer array system for LMT-FINER: system design and laboratory performance verification
Masato Hagimoto, Akio Taniguchi, Yoichi Tamura +10
For efficient spectroscopic redshift identification of early galaxies in the northern hemisphere, we aim to combine the Large Millimeter Telescope (LMT) with a wide-band heterodyne…
FINER: Far-Infrared Nebular Emission Receiver for the Large Millimeter Telescope
Yoichi Tamura, Takeshi Sakai, Ryohei Kawabe +34
Unveiling the emergence and prevalence of massive/bright galaxies during the epoch of reionization and beyond, within the first 600 million years of the Universe, stands as a pivot…
An ultra wide-band, high-sensitivity Q-band receiver for single-dish telescopes, eQ: rest frequency determination of CCS ( = -) and SO ( = -), and high-redshift CO ( = 1-0) detection
Fumitaka Nakamura, Chau-Ching Chiong, Kotomi Taniguchi +16
We report on the development and commissioning of a new Q-band receiver for the Nobeyama 45-m telescope, covering 30--50 GHz with a receiver noise temperature of about 15 K. We nam…
ALMA 2D Super-resolution Imaging of Taurus-Auriga Protoplanetary Disks: Probing Statistical Properties of Disk Substructures
Masayuki Yamaguchi, Takayuki Muto, Takashi Tsukagoshi +6
In the past decade, ALMA observations of protoplanetary disks revealed various substructures including gaps and rings. Their origin may be probed through statistical studies on the…
Large-Scale Mapping Observations of DCN and DCO toward Orion KL
Kotomi Taniguchi, Prathap Rayalacheruvu, Teppei Yonetsu +14
We present emission maps (1.5'1.5' scale, corresponding to 0.18 pc) of the DCN () and DCO () lines in the 2 mm band toward the Orion KL region obtained wi…
ALMA Deep Field in SSA22: Blindly Detected CO Emitters and [CII] Emitter Candidates
N. H. Hayatsu, Y. Matsuda, H. Umehata +21
We report the identification of four millimeter line emitting galaxies with the Atacama Large Milli/submillimeter Array (ALMA) in SSA22 Field (ADF22). We analyze the ALMA 1.1 mm su…
The Sunyaev-Zel'dovich Effect at Five Arc-seconds: RXJ1347.5-1145 Imaged by ALMA
T. Kitayama, S. Ueda, S. Takakuwa +12
We present the first image of the thermal Sunyaev-Zel'dovich effect (SZE) obtained by the Atacama Large Millimeter/submillimeter Array (ALMA). Combining 7-m and 12-m arrays in Band…
Initial Results from the Nobeyama Molecular Gas Observations of Distant Bright Galaxies
D. Iono, B. Hatsukade, K. Kohno +37
We present initial results from the CO survey toward high redshift galaxies using the Nobeyama 45m telescope. Using the new wide bandwidth spectrometer equipped with a two-beam SIS…
ASTE CO(3--2) Observations of the Southern Barred Spiral Galaxy NGC 986: a Large Gaseous Bar Filled with Dense Molecular Medium
K. Kohno, T. Tosaki, R. Miura +20
We present CO(3-2) emission observations toward the 3'x3' (or 20x20kpc at a distance of 23Mpc) region of the southern barred spiral galaxy NGC 986 using the Atacama Submillimeter T…