T. Sakai

发表

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). V. Deuterated Molecules in the 70 μm Dark IRDC G14.492-00.139

Qizhou Zhang, N. Sakai, N. Izumi, 2021, The Astrophysical Journal.

DNC/HNC and N2D+/N2H+ ratios in high-mass star-forming cores

N. Sakai, T. Sakai, K. Furuya, 2014, 1402.2770.

ALMA OBSERVATIONS OF THE IRDC CLUMP G34.43+00.24 MM3: HOT CORE AND MOLECULAR OUTFLOWS

J. Foster, N. Sakai, J. Jackson, 2013, 1309.2804.

DETECTION OF TWO CARBON-CHAIN-RICH CORES: CB130-3 AND L673-SMM4

N. Sakai, T. Hirota, S. Yamamoto, 2011, 1105.0081.

ALMA OBSERVATIONS OF THE IRDC CLUMP G34.43+00.24 MM3: DNC/HNC RATIO

J. Foster, N. Sakai, J. Jackson, 2015, 1503.01827.

A Molecular Line Observation toward Massive Clumps Associated with Infrared Dark Clouds

N. Sakai, K. Kamegai, S. Shiba, 2008, 0802.3030.

DENSE MOLECULAR CLUMPS ASSOCIATED WITH THE LARGE MAGELLANIC CLOUD SUPERGIANT SHELLS LMC 4 AND LMC 5

A. Kawamura, Y. Fukui, T. Hasegawa, 2014, 1411.0097.

DENSE CLUMPS IN GIANT MOLECULAR CLOUDS IN THE LARGE MAGELLANIC CLOUD: DENSITY AND TEMPERATURE DERIVED FROM 13CO(J = 3–2) OBSERVATIONS

K. Kohno, A. Kawamura, M. Rubio, 2010, 1012.5037.

TENTATIVE DETECTION OF DEUTERATED METHANE TOWARD THE LOW-MASS PROTOSTAR IRAS 04368+2557 IN L1527

N. Sakai, T. Hirota, S. Yamamoto, 2012, 1209.1555.

A new off-point-less observing method for millimeter and submillimeter spectroscopy with a frequency-modulating local oscillator

K. Kohno, Y. Tamura, N. Kuno, 2019, 1911.02574.

Detection of C6H– toward the Low-Mass Protostar IRAS 04368+2557 in L1527

N. Sakai, Y. Osamura, S. Yamamoto, 2007 .

A 350 GHz SIS Receiver on the Nobeyama 10 m Submillimeter Telescope

H. Maezawa, Y. Sekimoto, Tetsuya Ito, 2001 .

Exploration of Southern Sky with Atacama Submillimeter Telescope Experiment (ASTE)

S. Asayama, Y. Sekimoto, M. Sugimoto, 1997 .

Observation of the C I 3P2-3P1 Line toward the Orion Kleinmann-Low Region

H. Maezawa, Y. Sekimoto, Tetsuya Ito, 2001 .

Low-noise 1.5 THz waveguide-type hot-electron bolometer mixers using relatively thick NbTiN superconducting film

H. Maezawa, N. Sakai, S. Yamamoto, 2015 .

Searching for chameleon-like scalar fields with the ammonia method , II. Mapping of cold molecular cores in NH3 and HC3N lines

P. Molaro, C. Henkel, T. Sakai, 2009, 1008.1160.

Submillimeter-Wave C I Spectral Lines from the NGC 1333 Region

H. Maezawa, Tetsuya Ito, K. Kamegai, 2004 .

Complex organic molecules in an early stage of protostellar evolution

N. Sakai, S. Yamamoto, T. Sakai, 2008 .

HCN J = 4–3, HNC J = 1–0, H13CN J = 1–0, and HC3N J = 10–9 Maps of Galactic Center Region. II. Physical Properties of Dense-gas Clumps and Probability of Star Formation

K. Kamegai, Kunihiko Tanaka, T. Sakai, 2020, The Astrophysical Journal.

Hierarchical fragmentation and collapse signatures in a high-mass starless region

R. Smith, T. Henning, H. Beuther, 2015, 1508.01540.

Fragmentation and dynamical collapse of the starless high-mass star-forming region IRDC 18310-4

O. Krause, R. Smith, T. Henning, 2013, 1304.6820.

Sky noise removal for submillimeter spectroscopy based on statistical methods

A. Endo, K. Kohno, Y. Tamura, 2020 .

Extremely Strong 13CO J = 3→2 Line in the ``Water Fountain'' IRAS 16342−3814: Evidence for the Hot-Bottom Burning

Engineering, Astronomy, Chinese Academy of Sciences, 2012, 1204.2899.

Development of a Waveguide-Type Dual- Polarization Sideband-Separating SIS Receiver System in 100 GHz Band for the NRO 45-m Telescope

S. Asayama, R. Kawabe, K. Kimura, 2008 .

Nobeyama Survey of Inward Motions toward Cores in Orion Identified by SCUBA-2

M. Juvela, G. Fuller, Chau-Ching Chiong, 2022, The Astrophysical Journal.

Misaligned Rotations of the Envelope, Outflow, and Disks in the Multiple Protostellar System of VLA 1623–2417: FAUST. III

J. Pineda, L. Testi, P. Caselli, 2022, The Astrophysical Journal.

SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution – survey description and compact source catalogue

L. V. Tóth, Manash R. Samal, P. McGehee, 2019, Monthly Notices of the Royal Astronomical Society.

FAUST. II. Discovery of a Secondary Outflow in IRAS 15398−3359: Variability in Outflow Direction during the Earliest Stage of Star Formation?

J. Pineda, L. Testi, P. Caselli, 2021, 2101.07404.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). IV. Star Formation Signatures in G023.477

Y. Contreras, Qizhou Zhang, H. Beuther, 2021, The Astrophysical Journal.

SPECTRAL-LINE SURVEY AT MILLIMETER AND SUBMILLIMETER WAVELENGTHS TOWARD AN OUTFLOW-SHOCKED REGION, OMC 2-FIR 4

N. Sakai, R. Kawabe, F. Nakamura, 2015, 1511.00565.

Rotation in the NGC 1333 IRAS 4C Outflow

N. Sakai, C. Ceccarelli, B. Lefloch, 2018, The Astrophysical Journal.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). III. A Young Molecular Outflow Driven by a Decelerating Jet

Y. Contreras, Qizhou Zhang, Shanghuo Li, 2021, 2104.02625.

Atomic Carbon and CO Isotope Emission in the Vicinity of DR 15

H. Maezawa, Y. Sekimoto, Tetsuya Ito, 2001, astro-ph/0105526.

ASTE CO(3-2) Observations of the Southern Barred Spiral Galaxy NGC 986: a Large Gaseous Bar Filled with a Dense Molecular Medium

D. Iono, A. Endo, T. Sawada, 2008, 0805.1491.

ASTE CO (3-2) Observations of the Barred Spiral Galaxy M 83: I. Correlation between CO (3-2)/ CO (1-0) Ratios and Star Formation Efficiencies

A. Endo, K. Kohno, K. Kamegai, 2007, astro-ph/0701759.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). VI. The Core-scale CO Depletion

Qizhou Zhang, D. Allingham, Shanghuo Li, 2022, The Astrophysical Journal.

The 3 mm Spectral Line Survey toward the Lynds 1157 B1 Shocked Region. I. Data

N. Sakai, S. Yamamoto, T. Sakai, 2012 .

Magnetic fields at the onset of high-mass star formation

R. Smith, A. Walsh, T. Henning, 2018, Astronomy & Astrophysics.

DNC/HNC RATIO OF MASSIVE CLUMPS IN EARLY EVOLUTIONARY STAGES OF HIGH-MASS STAR FORMATION

N. Sakai, T. Hirota, S. Yamamoto, 2012, 1201.4430.

Chemical Survey toward Young Stellar Objects in the Perseus Molecular Cloud Complex

N. Sakai, C. Ceccarelli, B. Lefloch, 2018, The Astrophysical Journal Supplement Series.

DISCOVERY OF THE SECOND WARM CARBON-CHAIN-CHEMISTRY SOURCE, IRAS15398 − 3359 IN LUPUS

N. Sakai, M. Burton, T. Hirota, 2009 .

Exploring the 100 au Scale Structure of the Protobinary System NGC 2264 CMM3 with ALMA

N. Sakai, T. Hirota, S. Yamamoto, 2021, The Astrophysical Journal.

Digging into the Interior of Hot Cores with ALMA (DIHCA). II. Exploring the Inner Binary (Multiple) System Embedded in G335 MM1 ALMA1

Qizhou Zhang, H. Chen, Shanghuo Li, 2022, 2203.04333.

Molecular Cloud Cores with High Deuterium Fractions: Nobeyama Mapping Survey

M. Juvela, G. Fuller, C. Vastel, 2021, The Astrophysical Journal Supplement Series.

Astrochemical Properties of Planck Cold Clumps

L. V. Tóth, M. Juvela, G. Fuller, 2016, 1612.00488.

Searching for Chameleon-Like Scalar Fields

P. Molaro, C. Henkel, T. Sakai, 2010, 1012.0642.

A SURVEY OF MOLECULAR LINES TOWARD MASSIVE CLUMPS IN EARLY EVOLUTIONARY STAGES OF HIGH-MASS STAR FORMATION

N. Sakai, T. Hirota, S. Yamamoto, 2010 .

Detection of HCO[FORMULA][F][SUP]+[/SUP][INF]2[/INF][/F][/FORMULA] toward the Low-Mass Protostar IRAS 04368+2557 in L1527

N. Sakai, S. Yamamoto, T. Sakai, 2008 .

Detection of C6H– toward the Low-Mass Protostar IRAS 04368+2557 in L1527

N. Sakai, Y. Osamura, S. Yamamoto, 2007, 0801.4441.

ALMA Observations of the IRDC Clump G34.43+00.24 MM3: Complex Organic and Deuterated Molecules

N. Sakai, J. Jackson, P. Sanhueza, 2018, 1803.11357.

SPECTRAL LINE SURVEY TOWARD THE YOUNG MASSIVE PROTOSTAR NGC 2264 CMM3 IN THE 4 mm, 3 mm, AND 0.8 mm BANDS

N. Sakai, T. Hirota, S. Yamamoto, 2015, 1507.04958.

Production Pathways of CCS and CCCS Inferred from Their 13C Isotopic Species

N. Sakai, Y. Osamura, S. Yamamoto, 2007 .

Change in the chemical composition of infalling gas forming a disk around a protostar

C. Vastel, N. Sakai, E. Caux, 2014, Nature.

Physical and Chemical Properties of Massive Clumps in the AFGL 333 Cloud

T. Oka, S. Yamamoto, T. Sakai, 2007 .

SUBARCSECOND ANALYSIS OF THE INFALLING-ROTATING ENVELOPE AROUND THE CLASS I PROTOSTAR IRAS 04365+2535

C. Vastel, N. Sakai, E. Caux, 2016, 1603.08608.

THE DEUTERIUM FRACTION IN MASSIVE STARLESS CORES AND DYNAMICAL IMPLICATIONS

P. Caselli, T. Pillai, F. Nakamura, 2015, 1509.08684.

Sulfur-bearing Species Tracing the Disk/Envelope System in the Class I Protostellar Source Elias 29

C. Vastel, N. Sakai, E. Caux, 2019, The Astrophysical Journal.

An unbiased spectral line survey observation toward the low-mass star-forming region L1527

N. Sakai, Y. Nishimura, S. Yamamoto, 2019, Publications of the Astronomical Society of Japan.

DISCOVERY OF A HOT CORINO IN THE BOK GLOBULE B335

C. Vastel, N. Sakai, E. Caux, 2016, 1610.03942.

Early Results of the 3 mm Spectral Line Survey toward the Lynds 1157 B1 Shocked Region

T. Umemoto, N. Sakai, T. Millar, 2011 .

DISTRIBUTIONS OF CARBON-CHAIN MOLECULES IN L1527

N. Sakai, T. Hirota, S. Yamamoto, 2010 .

Abundant Carbon-Chain Molecules toward the Low-Mass Protostar IRAS 04368+2557 in L1527

N. Sakai, T. Hirota, S. Yamamoto, 2008 .

DISTRIBUTION OF CH3OH IN NGC 1333 IRAS4B

N. Sakai, C. Ceccarelli, S. Yamamoto, 2012 .

Detection of HCOOCH3 toward a Low-Mass Protostar, NGC 1333 IRAS 4B

N. Sakai, S. Yamamoto, T. Sakai, 2006 .

A SUBSTELLAR-MASS PROTOSTAR AND ITS OUTFLOW OF IRAS 15398−3359 REVEALED BY SUBARCSECOND-RESOLUTION OBSERVATIONS of H2CO AND CCH

N. Sakai, J. Jørgensen, S. Bisschop, 2014, 1410.5945.

COMPACT MOLECULAR OUTFLOW FROM NGC 2264 CMM3: A CANDIDATE FOR VERY YOUNG HIGH-MASS PROTOSTAR

N. Sakai, S. Yamamoto, T. Sakai, 2011 .

Laboratory Measurement of Millimeter-wave Transitions of 13CH2DOH for Astronomical Use

N. Sakai, T. Sakai, S. Zeng, 2022, The Astrophysical Journal.

ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines

M. Juvela, G. Fuller, I. Ristorcelli, 2020, The Astrophysical Journal.

Methyl Formate in the NGC 2264 IRS 1 Region

N. Sakai, S. Yamamoto, T. Sakai, 2007 .

Chemical and Physical Characterization of the Isolated Protostellar Source CB68: FAUST IV

L. Testi, P. Caselli, H. Liu, 2022, The Astrophysical Journal.

Detection of phosphorus nitride in the Lynds 1157 B1 shocked region

N. Sakai, S. Yamamoto, T. Sakai, 2011 .

FAUST I. The hot corino at the heart of the prototypical Class I protostar L1551 IRS5

D. S. Cox, J. Pineda, L. Testi, 2020, Monthly Notices of the Royal Astronomical Society: Letters.

A CHEMICAL VIEW OF PROTOSTELLAR-DISK FORMATION IN L1527

C. Vastel, N. Sakai, E. Caux, 2014 .

Deuterium Fractionation Survey Toward Protostellar Sources in the Perseus Molecular Cloud: HNC Case

N. Sakai, C. Ceccarelli, B. Lefloch, 2018, The Astrophysical Journal.

Anomalous 13C isotope abundances in C3S and C4H observed toward the cold interstellar cloud, Taurus Molecular Cloud-1.

N. Sakai, S. Shiba, S. Yamamoto, 2013, The journal of physical chemistry. A.

DEUTERATED MOLECULES IN WARM CARBON CHAIN CHEMISTRY: THE L1527 CASE

N. Sakai, T. Hirota, S. Yamamoto, 2009 .

Spectrometer Using superconductor MIxer Receiver (SUMIRE) for laboratory submillimeter spectroscopy

N. Sakai, T. Sakai, Yoshimasa Watanabe, 2021, 2101.02960.

Vertical structure of the transition zone from infalling rotating envelope to disc in the Class 0 protostar, IRAS 04368+2557

C. Vastel, N. Sakai, E. Caux, 2017, 1703.07931.

Tentative Detection of C4H− toward the Low-Mass Protostar IRAS 04368+2557 in L1527

N. Sakai, S. Yamamoto, T. Sakai, 2008 .

Submillimeter-wave Observations of Complex Organic Molecules in Southern Massive Star Forming Regions

N. Sakai, K. Kamegai, T. Hirota, 2012, Proceedings of the International Astronomical Union.

Peculiar Carbon-Chain Chemistry in Low-Mass Star Forming Regions

N. Sakai, T. Hirota, S. Yamamoto, 2011 .

ASTE CO (3-2) Observations of the Barred Spiral Galaxy M 83: I. Correlation between CO (3-2)/ CO (1-0) Ratios and Star Formation Efficiencies

Takeshi Sakai, Kotaro Kohno, Kunihiko Tanaka, 2007, astro-ph/0701759.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). VII. Chemistry of Embedded Dense Cores

Qizhou Zhang, D. Allingham, Shanghuo Li, 2022, The Astrophysical Journal.

SCOPE Survey Description 1 SCOPE :

L. V. Tóth, Manash R. Samal, P. McGehee, 2019 .

The onset of high-mass star formation in the direct vicinity of the Galactic mini-starburst W43

O. Krause, F. Schuller, T. Henning, 2011, 1112.3543.

Depletion of 15N in the center of L1544: Early transition from atomic to molecular nitrogen?

S. Yamamoto, T. Sakai, K. Furuya, 2018, Astronomy & Astrophysics.

A Search for CO (J = 3–2) Emission from the Host Galaxy of GRB 980425 with the Atacama Submillimeter Telescope Experiment

Takeshi Sakai, Kotaro Kohno, P. M. Vreeswijk, 2007, 0704.3654.

The Perseus ALMA Chemistry Survey (PEACHES). I. The Complex Organic Molecules in Perseus Embedded Protostars

N. Sakai, C. Ceccarelli, B. Lefloch, 2021, 2101.11009.

A New 100-GHz Band Front-End System with a Waveguide-Type Dual-Polarization Sideband-Separating SIS Receiver for the NRO 45-m Radio Telescope

Takeshi Sakai, Kimihiro Kimura, Hideo Ogawa, 2008, 0804.0480.

Molecular Cloud Cores with a High Deuterium Fraction: Nobeyama Single-pointing Survey

L. V. Tóth, M. Juvela, G. Fuller, 2020, The Astrophysical Journal Supplement Series.

Atomic Carbon in the AFGL 333 Cloud

T. Oka, S. Yamamoto, T. Sakai, 2006 .

The Mt. Fuji submillimeter-wave telescope

Masatoshi Ohishi, Yutaro Sekimoto, Takeshi Sakai, 2000, Astronomical Telescopes and Instrumentation.

L483: Warm Carbon-chain Chemistry Source Harboring Hot Corino Activity

C. Vastel, N. Sakai, E. Caux, 2017, 1703.03653.

Line Survey of L1157 B1 Shocked Region

N. Sakai, S. Yamamoto, T. Sakai, 2011 .

LONG CARBON-CHAIN MOLECULES AND THEIR ANIONS IN THE STARLESS CORE, LUPUS-1A

N. Sakai, T. Hirota, S. Yamamoto, 2010 .

Gravity-driven Magnetic Field at ∼1000 au Scales in High-mass Star Formation

P. Koch, Qizhou Zhang, H. Chen, 2021, 2106.03866.

ALMA OBSERVATIONS OF THE IRDC CLUMP G34.43+00.24 MM3: 278 GHz CLASS I METHANOL MASERS

J. Foster, N. Sakai, J. Jackson, 2014, 1409.7143.

DISTRIBUTED LOW-MASS STAR FORMATION IN THE IRDC G34.43+00.24

J. Foster, J. Rathborne, N. Sakai, 2014, 1407.6003.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). II. Molecular Outflows in the Extreme Early Stages of Protocluster Formation

Y. Contreras, Qizhou Zhang, Shanghuo Li, 2020, The Astrophysical Journal.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). I. Pilot Survey: Clump Fragmentation

Y. Contreras, G. Garay, Qizhou Zhang, 2019, The Astrophysical Journal.

Infall Signatures in a Prestellar Core Embedded in the High-mass 70 μm Dark IRDC G331.372-00.116

J. Rathborne, S. Longmore, Y. Contreras, 2018, The Astrophysical Journal.

Initial Results from Nobeyama Molecular Gas Observations of Distant Bright Galaxies

K. Kimura, H. Iwashita, K. Motohara, 2012, 1206.3840.

Kinematic structure of massive star-forming regions - I. Accretion along filaments

O. Krause, T. Henning, H. Beuther, 2014, 1402.0021.

HCN J = 4–3, HNC J = 1–0, H13CN J = 1–0, and HC3N J = 10–9 Maps of the Galactic Center Region. I. Spatially Resolved Measurements of Physical Conditions and Chemical Composition

K. Kamegai, Kunihiko Tanaka, T. Sakai, 2018, The Astrophysical Journal Supplement Series.

Distribution of the [C I] Emission in the ρ Ophiuchi Dark Cloud

H. Maezawa, Y. Sekimoto, Tetsuya Ito, 2003 .

Discovery of Striking Difference of Molecular-emission-line Richness in the Potential Proto-binary System NGC 2264 CMM3

N. Sakai, T. Hirota, S. Yamamoto, 2017, 1708.07582.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). IX. Physical Properties and Spatial Distribution of Cores in IRDCs

G. Garay, Qizhou Zhang, H. Beuther, 2023, The Astrophysical Journal.

Digging into the Interior of Hot Cores with ALMA (DIHCA). I. Dissecting the High-mass Star-forming Core G335.579-0.292 MM1

Qizhou Zhang, H. Chen, Benjamin Wu, 2021, 2101.08284.

An Experimental Study of Submillimeter-Wave Horn Antennae for a Submillimeter-Wave Array

Toshiaki Matsunaga, Mayumi Matsunaga, Takeshi Sakai, 2003 .

Abundance anomaly of the 13 C species of CCH

N. Sakai, S. Yamamoto, T. Sakai, 2010 .

EXTENSIVE [C i] MAPPING TOWARD THE ORION-A GIANT MOLECULAR CLOUD

K. Kohno, R. Kawabe, T. Oshima, 2013, 1308.1036.

Development of a New MultiBeam Array 2 SB Receiver in 100 GHz Band for the NRO 45m Radio Telescope

S. Asayama, R. Kawabe, H. Ogawa, 2022 .

Laboratory Measurement of CH2DOH Line Intensities in the Millimeter-wave Region

N. Sakai, T. Sakai, S. Zeng, 2023, The Astrophysical Journal.

Laboratory Measurement of Millimeter-wave Transitions of 13CH2DOH for Astronomical Use

N. Sakai, T. Sakai, S. Zeng, 2022, The Astrophysical Journal.

ATOMIC CARBON IN THE W 3 GIANT MOLECULAR CLOUD

T. Oka, S. Yamamoto, T. Sakai, 2005 .

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). III. A Young Molecular Outflow Driven by a Decelerating Jet

Y. Contreras, Qizhou Zhang, Shanghuo Li, 2021, The Astrophysical Journal.

The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). VII. Chemistry of Embedded Dense Cores

Qizhou Zhang, D. Allingham, Shanghuo Li, 2022, The Astrophysical Journal.

Series-connected array of superconductor–insulator–superconductor junctions in the 100 GHz-band heterodyne mixer for FOREST on the Nobeyama 45 m telescope

Takeshi Sakai, Hiroyuki Iwashita, Takashi Noguchi, 2018, Publications of the Astronomical Society of Japan.

350 GHz Sideband Separating Receiver for ASTE

S. Asayama, A. Endo, K. Kohno, 2008 .

Development of the Measurement System of Image Rejection Ratio for the Sideband-Separating Receiver

Takeshi Sakai, Hideo Ogawa, Taku Nakajima, 2009 .