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Accepted Proposals for Semester S23A

The Call for Proposals for Semester S23A received 94 and 1 submitted proposals for the Normal and Intensive Programs, respectively, requesting a total of 216.15 nights. After screening by TAC, 91.65 (including 10 ToO) nights were allocated to the following 44 proposals. In addition, 17.5 nights are assigned to IRD SSP Project, 3.85 nights are assigned to Service Program observations, 10.5 nights are assigned to four on-going Intensive Programs: S20B-097I(8.5 nights), S21A-114I(2 nights).

ID PI Proposal Title Inst Nts Abstract Link
S23A-001 Yuichi Harikane Spectroscopy of the Most UV-Luminous Galaxies at z~7 LRIS(Keck) 2 abstract
S23A-003 Hisakazu Uchiyama Has Galaxy Mass Assembly been Encouraged in the Most Overdense Region at z~5 ? FOCAS 2 abstract
S23A-006 Rhythm Shimakawa Emission-line Mapping in a Protocluster at z=3 Fed by Inspiraling Cold Streams MOIRCS 1.5 abstract
S23A-011 Zhaoran Liu A deg.-scale pair NB imaging of Balmer decrement across a z~0.9 supercluster MOIRCS&HSC-Q 1.5+0.75 abstract
S23A-014 Taichi Uyama Identifying the hydrogen emissions from the protoplanet AB Aur b VAMPIRES+SCExAO+NGS-AO 0.5 abstract
S23A-016 Michitoshi Yoshida Optical—infrared follow-up observations of gravitational wave sources HSC/FOCAS/MOIRCS/IRCS/HDS 5 ToO abstract
S23A-017 Tadayuki Kodama Hunting massive monsters in a proto-cluster at z=5.3 with the new K4 filter MOIRCS 3 abstract
S23A-018 Zhiying Mao Spectroscopic confirmation and characterisation of galaxy quenching at 0.5<z<1 FOCAS 3 abstract
S23A-021 Noriyuki Matsunaga Mapping the present-day Phosphorus distribution in the Milky Way IRD+NGS-AO 1 abstract
S23A-023 Keiichi Maeda Exploring the Origins of the Diversity Zoo of Thermonuclear Explosions FOCAS 1.5 abstract
S23A-024 Keiichi Maeda Hunting for Infant Supernova Spectra GMOS(Gemini-N) 0.81 abstract
S23A-025 Shigeo Kimura Search for Optical Counterparts of Cosmic High-Energy Neutrinos HSC&GMOS(Gemini-NorS) 2 ToO+1 abstract
S23A-027 Takahiro Kanai Spectroscopic Confirmations of Very low-mass Objects in nearby SFRs MOIRCS 2 abstract
S23A-029 Kento Masuda High-Dispersion Spectroscopy of Close Twins from Gaia DR3 HDS&IRD+NGS-AO 2+0.5 abstract
S23A-035 Takashi Murayama Exploring the triggering nuclear activity in Seyfert galaxies HSC-Q 2.5 abstract
S23A-036 Hikaru Fukuchi Spectroscopic follow-up of radio-loud dust obscured galaxies FOCAS 2 abstract
S23A-038 Thayne Currie Characterization of a New, Benchmark Directly-Imaged Exoplanet with SCExAO-CHARIS (resubmission) CHARIS+SCExAO+NGS-AO 1.5 abstract
S23A-040 Miho Ishigaki Ultra-deep HSC photometry of NGC 5466 tidal tails HSC-Q 0.3 abstract
S23A-041 Takashi Moriya Exploring the long-timescale transient frontier with HSC - Season 7 HSC-Q 0.9 abstract
S23A-042 Satoshi Kikuta Constraining AGN triggering through multiscale clustering analysis II HSC-Q 0.9 abstract
S23A-043 Nozomu Tominaga High-cadence transient survey: Variations of last moment of massive stars HSC&GMOS(Gemini-N) 3+1 abstract
S23A-047 Fumi Yoshida Formation of the Outer Solar System — an Icy Legacy: Phase II (FOSSIL II) HSC 4 abstract
S23A-052 Kohki Uno Constraints on Radiation Mechanisms of Optical/UV TDEs with Polarimetry FOCAS 2 ToO abstract
S23A-055 Moka Nishigaki JWST Objects with Characteristic 1—5μm Colors Similar to PopIII at z~ 5 FOCAS 1 abstract
S23A-056 Toru Misawa A carbon-enhanced Lyman limit system: A new window on the first stars? HDS 2 abstract
S23A-058 Akatoki Noboriguchi Measurement of SMBH mass and redshift for X-ray detected dust-obscured galaxies (DOGs). FOCAS 1.5 abstract
S23A-059 Teruyuki Hirano Doppler Observation Campaign for Transiting Objects around Rookie stars IRD+NGS-AO 2.5 abstract
S23A-060 Wako Aoki Nitrogen abundances in unevolved very metal-poor stars HDS 2 abstract
S23A-063 Takuma Suda Probing the early chemical evolution of the Galaxy with very metal poor stars. HDS 1 abstract
S23A-064 Rikako Ishimoto What causes the patchy reionization? III HSC-Q 2.5 abstract
S23A-066 Annette Ferguson Completing a Search for the Missing Stellar Halo of M101 with HSC HSC-Q 1.3 abstract
S23A-067 Norio Narita * Subaru IRD TESS Intensive Follow-up Project II (Completion) IRD+NGS-AO 12.5 abstract
S23A-069 Rokas Zemaitis The Interaction History of the M81 Group: Deciphering the Role of F8D1 HSC-Q 0.5 abstract
S23A-073 Thayne Currie Second-Epoch Confirmation of New Directly-Imaged Planet Candidates Around Accelerating Stars CHARIS+SCExAO+NGS-AO 1.5 abstract
S23A-077 Xiaoyang Chen Mechanism behind co-existence of extreme outflows and starbursts in ULIRGs GMOS(N) 0.19 abstract
S23A-079 Ana Jimenez-Gallardo An IFU view of feedback processes in powerful radio galaxies FOCAS 1 abstract
S23A-080 Harold A Pena Herazo Extending the MURALES Survey in the Northern Hemisphere FOCAS 3 abstract
S23A-081 Takanori Sakamoto Short GRBs as a Key to Understand Population of Merging Neutron Stars FOCAS/HSC/IRCS+NGS-AO 1 ToO abstract
S23A-085 Julien Lozi Probing the physics of mass loss: μ Cephei's dust formation region VAMPIRES+SCExAO+NGS-AO 0.5 abstract
S23A-089 Jun Toshikawa Exploring environmental dependence of galaxy properties at z>~3 FOCAS 3 abstract
S23A-090 Koki Kakiichi COSMOGRAPHY: COSMOS Tomographic Evolution Survey Across z~3-6 DEIMOS(Keck) 2 abstract
S23A-092 Jose Manuel Perez-Martinez Revealing the hidden type-2 AGN population in two distinct z>2 protoclusters MOSFIRE(Keck)&MOIRCS 1+1 abstract
S23A-094 Nao Suzuki Spectroscopic Follow-up of HSC-HST Observed Type Ia Supernovae FOCAS 2 abstract
S23A-096 Jun Hashimoto Probing Gas Giant Planet Formation around Very Low Mass Star IRCS+NGS-AO 0.5 abstract

The instruments and nights written in italics are those of Gemini or Keck Telescopes, with which we have time-exchange programs.

  • This proposal has been accepted in the category of Intensive Program, and will be assigned 12.5 nights also for S23B as well.

NOTE

In order to compensate for surplus telescope times, which resulted from the postponement of TUE works for HSC, two backup proposals (see 1 below) were newly accepted, and supplemental nights were added to the already accepted proposal (see 2 below).

*1
S23A-083, Yui Kasagi et al.,
Search for a Planetary-mass Companion around a Brown Dwarf
IRD+NGS-AO, 1 night

S23A-062N, Tomoki Morokuma et al.,
Optical Follow-Up Spectroscopy for Drastically Fading Quasars
FOCAS, 1.5 night

*2
S23A-023N, Keiichi Maeda et al.,
Exploring the Origins of the Diversity Zoo of Thermonuclear Explosions
FOCAS, 0.5 night

S23A-063N, Takuma Suda, Takuma
Probing the early chemical evolution of the Galaxy with very metal poor stars
HDS, 1 night

Service Programs Conducted in Semester S23A

The following proposals were conducted in S23A as Service Programs.

ID PI Proposal Title Inst Achievement
S23A-101S Haruka Kusakabe Triple NB mapping of HI and AGN for HS1700 protocluster: BB Compensation MOIRCS 100%
S23A-104S Jun Hashimoto Molecular Mapping of Young Embedded Planet IRCS+NGS-AO 100%
S23A-109S Takahiro Kanai A Subaru/MOIRCS Imaging survey of Very Low-mass Objects in W40 MOIRCS 100%
S23A-111S Naoki Yonekura Massive Galaxy Formation along the Large-Scale Structure of LAEs at z=2.39 MOIRCS 50%
S23A-112S Ronaldo Laishram Star-forming activities in the most overdense region of DEEP 2-3 field at z~1.5 MOIRCS 100%
S23A-116S Wako Aoki Low-alpha metal-poor star to search for signature of pair-instability supernovae HDS 5%
S23A-117S Tomoki Morokuma NIR Imaging of A Shutting-Down-Quasar Host Galaxy MOIRCS 54%
S23A-118S Noriaki Arima Host galaxy identification of a second-duration optical transient candidate FOCAS 93%
S23A-119S Tadafumi Matsuno Bright Extremely metal-poor stars from the Gaia DR3 HDS 85%
S23A-121S Mariko Kubo The earliest giant ellipticals in a protocluster at z~5 MOIRCS 100%

updated on July 8, 2025