3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper II. Key Scientific Mission: Wide-Field Cosmology and Galaxy Evolution
Abstract
The 3.5-meter Segmented-Mirror Robotic Space Telescope uses an image slicer for all spectroscopic observations. The planning baseline uses R ≃ 1000 for the wide survey and retains selectable R ≃ 5000 bands for precision line measurements. The central science case is a dense emission-line galaxy redshift survey for baryon acoustic oscillations and redshift-space distortions. Supernova and quasar programs exploit the stability, multiplexing, and repeatability of space operations. The supernova tier measures rest-frame U and near-ultraviolet magnitudes that separate optical twins at subgroup precision to z ≃ 0.9--$1.1$ in standard visits and to z ≃ 1.3--$1.5$ in ten-hour stacks. Every wide-survey tile receives three spectroscopic orientations, and a joint scene reconstruction uses their different overlap geometries to recover the spectra. The flagship survey covers 100--300 deg2 and targets 106--3 × 106 emission-line galaxies. A deep pencil-beam tier and a supernova time-domain tier complement the wide survey. The same observations provide a census of ultra-diffuse and low-surface-brightness galaxies, map intracluster light, and test cold, self-interacting, and fuzzy dark matter through dwarf-galaxy structure and low-mass halo abundance.
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BibTeX
@misc{kim202635meter,
title = {{3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper II. Key Scientific Mission: Wide-Field Cosmology and Galaxy Evolution}},
author = {Juhan Kim and Yong-Woo Kang and Sang Hyun Lee and Jeong-Yeol Han and Sungwook E. Hong and Bongkon Moon and Donguk Song and Juhyung Kang and Myeong-Gu Park and Sang Chul Kim and Chung-Uk Lee and Sangmo Tony Sohn and Arman Shafieloo and David Parkinson and Hong Soo Park and Dohyeong Kim and Chan Park and Jungjoo Sohn and Young-Beom Jeon and Jong-Hak Woo and Hyung Mok Lee and Hong Bae Ann and Myungkook James Jee and Mansoo Choi and Changbom Park},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.02574},
eprint = {2609.02574},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02574},
}
RIS
TY - UNPB
TI - 3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper II. Key Scientific Mission: Wide-Field Cosmology and Galaxy Evolution
AU - Juhan Kim
AU - Yong-Woo Kang
AU - Sang Hyun Lee
AU - Jeong-Yeol Han
AU - Sungwook E. Hong
AU - Bongkon Moon
AU - Donguk Song
AU - Juhyung Kang
AU - Myeong-Gu Park
AU - Sang Chul Kim
AU - Chung-Uk Lee
AU - Sangmo Tony Sohn
AU - Arman Shafieloo
AU - David Parkinson
AU - Hong Soo Park
AU - Dohyeong Kim
AU - Chan Park
AU - Jungjoo Sohn
AU - Young-Beom Jeon
AU - Jong-Hak Woo
AU - Hyung Mok Lee
AU - Hong Bae Ann
AU - Myungkook James Jee
AU - Mansoo Choi
AU - Changbom Park
PY - 2026
DA - 2026/09/17
PB - arXiv
DO - 10.48550/arxiv.2609.02574
UR - https://arxiv.org/abs/2609.02574
AB - The 3.5-meter Segmented-Mirror Robotic Space Telescope uses an image slicer for all spectroscopic observations. The planning baseline uses R ≃ 1000 for the wide survey and retains selectable R ≃ 5000 bands for precision line measurements. The central science case is a dense emission-line galaxy redshift survey for baryon acoustic oscillations and redshift-space distortions. Supernova and quasar programs exploit the stability, multiplexing, and repeatability of space operations. The supernova tier measures rest-frame U and near-ultraviolet magnitudes that separate optical twins at subgroup precision to z ≃ 0.9--$1.1$ in standard visits and to z ≃ 1.3--$1.5$ in ten-hour stacks. Every wide-survey tile receives three spectroscopic orientations, and a joint scene reconstruction uses their different overlap geometries to recover the spectra. The flagship survey covers 100--300 deg^2 and targets 10^6--3 × 10^6 emission-line galaxies. A deep pencil-beam tier and a supernova time-domain tier complement the wide survey. The same observations provide a census of ultra-diffuse and low-surface-brightness galaxies, map intracluster light, and test cold, self-interacting, and fuzzy dark matter through dwarf-galaxy structure and low-mass halo abundance.
ER -