Subaru Hyper Suprime-Cam Survey of Cygnus OB2 Complex - I. Introduction, photometry, and source catalogue
- Title
- Subaru Hyper Suprime-Cam Survey of Cygnus OB2 Complex - I. Introduction, photometry, and source catalogue
- Creator
- Gupta S.; Jose J.; More S.; Das S.R.; Herczeg G.J.; Samal M.R.; Guo Z.; Prakash P.; Damian B.; Takami M.; Takahashi S.; Ogura K.; Terai T.; Pyo T.-S.
- Description
- Low-mass star formation inside massive clusters is crucial to understand the effect of cluster environment on processes like circumstellar disc evolution, planet, and brown dwarf formation. The young massive association of Cygnus OB2, with a strong feedback from massive stars, is an ideal target to study the effect of extreme environmental conditions on its extensive low-mass population. We aim to perform deep multiwavelength studies to understand the role of stellar feedback on the IMF, brown dwarf fraction and circumstellar disc properties in the region. We introduce here, the deepest and widest optical photometry of 1. diameter region centred at Cygnus OB2 in r2, i2, z, and Y-filters, using Subaru Hyper Suprime-Cam (HSC). This work presents the data reduction, source catalogue generation, data quality checks, and preliminary results about the pre-main sequence sources. We obtain 713 529 sources in total, with detection down to ?28, 27, 25.5, and 24.5 mag in r2, i2, z, and Y-band, respectively, which is ?3 - 5 mag deeper than the existing Pan-STARRS and GTC/OSIRIS photometry. We confirm the presence of a distinct pre-main sequence branch by statistical field subtraction of the central 18 arcmin region. We find the median age of the region as ?5 2 Myr with an average disc fraction of ?9 per cent. At this age, combined with A $ 6 - 8 mag, we detect sources down to a mass range of ?0.01-0.17 M. The deep HSC catalogue will serve as the groundwork for further studies on this prominent active young cluster. 2021 The Author(s).
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-508, No. 3, pp. 3388-3407.
- Date
- 2021-01-01
- Publisher
- Oxford University Press
- Subject
- catalogues; methods: observational; stars: imaging; stars: low-mass; stars: pre-main-sequence; techniques: photometric
- Coverage
- Gupta S., Indian Institute of Science Education and Research (IISER) Tirupati, Rami Reddy Nagar, Karakambadi Road, Mangalam (P.O.), Tirupati, 517 507, India; Jose J., Indian Institute of Science Education and Research (IISER) Tirupati, Rami Reddy Nagar, Karakambadi Road, Mangalam (P.O.), Tirupati, 517 507, India; More S., Inter University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune, 411007, India; Das S.R., Indian Institute of Science Education and Research (IISER) Tirupati, Rami Reddy Nagar, Karakambadi Road, Mangalam (P.O.), Tirupati, 517 507, India; Herczeg G.J., Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, Haidian Qu, Beijing, 100871, China; Samal M.R., Physical Research Laboratory (PRL), Navrangpura, Ahmedabad, Gujarat, 380 009, India; Guo Z., Centre for Astrophysics Research, University of Hertfordshire, Hatfield, AL10 9AB, United Kingdom; Prakash P., Indian Institute of Science Education and Research (IISER) Tirupati, Rami Reddy Nagar, Karakambadi Road, Mangalam (P.O.), Tirupati, 517 507, India; Damian B., Christ (Deemed to be University), Bangalore, 560029, India; Takami M., Institute of Astronomy and Astrophysics, Academia Sinica 11F of Astronomy-Mathematics Building, National Taiwan University, 10617, Taiwan; Takahashi S., Joint ALMA Observatory, Alonso de Cdova 3107, Vitacura, Santiago, 763 0355, Chile, NAOJ Chile, National Astronomical Observatory of Japan, Alonso de Cdova 3788, Office 61B, Vitacura, Santiago, 763 0492, Chile; Ogura K., Kokugakuin University, Higashi, Shibuya-ku, Tokyo, 150-8440, Japan; Terai T., Subaru Telescope, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 650 North Aohoku Place, Hilo, 96720, HI, United States; Pyo T.-S., Subaru Telescope, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 650 North Aohoku Place, Hilo, 96720, HI, United States, School of Mathematical and Physical Science, SOKENDAI, Graduate University for Advanced Studies, Hayama, Kanagawa, 240-0193, Japan
- Rights
- All Open Access; Bronze Open Access; Green Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Gupta S.; Jose J.; More S.; Das S.R.; Herczeg G.J.; Samal M.R.; Guo Z.; Prakash P.; Damian B.; Takami M.; Takahashi S.; Ogura K.; Terai T.; Pyo T.-S., “Subaru Hyper Suprime-Cam Survey of Cygnus OB2 Complex - I. Introduction, photometry, and source catalogue,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/15568.