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Start Over Author "Medezinski, Elinor" Journal publications of the astronomical society of japan
22 results on '"Medezinski, Elinor"'

2. Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data

Author

Hikage, Chiaki, primary, Oguri, Masamune, primary, Hamana, Takashi, primary, More, Surhud, primary, Mandelbaum, Rachel, primary, Takada, Masahiro, primary, Köhlinger, Fabian, primary, Miyatake, Hironao, primary, Nishizawa, Atsushi J, primary, Aihara, Hiroaki, primary, Armstrong, Robert, primary, Bosch, James, primary, Coupon, Jean, primary, Ducout, Anne, primary, Ho, Paul, primary, Hsieh, Bau-Ching, primary, Komiyama, Yutaka, primary, Lanusse, François, primary, Leauthaud, Alexie, primary, Lupton, Robert H, primary, Medezinski, Elinor, primary, Mineo, Sogo, primary, Miyama, Shoken, primary, Miyazaki, Satoshi, primary, Murata, Ryoma, primary, Murayama, Hitoshi, primary, Shirasaki, Masato, primary, Sifón, Cristóbal, primary, Simet, Melanie, primary, Speagle, Joshua, primary, Spergel, David N, primary, Strauss, Michael A, primary, Sugiyama, Naoshi, primary, Tanaka, Masayuki, primary, Utsumi, Yousuke, primary, Wang, Shiang-Yu, primary, and Yamada, Yoshihiko, primary

Published
2019
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3. Erratum to: Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field†

Author

Miyaoka, Keita, primary, Okabe, Nobuhiro, additional, Kitaguchi, Takao, additional, Oguri, Masamune, additional, Fukazawa, Yasushi, additional, Mandelbaum, Rachel, additional, Medezinski, Elinor, additional, Babazaki, Yasunori, additional, Nishizawa, Atsushi J, additional, Hamana, Takashi, additional, Lin, Yen-Ting, additional, Akamatsu, Hiroki, additional, Chiu, I-Non, additional, Fujita, Yutaka, additional, Ichinohe, Yuto, additional, Komiyama, Yutaka, additional, Sasaki, Toru, additional, Takizawa, Motokazu, additional, Ueda, Shutaro, additional, Umetsu, Keiichi, additional, Coupon, Jean, additional, Hikage, Chiaki, additional, Hoshino, Akio, additional, Leauthaud, Alexie, additional, Matsushita, Kyoko, additional, Mitsuishi, Ikuyuki, additional, Miyatake, Hironao, additional, Miyazaki, Satoshi, additional, More, Surhud, additional, Nakazawa, Kazuhiro, additional, Ota, Naomi, additional, Sato, Kousuke, additional, Spergel, David, additional, Tamura, Takayuki, additional, Tanaka, Masayuki, additional, Tanaka, Manobu M, additional, and Utsumi, Yousuke, additional

Published
2018
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4. Source selection for cluster weak lensing measurements in the Hyper Suprime-Cam survey

Author

Medezinski, Elinor, primary, Oguri, Masamune, additional, Nishizawa, Atsushi J, additional, Speagle, Joshua S, additional, Miyatake, Hironao, additional, Umetsu, Keiichi, additional, Leauthaud, Alexie, additional, Murata, Ryoma, additional, Mandelbaum, Rachel, additional, Sifón, Cristóbal, additional, Strauss, Michael A, additional, Huang, Song, additional, Simet, Melanie, additional, Okabe, Nobuhiro, additional, Tanaka, Masayuki, additional, and Komiyama, Yutaka, additional

Published
2018
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6. The first-year shear catalog of the Subaru Hyper Suprime-Cam Subaru Strategic Program Survey

Author

Mandelbaum, Rachel, primary, Miyatake, Hironao, additional, Hamana, Takashi, additional, Oguri, Masamune, additional, Simet, Melanie, additional, Armstrong, Robert, additional, Bosch, James, additional, Murata, Ryoma, additional, Lanusse, François, additional, Leauthaud, Alexie, additional, Coupon, Jean, additional, More, Surhud, additional, Takada, Masahiro, additional, Miyazaki, Satoshi, additional, Speagle, Joshua S, additional, Shirasaki, Masato, additional, Sifón, Cristóbal, additional, Huang, Song, additional, Nishizawa, Atsushi J, additional, Medezinski, Elinor, additional, Okura, Yuki, additional, Okabe, Nobuhiro, additional, Czakon, Nicole, additional, Takahashi, Ryuichi, additional, Coulton, William R, additional, Hikage, Chiaki, additional, Komiyama, Yutaka, additional, Lupton, Robert H, additional, Strauss, Michael A, additional, Tanaka, Masayuki, additional, and Utsumi, Yousuke, additional

Published
2017
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7. Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field†

Author

Miyaoka, Keita, primary, Okabe, Nobuhiro, additional, Kitaguchi, Takao, additional, Oguri, Masamune, additional, Fukazawa, Yasushi, additional, Mandelbaum, Rachel, additional, Medezinski, Elinor, additional, Babazaki, Yasunori, additional, Nishizawa, Atsushi J, additional, Hamana, Takashi, additional, Lin, Yen-Ting, additional, Akamatsu, Hiroki, additional, Chiu, I-Non, additional, Fujita, Yutaka, additional, Ichinohe, Yuto, additional, Komiyama, Yutaka, additional, Sasaki, Toru, additional, Takizawa, Motokazu, additional, Ueda, Shutaro, additional, Umetsu, Keiichi, additional, Coupon, Jean, additional, Hikage, Chiaki, additional, Hoshino, Akio, additional, Leauthaud, Alexie, additional, Matsushita, Kyoko, additional, Mitsuishi, Ikuyuki, additional, Miyatake, Hironao, additional, Miyazaki, Satoshi, additional, More, Surhud, additional, Nakazawa, Kazuhiro, additional, Ota, Naomi, additional, Sato, Kousuke, additional, Spergel, David, additional, Tamura, Takayuki, additional, Tanaka, Masayuki, additional, Tanaka, Manobu M, additional, and Utsumi, Yousuke, additional

Published
2017
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8. A large sample of shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S16A Wide field mass maps

Author

Miyazaki, Satoshi, primary, Oguri, Masamune, additional, Hamana, Takashi, additional, Shirasaki, Masato, additional, Koike, Michitaro, additional, Komiyama, Yutaka, additional, Umetsu, Keiichi, additional, Utsumi, Yousuke, additional, Okabe, Nobuhiro, additional, More, Surhud, additional, Medezinski, Elinor, additional, Lin, Yen-Ting, additional, Miyatake, Hironao, additional, Murayama, Hitoshi, additional, Ota, Naomi, additional, and Mitsuishi, Ikuyuki, additional

Published
2017
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9. Planck Sunyaev–Zel’dovich cluster mass calibration using Hyper Suprime-Cam weak lensing

Author

Medezinski, Elinor, primary, Battaglia, Nicholas, additional, Umetsu, Keiichi, additional, Oguri, Masamune, additional, Miyatake, Hironao, additional, Nishizawa, Atsushi J, additional, Sifón, Cristóbal, additional, Spergel, David N, additional, Chiu, I-Non, additional, Lin, Yen-Ting, additional, Bahcall, Neta, additional, and Komiyama, Yutaka, additional

Published
2017
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10. First data release of the Hyper Suprime-Cam Subaru Strategic Program

Author

Aihara, Hiroaki, primary, Armstrong, Robert, additional, Bickerton, Steven, additional, Bosch, James, additional, Coupon, Jean, additional, Furusawa, Hisanori, additional, Hayashi, Yusuke, additional, Ikeda, Hiroyuki, additional, Kamata, Yukiko, additional, Karoji, Hiroshi, additional, Kawanomoto, Satoshi, additional, Koike, Michitaro, additional, Komiyama, Yutaka, additional, Lang, Dustin, additional, Lupton, Robert H, additional, Mineo, Sogo, additional, Miyatake, Hironao, additional, Miyazaki, Satoshi, additional, Morokuma, Tomoki, additional, Obuchi, Yoshiyuki, additional, Oishi, Yukie, additional, Okura, Yuki, additional, Price, Paul A, additional, Takata, Tadafumi, additional, Tanaka, Manobu M, additional, Tanaka, Masayuki, additional, Tanaka, Yoko, additional, Uchida, Tomohisa, additional, Uraguchi, Fumihiro, additional, Utsumi, Yousuke, additional, Wang, Shiang-Yu, additional, Yamada, Yoshihiko, additional, Yamanoi, Hitomi, additional, Yasuda, Naoki, additional, Arimoto, Nobuo, additional, Chiba, Masashi, additional, Finet, Francois, additional, Fujimori, Hiroki, additional, Fujimoto, Seiji, additional, Furusawa, Junko, additional, Goto, Tomotsugu, additional, Goulding, Andy, additional, Gunn, James E, additional, Harikane, Yuichi, additional, Hattori, Takashi, additional, Hayashi, Masao, additional, Hełminiak, Krzysztof G, additional, Higuchi, Ryo, additional, Hikage, Chiaki, additional, Ho, Paul T P, additional, Hsieh, Bau-Ching, additional, Huang, Kuiyun, additional, Huang, Song, additional, Imanishi, Masatoshi, additional, Iwata, Ikuru, additional, Jaelani, Anton T, additional, Jian, Hung-Yu, additional, Kashikawa, Nobunari, additional, Katayama, Nobuhiko, additional, Kojima, Takashi, additional, Konno, Akira, additional, Koshida, Shintaro, additional, Kusakabe, Haruka, additional, Leauthaud, Alexie, additional, Lee, Chien-Hsiu, additional, Lin, Lihwai, additional, Lin, Yen-Ting, additional, Mandelbaum, Rachel, additional, Matsuoka, Yoshiki, additional, Medezinski, Elinor, additional, Miyama, Shoken, additional, Momose, Rieko, additional, More, Anupreeta, additional, More, Surhud, additional, Mukae, Shiro, additional, Murata, Ryoma, additional, Murayama, Hitoshi, additional, Nagao, Tohru, additional, Nakata, Fumiaki, additional, Niida, Mana, additional, Niikura, Hiroko, additional, Nishizawa, Atsushi J, additional, Oguri, Masamune, additional, Okabe, Nobuhiro, additional, Ono, Yoshiaki, additional, Onodera, Masato, additional, Onoue, Masafusa, additional, Ouchi, Masami, additional, Pyo, Tae-Soo, additional, Shibuya, Takatoshi, additional, Shimasaku, Kazuhiro, additional, Simet, Melanie, additional, Speagle, Joshua, additional, Spergel, David N, additional, Strauss, Michael A, additional, Sugahara, Yuma, additional, Sugiyama, Naoshi, additional, Suto, Yasushi, additional, Suzuki, Nao, additional, Tait, Philip J, additional, Takada, Masahiro, additional, Terai, Tsuyoshi, additional, Toba, Yoshiki, additional, Turner, Edwin L, additional, Uchiyama, Hisakazu, additional, Umetsu, Keiichi, additional, Urata, Yuji, additional, Usuda, Tomonori, additional, Yeh, Sherry, additional, and Yuma, Suraphong, additional

Published
2017
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11. The Hyper Suprime-Cam SSP Survey: Overview and survey design

Author

Aihara, Hiroaki, primary, Arimoto, Nobuo, additional, Armstrong, Robert, additional, Arnouts, Stéphane, additional, Bahcall, Neta A, additional, Bickerton, Steven, additional, Bosch, James, additional, Bundy, Kevin, additional, Capak, Peter L, additional, Chan, James H H, additional, Chiba, Masashi, additional, Coupon, Jean, additional, Egami, Eiichi, additional, Enoki, Motohiro, additional, Finet, Francois, additional, Fujimori, Hiroki, additional, Fujimoto, Seiji, additional, Furusawa, Hisanori, additional, Furusawa, Junko, additional, Goto, Tomotsugu, additional, Goulding, Andy, additional, Greco, Johnny P, additional, Greene, Jenny E, additional, Gunn, James E, additional, Hamana, Takashi, additional, Harikane, Yuichi, additional, Hashimoto, Yasuhiro, additional, Hattori, Takashi, additional, Hayashi, Masao, additional, Hayashi, Yusuke, additional, Hełminiak, Krzysztof G, additional, Higuchi, Ryo, additional, Hikage, Chiaki, additional, Ho, Paul T P, additional, Hsieh, Bau-Ching, additional, Huang, Kuiyun, additional, Huang, Song, additional, Ikeda, Hiroyuki, additional, Imanishi, Masatoshi, additional, Inoue, Akio K, additional, Iwasawa, Kazushi, additional, Iwata, Ikuru, additional, Jaelani, Anton T, additional, Jian, Hung-Yu, additional, Kamata, Yukiko, additional, Karoji, Hiroshi, additional, Kashikawa, Nobunari, additional, Katayama, Nobuhiko, additional, Kawanomoto, Satoshi, additional, Kayo, Issha, additional, Koda, Jin, additional, Koike, Michitaro, additional, Kojima, Takashi, additional, Komiyama, Yutaka, additional, Konno, Akira, additional, Koshida, Shintaro, additional, Koyama, Yusei, additional, Kusakabe, Haruka, additional, Leauthaud, Alexie, additional, Lee, Chien-Hsiu, additional, Lin, Lihwai, additional, Lin, Yen-Ting, additional, Lupton, Robert H, additional, Mandelbaum, Rachel, additional, Matsuoka, Yoshiki, additional, Medezinski, Elinor, additional, Mineo, Sogo, additional, Miyama, Shoken, additional, Miyatake, Hironao, additional, Miyazaki, Satoshi, additional, Momose, Rieko, additional, More, Anupreeta, additional, More, Surhud, additional, Moritani, Yuki, additional, Moriya, Takashi J, additional, Morokuma, Tomoki, additional, Mukae, Shiro, additional, Murata, Ryoma, additional, Murayama, Hitoshi, additional, Nagao, Tohru, additional, Nakata, Fumiaki, additional, Niida, Mana, additional, Niikura, Hiroko, additional, Nishizawa, Atsushi J, additional, Obuchi, Yoshiyuki, additional, Oguri, Masamune, additional, Oishi, Yukie, additional, Okabe, Nobuhiro, additional, Okamoto, Sakurako, additional, Okura, Yuki, additional, Ono, Yoshiaki, additional, Onodera, Masato, additional, Onoue, Masafusa, additional, Osato, Ken, additional, Ouchi, Masami, additional, Price, Paul A, additional, Pyo, Tae-Soo, additional, Sako, Masao, additional, Sawicki, Marcin, additional, Shibuya, Takatoshi, additional, Shimasaku, Kazuhiro, additional, Shimono, Atsushi, additional, Shirasaki, Masato, additional, Silverman, John D, additional, Simet, Melanie, additional, Speagle, Joshua, additional, Spergel, David N, additional, Strauss, Michael A, additional, Sugahara, Yuma, additional, Sugiyama, Naoshi, additional, Suto, Yasushi, additional, Suyu, Sherry H, additional, Suzuki, Nao, additional, Tait, Philip J, additional, Takada, Masahiro, additional, Takata, Tadafumi, additional, Tamura, Naoyuki, additional, Tanaka, Manobu M, additional, Tanaka, Masaomi, additional, Tanaka, Masayuki, additional, Tanaka, Yoko, additional, Terai, Tsuyoshi, additional, Terashima, Yuichi, additional, Toba, Yoshiki, additional, Tominaga, Nozomu, additional, Toshikawa, Jun, additional, Turner, Edwin L, additional, Uchida, Tomohisa, additional, Uchiyama, Hisakazu, additional, Umetsu, Keiichi, additional, Uraguchi, Fumihiro, additional, Urata, Yuji, additional, Usuda, Tomonori, additional, Utsumi, Yousuke, additional, Wang, Shiang-Yu, additional, Wang, Wei-Hao, additional, Wong, Kenneth C, additional, Yabe, Kiyoto, additional, Yamada, Yoshihiko, additional, Yamanoi, Hitomi, additional, Yasuda, Naoki, additional, Yeh, Sherry, additional, Yonehara, Atsunori, additional, and Yuma, Suraphong, additional

Published
2017
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13. An optically-selected cluster catalog at redshift 0.1 < z < 1.1 from the Hyper Suprime-Cam Subaru Strategic Program S16A data

Author

Oguri, Masamune, primary, Lin, Yen-Ting, additional, Lin, Sheng-Chieh, additional, Nishizawa, Atsushi J, additional, More, Anupreeta, additional, More, Surhud, additional, Hsieh, Bau-Ching, additional, Medezinski, Elinor, additional, Miyatake, Hironao, additional, Jian, Hung-Yu, additional, Lin, Lihwai, additional, Takada, Masahiro, additional, Okabe, Nobuhiro, additional, Speagle, Joshua S, additional, Coupon, Jean, additional, Leauthaud, Alexie, additional, Lupton, Robert H, additional, Miyazaki, Satoshi, additional, Price, Paul A, additional, Tanaka, Masayuki, additional, Chiu, I-Non, additional, Komiyama, Yutaka, additional, Okura, Yuki, additional, Tanaka, Manobu M, additional, and Usuda, Tomonori, additional

Published
2017
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14. Galaxy interactions trigger rapid black hole growth: An unprecedented view from the Hyper Suprime-Cam survey.

Author

GOULDING, Andy D., GREENE, Jenny E., BEZANSON, Rachel, GRECO, Johnny, JOHNSON, Sean, LEAUTHAUD, Alexie, Yoshiki MATSUOKA, MEDEZINSKI, Elinor, and PRICE-WHELAN, Adrian M.

Subjects
SUPERMASSIVE black holes, GALAXY formation, STAR formation, ASTRONOMICAL surveys, ASTRONOMICAL catalogs, ACTIVE galactic nuclei, STELLAR mass, MACHINE learning
Abstract

Collisions and interactions between gas-rich galaxies are thought to be pivotal stages in their formation and evolution, causing the rapid production of new stars, and possibly serving as a mechanism for fueling supermassive black holes (BH). Harnessing the exquisite spatial resolution (~0.5 arcsec) afforded by the first ~170 deg2 of the Hyper Suprime-Cam (HSC) Survey, we present our new constraints on the importance of galaxy-galaxy major mergers (1:4) in growing BHs throughout the last ~8 Gyrs. Utilizing mid-infrared observations in the WISE All-Sky survey, we robustly select active galactic nuclei (AGN) and mass-matched control galaxy samples, totaling ~140,000 spectroscopically confirmed systems at i<22 mag. We identify galaxy interaction signatures using a novel machine-learning random forest decision tree technique allowing us to select statistically significant samples of major-mergers, minor-mergers/irregular-systems, and non-interacting galaxies. We use these samples to show that galaxies undergoing mergers are a factor ~2-7 more likely to contain luminous obscured AGN than non-interacting galaxies, and this is independent of both stellar mass and redshift to z < 0.9. Furthermore, based on our comparison of AGN fractions in mass-matched samples, we determine that the most luminous AGN population (LAGN > 1045 erg/s) systematically reside in merging systems over non-interacting galaxies. Our findings show that galaxy-galaxy interactions do, on average, trigger luminous AGN activity substantially more often than in secularly evolving non-interacting galaxies, and we further suggest that the BH growth rate may be closely tied to the dynamical time of the merger system. [ABSTRACT FROM AUTHOR]

Published
2018
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15. A large sample of shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S16A Wide field mass maps

Author

Miyazaki, Satoshi, Oguri, Masamune, Hamana, Takashi, Shirasaki, Masato, Koike, Michitaro, Komiyama, Yutaka, Umetsu, Keiichi, Utsumi, Yousuke, Okabe, Nobuhiro, More, Surhud, Medezinski, Elinor, Lin, Yen-Ting, Miyatake, Hironao, Murayama, Hitoshi, Ota, Naomi, and Mitsuishi, Ikuyuki

Abstract

We present the result of searching for clusters of galaxies based on weak gravitational lensing analysis of the ∼160 deg2area surveyed by Hyper Suprime-Cam (HSC) as a Subaru Strategic Program. HSC is a new prime focus optical imager with a 1${^{\circ}_{.}}$5-diameter field of view on the 8.2 m Subaru telescope. The superb median seeing on the HSC i-band images of 0${^{\prime\prime}_{.}}$56 allows the reconstruction of high angular resolution mass maps via weak lensing, which is crucial for the weak lensing cluster search. We identify 65 mass map peaks with a signal-to-noise (S/N) ratio larger than 4.7, and carefully examine their properties by cross-matching the clusters with optical and X-ray cluster catalogs. We find that all the 39 peaks with S/N> 5.1 have counterparts in the optical cluster catalogs, and only 2 out of the 65 peaks are probably false positives. The upper limits of X-ray luminosities from the ROSAT All Sky Survey (RASS) imply the existence of an X-ray underluminous cluster population. We show that the X-rays from the shear-selected clusters can be statistically detected by stacking the RASS images. The inferred average X-ray luminosity is about half that of the X-ray-selected clusters of the same mass. The radial profile of the dark matter distribution derived from the stacking analysis is well modeled by the Navarro–Frenk–White profile with a small concentration parameter value of c500∼ 2.5, which suggests that the selection bias on the orientation or the internal structure for our shear-selected cluster sample is not strong.

Published
2018
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16. The bright-star masks for the HSC-SSP survey

Author

Coupon, Jean, Czakon, Nicole, Bosch, James, Komiyama, Yutaka, Medezinski, Elinor, Miyazaki, Satoshi, and Oguri, Masamune

Abstract

We present the procedure to build and validate the bright-star masks for the Hyper-Suprime-Cam Strategic Subaru Proposal (HSC-SSP) survey. To identify and mask the saturated stars in the full HSC-SSP footprint, we rely on the Gaia and Tycho-2 star catalogues. We first assemble a pure star catalogue down to GGaia< 18 after removing ∼1.5% of sources that appear extended in the Sloan Digital Sky Survey (SDSS). We perform visual inspection on the early data from the S16A internal release of HSC-SSP, finding that our star catalogue is 99.2% pure down to GGaia< 18. Second, we build the mask regions in an automated way using stacked detected source measurements around bright stars binned per GGaiamagnitude. Finally, we validate those masks by visual inspection and comparison with the literature of galaxy number counts and angular two-point correlation functions. This version (Arcturus) supersedes the previous version (Sirius) used in the S16A internal and DR1 public releases. We publicly release the full masks and tools to flag objects in the entire footprint of the planned HSC-SSP observations at 〈ftp://obsftp.unige.ch/pub/coupon/brightStarMasks/HSC-SSP/〉.

Published
2018
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17. First data release of the Hyper Suprime-Cam Subaru Strategic Program

Author

Aihara, Hiroaki, Armstrong, Robert, Bickerton, Steven, Bosch, James, Coupon, Jean, Furusawa, Hisanori, Hayashi, Yusuke, Ikeda, Hiroyuki, Kamata, Yukiko, Karoji, Hiroshi, Kawanomoto, Satoshi, Koike, Michitaro, Komiyama, Yutaka, Lang, Dustin, Lupton, Robert H, Mineo, Sogo, Miyatake, Hironao, Miyazaki, Satoshi, Morokuma, Tomoki, Obuchi, Yoshiyuki, Oishi, Yukie, Okura, Yuki, Price, Paul A, Takata, Tadafumi, Tanaka, Manobu M, Tanaka, Masayuki, Tanaka, Yoko, Uchida, Tomohisa, Uraguchi, Fumihiro, Utsumi, Yousuke, Wang, Shiang-Yu, Yamada, Yoshihiko, Yamanoi, Hitomi, Yasuda, Naoki, Arimoto, Nobuo, Chiba, Masashi, Finet, Francois, Fujimori, Hiroki, Fujimoto, Seiji, Furusawa, Junko, Goto, Tomotsugu, Goulding, Andy, Gunn, James E, Harikane, Yuichi, Hattori, Takashi, Hayashi, Masao, Hełminiak, Krzysztof G, Higuchi, Ryo, Hikage, Chiaki, Ho, Paul T P, Hsieh, Bau-Ching, Huang, Kuiyun, Huang, Song, Imanishi, Masatoshi, Iwata, Ikuru, Jaelani, Anton T, Jian, Hung-Yu, Kashikawa, Nobunari, Katayama, Nobuhiko, Kojima, Takashi, Konno, Akira, Koshida, Shintaro, Kusakabe, Haruka, Leauthaud, Alexie, Lee, Chien-Hsiu, Lin, Lihwai, Lin, Yen-Ting, Mandelbaum, Rachel, Matsuoka, Yoshiki, Medezinski, Elinor, Miyama, Shoken, Momose, Rieko, More, Anupreeta, More, Surhud, Mukae, Shiro, Murata, Ryoma, Murayama, Hitoshi, Nagao, Tohru, Nakata, Fumiaki, Niida, Mana, Niikura, Hiroko, Nishizawa, Atsushi J, Oguri, Masamune, Okabe, Nobuhiro, Ono, Yoshiaki, Onodera, Masato, Onoue, Masafusa, Ouchi, Masami, Pyo, Tae-Soo, Shibuya, Takatoshi, Shimasaku, Kazuhiro, Simet, Melanie, Speagle, Joshua, Spergel, David N, Strauss, Michael A, Sugahara, Yuma, Sugiyama, Naoshi, Suto, Yasushi, Suzuki, Nao, Tait, Philip J, Takada, Masahiro, Terai, Tsuyoshi, Toba, Yoshiki, Turner, Edwin L, Uchiyama, Hisakazu, Umetsu, Keiichi, Urata, Yuji, Usuda, Tomonori, Yeh, Sherry, and Yuma, Suraphong

Abstract

The Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) is a three-layered imaging survey aimed at addressing some of the most important outstanding questions in astronomy today, including the nature of dark matter and dark energy. The survey has been awarded 300 nights of observing time at the Subaru Telescope, and it started in 2014 March. This paper presents the first public data release of HSC-SSP. This release includes data taken in the first 1.7 yr of observations (61.5 nights), and each of the Wide, Deep, and UltraDeep layers covers about 108, 26, and 4 square degrees down to depths of i∼ 26.4, ∼26.5, and ∼27.0 mag, respectively (5 σ for point sources). All the layers are observed in five broad bands (grizy), and the Deep and UltraDeep layers are observed in narrow bands as well. We achieve an impressive image quality of 0${^{\prime\prime}_{.}}$6 in the iband in the Wide layer. We show that we achieve 1%–2% point spread function (PSF) photometry (root mean square) both internally and externally (against Pan-STARRS1), and ∼10 mas and 40 mas internal and external astrometric accuracy, respectively. Both the calibrated images and catalogs are made available to the community through dedicated user interfaces and database servers. In addition to the pipeline products, we also provide value-added products such as photometric redshifts and a collection of public spectroscopic redshifts. Detailed descriptions of all the data can be found online. The data release website is https://hsc-release.mtk.nao.ac.jp.

Published
2018
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18. Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field†

Author

Miyaoka, Keita, Okabe, Nobuhiro, Kitaguchi, Takao, Oguri, Masamune, Fukazawa, Yasushi, Mandelbaum, Rachel, Medezinski, Elinor, Babazaki, Yasunori, Nishizawa, Atsushi J, Hamana, Takashi, Lin, Yen-Ting, Akamatsu, Hiroki, Chiu, I-Non, Fujita, Yutaka, Ichinohe, Yuto, Komiyama, Yutaka, Sasaki, Toru, Takizawa, Motokazu, Ueda, Shutaro, Umetsu, Keiichi, Coupon, Jean, Hikage, Chiaki, Hoshino, Akio, Leauthaud, Alexie, Matsushita, Kyoko, Mitsuishi, Ikuyuki, Miyatake, Hironao, Miyazaki, Satoshi, More, Surhud, Nakazawa, Kazuhiro, Ota, Naomi, Sato, Kousuke, Spergel, David, Tamura, Takayuki, Tanaka, Masayuki, Tanaka, Manobu M, and Utsumi, Yousuke

Abstract

We present a joint X-ray, optical, and weak-lensing analysis for X-ray luminous galaxy clusters selected from the MCXC (Meta-Catalog of X-Ray Detected Clusters of Galaxies) cluster catalog in the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) survey field with S16A data. As a pilot study for a series of papers, we measure hydrostatic equilibrium (HE) masses using XMM-Newton data for four clusters in the current coverage area out of a sample of 22 MCXC clusters. We additionally analyze a non-MCXC cluster associated with one MCXC cluster. We show that HE masses for the MCXC clusters are correlated with cluster richness from the CAMIRA catalog, while that for the non-MCXC cluster deviates from the scaling relation. The mass normalization of the relationship between cluster richness and HE mass is compatible with one inferred by matching CAMIRA cluster abundance with a theoretical halo mass function. The mean gas mass fraction based on HE masses for the MCXC clusters is 〈fgas〉 = 0.125 ± 0.012 at spherical overdensity Δ = 500, which is ∼80%–90% of the cosmic mean baryon fraction, Ωb/Ωm, measured by cosmic microwave background experiments. We find that the mean baryon fraction estimated from X-ray and HSC-SSP optical data is comparable to Ωb/Ωm. A weak-lensing shear catalog of background galaxies, combined with photometric redshifts, is currently available only for three clusters in our sample. Hydrostatic equilibrium masses roughly agree with weak-lensing masses, albeit with large uncertainty. This study demonstrates that further multiwavelength study for a large sample of clusters using X-ray, HSC-SSP optical, and weak-lensing data will enable us to understand cluster physics and utilize cluster-based cosmology.

Published
2018
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19. The first-year shear catalog of the Subaru Hyper Suprime-Cam Subaru Strategic Program Survey

Author

Mandelbaum, Rachel, Miyatake, Hironao, Hamana, Takashi, Oguri, Masamune, Simet, Melanie, Armstrong, Robert, Bosch, James, Murata, Ryoma, Lanusse, François, Leauthaud, Alexie, Coupon, Jean, More, Surhud, Takada, Masahiro, Miyazaki, Satoshi, Speagle, Joshua S, Shirasaki, Masato, Sifón, Cristóbal, Huang, Song, Nishizawa, Atsushi J, Medezinski, Elinor, Okura, Yuki, Okabe, Nobuhiro, Czakon, Nicole, Takahashi, Ryuichi, Coulton, William R, Hikage, Chiaki, Komiyama, Yutaka, Lupton, Robert H, Strauss, Michael A, Tanaka, Masayuki, and Utsumi, Yousuke

Abstract

We present and characterize the catalog of galaxy shape measurements that will be used for cosmological weak lensing measurements in the Wide layer of the first year of the Hyper Suprime-Cam (HSC) survey. The catalog covers an area of 136.9 deg2split into six fields, with a mean i-band seeing of 0${^{\prime\prime}_{.}}$58 and 5σ point-source depth of i∼ 26. Given conservative galaxy selection criteria for first-year science, the depth and excellent image quality results in unweighted and weighted source number densities of 24.6 and 21.8 arcmin−2, respectively. We define the requirements for cosmological weak lensing science with this catalog, then focus on characterizing potential systematics in the catalog using a series of internal null tests for problems with point-spread function (PSF) modeling, shear estimation, and other aspects of the image processing. We find that the PSF models narrowly meet requirements for weak lensing science with this catalog, with fractional PSF model size residuals of approximately 0.003 (requirement: 0.004) and the PSF model shape correlation function ρ1< 3 × 10−7(requirement: 4 × 10−7) at 0${^{\circ}_{.}}$5 scales. A variety of galaxy shape-related null tests are statistically consistent with zero, but star–galaxy shape correlations reveal additive systematics on >1° scales that are sufficiently large as to require mitigation in cosmic shear measurements. Finally, we discuss the dominant systematics and the planned algorithmic changes to reduce them in future data reductions.

Published
2018
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20. An optically-selected cluster catalog at redshift 0.1 < z< 1.1 from the Hyper Suprime-Cam Subaru Strategic Program S16A data

Author

Oguri, Masamune, Lin, Yen-Ting, Lin, Sheng-Chieh, Nishizawa, Atsushi J, More, Anupreeta, More, Surhud, Hsieh, Bau-Ching, Medezinski, Elinor, Miyatake, Hironao, Jian, Hung-Yu, Lin, Lihwai, Takada, Masahiro, Okabe, Nobuhiro, Speagle, Joshua S, Coupon, Jean, Leauthaud, Alexie, Lupton, Robert H, Miyazaki, Satoshi, Price, Paul A, Tanaka, Masayuki, Chiu, I-Non, Komiyama, Yutaka, Okura, Yuki, Tanaka, Manobu M, and Usuda, Tomonori

Abstract

We present an optically-selected cluster catalog from the Hyper Suprime-Cam (HSC) Subaru Strategic Program. The HSC images are sufficiently deep to detect cluster member galaxies down to M*∼ 1010.2M⊙even at z∼ 1, allowing a reliable cluster detection at such high redshifts. We apply the CAMIRA algorithm to the HSC Wide S16A dataset covering ∼232 deg2to construct a catalog of 1921 clusters at redshift 0.1 < z< 1.1 and richness ${\skew7\hat{N}}_{\rm mem}>15$that roughly corresponds to M200m≳ 1014h−1M⊙. We confirm good cluster photometric redshift performance, with the bias and the scatter in Δz/(1 + z) being better than 0.005 and 0.01, respectively, over most of the redshift range. We compare our cluster catalog with large X-ray cluster catalogs from the XXL and XMM-LSS (the XMM Large Scale Structure) surveys and find good correlation between richness and X-ray properties.We also study the mis-centering effect from the distribution of offsets between optical and X-ray cluster centers. We confirm the high (>0.9) completeness and purity for high-mass clusters by analyzing mock galaxy catalogs.

Published
2018
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21. Planck Sunyaev–Zel’dovich cluster mass calibration using Hyper Suprime-Cam weak lensing

Author

Medezinski, Elinor, Battaglia, Nicholas, Umetsu, Keiichi, Oguri, Masamune, Miyatake, Hironao, Nishizawa, Atsushi J, Sifón, Cristóbal, Spergel, David N, Chiu, I-Non, Lin, Yen-Ting, Bahcall, Neta, and Komiyama, Yutaka

Abstract

Using ∼140 deg2Subaru Hyper Suprime-Cam (HSC) survey data, we stack the weak lensing (WL) signal around five Planck clusters found within the footprint. This yields a 15σ detection of the mean Planck cluster mass density profile. The five Planck clusters span a relatively wide mass range, MWL,500c= (2–30) × 1014M⊙ with a mean mass of MWL,500c= (4.15 ± 0.61) × 1014M⊙ . The ratio of the stacked Planck Sunyaev–Zel’dovich (SZ) mass to the stacked WL mass is 〈MSZ〉/〈MWL〉 = 1 − b= 0.80 ± 0.14. This mass bias is consistent with previous WL mass calibrations of Planck clusters within the errors. We discuss the implications of our findings for the calibration of SZ cluster counts and the much discussed tension between Planck SZ cluster counts and Planck ΛCDM cosmology.

Published
2018
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22. The Hyper Suprime-Cam SSP Survey: Overview and survey design

Author

Aihara, Hiroaki, Arimoto, Nobuo, Armstrong, Robert, Arnouts, Stéphane, Bahcall, Neta A, Bickerton, Steven, Bosch, James, Bundy, Kevin, Capak, Peter L, Chan, James H H, Chiba, Masashi, Coupon, Jean, Egami, Eiichi, Enoki, Motohiro, Finet, Francois, Fujimori, Hiroki, Fujimoto, Seiji, Furusawa, Hisanori, Furusawa, Junko, Goto, Tomotsugu, Goulding, Andy, Greco, Johnny P, Greene, Jenny E, Gunn, James E, Hamana, Takashi, Harikane, Yuichi, Hashimoto, Yasuhiro, Hattori, Takashi, Hayashi, Masao, Hayashi, Yusuke, Hełminiak, Krzysztof G, Higuchi, Ryo, Hikage, Chiaki, Ho, Paul T P, Hsieh, Bau-Ching, Huang, Kuiyun, Huang, Song, Ikeda, Hiroyuki, Imanishi, Masatoshi, Inoue, Akio K, Iwasawa, Kazushi, Iwata, Ikuru, Jaelani, Anton T, Jian, Hung-Yu, Kamata, Yukiko, Karoji, Hiroshi, Kashikawa, Nobunari, Katayama, Nobuhiko, Kawanomoto, Satoshi, Kayo, Issha, Koda, Jin, Koike, Michitaro, Kojima, Takashi, Komiyama, Yutaka, Konno, Akira, Koshida, Shintaro, Koyama, Yusei, Kusakabe, Haruka, Leauthaud, Alexie, Lee, Chien-Hsiu, Lin, Lihwai, Lin, Yen-Ting, Lupton, Robert H, Mandelbaum, Rachel, Matsuoka, Yoshiki, Medezinski, Elinor, Mineo, Sogo, Miyama, Shoken, Miyatake, Hironao, Miyazaki, Satoshi, Momose, Rieko, More, Anupreeta, More, Surhud, Moritani, Yuki, Moriya, Takashi J, Morokuma, Tomoki, Mukae, Shiro, Murata, Ryoma, Murayama, Hitoshi, Nagao, Tohru, Nakata, Fumiaki, Niida, Mana, Niikura, Hiroko, Nishizawa, Atsushi J, Obuchi, Yoshiyuki, Oguri, Masamune, Oishi, Yukie, Okabe, Nobuhiro, Okamoto, Sakurako, Okura, Yuki, Ono, Yoshiaki, Onodera, Masato, Onoue, Masafusa, Osato, Ken, Ouchi, Masami, Price, Paul A, Pyo, Tae-Soo, Sako, Masao, Sawicki, Marcin, Shibuya, Takatoshi, Shimasaku, Kazuhiro, Shimono, Atsushi, Shirasaki, Masato, Silverman, John D, Simet, Melanie, Speagle, Joshua, Spergel, David N, Strauss, Michael A, Sugahara, Yuma, Sugiyama, Naoshi, Suto, Yasushi, Suyu, Sherry H, Suzuki, Nao, Tait, Philip J, Takada, Masahiro, Takata, Tadafumi, Tamura, Naoyuki, Tanaka, Manobu M, Tanaka, Masaomi, Tanaka, Masayuki, Tanaka, Yoko, Terai, Tsuyoshi, Terashima, Yuichi, Toba, Yoshiki, Tominaga, Nozomu, Toshikawa, Jun, Turner, Edwin L, Uchida, Tomohisa, Uchiyama, Hisakazu, Umetsu, Keiichi, Uraguchi, Fumihiro, Urata, Yuji, Usuda, Tomonori, Utsumi, Yousuke, Wang, Shiang-Yu, Wang, Wei-Hao, Wong, Kenneth C, Yabe, Kiyoto, Yamada, Yoshihiko, Yamanoi, Hitomi, Yasuda, Naoki, Yeh, Sherry, Yonehara, Atsunori, and Yuma, Suraphong

Abstract

Hyper Suprime-Cam (HSC) is a wide-field imaging camera on the prime focus of the 8.2-m Subaru telescope on the summit of Mauna Kea in Hawaii. A team of scientists from Japan, Taiwan, and Princeton University is using HSC to carry out a 300-night multi-band imaging survey of the high-latitude sky. The survey includes three layers: the Wide layer will cover 1400 deg2in five broad bands (grizy), with a 5 σ point-source depth of r≈ 26. The Deep layer covers a total of 26 deg2in four fields, going roughly a magnitude fainter, while the UltraDeep layer goes almost a magnitude fainter still in two pointings of HSC (a total of 3.5 deg2). Here we describe the instrument, the science goals of the survey, and the survey strategy and data processing. This paper serves as an introduction to a special issue of the Publications of the Astronomical Society of Japan, which includes a large number of technical and scientific papers describing results from the early phases of this survey.

Published
2018
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