Takashi Ichikawa

Motives for elliptic modular groups (2009)

Ichikawa, Takashi

In order to study the arithmetic structure of elliptic modular groups which are the fundamental groups of compactified modular curves with cuspidal base points, these truncated Malcev Lie algebras...

Tohoku-Hiroshima-Nagoya planetary spectra library: A method for characterizing planets in the visible to near infrared (2009)

Lundock, Ramsey, Ichikawa, Takashi, Okita, Hirofumi, Kurita, Kentarou, Kawabata, Koji S., Uemura, Makoto, ...

There has not been a comprehensive framework for comparing spectral data from different planets.Such a framework is needed for the study of extrasolar planets and objects within the solar system. We...

The Seventh Data Release of the Sloan Digital Sky Survey (2009)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...

This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes...

Subaru/MOIRCS Near-Infrared Imaging in the Proto-Cluster Region at z=3.1 (2008)

Uchimoto, Yuka Katsuno, Suzuki, Ryuji, Tokoku, Chihiro, Ichikawa, Takashi, Konishi, Masahiro, Yoshikawa, Tomohiro, ...

We present the results of deep near-infrared imaging observations of the z=3.1 proto-cluster region in the SSA22a field taken by MOIRCS mounted on the Subaru Telescope. We observed a 21.7 arcmin^2...

Colors and Mass-to-Light Ratios of Bulges and Disks of Nearby Spiral Galaxies (2008)

Yoshino, Akira, Ichikawa, Takashi

We investigate colors and mass-to-light ratios ($M/L$s) of the bulges and disks for 28 nearby spiral galaxies with various morphological types of Sab to Scd, using images in optical and near-infrared...

NEAR-INFRARED WIDE-FIELD IMAGING CAMERA WITH PtSi (2007)

Theta Csd, Nobunari Itoh, Kenshi Yanagisawa, Takashi Ichikawa

We have constructed a near-infrared imaging camera which is attached to the prime focus of 105cm Schmidt telescope at Kiso Observatory. The camera is equipped with a 1040\Theta1040 PtSi CSD array...

A Catalogue of Morphologically Classified Galaxies from the Sloan Digital Sky Survey: North Equatorial Region (2007)

Fukugita, Masataka, Nakamura, Osamu, Okamura, Sadanori, Yasuda, Naoki, Barentine, John C., Brinkmann, Jon, ...

We present a catalogue of morphologically classified bright galaxies in the north equatorial stripe (230 deg$^2$) derived from the Third Data Release of the Sloan Digital Sky Survey (SDSS)....

MOIRCS Deep Survey. II. Clustering Properties of K-band Selected Galaxies in GOODS-North Region (2007)

Ichikawa, Takashi, Suzuki, Ryuji, Tokoku, Chihiro, Katsuno-Uchimoto, Yuka, Konishi, Masahiro, Yoshikawa, Tomohiro, ...

We present the first measurement of clustering properties of low mass galaxies with a stellar mass down to M_*~10^9 Msun at 1

The Fifth Data Release of the Sloan Digital Sky Survey (2007)

Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...

This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...

The fifth data release of the Sloan Digital Sky Survey (2007)

Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...

This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...

The Fifth Data Release of the Sloan Digital Sky Survey (2007)

Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...

This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...

The Fifth Data Release of the Sloan Digital Sky Survey (2007)

Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...

This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...

The fifth data release of the Sloan Digital Sky Survey (2007)

Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...

This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...

MOIRCS Deep Survey. I: DRG Number Counts (2006)

Kajisawa, Masaru, Konishi, Masahiro, Suzuki, Ryuji, Tokoku, Chihiro, Uchimoto, Yuka Katsuno, Yoshikawa, Tomohiro, ...

We use very deep near-infrared imaging data taken with Multi-Object InfraRed Camera and Spectrograph (MOIRCS) on the Subaru Telescope to investigate the number counts of Distant Red Galaxies (DRGs)....

The Third Data Release of the Sloan Digital Sky Survey (2005)

Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg2,...

The third data release of the Sloan Digital Sky Survey (2005)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...

The third data release of the Sloan Digital Sky Survey (2005)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...

The third data release of the Sloan Digital Sky Survey (2005)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...

This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...

A family of Schottky groups arising from the hypergeometric equation (2004)

Ichikawa, Takashi, Yoshida, Masaaki

We study a complex 3-dimensional family of classical Schottky groups of genus 2 as monodromy groups of the hypergeometric equation. We find non-trivial loops in the deformation space; these...

A family of Schottky groups arising from the hypergeometric equation(tex/schot/IY2) (2004)

Ichikawa, Takashi, Yoshida, Masaaki, 市川, 尚志, 吉田 , 正章

We study a complex 3-dimentional family of classical Schottky groups of genus 2 as monodromy groups of the hypergeometric equation. We find non-trivial loops in the deformation space; these...

The second data release of the Sloan Digital Sky Survey (2004)

Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt, Anderson, Scott F., ...

The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg2 of five-band (ugriz) imaging data with photometry for...

The second data release of the Sloan Digital Sky Survey (2004)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...

The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg(2) of five-band (ugriz) imaging data with photometry for...

The second data release of the Sloan Digital Sky Survey (2004)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...

The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg(2) of five-band (ugriz) imaging data with photometry for...

The first data release of the Sloan Digital Sky Survey (2003)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...

The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...

The first data release of the Sloan Digital Sky Survey (2003)

Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...

The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...

Sloan Digital Sky Survey: Early data release (2002)

Stoughton, Chirs, Lupton, Rpbert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott, Castander, Francsico J., ...

The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of 10 6 galaxies, 100,000...

Sloan Digital Sky Survey: early data release (2002)

Stoughton, Chris, Lupton, Robert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott M., Castander, Francisco J., ...

The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of ≈ 106 galaxies,...

Sloan Digital Sky Survey: early data release (2002)

Stoughton, Chris, Lupton, Robert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott M., Castander, Francisco J., ...

The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of ≈ 106 galaxies,...

Generalized Tate curve and integral Teichmuller modular forms (2000)

Ichikawa, Takashi.

American Journal of Mathematics - Volume 122, Number 6, December 2000

Multi-Color Photometry of Nearby Galaxies (1996)

Kenshi Yanagisawa, Nobunari Itoh, Takashi Ichikawa

We have started multi-color imaging program of nearby galaxies since last year and present preliminary result here. We selected 12 nearby galaxies classfied from E to Sab type and observed in...

Efficacy of TAK-457, a Novel Intravenous Triazole, against Invasive Pulmonary Aspergillosis in Neutropenic Mice

Hayashi, Ryogo, Kitamoto, Naomi, Iizawa, Yuji, Ichikawa, Takashi, Itoh, Katsumi, Kitazaki, Tomoyuki, ...

TAK-457 is an injectable prodrug of TAK-456, which is a novel oral triazole compound with potent antifungal activity. The in vivo efficacy of TAK-457 was evaluated in two models of invasive pulmonary...

Efficacy of TAK-457, a Novel Intravenous Triazole, against Invasive Pulmonary Aspergillosis in Neutropenic Mice

Hayashi, Ryogo, Kitamoto, Naomi, Iizawa, Yuji, Ichikawa, Takashi, Itoh, Katsumi, Kitazaki, Tomoyuki, ...

TAK-457 is an injectable prodrug of TAK-456, which is a novel oral triazole compound with potent antifungal activity. The in vivo efficacy of TAK-457 was evaluated in two models of invasive pulmonary...