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The Infrared Astronomical Mission AKARI
H. Murakami, H. Baba, P. Barthel +90
AKARI, the first Japanese satellite dedicated to infrared astronomy, was launched on 2006 February 21, and started observations in May of the same year. AKARI has a 68.5 cm cooled…
Near-Infrared Extinction in The Coalsack Globule 2
Takahiro Naoi, Motohide Tamura, Tetsuya Nagata +8
We have conducted J, H, and Ks imaging observations for the Coalsack Globule 2 with the SIRIUS infrared camera on the IRSF 1.4 m telescope at SAAO, and determined the color excess…
The Distance to the Galactic Center Derived From Infrared Photometry of Bulge Red Clump Stars
Shogo Nishiyama, Tetsuya Nagata, Shuji Sato +7
On the basis of the near infrared observations of bulge red clump stars near the Galactic center, we have determined the galactocentric distance to be R_0 = 7.52 +- 0.10 (stat) +-…
The period-luminosity relation for type II Cepheids in globular clusters
Noriyuki Matsunaga, Hinako Fukushi, Yoshikazu Nakada +11
We report the result of our near-infrared observations (JHKs) for type II Cepheids (including possible RV Tau stars) in galactic globular clusters. We detected variations of 46 var…
Interstellar Extinction Law in the J, H, and Ks Bands toward the Galactic Center
Shogo Nishiyama, Tetsuya Nagata, Nobuhiko Kusakabe +8
We have determined the ratios of total to selective extinction in the near-infrared bands (J, H, Ks) toward the Galactic center from the observations of the region |l| < 2.0deg and…
Near Infrared Imaging Survey of Bok Globules: Density Structure
Ryo Kandori, Yasushi Nakajima, Motohide Tamura +11
On the basis of near-infrared imaging observations, we derived visual extinction (Av) distribution toward ten Bok globules through measurements of both the color excess (E_{H-K}) a…