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Date and Time of the Query: 2019-06-25 T21:02:56 PDT
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For refcode 2001ApJ...555..215W:
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Copyright by American Astronomical Society. Reproduced by permission
2001ApJ...555..215W Surface Photometric Calibration of the Infrared Tully-Fisher Relation Using Cepheid-based Distances of Galaxies Masaru Watanabe Japan Science and Technology Corporation, Tokyo 102-0081, Japan; watanabe@aquarius.plain.isas.ac.jp Naoki Yasuda National Astronomical Observatory of Japan, Tokyo 181-8588, Japan; naoki.yasuda@nao.ac.jp Nobunari Itoh Kiso Observatory, University of Tokyo, Nagano 397-0101, Japan; itoh.nobunari@nasda.go.jp Takashi Ichikawa Tohoku University, Miyagi 980-8578, Japan; ichikawa@astr.tohoku.ac.jp and Kenshi Yanagisawa Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, Okayama 719-0232, Japan; yanagi@oao.nao.ac.jp Received 2000 September 25; accepted 2001 February 16 ABSTRACT Infrared J and H surface photometry are carried out for nearby 12 galaxies whose distances have been accurately measured via Hubble Space Telescope Cepheid observations. Using the total, isophotal, and surface photometric aperture magnitudes, we calibrate the infrared luminosity-line- width relation (IRTF). It is found that IRTF changes its slope at log W_20_^c^ ~ 2.45 in all the examined magnitude systems. The apparent scatter of IRTF is not significantly reduced when surface photometric magnitudes are used instead of the conventionally used synthetic aperture magnitude H_- 0.5_. It is also shown that the color (I-H)_T_ of the nearby calibrator galaxies is redder by ~0.2 mag than the Coma Cluster of galaxies, but such a trend is not clearly visible for Ursa Major mostly because of poor statistics. The color offset of the Coma Cluster is analogous to that previously found in I_T_ - H_-0.5_. From the present calibration of H-band IRTF, we obtain the distance to the Coma Cluster to be m - M = 34.94 1 0.13 mag, where no account is taken of the I-H color problem. Using the cosmic microwave background rest recession velocity of the Coma Cluster, we obtain H_0_ = 73 +/- 4 km s^-1^ Mpc^-1^. Subject headings: distance scale-galaxies: fundamental parameters -galaxies: photometry-galaxies: spiral-infrared: galaxies
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