Pitch angles of distant spiral galaxies

被引：10

作者：

Savchenko, S. S. ^{[1
]}

Reshetnikov, V. P. ^{[1
]}

机构：

[1] St Petersburg State Univ, Petrodvorets 198504, Russia

来源：

ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 2011年 / 37卷 / 12期

关键词：

galaxies; morphology; kinematics; DEEP FIELD SOUTH; PHOTOMETRIC REDSHIFTS; ORIENTATION ANGLES; MILKY-WAY; ARMS; MORPHOLOGY; EVOLUTION; MONOTONY;

D O I：

10.1134/S1063773711120097

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have studied the pitch angles of spiral arms for 31 distant galaxies at z similar to 0.7 from three Hubble Deep Fields (HDF-N, HDF-S, HUDF). Using the pitch angle-rotation velocity relation calibrated from nearby galaxies, we have estimated the rotation velocities of galaxies from the deep fields. These estimates have a low accuracy (similar to 50 km s(-1)), but they allow low-mass and giant galaxies to be distinguished. The Tully-Fisher relation constructed using our velocity estimates shows satisfactory agreement with the actually observed relations for distant galaxies and provides evidence for the luminosity evolution of spiral galaxies.

引用

页码：817 / 825

页数：9

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