A New Correlation between Galaxy Stellar Masses and Spiral Arm

• Published in: Journal of physics. Conference series Vol. 1234; no. 1; pp. 12015 - 12024
• Main Authors: Al-Baidhany, Ismaeel A., Salman Chiad, Sami, Jabbar, Wasmaa A., Fadhil Habubi, Nadir, Mubarak, Tahseen H., Abbas Khadayeir, Abdulhussain, Hassan, Ehssan S., Odda Dawod, Mohamed, Haneen Abass, Khalid
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.07.2019
• Subjects: Astronomical models; disk galaxies - Galaxies; Galaxies; Physics; Pitch (inclination); spiral arm pitch angle; Spiral galaxies; spiral galaxies - Galaxies; Stellar mass; stellar mass - Galaxies; subject headings; Tightness
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1234/1/012015

We present a new relation between pitch angle of spiral arm (a parameter of the tightness of spiral structure) and the galaxy stellar masses. Taken both with the result that stellar mass seems to determine pitch angle of spiral arm, one would anticipate a correlation to exist between pitch angle of spiral galaxy and the galaxy stellar masses in disk of spiral galaxies. In this study, we measured the stellar mass of galaxy by using the calibration of L3.6µm,gal., and using the constant mass-to-light ratio (M/L)3.6µm,gal., were derived from the stellar population models. We conclude that pitch angle of spiral arm is a instrument to calculate indirect measurements of the stellar mass of galaxy.