Studies of Ir II galaxies. I. NGC 4753 and NGC 5273

Journal Article · Thu Nov 01 04:00:00 EST 1973 · Astron. Astrophys., v. 29, no. 1, pp. 77-84

OSTI ID:4383106

Chromey, F R

Photometric observations of NGC 5273 and spectroscopic and photometric observations of NGC 4753 demonstrate that the visible light from these dusty galaxies originates primarily from latetype stars. Eleven-color photometry shows NGC 5273 to have a stellar population typical of a normal elliptical galaxy of low luminosity (M/sub V/ approximates -17.71. The spectral abnormalities mentioned by Markarian are not apparent in the photometry. Spectroscopy and photometry of NGC 4753 do not provide an unambiguous interpretation of this peculiar gnlaxy. Interior to a radius of 40 arc seconds, the object is rotating as a solid body, and the masses determined for this region lie in the range 0.9 to 4.4 x 10/sup 10/ M/sub sub solar /. Although one reasonable interpretation of the observational evidence implies that NGC 4753 has a population and luminosity identicai to those of a normal elliptical with Mv = -19.7, other interpretations cannot be entirely ruled out. (auth)

• Research Organization: Harvard Univ., Cambridge, MA
• NSA Number: NSA-29-016667
• OSTI ID: 4383106
• Journal Information: Astron. Astrophys., v. 29, no. 1, pp. 77-84, Journal Name: Astron. Astrophys., v. 29, no. 1, pp. 77-84; ISSN AAEJA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*GALAXIES-- PHOTOMETRY
MASS
N56500* --Physics (Astrophysics & Cosmology)--Galaxies
ROTATION
SHAPE