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Infrared photometry of the semistellar nucleus of M31

Persson, S. E. and Cohen, J. G. and Sellgren, K. and Mould, J. and Frogel, Jay A. (1980) Infrared photometry of the semistellar nucleus of M31. Astrophysical Journal, 240 . pp. 779-784. ISSN 0004-637X. doi:10.1086/158290.

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New broad-band infrared JHK data and narrow-band CO and H_2O indices for the semistellar nucleus of M31 are presented. The data were obtained specifically to test a prediction of a recent synthesis model by Faber and French in which the ratio of dwarf-to-giant light increases strongly in going from the bulge to the nucleus of M31. The new infrared data do not support such a model. Some alternative explanations for the behavior of the various indices are given, but the apparent conflict between the Faber-French interpretation of the strength of the Na i λ8190 feature and our data is not satisfactorily resolved.

Item Type:Article
Related URLs:
URLURL TypeDescription
Cohen, J. G.0000-0002-8039-4673
Mould, J.0000-0003-3820-1740
Additional Information:© American Astronomical Society • Provided by the NASA Astrophysics Data System. Received 1980 February 25; accepted 1980 March 25. Cerro Tololo Inter-American Observatory, which is supported by the National Science Foundation under contract no. AST 78-27879. This work was supported in part by NSF grant AST 77-20516 and NASA grant NGL 05-002-207.
Funding AgencyGrant Number
NSFAST 78-27879
NSFAST 77-20516
NASANGL 05-002-207
Subject Keywords:galaxies : individual — galaxies : nuclei — galaxies : stellar content
Record Number:CaltechAUTHORS:20190531-091630558
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95968
Deposited By: George Porter
Deposited On:31 May 2019 20:51
Last Modified:16 Nov 2021 17:17

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