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A Galaxy Merging Sequence Traced by X-rays

Published online by Cambridge University Press:  26 May 2016

Yu Gao ,
Q. Daniel Wang  and
Ted A. Markowsky
Yu Gao
Affiliation:
Dept. of Astronomy, Univ. of Massachusetts, Amherst, MA 01003, USA
Q. Daniel Wang
Affiliation:
Dept. of Astronomy, Univ. of Massachusetts, Amherst, MA 01003, USA
Ted A. Markowsky
Affiliation:
Dept. of Astronomy, Univ. of Massachusetts, Amherst, MA 01003, USA

Abstract

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We are studying a sample of nearly 20 nearby (cz≲13,000 km s−1) IR-luminous interacting/merging galaxies observed with the ACIS in the Chandra archive (e.g., Gao et al. 2003; Ptak et al. 2003). Most galaxies in the sample are luminous infrared galaxies (LIGs) and nearly half of them are ultraluminous infrared galaxies (ULIGs) with bolometric luminosities comparable to QSOs. Based on multiwavelength data and numerical simulations of gas-rich galaxy mergers, we have attempted to arrange them in a merger sequence perspective and compared their broadband X-ray emission here with the optical images (mostly DSS).

Type
Part 3. Ejection and Outflow
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 430 - 431
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Gao, Y., Wang, Q.D., Appleton, P.N., Lucas, R.A. 2003, ApJ, 596, L171.CrossRefGoogle Scholar
Ptak, A., Heckman, T., Levenson, N.A. et al. 2003, ApJ, 592, 782.Google Scholar