THE CHANDRA ACIS SURVEY OF M33 (ChASeM33): THE FINAL SOURCE CATALOG

Tuellmann R, Gaetz TJ, Plucinsky PP, Kuntz KD, Williams BF, Pietsch W, Haberl F, Long KS, Blair WP, Sasaki M, Winkler PF, Challis P, Pannuti TG, Edgar RJ, Helfand DJ, Hughes JP, Kirshner RP, Mazeh T, Shporer A (2011)

Publication Status: Published

Publication Type: Journal article

Publication year: 2011

Journal

Astrophysical Journal Supplement Series American Astronomical Society

Publisher: IOP PUBLISHING LTD

Book Volume: 193

Journal Issue: 2

DOI: 10.1088/0067-0049/193/2/31

Abstract

This study presents the final source catalog of the Chandra ACIS Survey of M33 (ChASeM33). With a total exposure time of 1.4 Ms, ChASeM33 covers similar to 70% of the D-25 isophote (R approximate to 4.0 kpc) of M33 and provides the deepest, most complete, and detailed look at a spiral galaxy in X-rays. The source catalog includes 662 sources, reaches a limiting unabsorbed luminosity of similar to 2.4x10(34) erg s(-1) in the 0.35-8.0 keV energy band, and contains source positions, source net counts, fluxes and significances in several energy bands, and information on source variability. The analysis challenges posed by ChASeM33 and the techniques adopted to address these challenges are discussed. To constrain the nature of the detected X-ray source, hardness ratios were constructed and spectra were fit for 254 sources, follow-up MMT spectra of 116 sources were acquired, and cross-correlations with previous X-ray catalogs and other multi-wavelength data were generated. Based on this effort, 183 of the 662 ChASeM33 sources could be identified. Finally, the luminosity function (LF) for the detected point sources as well as the one for the X-ray binaries (XRBs) in M33 is presented. The LFs in the soft band (0.5-2.0 keV) and the hard band (2.0-8.0 keV) have a limiting luminosity at the 90% completeness limit of 4.0 x 10(34) erg s(-1) and 1.6 x 10(35) erg s(-1)(for D = 817 kpc), respectively, which is significantly lower than what was reported by previous XRB population studies in galaxies more distant than M33. The resulting distribution is consistent with a dominant population of high-mass XRBs as would be expected for M33.

Authors with CRIS profile

Manami Sasaki

Involved external institutions

Tel Aviv University

Israel (IL) Harvard University

United States (USA) (US) Las Cumbres Observatory Global Telescope Network (LCOGT)

United States (USA) (US) University of Washington

United States (USA) (US) Columbia University

United States (USA) (US) Johns Hopkins University (JHU)

United States (USA) (US) The State University of New Jersey (Rutgers)

United States (USA) (US) Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics

Germany (DE) Morehead State University

United States (USA) (US) Space Telescope Science Institute (STScI)

United States (USA) (US) Middlebury College

United States (USA) (US) Eberhard Karls Universität Tübingen

Germany (DE)

How to cite

APA:

Tuellmann, R., Gaetz, T.J., Plucinsky, P.P., Kuntz, K.D., Williams, B.F., Pietsch, W.,... Shporer, A. (2011). THE CHANDRA ACIS SURVEY OF M33 (ChASeM33): THE FINAL SOURCE CATALOG. Astrophysical Journal Supplement Series, 193(2). https://doi.org/10.1088/0067-0049/193/2/31

MLA:

Tuellmann, R., et al. "THE CHANDRA ACIS SURVEY OF M33 (ChASeM33): THE FINAL SOURCE CATALOG." Astrophysical Journal Supplement Series 193.2 (2011).

BibTeX: Download