The Massive Star-Forming Regions Omnibus X-Ray Catalog

Leisa K. Townsley, Patrick S. Broos, Gordon P. Garmire, Jeroen Bouwman, Matthew S. Povich, Eric D. Feigelson, Konstantin V. Getman, Michael A. Kuhn

Research output: Contribution to journalArticlepeer-review


We present the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC), a compendium of X-ray point sources from Chandra/ACIS observations of a selection of MSFRs across the Galaxy, plus 30 Doradus in the Large Magellanic Cloud. MOXC consists of 20,623 X-ray point sources from 12 MSFRs with distances ranging from 1.7 kpc to 50 kpc. Additionally, we show the morphology of the unresolved X-ray emission that remains after the cataloged X-ray point sources are excised from the ACIS data, in the context of Spitzer and WISE observations that trace the bubbles, ionization fronts, and photon-dominated regions that characterize MSFRs. In previous work, we have found that this unresolved X-ray emission is dominated by hot plasma from massive star wind shocks. This diffuse X-ray emission is found in every MOXC MSFR, clearly demonstrating that massive star feedback (and the several-million-degree plasmas that it generates) is an integral component of MSFR physics.
Original languageEnglish
Article number1
JournalAstrophysical Journal, Supplement Series
Publication statusPublished - 1 Jul 2014


  • ISM: individual objects: NGC 6334 NGC 6357 M16 M17 W3 W4 NGC 3576 G333.6-0.2 W51A G29.96-0.02 NGC 3603 30 Doradus
  • open clusters and associations: individual: Pismis 24 AH03 J1725-34.4 NGC 6611 NGC 6618 W3 Main W3(OH) IC 1795 IC 1805 OCl 352 G49.5-0.4 R136 NGC 2060
  • stars: early-type
  • stars: formation
  • stars: individual: Pismis 24-1 Pismis 24-17 WR 93 [N78] 49 HD 168076 NGC 6611 213 CEN1a CEN1b Cl* NGC 6618 Sch 1 HD 15558 EM Car W51 IRS2E NGC 3603-A1 NGC 3603-B NGC 3603-C Cl* NGC 3603 Sher 47 WR 42e MTT 58 MTT 68 Mk34 R140a1a2
  • X-rays: stars
  • Astrophysics - Solar and Stellar Astrophysics


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