The massive star-forming regions omnibus X-ray catalog, second installment

Leisa K. Townsley, Patrick Sean Broos, Gordon P. Garmire, Gemma E. Anderson, Eric Feigelson, Tim Naylor, Matthew S. Povich

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We present the second installment of the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC2), a compilation of X-ray point sources detected in Chandra/ACIS observations of 16 Galactic MSFRs and surrounding fields. MOXC2 includes 13 ACIS mosaics, three containing a pair of unrelated MSFRs at different distances, with a total catalog of 18,396 point sources. The MSFRs sampled range over distances of 1.3 kpc to 6 kpc and populations varying from single massive protostars to the most massive Young Massive Cluster known in the Galaxy. By carefully detecting and removing X-ray point sources down to the faintest statistically significant limit, we facilitate the study of the remaining unresolved X-ray emission. Through comparison with mid-infrared images that trace photon-dominated regions and ionization fronts, we see that the unresolved X-ray emission is due primarily to hot plasmas threading these MSFRs, the result of feedback from the winds and supernovae of massive stars. The 16 MSFRs studied in MOXC2 more than double the MOXC1 sample, broadening the parameter space of ACIS MSFR explorations and expanding Chandra's substantial contribution to contemporary star formation science.

Original languageEnglish (US)
Article number43
JournalAstrophysical Journal, Supplement Series
Volume235
Issue number2
DOIs
StatePublished - Apr 1 2018

Fingerprint

massive stars
catalogs
x rays
point sources
point source
protostars
high temperature plasmas
supernovae
star formation
ionization
galaxies
plasma
photons

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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abstract = "We present the second installment of the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC2), a compilation of X-ray point sources detected in Chandra/ACIS observations of 16 Galactic MSFRs and surrounding fields. MOXC2 includes 13 ACIS mosaics, three containing a pair of unrelated MSFRs at different distances, with a total catalog of 18,396 point sources. The MSFRs sampled range over distances of 1.3 kpc to 6 kpc and populations varying from single massive protostars to the most massive Young Massive Cluster known in the Galaxy. By carefully detecting and removing X-ray point sources down to the faintest statistically significant limit, we facilitate the study of the remaining unresolved X-ray emission. Through comparison with mid-infrared images that trace photon-dominated regions and ionization fronts, we see that the unresolved X-ray emission is due primarily to hot plasmas threading these MSFRs, the result of feedback from the winds and supernovae of massive stars. The 16 MSFRs studied in MOXC2 more than double the MOXC1 sample, broadening the parameter space of ACIS MSFR explorations and expanding Chandra's substantial contribution to contemporary star formation science.",
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The massive star-forming regions omnibus X-ray catalog, second installment. / Townsley, Leisa K.; Broos, Patrick Sean; Garmire, Gordon P.; Anderson, Gemma E.; Feigelson, Eric; Naylor, Tim; Povich, Matthew S.

In: Astrophysical Journal, Supplement Series, Vol. 235, No. 2, 43, 01.04.2018.

Research output: Contribution to journalArticle

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