NO EVIDENCE for PROTOPLANETARY DISK DESTRUCTION by OB STARS in the MYStIX SAMPLE

Alexander J.W. Richert, Eric Feigelson, Konstantin V. Getman, Michael A. Kuhn

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Hubble Space Telescope images of proplyds in the Orion Nebula, as well as submillimeter/radio measurements, show that the dominant O7 star Ori C photoevaporates nearby disks around pre-main-sequence stars. Theory predicts that massive stars photoevaporate disks within distances of the order of 0.1 pc. These findings suggest that young, OB-dominated massive H ii regions are inhospitable to the survival of protoplanetary disks and, subsequently, to the formation and evolution of planets. In the current work, we test this hypothesis using large samples of pre-main-sequence stars in 20 massive star-forming regions selected with X-ray and infrared photometry in the MYStIX survey. Complete disk destruction would lead to a deficit of cluster members with an excess in JHKS and Spitzer/IRAC bands in the vicinity of O stars. In four MYStIX regions containing O stars and a sufficient surface density of disk-bearing sources to reliably test for spatial avoidance, we find no evidence for the depletion of inner disks around pre-main-sequence stars in the vicinity of O-type stars, even very luminous O2-O5 stars. These results suggest that massive star-forming regions are not very hostile to the survival of protoplanetary disks and, presumably, to the formation of planets.

Original languageEnglish (US)
Article number10
JournalAstrophysical Journal
Volume811
Issue number1
DOIs
StatePublished - Sep 20 2015

Fingerprint

protoplanetary disks
destruction
pre-main sequence stars
massive stars
O stars
planet
stars
planets
Orion nebula
infrared photometry
avoidance
Hubble Space Telescope
photometry
radio
depletion
x rays
test

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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abstract = "Hubble Space Telescope images of proplyds in the Orion Nebula, as well as submillimeter/radio measurements, show that the dominant O7 star Ori C photoevaporates nearby disks around pre-main-sequence stars. Theory predicts that massive stars photoevaporate disks within distances of the order of 0.1 pc. These findings suggest that young, OB-dominated massive H ii regions are inhospitable to the survival of protoplanetary disks and, subsequently, to the formation and evolution of planets. In the current work, we test this hypothesis using large samples of pre-main-sequence stars in 20 massive star-forming regions selected with X-ray and infrared photometry in the MYStIX survey. Complete disk destruction would lead to a deficit of cluster members with an excess in JHKS and Spitzer/IRAC bands in the vicinity of O stars. In four MYStIX regions containing O stars and a sufficient surface density of disk-bearing sources to reliably test for spatial avoidance, we find no evidence for the depletion of inner disks around pre-main-sequence stars in the vicinity of O-type stars, even very luminous O2-O5 stars. These results suggest that massive star-forming regions are not very hostile to the survival of protoplanetary disks and, presumably, to the formation of planets.",
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NO EVIDENCE for PROTOPLANETARY DISK DESTRUCTION by OB STARS in the MYStIX SAMPLE. / Richert, Alexander J.W.; Feigelson, Eric; Getman, Konstantin V.; Kuhn, Michael A.

In: Astrophysical Journal, Vol. 811, No. 1, 10, 20.09.2015.

Research output: Contribution to journalArticle

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