Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
ZENODO
Conference object . 2019
License: CC BY
Data sources: Datacite
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
ZENODO
Other literature type . 2019
License: CC BY
Data sources: ZENODO
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
ZENODO
Conference object . 2019
License: CC BY
Data sources: Datacite
versions View all 2 versions
addClaim

Resolving the source of the massive protostellar accretion outburst in NGC6334I-MM1B

Authors: Hunter, Todd;

Resolving the source of the massive protostellar accretion outburst in NGC6334I-MM1B

Abstract

Though evidence for episodic accretion is now commonplace toward low mass protostars, the recent extraordinary outburst in the massive protostellar cluster NGC6334I (Hunter et al. 2017) marks only the second large episodic accretion event observed toward a deeply embedded massive protostar and casts new light on the tumultuous lives of these young objects. The unexpectedly large factor of increase in millimeter continuum emission was accompanied by an unprecedented simultaneous flaring of 10 maser transitions detected by the long-term bi-weekly maser monitoring program at the Hartebeesthoek Radio Astronomy Observatory (HartRAO) (MacLeod et al. 2018). The dust emission and water and methanol masers have now remained in the outburst state for over four years. The combination of VLA and ALMA imaging (Brogan et al. 2018) pinpointed the origin of the outburst to a hypercompact HII region MM1B that is driving a compact well-collimated outflow traced by water masers, their proper motions, and a number of thermal molecular tracers of warm dense gas. The pre-outburst strength of the HCHII region and its bolometric luminosity are consistent with a deeply-embedded central protostar of early B- type, but it has dimmed dramatically in its free-free emission at centimeter wavelengths despite the large increase in luminosity. This combination of observations suggest a reduction in uv photons due to the rapid accretion of sufficient mass to cause the protostellar photosphere to expand and radiate at a much larger luminosity, but with a lower effective temperature. To explore this exciting possibility, we will present new ALMA images with the finest-ever resolution toward this object (<50 au) acquired during Cycle 6, along with the results from two new epochs of VLA monitoring of the continuum and maser emission.

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    2
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
    OpenAIRE UsageCounts
    Usage byUsageCounts
    visibility views 3
    download downloads 7
  • 3
    views
    7
    downloads
    Powered byOpenAIRE UsageCounts
Powered by OpenAIRE graph
Found an issue? Give us feedback
visibility
download
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
downloads
OpenAIRE UsageCountsDownloads provided by UsageCounts
2
Average
Average
Average
3
7
Green