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26 April 2024 |
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Article overview
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Discovery of a Hot Corino in the Bok Globule B335 | | Muneaki Imai
; Nami Sakai
; Yoko Oya
; Ana López-Sepulcre
; Yoshimasa Watanabe
; Cecilia Ceccarelli
; Bertrand Lefloch
; Emmanuel Caux
; Charlotte Vastel
; Claudine Kahane
; Takeshi Sakai
; Tomoya Hirota
; Yuri Aikawa
; Satoshi Yamamoto
; | | Date: |
13 Oct 2016 | | Abstract: | We report the first evidence of a hot corino in a Bok globule. This is based
on the ALMA observations in the 1.2 mm band toward the low-mass Class 0
protostar IRAS 19347+0727 in B335. Saturated complex organic molecules (COMs),
CH$_3$CHO, HCOOCH$_3$, and NH$_2$CHO, are detected in a compact region within a
few 10 au around the protostar. Additionally, CH$_3$OCH$_3$, C$_2$H$_5$OH,
C$_2$H$_5$CN, and CH$_3$COCH$_3$ are tentatively detected. Carbon-chain related
molecules, CCH and c-C$_3$H$_2$, are also found in this source, whose
distributions are extended over a few 100 au scale. On the other hand,
sulfur-bearing molecules CS, SO, and SO$_2$, have both compact and extended
components. Fractional abundances of the COMs relative to H$_2$ are found to be
comparable to those in known hot-corino sources. Though the COMs lines are as
broad as 5-8 km s$^{-1}$, they do not show obvious rotation motion in the
present observation. Thus, the COMs mainly exist in a structure whose
distribution is much smaller than the synthesized beam (0."58 x 0."52). | | Source: | arXiv, 1610.3942 | | Services: | Forum | Review | PDF | Favorites | |
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