%0 Journal Article
%@ 0004-637X
%A Mercer, EP
%A Wolff, MJ
%A Bania, TM
%A Benjamin, RA
%A Cohen, M
%A Dickey, JM
%A Jackson, JM
%A Kobulnicky, HA
%A Mathis, JS
%A Stolovy, SR
%A Uzpen, B
%A Clemens, DP
%A Churchwell, EB
%A Rathborne, JM
%A Meade, MR
%A Babler, BL
%A Indebetouw, R
%A Whitney, BA
%A Watson, C
%A Wolfire, MG
%D 2007
%F epprod:4098
%I University of Chicago Press
%J The Astrophysical Journal
%N 1
%P 242-247
%T A glimpse of the Southern Jellyfish Nebula and its massive YSO
%U http://eprints.utas.edu.au/4098/
%V 656
%X In Spitzer/IRAC images obtained under the GLIMPSE Legacy Survey, we have identified a unique and provocative
nebular object we call the ‘‘Southern Jellyfish Nebula.’’ The Southern Jellyfish Nebula is characterized by
a fan of narrow tendrils with extreme length-to-width ratios that emanate from the vicinity of a bright infrared point
source embedded in a smaller resolved nebula. From CO observations of the Nebula’s morphologically associated
molecular cloud, we have derived a kinematic distance of 5:7  0:8 kpc and a cloud mass of 3:2  0:9 ; 103 M. The
tendril-like ropes of the Nebula have widths of 0.1 pc and lengths of up to 2 pc. We have integrated the infrared
spectral energy distribution (SED) of the point source to establish it as a massive young stellar object (MYSO), most
likely forming alone, but possibly masking fainter cluster members. The shape of the SED is consistent with the shape
of a late Class 0 SED model. Based on its far-IR luminosity of 3:3  0:9 ; 104 L, the Southern Jellyfish’sMYSO has
a zero-age main sequence (ZAMS) spectral type of B0. Given the curious nature of this nebula, we suspect its peculiar
IR-bright structure is directly related to its current state of star formation.
%Z © 2007. The American Astronomical Society.