creators_name: Mercer, EP
creators_name: Wolff, MJ
creators_name: Bania, TM
creators_name: Benjamin, RA
creators_name: Cohen, M
creators_name: Dickey, JM
creators_name: Jackson, JM
creators_name: Kobulnicky, HA
creators_name: Mathis, JS
creators_name: Stolovy, SR
creators_name: Uzpen, B
creators_name: Clemens, DP
creators_name: Churchwell, EB
creators_name: Rathborne, JM
creators_name: Meade, MR
creators_name: Babler, BL
creators_name: Indebetouw, R
creators_name: Whitney, BA
creators_name: Watson, C
creators_name: Wolfire, MG
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: John.Dickey@utas.edu.au
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: 
type: article
datestamp: 2008-04-07 14:22:21
lastmod: 2008-09-09 00:14:38
metadata_visibility: show
title: A glimpse of the Southern Jellyfish Nebula and its massive YSO
ispublished: pub
subjects: 240101
full_text_status: restricted
note: © 2007. The American Astronomical Society.
abstract: 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.
date: 2007
date_type: published
publication: The Astrophysical Journal
volume: 656
number: 1
publisher: University of Chicago Press
pagerange: 242-247
id_number: 10.1086/510302
refereed: TRUE
issn: 0004-637X
official_url: http://dx.doi.org/10.1086/510302
citation: Mercer, EP and Wolff, MJ and Bania, TM and Benjamin, RA and Cohen, M and Dickey, JM and Jackson, JM and Kobulnicky, HA and Mathis, JS and Stolovy, SR and Uzpen, B and Clemens, DP and Churchwell, EB and Rathborne, JM and Meade, MR and Babler, BL and Indebetouw, R and Whitney, BA and Watson, C and Wolfire, MG (2007) A glimpse of the Southern Jellyfish Nebula and its massive YSO. The Astrophysical Journal, 656 (1). pp. 242-247. ISSN 0004-637X
document_url: http://eprints.utas.edu.au/4098/1/4098.pdf