title: A glimpse of the Southern Jellyfish Nebula and its massive YSO
creator: Mercer, EP
creator: Wolff, MJ
creator: Bania, TM
creator: Benjamin, RA
creator: Cohen, M
creator: Dickey, JM
creator: Jackson, JM
creator: Kobulnicky, HA
creator: Mathis, JS
creator: Stolovy, SR
creator: Uzpen, B
creator: Clemens, DP
creator: Churchwell, EB
creator: Rathborne, JM
creator: Meade, MR
creator: Babler, BL
creator: Indebetouw, R
creator: Whitney, BA
creator: Watson, C
creator: Wolfire, MG
subject: 240101 Astronomy and Astrophysics
description: 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.
publisher: University of Chicago Press
date: 2007
type: Article
type: PeerReviewed
format: application/pdf
identifier: http://eprints.utas.edu.au/4098/1/4098.pdf
relation: http://dx.doi.org/10.1086/510302
identifier: 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
relation: http://eprints.utas.edu.au/4098/