SDSS-V Local Volume Mapper (LVM): Revealing the Structure of the Rosette Nebula
arXiv:2509.10665 · doi:10.1093/mnras/staf1530
Abstract
The Rosette Nebula is a well-known H II region shaped by the interaction of gas with the OB stars of the NGC 2244 stellar association. Located within the remnant of a giant molecular cloud, it exhibits a complex structure of ionized gas, molecular material, dust, and embedded clusters. In October 2023, the region was observed as part of the SDSS-V Local Volume Mapper (LVM) integral field spectroscopy survey. Covering a radius of approximately 1 degree, the dataset comprises 33,326 spectra with spatially resolved information spanning 390 - 980 nm. We present a structural analysis of the ionized, molecular, and dusty components using multi-wavelength observations: optical spectroscopy from SDSS-V LVM, 12CO emission from PMO/MWISP (sub-millimeter), and dust emission from WISE (12 micron) and Herschel (far-infrared). These datasets were complemented with the positions of ionizing stars to study emission structures traced by H alpha, H beta, [O III], [N II], and [S II], as well as the spatial distribution of line ratios (H alpha/H beta, [O III]/H beta, [N II]/H alpha, and [S II]/H alpha) relative to the surrounding molecular cloud. Our analysis reveals interaction zones between ionized and neutral gas, including filaments, globules, and dense regions with or without ongoing star formation. Radial and quadrant-based flux profiles further highlight morphological and ionization variations, supporting the scenario in which the Rosette Nebula evolved from a non-homogeneous molecular cloud with a thin, sheet-like structure.
Accepted for publication in MNRAS
References in corpus (14)
- Understanding Galaxy Evolution through Emission Lines
- Herschel-Planck dust optical-depth and column-density maps: I. Method description and results for Orion
- A Chandra Study of the Rosette Star-Forming Complex. I. The Stellar Population and Structure of the Young Open Cluster NGC 2244
- A FLAMINGOS Deep Near Infrared Imaging Survey of the Rosette Complex I: Identification and Distribution of the Embedded Population
- EDGE-CALIFA survey: Self-regulation of Star formation at kpc scales
- Revealing Gravitational Collapse in Serpens G3-G6 Molecular Cloud using Velocity Gradients
- A large-scale CO survey of the Rosette Molecular Cloud: assessing the effects of O stars on surrounding molecular gas
- Stellar associations powering HII regions $\unicode{x2013}$ I. Defining an evolutionary sequence
- SDSS-V Local Volume Mapper (LVM): A Glimpse into Orion
- Stellar population of the Rosette Nebula and NGC 2244: application of the probabilistic random forest
- A kinematic perspective on the formation process of the stellar groups in the Rosette Nebula
- Star Formation in the Rosette Complex
- Rosette Globulettes and Shells in the Infrared
- Rosette nebula globules: Seahorse giving birth to a star