HH 175: A Giant HH Flow Emanating From A Multiple Protostar
arXiv:2105.00651 · doi:10.1093/mnras/staa3965
Abstract
HH 175 is an isolated Herbig-Haro object seen towards the B35 cloud in the lambda Ori region. We use deep Subaru 8m interference filter images and Spitzer images to show that HH 175 is a terminal shock in a large collimated outflow from the nearby embedded source IRAS 05417+0907. The body of the eastern outflow lobe is hidden by a dense ridge of gas. The western outflow breaks out of the front of the cometary-shaped B35 cloud, carrying cloud fragments along, which are optically visible due to photoionization by the massive lambda Ori stars. The total extent of the bipolar outflow is 13.7 arcmin, which at the adopted distance of 415 pc corresponds to a projected dimension of 1.65 pc. The embedded source IRAS 05417+0907 is located on the flow axis approximately midway between the two lobes, and near-infrared images show it to be a multiple system of 6 sources, with a total luminosity of 31 Lsun. Millimeter maps in CO, 13CO, and C18O show that the B35 cloud is highly structured with multiple cores, of which the one that spawned IRAS 05417+0907 is located at the apex of B35. It is likely that the embedded source is the result of compression by an ionization-shock front driven by the lambda Ori OB stars.
arXiv comment10 pages, 14 figures
References in corpus (24)
- The Formation of Brown Dwarfs as Ejected Stellar Embryos
- SCUBA-2: The 10000 pixel bolometer camera on the James Clerk Maxwell Telescope
- How to Calculate Molecular Column Density
- SCUBA-2: iterative map-making with the Sub-Millimetre User Reduction Facility
- The Formation of Close Binary Systems by Dynamical Interactions and Orbital Decay
- A Large Catalog of Accurate Distances to Local Molecular Clouds: The Gaia DR2 Edition
- HARP/ACSIS: A submillimetre spectral imaging system on the James Clerk Maxwell Telescope
- A Compendium of Distances to Molecular Clouds in the Star Formation Handbook
- The Evolution of the Multiplicity of Embedded Protostars I: Sample Properties and Binary Detections
- Spectroscopy of Very Low Mass Stars and Brown Dwarfs in the Lambda Orionis Star Forming Region. I. Enlarging the census down to the planetary mass domain in Collinder 69
- A Photometric Study of the Young Stellar Population Throughout the lambda Orionis Star-Forming Region
- HST/ACS H-alpha Imaging of the Carina Nebula: Outflow Activity Traced by Irradiated Herbig-Haro Jets
- Infrared Nebulae Around Young Stellar Objects
- Orphaned Protostars
- Multiple CO Outflows in Circinus: The Churning of a Molecular Cloud
- Spitzer Observations of the Lambda Orionis cluster. II. Disks around solar-type and low mass stars
- Accretion and Magnetic Reconnection in the Classical T Tauri Binary DQ Tau
- A Detailed Study of Spitzer-IRAC Emission in Herbig-Haro Objects (I): Morphology and Flux Ratios of Shocked Emission
- A SCUBA survey of bright-rimmed clouds
- Multiplicity in Early Stellar Evolution
- XMM-Newton investigations of the Lambda Orionis star-forming region (XILO). I. The young cluster Collinder 69
- A deep look into the core of young clusters. II. lambda-Orionis
- XMM-Newton observations of the young open cluster around lambda Orionis
- The Ionization Structure of Sharpless 2-264: Multiwavelength Observations of the λ Ori H II Region