1 / 8

A First Look at Taurus with Harp

A First Look at Taurus with Harp. CO 3-2 mapping over 0.75 sqr degrees (T A *(rms) ~ 0.12 +/- 0.04 K in the unbinned data @ 0.05 km/s resolution) 13 CO and C 18 O maps over 0.11 sqr degrees. 1. 13 CO (and C 18 O) channel maps. Many resolved clumps - lots of subtle velocity structure…

missy
Download Presentation

A First Look at Taurus with Harp

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A First Look at Taurus with Harp CO 3-2 mapping over 0.75 sqr degrees (TA*(rms) ~ 0.12 +/- 0.04 K in the unbinned data @ 0.05 km/s resolution) 13CO and C18O maps over 0.11 sqr degrees 1

  2. 13CO (and C18O) channel maps Many resolved clumps - lots of subtle velocity structure… Nice comparison of Bowl (evolved) versus SE Ridge (young) 2

  3. We identify 21 outflows spread across L1495; • We measure M/P/KE for 15 of these (the CO flows) • Compare the distribution and properties of the outflows to those of the protostars and H13CO+ cores • HH jets driven by TTSs; CO flows by Class 0/I • Evolutionary gradient along the ridge; bowl most evolved… 3.Use outflows to help distinguish starless from protostellarcores: • # Starless ~ # Prestellar ~ # Protostellar H13CO+ cores • From number of outflows and cloud mass (low Av region): • 1 outflow/92 Msol in ridge; 1 flow/289 Msol in bowl • SFE ~ 10% in ridge, 3% in bowl - i.e. ~ canonical - all protostars drive molecular outflows - CO outflows pin-point protostars Results from the First-Look paper 3

  4. The SE ridge; a great laboratory for the study of pre-/proto-stellar evolution! 4

  5. Future work on Taurus… SCUBA-2 mapping; just where are all the “cores” Additional 13CO/C18O mapping - dust versus gas distribution A closer look at the Spitzer data; get a better handle on the YSO population Higher-resolution CO mapping of the outflows Deeper H2 (and optical?) imaging… 5

  6. MHO 717 MHO 716 MHO 718 HH 391/MHO 731 6

  7. MHO 720 MHO 719 7

  8. Thanks everyone…Ant Chrysostomou, Jenny Hatchell, Jane Buckle,Jan Wouterloot, Dave Nutter, Mike Fich, Chris Brunt, Harold Butner, Brad Cavanagh, Emily Curtis, Ana Duarte-Cabral, James Di Francesco, Mireya Etxaluze, Per Friberg, Rachel Friesen, Gary Fuller, Sarah Graves, Jane Greaves, Michiel Hogerheijde, Doug Johnstone, Brenda Matthews, Henry Matthews, Jonathan Rawlings, John Richer, Julia Roberts, Sarah Sadavoy, Robert Simpson, Nick Tothill, Yiannis Tsamis, Serena Viti, Derek Ward-Thompson, Glenn White, Jeremy Yates 8

More Related