1 / 6

Linda J. Smith University College London

MODEST-6 Workshop 29-31 August 2005. with Mark Westmoquette (UCL) Jay Gallagher (Wisconsin-Madison) Bob O’Connell (Virginia) Richard de Grijs (Sheffield). HST/STIS SPECTROSCOPY OF A YOUNG SSC IN THE STARBURST CORE OF M82. Linda J. Smith University College London. WFPC2 BVI+H . A.

fauna
Download Presentation

Linda J. Smith University College London

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. MODEST-6 Workshop 29-31 August 2005 withMark Westmoquette (UCL)Jay Gallagher (Wisconsin-Madison)Bob O’Connell (Virginia)Richard de Grijs (Sheffield) HST/STIS SPECTROSCOPY OF A YOUNG SSC IN THE STARBURST CORE OF M82 Linda J. SmithUniversity College London

  2. WFPC2 BVI+H A STScI-PRC2001-08b R. de Grijs REGION A: 86 clusters!! In projection: Density of 1450 /kpc2 Mean separation = 11 +/- 5 pc Mean radius = 5 +/- 2 pc (Melo et al. 2005) STIS slit = 52”

  3. WFPC2 V-band image STIS slit position 52” x 0.1” M82-A1 0”.1 = 1.8 pc 180 pc

  4. STIS G430L + G750M spectra of M82-A1 • Age = 6.4 +/- 0.4 Myr • E(B-V) = 1.35 +/- 0.15 mag • V = 17.23 +/- 0.1 mag • MV = -14.8 +/- 0.4 mag • Mass = 7-13 x 105 Msun • Half-light radius = 3.0 +/- 0.5 pc • Mass density = 6-11 x 103 Msun pc-3

  5. [NII]+H [SII] Distance along slit -> Small HII region around M82-A1 • Half-light radius = 4.5 +/- 0.5 pc • Electron density = 1800 cm-3 • Pressure P/k = 2 x 107 cm-3 K

More Related