1. Effelsberg-Bonn HI Survey (EBHIS) Jürgen Kerp 1,Benjamin Winkel 2, Nadya Ben Bekhti 1, Shahram Faridani 1, Lars Flöer 1, Peter Kalberla 1, Daniel Lenz 1,Tobias Röhser 1 1 Argelander-Institut für Astronomie 2 Max-Planck-Institut für Radioastronomie jkerp@astro.uni-bonn.de

2. To make an all-sky survey of Galactic 21- cm emission with a 100m-class telescope has been a dream for many decades, now the dream is finally coming true. jkerp@astro.uni-bonn.de anonymous referee

3. 7-beam receiver system On-the fly observing mode Fully sampled sky coverage above Dec = -5 ⁰ EBHIS observations started in August 2008 First full sky coverage finished in April 2013! jkerp@astro.uni-bonn.de

4. EBHIS concept Galactic and extragalactic HI survey in parallel : 21.400 square degrees 100 MHz bandwidth z ≤ 0.07 (270 Mpc) 14 spectrometer with 16384 spectral channels each High angular resolution → fully sampled grid 1/44 LAB Complementary to the Parkes multi-feed survey projects (HIPASS,GASS) jkerp@astro.uni-bonn.de

5. EBHIS concept HVC 289+33+251 Brüns & Westmeier 2004, A&A 426, L9 Beam filling is different ! LAB 100-m

6. EBHIS concept jkerp@astro.uni-bonn.de

7. Image: B. Winkel

8. EBHIS: extragalactic science prospects jkerp@astro.uni-bonn.de

9. EBHIS “The HI Nearby Galaxy Survey” jkerp@astro.uni-bonn.de Walter et al. 2008, AJ 136, 2563

10. EBHIS: THINGS ensemble jkerp@astro.uni-bonn.de Kerp et al. 2013, in prep.

11. EBHIS: THINGS ensemble jkerp@astro.uni-bonn.de Kerp et al. 2013, in prep.

12. EBHIS: THINGS ensemble jkerp@astro.uni-bonn.de Kerp et al. 2013, in prep.

13. EBHIS vs. THINGS: flux comparison I jkerp@astro.uni-bonn.de

14. THINGS: NGC 3031 (M81) jkerp@astro.uni-bonn.de Walter et al. 2008, AJ 136, 2563

15. ETHINGS: NGC 3031 (M81) jkerp@astro.uni-bonn.de Kerp et al. 2013, in prep. ON-OFF

16. ETHINGS: NGC 3031 (M81) jkerp@astro.uni-bonn.de Background: EBHIS Inset: THINGS

17. ETHINGS: NGC 3031 (M81) jkerp@astro.uni-bonn.de Background: EBHIS Inset: THINGS Poster: Shahram Faridani

18. EBHIS vs. HyperLeda: flux comparison II jkerp@astro.uni-bonn.de

19. EBHIS: Milky Way science prospects jkerp@astro.uni-bonn.de

20. The northern polar cap (LAB) jkerp@astro.uni-bonn.de b=30 ⁰ l=270 ⁰ l=90 ⁰

21. The northern polar cap (EBHIS) jkerp@astro.uni-bonn.de b=30 ⁰ l=270 ⁰ l=90 ⁰

22. The northern polar cap (EBHIS) jkerp@astro.uni-bonn.de IVC135+53 Draco IVC 88+56 IVC Spur & Arc

23. The northern polar cap (EBHIS) jkerp@astro.uni-bonn.de IVC135+53 Draco IVC 88+56 IVC Spur & Arch

24. EBHIS-Planck correlation jkerp@astro.uni-bonn.de 24

25. EBHIS-Planck correlation (H 2 formation) jkerp@astro.uni-bonn.de Ph. D. Tobias Röhser 25

26. EBHIS-Planck correlation (H 2 formation) jkerp@astro.uni-bonn.de Ph. D. Tobias Röhser 26

27. EBHIS-Planck correlation (H 2 formation) jkerp@astro.uni-bonn.de Ph. D. Tobias Röhser 27 Poster: Tobias Röhser

28. The northern polar cap (EBHIS) jkerp@astro.uni-bonn.de IVC135+53 Draco IVC 88+56

29. IVC 135+53 (velocity bridge) jkerp@astro.uni-bonn.de Lenz et al., in prep.

30. IVC 135+53 (HVC deceleration) jkerp@astro.uni-bonn.de Lenz et al., in prep.

31. IVC 135+53 (dust-to-gas ratio) jkerp@astro.uni-bonn.de -0.43±0.12 dex (Feige 48) Hernandez et al. 2013, submitted Lenz et al., in prep.

32. IVC 135+53 (EBHIS-Planck → H 2 map) jkerp@astro.uni-bonn.de Lenz et al., in prep.

33. IVC 135+53 (EBHIS-Planck → H 2 map) jkerp@astro.uni-bonn.de Lenz et al., in prep.

34. H 2 rain? (HVC triggered IVC H 2 formation?) 1.Towards the northern polar cap we observe about 1 ∙ 10 6 M sun @ 500 pc altitude 2.Say 10% of the mass H 2 3.Northern polar cap 1sr 4.Yielding 1 ∙ 10 6 M Sun of H 2 full sky 5.Free fall time t ~ 10 6 1 M sun /year (low metallicity) Extent 5 pc distance about 500 pc → 35’ @ 500 pc → 21” @ 50 kpc (LMC/SMC) → 0.3” @ 3.5 Mpc (Ursa Major) “Dark Gas” Wolfire, Hollenbach & McKee 2010, ApJ 716, 1191 jkerp@astro.uni-bonn.de

35. EBHIS products jkerp@astro.uni-bonn.de 35 Ph. D. Lars Flöer

36. The future: second coverage > 30 ⁰ jkerp@astro.uni-bonn.de Image: B. Winkel

37. Thank you! KE757/7-1 to 7-3 jkerp@astro.uni-bonn.de