2025

56. Alexey Potapov, Hendrik Linz, Jeroen Bouwman, W. R. M. Rocha, et al. Simple molecules and complex chemistry in a protoplanetary disk: A JWST investigation of the highly inclined disk d216-0939.  Accepted for publication in A&A. Link for ArXiv.

55. Jimenez-Serra, (...), W. R. M. Rocha, et al. Modelling methanol and hydride formation in the JWST Ice Age era.  Accepted for publication in A&A. Link for ArXiv.

54. W. R. M. Rocha, M. K. McClure, J. A. Sturm et al. Ice inventory towards the protostar Ced 110 IRS4 observed with the James Webb Space Telescope. Results from the ERS Ice Age program.  A&A, 693, A288, 2025. Link for ArXiv. Link for A&A.

2024

53. N. G. C. Brunken, (...), W. R. M. Rocha, (...). JOYS+ study of solid state 12C/13C isotope ratios in protostellar envelopes: Observations of CO and CO2 ice with JWST. A&A, 692, A163, 2024. Link for pdf.

52. J. B. Bergner, (...), W. R. M. Rocha, E. F. van Dishoeck. JWST ice band profiles reveal mixed ice compositions in the HH 48 NE disk. ApJ, 975, 166, 2024. Link for pdf.

51. A. E. Rubinstein, (...), W. R. M. Rocha, (...). IPA. Class 0 Protostars Viewed in CO Emission Using JWST. ApJ, 974, 112, 2024. Link for pdf.

50. Y. Chen, W. R. M. Rocha, E. F. van Dishoeck, (...). JOYS+: link between ice and gas of complex organic molecules. Comparing JWST and ALMA data of two low-mass protostars. A&A, 690, A205, 2024. Link for ArXiv. Link for pdf.

49. K. Slavicinska, (...), W. R. M. Rocha, (...). JWST detections of amorphous and crystalline HDO ice toward massive protostars. A&A, 688, A29, 2024.

48. J.A. Sturm, M.K. McClure, D. Harsono, W. R. M. Rocha, (...). A JWST/MIRI analysis of the ice distribution and PAH emission in the protoplanetary disk HH 48 NE. Accepted on A&A on 12/Jul/2024. Link for ArXiv.

47. J. A. Noble, H. J. Fraser, Z. L. Smith, (...), W. R. M. Rocha, (...). Detection of the elusive dangling OH ice features at ~2.7 μm in Chamaeleon I with JWST NIRCam. Nature Astronomy, 2024, https://doi.org/10.1038/s41550-024-02307-7.

46. Samuel A. Federman, S. Thomas Megeath, Adam E. Rubinstein, (...), W. R. M. Rocha, (...). Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5μm Spectral Mapping of Five Young Protostars. ApJ, 966, 41, 2024. Link for ApJ. 

45. M.L. Dubernet, G.B. Berriman , C. Boersma , C. Jäger, M. Rengel , W. R. M. Rocha , F. Salama and C.M. Zwölf. Laboratory Astrophysics Data Working Group IAU 2022 GA session. Proceedings IAU Symposium No. 371, 2024. Link.

44. W. R. M. Rocha, M. G. Rachid, B. Olsthoorn, E. F. van Dishoeck , M. K. McClure, K. Slavicinska and H. Linnartz. SPECFY - an important tool of the Leiden Ice Database for Astrochemistry in the era of the James Webb Space Telescope. Proceedings IAU Symposium No. 371, 2024. Link. 

43. Ł. Tychoniec, M. van Gelder, E. F. van Dishoeck, L. Francis, W. R. M. Rocha et al. JWST Observations of Young protoStars (JOYS): Linked accretion and ejection in a Class I protobinary system. Accepted for publication in A&A in February 2024. Link for Arxiv.

42. N. G. C. Brunken, W. R. M. Rocha, E. F. van Dishoeck et al. JWST observations of 13CO2 ice: Tracing the chemical environment and thermal history of ices in protostellar envelopes. Accepted for publication in A&A in February 2024. Link for Arxiv.

41. P. Nazari , W. R. M. Rocha, A. E. Rubinstein et al. Hunt for complex cyanides in protostellar ices with JWST. Tentative detection of CH3CN and C2H5CN. Accepted for publication in A&A in January 2024. Link for ArXiv.

40. L. Francis, M. L. van Gelder, E. F. van Dishoeck, (...), W. R. M. Rocha, et al. JOYS: MIRI/MRS spectroscopy of gas-phase molecules from the high-mass star-forming region IRAS 23385+6053. Accepted for publication in A&A in January 2024. Link for ArXiv.

39. M. Narang, P. Manoj, H. Tyagi, (...), W. R. M. Rocha, et al. Discovery of a collimated jet from the low luminosity protostar IRAS 16253−2429 in a quiescent accretion phase with the JWST. Accepted for publication in ApJL in January 2024. Link for ArXiv.

38. W. R. M. Rocha, E. F. van Dishoeck, M. E. Ressler et al. JWST Observations of Young protoStars (JOYS+): Detection of icy complex organic molecules and ions. I. CH4, SO2, HCOO− , OCN− , H2CO, HCOOH, CH3CH2OH, CH3CHO, CH3OCHO, CH3COOH. Accepted for publication in A&A in December 2023. Link for ArXiv. Watch the talk (starts at 1:26:00). 1st year JWST sicence.

37. M. L. van Gelder, M. E. Ressler, E. F. van Dishoeck, (...), W.R.M. Rocha. JOYS+: mid-infrared detection of gas-phase SO2 emission in a low-mass protostar. The case of NGC 1333 IRAS2A: hot core or accretion shock? Accepted for publication in A&A in November 2023. Link for ArXiv.

36. E.Dartois, J. Noble, P. Caselli, (...), W.R.M. Rocha. Spectroscopic sizing of interstellar icy grains with JWST. Nature Astronomy,  2024, https://doi.org/10.1038/s41550-023-02155-x.

2023

35. E. Kosmaczewski, L. Stawarz, C.C. Cheung, A. Bamba, A. Karska, W.R.M. Rocha. Multiwavelength Study of Dark Globule DC 314.8-5.1: Point Source Identification and Diffuse Emission Characterization. ApJ, 959, 37, 2023. Link for ArXiv. Link for ApJ.

34. C. Gieser, H. Beuther , E. F. van Dishoeck, (...), W. R. M. Rocha, (...). JOYS: Disentangling the warm and cold material in the high-mass IRAS 23385+6053 cluster. A&A, 679, A108 ,2023. Link for ArXiv. Link for A&A.

33. Sturm, J. A., McClure, M. K., Beck, T. L., (...), W. R. M. Rocha, (...). A JWST inventory of protoplanetary disk ices: The edge-on protoplanetary disk HH 48 NE, seen with the Ice Age ERS program. A&A, 679, A138, 2023. Link for ArXiv. Link for A&A.

32. G. Perotti, J. K. Jørgensen, W. R. M. Rocha, A. Plunkett, E. Artur de la Villarmois, L. E. Kristensen, M. Sewiło, P. Bjerkeli, H. J. Fraser, and S. B. Charnley. Linking ice and gas in the Coronet cluster in Corona Australis.  A&A, 678, A78, 2023. Link for ArXiv. Link for A&A.

31. W. R. M. Rocha, M. G. Rachid, M. K. McClure , J. He and H. Linnartz. Water ice: temperature-dependent refractive indexes and their astrophysical implications.  Accepted in A&A on August 2023. Link for Arxiv. Link for A&A.

30. Katerina Slavicinska, Marina Gomes Rachid, Will Robson Monteiro Rocha, Ko-Ju Chuang, Ewine Fleur van Dishoeck, Harold Linnartz. The hunt for formamide in interstellar ices: A toolkit of laboratory infrared spectra in astronomically relevant ice mixtures and comparisons to ISO, Spitzer, and JWST observations. A&A, 677, A13, 2023. Link for ArXiv. Link for A&A.

29. D. Itrich, A. Karska, (...), W. R. M. Rocha, (...). Investigating the Impact of Metallicity on Star Formation in the Outer Galaxy. I. VLT/KMOS Survey of Young Stellar Objects in Canis Major. ApJSS, 267, 46, 2023. Link for ArXiv. Link for ApJS.

28. J. A. Sturm, M. K. McClure, (...), W. R. M. Rocha, (...). The edge-on protoplanetary disk HH 48 NE II. Modeling ices and silicates. A&A, 677, A18, 2023. Link for ArXiv. Link for A&A.

27. J. A. Sturm, M. K. McClure, (...), W. R. M. Rocha, (...). The edge-on protoplanetary disk HH 48 NE I. Modeling the geometry and stellar parameters. A&A, 677, A17, 2023. Link for ArXiv. Link for A&A.

26. H. Beuther, E.F. van Dishoeck, (...), W. R. M. Rocha, (...). JOYS: JWST Observations of Young protoStars: Outflows and accretion in the high-mass star-forming region IRAS23385+605. A&A, 673, A121, 2023. Link for ArXiv. Link for A&A.

25. W. R. M. Rocha, P. Woitke, S. Pilling, W. -F. Thi, J. K. Jørgensen, L. E. Kristensen, G. Perotti, and I. Kamp. Simulation of CH3OH ice UV photolysis under laboratory conditions. A&A, 673, A70, 2023. Link for pdf.

24. S. Pilling, W. R. M. Rocha, G. A. Carvalho , H. A. de Abreu. Mapping the evolution of pure CO2 ices irradiated by ions, UV, and electrons using the upgraded PROCODA code (employing an effective rate constant ordering by thermochemistry data). Advances in Space Research, in press, 71, 5466, 2023 Link for pdf.

23. M. K. McClure, W. R. M. Rocha, K. M. Pontoppidan et al. An Ice Age JWST inventory of dense molecular cloud ices. Nature Astronomy, 7, 431, 2023. DOI: https://doi.org/10.1038/s41550-022-01875-w. Link for ArXiv.

2022

22. W. R. M. Rocha, M. G. Rachid, B. Olsthoorn, E. F. van Dishoeck, M. K. McClure, H. Linnartz. LIDA - The Leiden Ice Database for Astrochemistry. A&A, 668, A63 (2022). Link for A&A. Link for ArXiv. Watch the talk (IAU General Assembly, Busan - South Korea).

21. M. G. Rachid, W. R. M. Rocha, H. Linnartz. Infrared spectra of complex organic molecules in astronomically relevant ice mixtures. V. Methyl cyanide (acetonitrile). A&A, 665, A89 (2022). Link for A&A. Link for ArXiv.

20. E. Kosmaczewski, L. Stawarz, W. R. M. Rocha, S. S. Shenoy, and A. Karska. Spectroscopic Diagnostics of the Mid-Infrared Features of the Dark Globule, DC 314.8–5.1, with the Spitzer Space Telescope. ApJ, 934, 94 (2022). Link for ApJ. Link for ArXiv.

19. J. He, S. J. M. Diamant, S. Wang, H. Yu, W. R. M. Rocha, M. Rachid, H. Linnartz. Refractive index and extinction coefficient of vapor-deposited water ice in the UV-Vis range. ApJ 925, 179 (2022). Link for ArXiv. Link for pdf.

18. S. Pilling, G. A. Carvalho, W. R. M. Rocha. Chemical evolution of CO2 ices under processing by ionizing radiation: Characterization of non-observed species and chemical equilibrium phase with the employing of PROCODA code. ApJ, 925, 147 (2022). Link for pdf. 

2021

17. W. R. M. Rocha, G. Perotti, L. E. Kristensen, J. K. Jørgensen. Fitting infrared ice spectra with genetic modelling algorithms. Presenting the ENIIGMA fitting tool. A&A 654, A158 (2021). Link for pdf. Watch the talk (IAU General Assembly, Busan - South Korea).

16. Kamp, I., Honda, M., Nomura, H., (...), Rocha, W. R. M., Roelfsema, P., Santos, F., Shimonishi, T., (...), Wyatt, M., Ysard, N. The formation of planetary systems with SPICA. PASA 38, e055 (2021). Link for ArXiv. Link for PASA.

15. G. Perotti, J. K. Jørgensen, H. J. Fraser, A. N. Suutarinen, L. E. Kristensen, W. R. M. Rocha, P. Bjerkeli, K. M. Pontoppidan. Linking ice and gas in the λ Orionis Barnard 35A cloud. A&A 650, A168 (2021). Link for pdf.

2020

14. G. Perotti, W. R. M. Rocha, J. K. Jørgensen, L. E. Kristensen, H. J. Fraser, K. M. Pontoppidan. Linking ice and gas in the Serpens low-mass star-forming region. A&A 643, A48 (2020). Link for pdf.

13. W. R. M. Rocha &  S. Pilling. Tracking the evolutionary stage of protostars by the abundances of astrophysical ices. ApJ, 896, 27, 2020. Link for pdf.

12. M. G. Rachid,  S. Pilling,  W. R. M. Rocha,  A. Agnihotri,  H. Rothard,  P. Boduch. Processing of 72-K water-rich ices by keV and MeV oxygen ions: implications for the Saturnian moon Enceladus. MNRAS, 494, 2396, 2020. Link for pdf.

11. W. R. M. Rocha, S. Pilling, A. Domaracka, D. P. P. Andrade, H. Rothard, P. Boduch. Infrared Complex Refractive Index of N-containing astrophysical ices free of water processed by cosmic-ray simulated in laboratory. Spec Acta Part A, 228, 117826, 2020. Link for pdf.

2019

10. S. Pilling, W. R. M. Rocha et al. Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments. RSC Adv., 9, 28823.  Link for pdf.

2018

9. W. R. M. Rocha & S. Pilling. The role of external far-ultraviolet irradiation in the survival of astrophysical ices in Elias 29. MNRAS, 478, 5190. 2018. Link for pdf.

2017

8. F. A. Vasconcelos, S. Pilling, W. R. M. Rocha, H. Rothard, P. Boduch. Energetic Processing of N2:CH4 ices employing X-Rays and Swift Ions: implications for icy bodies in the outer Solar System. ApJ, 850, 174. Link for pdf.

7. F. A. Vasconcelos, S. Pilling, W. R. M. Rocha, H. Rothard, P. Boduch, J. J. Ding. Radiolysis of N2-rich astrophysical ice by swift Oxygen ions: Implication for space weathering of outer solar system bodies. Physical Chemistry Chemical Physics. Link for pdf.

6. F. A. Vasconcelos, S. Pilling, W. R. M. Rocha, H. Rothard, P. Boduch, J. J. Ding. Ion irradiation of pure and amorphous CH4 ice relevant for astrophysical environments. Physical Chemistry Chemical Physics. DOI: 10.1039/C7CP00883J. Link for pdf. 

5. W. R. M. Rocha, S. Pilling, A. L. F. de Barros, D. P. P. Andrade, H. Rothard, P. Boduch. Infrared complex refractive index of astrophysical ices exposed to cosmic rays simulated in the laboratory. MNRAS, 464, 754. 2017. Link for pdf. 

2015

4. Jean-Baptiste Bossa, Belén Maté, Coen Fransen, Stéphanie Cazaux, Sergio Pilling, W. R. M. Rocha, Juan Ortigoso, Harold Linnartz. Porosity and band-strengths measurement of multi-phase composite ices using mid-infrared optical constants and extended e effective medium approximations. ApJ, 814, 47. 2015. Link for pdf.

3. W. R. M. Rocha & S. Pilling. Computational modeling of the class I low-mass protostar Elias 29 applying optical constants of ices processed by high energy cosmic ray analogs. ApJ, 803, 18, 2015. Link for pdf.

2. S. Pilling, A. Bergantini, F. de A. Vasconcelos, P. Boduch, W. R. M. Rocha. Triggering photochemical processes in frozen extraterrestrial worlds by soft X-rays. Journal of Physics. Conference Series (Print), v. 635, p. 112104, 2015. Link for pdf.

2014

1. W. R. M. Rocha & S. Pilling. Determination of optical constants n and k of thin films from absorbance data using Kramers-Kronig relationship. Spec Acta Part A, 123, 436, 2014. Link for pdf.

Citations