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In this paper, we explore how core principles of the mentoring training offered by the Institute for Scientist & Engineer Educators (ISEE) Professional Development Program (PDP) have been adopted by PDP alumni and applied in different contexts. The core themes of the mentoring work conducted by ISEE, which are Inquiry, Equity & Inclusion, and Assessment, form an extensible basis for PDP participants to use as they develop their own mentoring programs. The panel/paper is structured to briefly identify core components of mentoring in the PDP model and then discuss how former PDP participants have applied these in a variety of other venues. With the goal of broadening access & persistence in STEM, the PDP emphasized: the role of ownership and agency, the practice of explanations, the creation of opportunities for recognition, providing formative assessment, and a recognition of and introduction to STEM culture. The PDP has had a unique way of “staying with” participants and provided a framework for mentoring in other modalities including: peer-to-peer, informal, and in the development of new formal programs. These offshoots include key PDP ideas such as: providing support for belonging in STEM, placing value on teaching, promoting adaptability and cultural relevance, and a “training the trainers” modality of mentorship. The panelists will provide examples from programs for undergraduate students, graduate students, teaching professionals, and faculty. The session also provided opportunities for attendees to share their experiences and take-away lessons from the PDP model of mentoring and some of the panel feedback is included in this paper. The ISEE community has a shared vocabulary, toolset, and ethos that continues to inform alumni mentoring since the inception of the PDP. 

Observing in six frequency bands from 27 to 280 GHz over a large sky area, the Simons Observatory (SO) is poised to address many questions in Galactic astrophysics in addition to its principal cosmological goals. In this work, we provide quantitative forecasts on astrophysical parameters of interest for a range of Galactic science cases. We find that SO can: constrain the frequency spectrum of polarized dust emission at a level of Δβ_d≲ 0.01 and thus test models of dust composition that predict thatβ_din polarization differs from that measured in total intensity; measure the correlation coefficient between polarized dust and synchrotron emission with a factor of two greater precision than current constraints; exclude the nonexistence of exo-Oort clouds at roughly 2.9σif the true fraction is similar to the detection rate of giant planets; map more than 850 molecular clouds with at least 50 independent polarization measurements at 1 pc resolution; detect or place upper limits on the polarization fractions of CO(2–1) emission and anomalous microwave emission at the 0.1% level in select regions; and measure the correlation coefficient between optical starlight polarization and microwave polarized dust emission in 1° patches for all lines of sight withN_H≳ 2 × 10²⁰cm⁻². The goals and forecasts outlined here provide a roadmap for other microwave polarization experiments to expand their scientific scope via Milky Way astrophysics.³⁷³⁷

A supplement describing author contributions to this paper can be found athttps://simonsobservatory.org/wp-content/uploads/2022/02/SO_GS_Contributions.pdf.