Jeffrey McKaig, George Mason UniversityWhy Are Optical Coronal Lines Faint in Active Galactic Nuclei? Forbidden collisionally excited optical atomic transitions from high ionization potential (IP~54eV) ions (e.g., Ne4+, Fe10+, Ar10+), are known as optical coronal lines (CLs). The spectral energy distribution (SED) of active galactic nuclei (AGN) typically extends to hundreds of electron volts and above, which should be able to produce such highly ionized gas. However, optical CLs are often not detected in AGN using large scale optical surveys such as the SDSS. In this talk I will present recent photoionization calculations with the Cloudy spectral synthesis code which determine possible reasons for the rarity of these optical CLs. I will report on the observability of optical CLs given the dust content and metallicity of the gas, as well as the ionizing slope of the incident AGN SED. Our main conclusions are (1) dust reduces the strength of most CLs by ~three orders of magnitude, primarily as a result of depletion of metals onto the dust grains. (2) In contrast to the CLs, the more widely observed lower IP optical lines such as [O III] 5007A, are less affected by depletion and some are actually enhanced in dusty gas. (3) In dustless gas many optical CLs become detectable, and are particularly strong for a hard ionizing SED. This implies that prominent CL emission likely originates in dustless gas. I will also present recent work our group has conducted which indeed suggests dust is being destroyed in objects with CL emission and may indicate an important stage in AGN host-galaxy evolution.

More info about SHaW's Group Sessions. (https://studenthealth.uconn.edu/mental-health/group-therapy/) Maternal Health Group This support group for pregnant and parenting students is designed to provide education and support around the transition to parenthood and navigating the stress of higher education. This group will be co-facilitated by a licensed clinical social worker and an APRN. Specific topics to be discussed include exploring transitions to parenthood, discussing mental health concerns, promoting healthy sleep habits, attachment and bonding, creating healthy work/school/life balance, and many others. Students are encouraged to come as they are and should feel comfortable to bring their babies/children along! To join this group therapy session, please call SHaW at 860-486-4700. (tel:860-486-4705) This session is held by Natasha Welz, LCSW and Carly Odesina, APRN   For many concerns that students face – like overwhelming stress, anxiety, difficult relationships, depression, academic difficulties, and more – group therapy is the best option for support and healing. Facilitated by Student Health and Wellness (SHaW) counselors, our therapy groups encourage peer support, promote emotional wellbeing, and increase a felt sense of connection. Participants often find that they feel less alone in their struggles, and walk away with newfound support and ideas for coping.

Students who may benefit from attending a Let's Talk: Mental Health Office Hours session include:Students who want help connecting to resources but are unsure where to begin Students who are looking for advice on a non-clinical issue Students who are unsure about therapy and are curious about what it is like to talk to a therapist Students who may have concerns about the mental health of a friend and seek advice on how to support their friend If a student is not an imminent risk, and is refusing your support in contacting our office, you may also consider contacting the UConn Student CARE Team (https://studentcareteam.uconn.edu/). Providers rotate weekly on Fridays! Check out more of our mental health providers here (https://studenthealth.uconn.edu/staff-directory/?&group=MENTAL%20HEALTH%20PROVIDERS).  Please note: Drop-in hours are quick 15-20 minute sessions and do not require scheduling or adding to your calendar.

Kassandra CostaWoods Hole Oceanographic InstitutionHost: Dave LundTime & Date: 11:00 am, Friday, April 25, 2025Place: Lowell Weicker Building, Seminar Room 103 (or Webex)Request Seminar InformationCancellation & Additional Seminar Details (https://marinesciences.uconn.edu/seminar/seminar1253/)If you are an individual with a disability and need accommodations, please contact 860-405-9152 (tel:+18604059152) or email marinesciencesseminars@uconn.edu (mailto:marinesciencesseminars@uconn.edu).  This is an Honors Event.* See tags below for categories. #UHLevent11060*This UHL Event # may only be used a maximum of three times for the purposes of meeting the requirements of the Honors Laureate.

Join SHaW in the lobby to learn more about Safe Haven!

Stop by and meet Otis on your way in to lunch at Whitney! Otis is a French Bulldog, and although he is not a therapy dog, he belongs to a dining staff member at Whitney and loves to meet and greet people! Otis will be near the Whitney entrance for his meet and greet. Fun Facts about Otis:Otis was born in Sioux Falls, South Dakota. Took his first plane ride at 7 months old. He's a fantastic fetcher (Not keen on letting go after the fetch) Otis has a doggie Fitbit on and has reached his step count of 2.5 miles for 274 days in a row. Otis is an Aries born on April 14th. Adamant that squirrels can't be trusted. Check out photos (https://www.facebook.com/share/p/1XP6GiTtVc/) of when Otis stopped by at 5 months old for a visit at Buckley in 2023.