Concours canadien « Nommez une exoplanète » !

Demanda L’Union astronomique internationale aux Canadiennes et aux Canadiens de proposer de nouveaux noms pour l’étoile HD 136418 et son exoplanète, HD 136418b. Nous avons reçu plus de 500 suggestions! Une liste restreinte de noms a été approuvée par un jury de spécialistes.

Le vote s’est terminé le 17 novembre 2019.

L’UAI a annoncé les noms des gagnants en décembre 2019.

Étoile : Nikawiy
Exoplanète : Awasis
Description : Nikawiy et Awasis sont les mots pour « mère » et « enfant » en langue crie. La planète est en orbite autour de son étoile comme un enfant autour de sa mère, toujours avec elle et à la recherche de sa lumière.
Proposé par : Amanda Green (Alberta) et Wilfred Buck (Manitoba)

Propositions de noms pour l’étoile HD 136418 et son exoplanète.

Étoile : Acakos
Exoplanète : Cakapis
Description : Acakos et Cakapis signifient « étoile » et « petit esprit » en langue crie.
Proposé par : Wilfred Buck (Manitoba)

Étoile : Natseq
Exoplanète : Nanuq
Description : Natseq et Nanuq signifient « phoque » et « ours polaire » en langue Inuktitut. Comme la planète autour de son étoile, l’ours polaire tourne autour du phoque pendant la chasse.
Proposé par : Kim Hula-Hetu (Alberta), Louise Teira-Chapuy (Québec), Jennifer Kneller (Alberta)

Étoile : Mitig
Exoplanète : Binesi
Description : Mitig et Binesi signifient « arbre » et « oiseau » en langue ojibwé. L’idée d’une planète entourant son étoile est liée à celle d’un oiseau volant autour d’un arbre.
Proposé par : Brianne Valdes (Ontario)

Report on the CASCA 2019 Teachers Workshop / Rapport sur la journée de formation pour enseignants – CASCA 2019

By / par Julie Bolduc-Duval, Discover the Universe / À la découverte de l’univers
(Cassiopeia – Winter / hivers 2019)

La version française suit

A workshop for secondary school teachers was one again organized during the CASCA annual meeting last June. Being in Montreal, it was decided that the workshop should be presented in French as the primary language, with a few presentations in English.

Because of the timing of the annual meeting (during the very last week of school in Quebec), we were afraid the response from teachers wouldn’t be great. In the end, the opposite happened: over 40 teachers registered and we had to close registrations over one week before the event on June 19, 2019.

The day was filled with presentations by scientists and activities for teachers to implement in class. Special thanks to our guest speakers: Marie-Lou Gendron-Marsolais (ALMA), Pierre Chastenay (UQAM), Frédérique Baron (UdeM), Mary Beth Laychak (CFHT), Paula Boubel (McGill), and Nathalie Ouellette (UdeM). The activities included gravitational lensing with wine glass bottoms and Pocket Black Hole, simulating an exoplanet transit, introduction to WorldWideTelescope and more.

The workshop was once again an outstanding success! The comments from participants were extremely positive and they enjoyed being part of the CASCA meeting and the opportunity to explore the scientific posters. The workshop even created new opportunities and partnerships: Marie-Lou Gendron-Marsolais was invited to present remotely to many schools through the program Écoles en réseau (networking schools) after a participant in our workshop saw her talk on black holes. This was an amazing opportunity for many elementary classrooms in Quebec to talk to a scientist live from Chile.

The workshop was possible due to the financial contributions of Discover the Universe, CASCA and the Canada-France-Hawaii Telescope.

If you would like more information about the workshop, such as the activities presented, or if you’re interested in helping out with the next edition of the workshop at CASCA2020, please contact me at julie@discovertheuniverse.ca.





Une journée de formation pour enseignants a encore une fois été organisée en marge du congrès de la CASCA en juin dernier. Étant à Montréal, il fut décidé de présenter cette formation en français majoritairement, avec quelques présentations en anglais.

Puisque le congrès était plus tard dans l’année (19 juin, ce qui correspond à la dernière semaine d’école au Québec), nous avions peur que peu d’enseignants puissent participer. Finalement, l’inverse s’est produit : nous avons reçu plus de 40 inscriptions et avons dû fermer les inscriptions plus d’une semaine avant l’évènement!

L’horaire de la journée était rempli de courtes présentations scientifiques et d’activités pour les enseignants à faire en classe. Merci à nos conférenciers invités : Marie-Lou Gendron-Marsolais (ALMA), Pierre Chastenay (UQAM), Frédérique Baron (UdeM), Mary Beth Laychak (CFHT), Paula Boubel (McGill) et Nathalie Ouellette (UdeM). Les activités présentées incluaient : lentilles gravitationnelles avec fonds de coupes à vin et l’application Pocket Black Hole, simuler un transit d’exoplanètes, introduction à WorldWideTelescope et plus encore.

La formation a encore une fois été un grand succès! Les commentaires reçus des participants sont extrêmement positifs et ceux-ci ont apprécié faire partie du congrès CASCA et avoir l’opportunité d’explorer les posters scientifiques. La formation a aussi créé des opportunités nouvelles : une participante a par la suite invité Marie-Lou Gendron-Marsolais à faire une présentation à distance en direct du Chili avec des classes du primaire partout au Québec grâce à l’organisme Écoles en réseau. Ce fut une belle occasion pour toutes ces classes de rencontrer virtuellement une scientifique et lui poser des questions.

La formation pour enseignants fut réalisée grâce au support financier d’À la découverte de l’univers, CASCA et du Télescope Canada-France-Hawaii.

Si vous voulez plus d’information sur la formation, par exemple sur les activités présentées, ou si vous êtes intéressés à aider lors de la prochaine journée de formation à CASCA 2020, écrivez-moi à julie@discovertheuniverse.ca.

President’s Report

By / par Rob Thacker (CASCA President)
(Cassiopeia – Winter / hivers 2019)

Dear CASCA Members, 

This fall has been a busy few months! I hope you have had a chance to recover from the efforts of proposal writing on top of detailed LRP consultations.

Since I last communicated, we have a welcomed the new CASCA Administrator, Jessica Marsano, and I’d like to encourage you to both welcome Jessica and say a big thank you to Susan Di Francesco who officially steps down on December 31st. On the administrative side we have finally solved the headache that PayPal was presenting, and I’m glad to say as of late November we are again able to accept payments via that route. I encourage anyone to take a read of a Kafka novel and then to send an email to PayPal, as that seems appropriate preparation for dealing with them.

The awarding of this year’s Nobel Prize for Physics for work in astronomy was especially exciting, albeit with the caveats of the known issues with the Nobel awards. After much discussion within the CASCA Board we have the following to say:

The CASCA Board was delighted to see that astronomy and cosmology were the focus of this year’s Nobel Prize for Physics. The work of Jim Peebles (who was born in Manitoba) played a foundational role in many areas of cosmological physics (including the large-scale structure of galaxies and the cosmic microwave background radiation). The other laureates also richly deserve their prizes: the discovery of 51 Pegasi b by Michel Mayor and Didier Queloz opened up the field of exoplanet observations and helped turn it into the spectacularly vibrant area of astrophysics that it is today. We wholeheartedly congratulate Drs Peebles, Mayor and Queloz for their exceptional accomplishments.

Following the awarding of the prize, there has been a number of questions about which particular exoplanet should be acknowledged as the most key discovery. The existence of pulsar planets (e.g.
Wolszczan & Frail, Nature, 355, 145, 1992) and particularly large gas giants/brown dwarfs (Latham et al., Nature, 339, 38, 1989) were known prior to the 51 Pegasi announcement.

In the midst of this, the CASCA Board thought it appropriate to remind members of the work of Bruce
Campbell, Gordon Walker, and Stephenson Yang (ApJ, 331, 902, 1988) which also played an important
role in founding the field of exoplanet research. In particular, we would like to highlight their work on gamma Cephei b. Their long-term monitoring program on the CFHT from 1981 to 1993 had sufficient sensitivity to discover Jupiter-like planets, and with modern statistical methods the 1995 follow-up work of Walker et al. (Icarus, 116, 359, 1995), which included a new analysis of gamma Cephei b data, would be considered a strong detection. The estimated period of 2.52 yrs in that work is very close to the now accepted value of 2.47 yrs.

However, following the 1992 analysis which speculated that the gamma Cephei b signal was close to a
possible pulsation mode, the 1995 work was treated with some skepticism. There is no argument that
the work of Drs Mayor & Queloz, as well as their collaborators, created an unexpected and important avenue of exoplanet research, and while celebrating Mayor and Queloz, we think it appropriate to also celebrate the pioneering work of Campbell, Walker and Yang.

CASCA “Seeds” Program

I’d like to highlight the CASCA “Seeds” program that was announced at the AGM this summer: each year, the CASCA Board will allocate up to $5K of seed funding to activities spearheaded by CASCA
members that benefit the Society. All initiatives and/or events that are consistent with CASCA’s Mission Statement are eligible to receive CASCA Seed funding, though an emphasis will be placed on activities that are difficult to fund via other mechanisms. The intent of the CASCA Seeds program is to support new and/or unique opportunities for CASCA members; the same initiative is therefore unlikely to be funded more than once. 

Full details of the program and application process are available here (English) and here (Francais). We hope that some great new initiatives can grow out of this program!

Sustainability

Anyone who has read through the tremendous list of white papers submitted to the LRP process cannot
have failed to have noticed a very significant number of recommendations put squarely in the hands of CASCA as an organization. On one hand I feel buoyed by the great faith in CASCA that you are showing by making these recommendations, although on the other hand I confess that the entire suite comes across as somewhat daunting. The Board is currently working on determining what to do about these many recommendations, especially given that these recommendations are input into the LRP process, and we need to let that process take its course.

Many very important issues have been brought up, especially around ethical considerations for our field, but one concern stood out for immediate action in the view of several Board members, specifically that of sustainability. I am thus happy to notify the community that the Board has struck an ad hoc committee on sustainability and we are in the process of filling that committee as I write. We have agreed to run this committee in an ad hoc form for one year, with a view to reviewing its progress at the end of 2020.

I’d like to end by again thanking all of you – again – for your efforts in supporting CASCA and the
astronomy community. With a couple of exceptions for our staff members, we are a Society of volunteers and depend entirely on your efforts to make our activities possible.

Happy Holidays, and all the best for 2020!

Rob