HOYS Citizen Science

Newsletter Contents

Welcome to the HOYS newsletter for October. Besides a brief general overview it mainly focusses on two target priorities for the coming months. We close with a brief survey to see if people would be interested to hold a brief HOYS online meeting at some stage, and repeat our call for a volunteer to help with the data base server.

General Project Update

We have now collected over 32100 images and stored about 146 million brightness measurements in our database. Detailed target by target statistics are alway available at the database server website. Please keep imaging all regions in all filters as often as you can. In particular since our main telescope delivering data (our scope at the University of Kent) is currently out of action due to faulty equipment. There are two special calls for priority observations below. Both will be pinned as announcements on our social media platforms as well.

Priority imaging of KH15D in Halpha

From October 1st we have started to monitor the object KH15D near NGC2264 with the 2m Liverpool Telescope. This will continue for the entirety of the visibility, i.e. until the end of March. Weather and Moon position permitting we will obtain deep images each night in the U, B, V, R, I, and Z-band. We originally wanted H-band data instead of Z, but the infrared instrument will not be available for the entire semester.
We would also like to obtain deep images in H-alpha of the source. Thus, if you have an H-alpha filter please try to obtain a deep image of the source whenever possible during this winter. The source is slightly to the South of the nominal coordinates of the NGC2264 field. Thus, please make sure that KH15D is in the filed of view (RA=06:41:10.3, DEC=09:28:33.2, just North of the Cone Nebula), and submit the data for the NGC2264 (target 004) field.

Priority imaging of SigmaOri

HOYS is taking part in providing ground based follow up for the ULLYSES legacy program of the HST. This program will use 1000 HST orbits to observe spectra of young stars in the ultra-violet - an ability Astronomy will loose when the HST is retired.
All target stars for the program can be found on the project website. Three of these targets are already in one of our fields - the SigmaOri cluster (target 005). These are the objects SO518 (V505 Ori), SO583 (TX Ori), and SO1153 (V510 Ori). We would like to encourage everyone to observe those targets each night in all filters (B,V,R,I,Ha and U if you have) to provide optical broad band photometry for those objects. These are needed to put the UV spectra into context as all those sources are highly variable.
Please judge from the coordinates for the objects (listed below) and your field of view if you need more than one frame to catch all of them. They easily fit into a one degree field of view around our nominal SigmaOri coordinates, but if you have a smaller field you might want to take several images. You should, however, submit all these images for target 005.
On nights when the HST is not taking spectra of the sources, one observation (or two) per night is sufficient (please stack if you take more than one frame per filter). The day before, the day after and the day(s) when the spectra are taken by the HST, please take as many images as you can and submit them all individually (if they are deep enough for the objects to be visible), so we are able to accurately measure the brightness and variability of the sources when the spectra are taken. The predicted HST observing times for the objects should always be listed in this document. Currently, the three targets are predicted to be observed early December for a period of 2-4days. But please check if those dates change.

Target RA DEC Spectral Type M* log(dm/dt) AV V
SO518 5h38m27.26s -2d45m09.7s K6.0 0.75 -8.54 0.0 14.16
SO583 5h38m33.69s -2d44m14.1s K4.5 1.09 -8.13 0.0 12.06
SO1153 5h39m39.83s -2d31m21.9s K5.5 0.88 -8.38 0.2 14.30
Table1: Target Coordinates and apparent V magnitudes.

HOYS online meeting

We have been discussing to hold an online meeting for HOYS participants. This would contain some talks, e.g. about the history and science of HOYS, future plans as well as room for discussions and presentations from participants.
As a first step we simply want to find out if people are interested in something like this. Hence, if you are, please let us know by filling out our Doodle Poll. Please note, the dates, which are in the past, are not when we plan to host the meeting. The timeslots available are simply an indication of the time and day of the week, people would be able to attend such a meeting. Thus, please select any number of days of the week and times (morning, afternoon, evening - ALL UK time) you would be able to make.

Volunteer to look after our database

Our server with the main database is essential for the functioning of the project. We had this set up by a paid computing student some years ago and it has been working fine ever since. However, our ability to keep the database up to date and make sure it is future proof (for larger amounts of data we are anticipating) is currently quite limited as we do not have the relevant knowledge in house anymore to do this. Furthermore, there are many improvements to the database and web interface we would like to make.
Hence, we are looking for a currently unpaid (but see below) volunteer that helps us to look after the database. The relevant person will need experience with unix, github, databases, python, django, mysql, and html. If you are qualified please get in touch with us. Or if you know someone who would be able and willing to do this, that person should get in touch. We will then make a selection of the best candidate.
We are currently writing a funding proposal to make this a payed 'consultancy' position at a rate of £100-200 a day. So there is the prospect of this becoming a funded position at a later stage.
HOYS Citizen Science
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