Reporting brown dwarfs

How do I go about reporting brown dwarfs: indeed does anyone do that? I have more than 25 objects within our galaxy that appear to move at varying speeds. I have reported many SN with TNS so I know the procedure, but I have no idea how to report moving objects thought to be brown dwarfs. Cheers for any help.

Can you tell us more about your methods? Do you include Gaia measurements in your analysis?

Thankyou for your reply :slightly_smiling_face: I am planning to use JWST COSMOS objects and then compare them to the catalogues in Skyserver, Aladin and SIMBAD. I’m curious as participants in an informal thread in the current Galaxy Zoo project collected 362 candidates at high redshifts of z>7 (up to z~13). However, as more of them are investigated, ~20% are turning out to be likely brown dwarfs or objects within our galaxy. As an example, we put forward the object below as a ā€˜Little Red Dot’ to a leading scientist, only to find it had movement and was classed as a high-motion brown dwarf.
COSMOS ID: 639188 COSMOS-Web

Hmmm. Well, I’d suggest two options. Once you’ve written up a detailed description of both your methods and your findings, consider posting a draft of it here. We might be able to provide some suggestions. You might then submit your work as a paper to the JAAVSO (not sure if it fits into their subject material, but worth a shot), or maybe submit it to arXiv. You’ll need to have some assistance to do the latter, if you’re not already an arXiv proposer, but people here can help you with that, too.

Another place to get feedback is the ā€œScientific Amateur Astronomyā€ forum on cloudynights.com.

Good luck! Keep us posted.

While I could try to write a scientific study (I presume you are being serious) then I would try to do so. I thought a reported BD observation might be more like the TNS where you fill in a form online and that produces a scientific acknowledgement having done so. BDs, or ā€˜failed stars’, aren’t something I’m particularly interested in, but finding dozens of new ones would be worth reporting. Keep up the good work :slight_smile:

A quick google search of ā€œWho is studing brown dwarfs and reporting themā€ give some info on places to start you searching on how, where to report.

How do you know they are brown-dwarfs? Have you checked that they aren’t minor planets? What magnitude are these objects? What is the rate of movement across the sky? Many other questions…

In the world of large surveys, JWST, many infra-red telescopes in space and on the ground… I have to doubt they are new objects.

Jim (DEY)

Here is one…

The thing is, I’m pretty sure that there is no group dedicated to keeping track of a list of very faint red stars with high proper motions (unlike the groups which do keep updated lists of supernovae or exoplanets, for example). If you find just one or two such objects, then probably it’s not worth doing anything. But if you happened to find a reasonably large set (say, 30 or 50 or more), then you might indeed save someone else a bit of time in the future by making your list public – lest she also spend time taking spectra, hoping to find a high-redshift object.

Publishing a short paper seems to me to be the best way to put the information ā€œout thereā€, where there’s a least a chance that someone else might find it. In the best case, you might be able to put your catalog into Vizier.

Without spectroscopy it is difficult to pin down exactly what an object is. It brings me in mind of the object Capotauro, which so far has five different solutions but is probably a brown dwarf with a very low temparature that mimics an object at redshift z~32 (link below). Contacting Backyard Worlds is a good idea and is something I’d considered. They’ve discovered 160+, so would they be interested in a couple of dozen? Since I started this thread, I’ve found a few of our high-redshift candidates in studies on brown dwarfs, but as there is no central database that we could cross-match with, searching becomes very hit-or-miss. Deciding whether an object exists a few 100 million years after the BB or is within our galaxy seems seems more problematic than it might first appear.

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