[Aavso-photometry] Variable in the field of TY BOO

[Michael Sallman]

http://www.konkoly.hu/cgi-bin/IBVS?5700#90

Mike

Richard Huziak wrote:
> Hi Yenal,
> 
> If you search SIMBAD, you find the star is:
> 
> *2MASS J15004755+3509514 * -- Star
> *at 15 00 47.6 +35 09 52
> 
> SIMBAD also references the star in IBVS 5700
> 
> 
> Searching in *VSX* with a 15' radius search under TY Boo reveals the 
> star is listed here:
> 
> http://www.aavso.org/vsx/index.php?view=detail.top&oid=144501
> 
> **under the USNO number. **The star should have plotted on your TY Boo 
> chart if you have 'plot all variables' turned on.
> 
> 
> It is an RRab star, period 0.348836d, range 14.8 - ? R mag discovered in 
> 2004. (You can see the RRab character from your curve - slow decline, 
> bottom flat then a quick rise toward max.  Too bad you couldn't have run 
> another hour - looks like you would have seen the maximum.
> 
> Whether or not the data is entered into the AAVSO database, you can 
> always improve the data in VSX by providing a complete range for the 
> star, and maybe improving the period.  There is also another nearby 
> variable that you can be taking data on.
> 
> 
> 
> rick
> 
> 
> 
> *
> 
> Yenal Ogmen wrote:
>> Hi all,
>> Last night, while observing minima of TY Boo, I realized that one of 
>> the field stars is varying. I checked VSP and saw that it is labeled 
>> as USNO-A2.0 1200-07442272. You can check the link below to see LC of 
>> the field. At the top, is LC of secondary and then primary minima of 
>> TY Boo and at the below you can see u shaped LC of the related star. 
>> What I want to ask is, where can I find info about this star? I want 
>> to know about its nature. Is it EB or what?
>> http://www.lookatcyprus.com/astronomy/yenalogmen/tyboo.jpg
>>
>> Arne, do you think that I should enter its photometry to the database?
>>
>> Thank you.
>>
>>  
>> Yenal Ögmen
>> Green Island Observatory (B34)
>> www.greenislandobservatory.com
>> Geçitkale
>> North Cyprus
>>
>>
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>