[vsnet-alert 9173] Fw: Suspected New Dwarf Nova in Cam

Kloehr wkloehr at t-online.de
Mon Dec 18 06:51:30 JST 2006


----- Original Message ----- 
From: David Boyd
To: cvnet-outburst at yahoogroups.com ; BAAVSS alert ; cba-news
Sent: Sunday, December 17, 2006 10:23 PM
Subject: [cvnet-outburst] Suspected New Dwarf Nova in Cam

I was able to observe this object for 2hrs using unfiltered CCD photometry 
on a 0.35m SCT before clouds intervened. It showed superhump-like 
modulations with an amplitude of 0.2 magnitudes and a period, according to 
Peranso, of 0.052+/-0.007days. The mean magnitude was approx 14.85. It 
appears to be another UGSU type dwarf nova.

Regards,
David Boyd
West Challow, UK


----- Original Message ----- 
From: "Hiroyuki Maehara" <mira at cetus-net.org>
To: <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>
Sent: Sunday, December 17, 2006 5:14 PM
Subject: [vsnet-alert 9172] Re: Asking for confirmation of possible new 
object~Mag 15.2


Dear colleagues,

I obtained V and B magnitudes of this object as follows:

object             YYYYMMDD(UT)   mag      code
OT_J055718++683226 20061217.62573 14.95V   Mhh.VSOLJ
OT_J055718++683226 20061217.62839 15.11B   Mhh.VSOLJ

A USNO B1 star is located close to this object:
USNO-B1.0 1585-0088462 RA=05 57 18.45 Dec=+68 32 26.9 B1=19.04 R1=19.23

A ROSAT X-ray source 1RXS J055722.9+683219 is located at about
0.4 arcmin east from this object.

This object seems to be a new dwarf nova.

Regards,
Hiroyuki Maehara

----- Original Message ----- 
From: "Ken'ichi Torii" <torii at ess.sci.osaka-u.ac.jp>
To: <wkloehr at t-online.de>
Cc: <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>; <forum at bav-astro.de>; 
<torii at ess.sci.osaka-u.ac.jp>
Sent: Sunday, December 17, 2006 3:15 PM
Subject: Re: [vsnet-alert 9170] Asking for confirmation of possible new 
object~Mag 15.2


> Dear Wolfgang Kloehr,
>
> I have taken 60 s exposures (in Ic band) with the 14 inch telescope
> and confirmed the presence of the object.
>
> As you note, the faint counterpart seems to be present in the DSS2 red.
>
> Regards,
> Ken'ichi Torii
>
>
>>> Dear List,
>>>
>>> i'd like to report a possible new object ~Mag 15.2CR at Ra.: 05:57:18 
>>> Dec.: +68 :32 :26 from 2006-12-16  03:54:58 UT.
>>> Image and data are here:
>>> http://www.dsi-astronomie.de/New%20object%20near%20ugc3379.htm
>>> Image form 2006-12-16 is a composite of 7 images a 21sec at F6.3. Object 
>>> is visible on all.
>>> The weak pregnator object GSC2.2 N31020007187 is of class 3 = non star.
>>> http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-info=XML&-out.add=.&-source=I/271/out&GSC2.2===N31020007187
>>> Till now i only have this image and i would like to ask wether there is 
>>> someone who can take a confirmation of this. The weather here will be 
>>> bad the next days.
>>> No known minor plantes around this position at this time.
>>> No known variables in GCVS / VSX at this position.
>>>
>>> thanks for your help
>>>
>>> regards
>>> Wolfgang Kloehr
>>>
> 




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