[vsnet-chat 988] (fwd) SN1998cn (Johnson)

[Taichi Kato <tkato>]

From owner-vsnet-err@kusastro.kyoto-u.ac.jp Sat Jun 20 02:50 JST 1998
Date: Sat, 20 Jun 1998 02:49:56 +0900 (JST)
To: Wayne.Johnson@West.Boeing.com
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From: "Johnson, Wayne P" <Wayne.Johnson@West.Boeing.com>
To: vsnet-chat@kusastro.kyoto-u.ac.jp,
        "isn_chat@mbox.queen.it"
	 <ISN_chat@mbox.queen.it>,
        astro@lists.mindspring.com,
        "'Yamaoka Hitoshi'"
	 <yamaoka@rc.kyushu-u.ac.jp>
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Date: Fri, 19 Jun 1998 10:46:00 -0700
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Subject: [vsnet-chat 0] RE: Supernova 1998cn in NGC 3735
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All,

I imaged what I thought was SN1998cn in NGC 3735 (among the other recent
SNe) last night using the Orange County Astronomers 22-inch telescope at
our Anza Observatory. It appeared to be about magnitude 16, but the
position seems to be about 10" due West of the nucleus, no offset north
or south. I don't have the image in front of me to double-check, but I
am going back up to the observatory tonight to try again, if the weather
cooperates. Am I dreaming? 

Wayne Johnson (aka Mr. Galaxy)

> ----------
> From: 	Yamaoka Hitoshi[SMTP:yamaoka@rc.kyushu-u.ac.jp]
> Sent: 	Thursday, June 18, 1998 7:42 PM
> To: 	vsnet-chat@kusastro.kyoto-u.ac.jp; isn_chat@mbox.queen.it;
> astro@lists.mindspring.com
> Cc: 	yamaoka@rcsvr.rc.kyushu-u.ac.jp
> Subject: 	Supernova 1998cn in NGC 3735
> 
> Dear all,
> 
>   According to IAUC 6944, a new nearby supernova was discovered by 
> M. Schwartz on June 17.48UT.  It was named as 1998cn and located at 
> R.A. = 11h35m54s.4, Decl. = +70o32'10".2 (2000.0).  The host galaxy
> NGC 3735 is of type Sc, nearly edge on.  The offset of new star from
> the center the of host is about 6" west and 10" north, which seems to
> be inside or on the rim of the bulge area of the host.  Note that
> there are some foreground stars around this galaxy.  Reported
> brightness of the new star was 15.8 on discovery and not changed at
> June 18.26UT.  
> 
>   NGC 3735 locates beyond Virgo cluster by delta(m-M) = 1.93 (Turry's
> catalog), which indicate that the standard SNeIa at this location
> would have a maximum brightness as 14.2 and the other type would as 16
> or so (not affected by reddening).  Followup magnitude estimate of
> this star is encouraged.  
> 
> Sincerely Yours,
> Hitoshi Yamaoka, Kyushu Univ., Japan
> yamaoka@rc.kyushu-u.ac.jp
>

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