Search found 8 matches

by mudman
Thu Oct 22, 2009 2:34 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Martian Dust Devil Trails (21 Oct 2009)
Replies: 35
Views: 5275

Re: Martian Dust Devil Trails (21 Oct 2009)

The pseudo bar code has me intrigued, having looked at it in a couple of different views I'm seeing some oscillatory traces including a series of dampened oscillations, rather than separate lines. Not possible it would seem.
by mudman
Wed Oct 21, 2009 10:53 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Martian Dust Devil Trails (21 Oct 2009)
Replies: 35
Views: 5275

Re: Martian Dust Devil Trails (21 Oct 2009)

The picture in greyscale, magnified, middle left hand side at http://hirise-pds.lpl.arizona.edu/PDS/EXTRAS/RDR/ESP/ORB_014400_014499/ESP_014426_2070/ESP_014426_2070_RED.NOMAP.browse.jpg raises another ton of questions. Just for one, how can there be an overhang with dust devil tracings apparenly goi...
by mudman
Fri May 08, 2009 2:11 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: barred elliptical ringed galaxy (Perseus Cluster 2009 May 8)
Replies: 9
Views: 1630

barred elliptical ringed galaxy (Perseus Cluster 2009 May 8)

APOD 5/8/2009 seems to show a barred elliptical ringed galaxy. It is on the right side just above center. Google returns 0 results for "barred elliptical ringed galaxy" and only 2 results for "barred elliptical galaxy". This is an unusual configuration. The "ring", if i...
by mudman
Mon Apr 25, 2005 9:13 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: NGC 6946 Fireworks Galaxy
Replies: 8
Views: 5957

a natal bubble

The 2005 April 15 RCW 79: Stars in a Bubble http://antwrp.gsfc.nasa.gov/apod/ap050415.html "In fact, this penetrating infrared picture reveals groups of new stars as yellowish points scattered along the bubble's edge. One remarkable group still lies within its own natal bubble at about 7 o'cloc...
by mudman
Tue Apr 05, 2005 6:02 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: NGC 6946 Fireworks Galaxy
Replies: 8
Views: 5957

On Jan 26 The Meal suggested the unusual formation noted in the upper left hand corner of APOD 2005 Jan 25 Fireworks galaxy might be "Is it not the irregular dwarf galaxy UGC 11583?" It appears not, based on the following: Companions and interactions in the NGC 6946 system Authors: Pisano ...
by mudman
Wed Feb 23, 2005 3:26 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: NGC 6946 Fireworks Galaxy
Replies: 8
Views: 5957

http://www.seds.org/messier/xtra/ngc/n6946.html lists eight supernovas observed in NGC 6946. Each supernova has a coordinate set. How is this coordinate system applied to an object such as NGC 6946? Any help will be appreciated.
by mudman
Fri Jan 28, 2005 4:36 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: NGC 6946 Fireworks Galaxy
Replies: 8
Views: 5957

dwarf galaxy image

The apparent dwarf galaxy seen near the upper left hand corner of APOD 2005 Jan 25 image of NGC 6946 is shown in two images isolated from NGC 6946 images at NOAO url http://www.noao.edu/outreach/aop/observers/n6946.html
by mudman
Wed Jan 26, 2005 3:01 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: NGC 6946 Fireworks Galaxy
Replies: 8
Views: 5957

NGC 6946 Fireworks Galaxy

Near the upper left hand corner of APOD 2005 Jan 25 is what appears to be a circular star cluster with an arm of NGC6946 wrapped around it. Are this part of NGC 6946? I haven't seen anything like this in looking at pictures of a couple of hundred different galaxies.