Supernova SN 2024ggi and its
progenitor in
NGC 3621
To date, it is the brightest
supernova of 2024.
VIDEO
The supernova was discovered by
ATLAS on 11 April 2024.
More information and images
here:
https://rochesterastronomy.org/sn2024/sn2024ggi.html
All supernovae updates here:
https://rochesterastronomy.org/snimages/index.html
TNS [Transient Name Server]
entry for 2024ggi :
https://www.wis-tns.org/object/2024ggi
Wikipedia page for NGC 3621:
https://en.wikipedia.org/wiki/NGC_3621
The
candidate progenitor of SN 2024ggi can be
found in the
Hubble Picture of the week
posted on 14 October 2013 .
Note: In this image, north
is 69.0° right of vertical.
The red star in the center [the
candidate progenitor] has
previously been cataloged by the
VISTA Hemisphere Survey as
VHS J111822.09-325015.2
It was also cataloged in the
Hubble Source Catalog for
NGC 3621 as MatchID 140066549
with coordinates RA
169.59202035259474 , DEC
-32.83757282765759
Compare with the published
coordinates of SN 2024ggi :
RA 169.592030529 , DEC -32.8375756395
The difference is RA
0.00001017640526 , DEC
0.00000281184241 , which is
about .038 seconds of arc.
Another view of the candidate
progenitor dated 2003-02-03.
Note, in this view, North is up.
This screenshot comes from the
Hubble Legacy Archive from
this URL .
Another view of the candidate
progenitor dated 1994-12-27.
Note: In this screenshot, North is up.
This screenshot comes from the
Hubble Legacy Archive from
this URL . Note:
In the archive image, South is
up.
More discussion of the
progenitor of SN 2024ggi at the
following 3 links:
https://www.wis-tns.org/astronotes/astronote/2024-100
https://www.wis-tns.org/astronotes/astronote/2024-105
https://www.wis-tns.org/astronotes/astronote/2024-107
Further reading:
Early flash-ionization lines in
SN 2024ggi revealed by
high-resolution spectroscopy
by Thallis Pessi et al., 3 May
2024.
SN 2024ggi in NGC 3621: Rising
Ionization in a Nearby,
CSM-Interacting Type II
Supernova by Wynn
Jacobson-Galan et al., 29 April
2024.
The direct identification of
core-collapse supernova
progenitors by Schuyler D.
Van Dyk , 18 September 2017.