Proto-Planetary Nebulae
Listed are 66 objects which I believe have a good chance of being proto-planetary nebulae. Of the 334 Possible pre-Planetary Nebulae from table 5 of Kohoutek's Catalogue of Galactic Planetary Nebulae, updated version 2000, (CGPN2), sixty were selected for this list. The remaining 6 were selected from articles and papers I had.
Proto-planetary nebula seem to be a short lived phase where an Asymptotic Giant Branch (AGB) star has finished its major mass loss process and is gradually heating up. When the surface temperature of the star reaches around 30,000 K there is enough ultraviolet light to cause the nebula from the mass loss process to glow, thus forming a young PN. In Sun Kwok's “The Origin and Evolution of Planetary Nebula he states that observationally, proto-planetary nebula (PPN) are expected to have the following properties:
PPN should show strong infrared excesses and circumstellar CO emission, suggesting that the remnant of the AGB envelope is still present.
PPN central stars should have effective temperatures between AGB stars and CSPN. Most of the detected PPN are of spectral class F or G supergiants.
PPN should show some evidence that the dust envelope is detached from the photosphere and the AGB phase mass loss has ended. Observationally this is indicated by a double-peak spectral energy distribution.
Since PPN have neutral envelopes, their nebulae will have no line emission and can only be seen in scattered light. Such reflection nebulae would be difficult to see in the visible against the bright central stars. However, assuming that PPN have similar bipolar morphologies as PN, then for objects that are viewed near edge on where the central star is obscured by dust, the nebula can be detected.
The positions are for the year 2000.0. MAGV is the visual magnitude, usually for the central star. SECGPN stands for the Strasbourg - ESO Catalogue of Galactic Planetary Nebulae, published in 1992. AP stands for the Aladin Previewer, an online atlas useful for making finder charts.
Those PPN aligned so that the central star is fully visible will probably not be visible to amateur scopes. In these cases the brightness of the central star totally overwhelms the faint reflection nebula. Since most of these objects are small and faint, a good finder chart is recommended. Also since all the nebulae will be reflection nebulae, don't expect any of your filters to work on them.
IRAS Z02229+6208
02 26 41.8 +62 21 23 MAGV 12.1
SIMBAD has it as a Possible Planetary Nebula.
Not in the SECGPN.
In the CGPN2, table 5.
A good article is 1999ApJ…513..869, “Discovery of Two New Carbon-Rich Proto-Planetary Nebulae: IRAS Z02229+6208 and IRAS 07430+1115”, by Bruce J. Hrivnak and Sun Kwok.
IRAS 04296+3429, GLMP 74, CGCS 680
04 32 56.6 +34 36 11 MGGV 14.2
SIMBAD has it as a Post-AGB star.
Not in the SECGPN.
In the CGPN2, table 5.
This is carbon rich, point symetric PPN. There is a Hubble image of this object on page 135 of 2002RmxAC…13..133, “Bipolar and Multipolar Jets in Protoplanetary and Planetary Nebulae”, by Raghvendra Sahai.
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Westbrook Nebula, IRAS 04395+3601, CRL 618, PK 166-06.1, PN G 166.4-06.5, V 353 Aur
04 42 53.6 +36 06 54 MAGB 16.5
SIMBAD has it as a Planetary Nebula (PN).
In the SECGPN as a PN.
In the CGPN2 as a possible PN.
Named after William E. Westbrook who died on June 4, 1975 at age 26 while his paper on this object was in press (1975ApJ…202..407). This paper also has a good finder chart.
See APOD, September 6, 2000 for a nice image.
The Westbrook Nebula is a bright infrared object, which is associated with a pair of small visual nebulosities, each of which has a diameter of 2-3” separated by 7”. Midway between these nebulosities lies the infrared source. The light from these nebulosities is strongly polarized in a direction which suggest they are reflection nebulae illuminated by a hidden hot star of spectral type B0. Radio Continuum observations reveal a small ionized region embedded in the infrared source. This object is on the ragged edge of becoming a PN. Its central star is about 30,000K and has begun ionizing gas.
IRAS 05113+1347, GLMP 88, PM 2-4
05 14 07.9 +13 50 28
SIMBAD has it as a Post-AGB star.
Not in the SECGPN.
In the CGPN2, table 5.
This is a carbon rich PPN.
IRAS 05341+0852, GLMP 106
05 36 54.2 +08 54 10 MAGV 13.6
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See 1999ApJ…513..869, “Discovery of Two New, Carbon-Rich Proto-Planetary Nebulae: IRAS Z02229+6208 and IRAS 07430+1115”, by Bruce J. Hrivnak and Sun Kwok, for information on this object.
Red Rectangle, IRAS 06176-1032, CRL 915, HD 44179, V777 Mon
06 19 58.2 -10 38 15 MAGV 9.0 SIZE 40”x23”
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See APOD, May 13, 2004 for a nice Hubble image. Also see APOD, November 2, 1995 for a good ground based image.
The name “Red Rectangle”, was coined by M. C. and K. M. Merrill in 1973, see 2004ApJ…127..2362, “ Hubble Space Telescope Imaging of HD 44179, The Red Rectangle”, BY M. Cohen et al.
The optical flux from this object is entirely scattered light from two lobes located above and below a dusty disk, the star being hidden by the disk.
The Red Rectangle has been observed by Andrew Murrell using a 20” f/5.0 reflector from Ilford, Australia. Art Russell has also observed this object at 505X using an 18” reflector at the 1998 Peach Star Gaze south of Atlanta.
IRAS 06530-0213, GLMP 161, PM 1-21
06 55 32.1 -02 17 30
SIMBAD had it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
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IRAS 07131-0147, SRWW 1
07 15 42.6 -01 52 42 SIZE 35”x20”
SIMBAD has it as a possible PN.
In the SECGPN as a possible PN.
In the CGPN2, table 5.
This object has a nice bipolar appearance on the AP red plate. The nebula forms straight sides near the central star. This PPN is oxygen rich and highly polarized.
I tried to observe this object on March 10th, 2004 from Navaho Flats using a 20” f/5 reflector without success. I did manage to observe the central star but nothing of the nebula was visible.
IRAS 07134+1005, GLMP 174, HD 56126
07 16 10.3 +09 59 48
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
This is a carbon rich PPN.
Calabash Nebula, IRAS 07399-1435, OH 231.8+4.2, CRL 5237, QX Pup, Rotten Egg Nebula, GLMP 191
07 42 16.8 -14 42 52
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See APOD, September 3, 2001 for a nice image.
The name “Calabash Nebula”, was given by Vincent Icke and Heather L. Preston due to its peculiar shape, see 1989A&A…211..409.
This is an oxygen rich PPN with a class M9 Mira (period 700 days) buried in a disk of dust. Along the axis of this object, gas speeds outward at 300 km/sec. It is about 1.0 light year across and about 4200 light years distant.
I attempted to observe this object with a 20” f/5 reflector without success from Navaho Flats on February 01, 2000.
IRAS 07430+1115, GLMP 192
07 45 49.8 +11 08 25 MAGV 12.6
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
A good article on this object is 1999ApJ…513..869, “Discovery of Two New, Carbon-Rich Proto-Planetary Nebulae: IRAS Z02229+6208 and IRAS 07430+1115”, by Bruce J. Hrivnak and Sun Kwok.
IRAS 08005-2356, GLMP 202, V510 Pup
08 02 40.7 -24 04 43, MAGV 11.5
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
Optical spectropolarimerty shows this object having an hourglass shape. This is an oxygen rich PPN with the spectra of a high altitude F type supergiant.
IRAS 08143-4406, GLMP 206, PM 1-39
08 16 02.9 -44 16 01
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
This is a carbon rich PPN.
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Frosty Leo Nebula, IRAS 09371+1212
09 39 53.6 +11 58 54 MAGV 10.5 SIZE 12”x8”
SIMBAD has it as a Nebula of Unknown Nature
Not in the SECGPN.
In the CGPN2, table 5.
There is a nice image at http://www.ifa.hawaii.edu/ao/images/proto/fleo.html
This is a bipolar reflection nebula.
The AP blue plate shows ansae on this object.
I was able to observe this object using my old orange C-8 (8” SCT, f/10) from Navaho Flats on June 19, 2001 using an AP finder chart.
IRAS 10158-2844, HD 89353, CD -28 8070, AG Ant
10 18 07.6 -28 59 31
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
He 3-401, IRAS 10178-5958, Th 35-27, Wray 15-543, GLMP 270
10 19 32.2 -60 13 30 MAGV 12.5 SIZE 25”x10”
SIMBAD has it as a Planetary Nebula.
Not in the SECGPN, but in Supplement 1 to the SECGPN as PN G 285.1-02.7.
In CGPN2, table 2 as a possible planetary nebula, PK 285-02.2.
See APOD, July 31, 2002 for a nice Hubble image of this object.
On the AP red plate it looks like a star with pointed ends, like a diamond shape.
A good paper on this object is ApJ…526..854, “Optical and Infrared Observations of the Bipolar Proto-Planetary Nebula Henize 401” by Pedro Garcia-Lario, Angels Riera and Arturo Mnchado.
I was able to observe this object using a 20” f/5 reflector on April 4th, 2003 near Wongan Hills, Western Australia. The AP chart really helped in locating this small object.
Roberts 22, IRAS 10197 -5750, CRL 4140, OH 284.18-.79, He 2-404
10 21 34.1 -58 05 49 MAGV 13.0 SIZE 10”x4”
SIMBAD has it as a Wolf- Rayet Star.
Not in the SECGPN.
In the CGPN2, table 5.
See http://ad.usno.navy.mil/pne/images/rob22.jpg for an image of this object.
The name “Roberts 22”, comes form its entry as object number 22 in M. S. Robert's 1962 catalogue of Wolf-Rayet stars.
I was able to observe this object on February 10th, 2004 using a 20” f/5 reflector near Wongan Hills, Western Australia. Couldn't have found it without my AP finder chart.
IRAS 11385-5517, HD 101584, V885 Cen, CD -54 4274
11 40 58.8 -55 34 26 MAGV 7.0
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
This PPN has a strong excess of far-infrared emission with bipolar OH maser emission and a high latitude F type supergiant spectra.
IRAS 12175-5338, GLMP 321, V1024 Cen, CPD -53 5072, CD -53 4543, SAO 239853
12 20 15.1 -53 55 31 MAGV 9.4
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
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IRAS 12222-4652, CD -46 7908, HD 108015
12 24 53.5 -47 09 08
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
Boomerang Nebula, IRAS 12419-5414, Centaurus Bipolar Nebula, HBC 592
12 44 46.0 -54 31 18 SIZE 55”x21”
SIMBAD has it as an Emission Object.
Not in the SECGPN.
In the CGPN2, table 5.
Discovered by Gary Wegner in 1977
See APOD, February 20, 2003 for a nice image.
The name “Boomerang Nebula”, was given by K. N. R. Taylor and S. M. Scarrott in their paper “The Boomerang Nebula: A highly polarized bipolar”, 1980 MNRAS…193..321.
This polarized bipolar reflection nebula is the coldest place ever measured in the universe at around 0.3 K, which is even below the 3.0 K background temperature of the universe. Evidently expanding gas along the long axis of this object cools it (Astronomy, October 1997, pages 22 & 24).
I was able to observe the Boomerang Nebula on January 17th, 2004 using a 20” f/5 reflector near Wongan Hills, Western Australia. At 169X and 254X it appeared as an extended nebular object, roughly in the N-S direction.
IRAS 12538-2611, HD 112374, LN Hya
12 56 30.1 -26 27 37 MAGV 6.7
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 13416-6243
13 45 08.1 -62 58 21
SIMBAD had it as a Possible Planetary Nebula.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 13428 -6232, GLMP 363, PM 2-14
13 46 21.1 -62 48 00
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 14331-6435, GLMP 385, He 3-1013
14 37 10.1 -64 48 05 MAGV 11.1
SIMBAD has this as a Possible Planetary Nebula.
Not in the SECGPN.
In the CGPN2, table 5.
Note that the CGPN2 has this object listed as He 3-1031, which is a typo and should be He 3-1013.
IRAS 16206-5956, CPD -59 6723, SAO 243756, LSE 252, LS 3591
16 25 02.6 -60 03 32 MAGV 9.9
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
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IRAS 16279-4757, PM 2-18
16 31 38.1 -48 04 04
SIMBAD has it as a Possible Planetary Nebula.
Not in the SECGPN.
In the CGPN2, table 5.
Water-Fountain Nebula, IRAS 163422-3814, OH 344.1+5.8, GLMP 480
16 37 40.1 -38 20 17 MAGV 15.7
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See 1999ApJ…514..115, “The “Water-Fountain Nebula” IRAS 16342-3814: Hubble Space Telescope/ Very Large Array Study of a Bipolar ProtoPlanetary Nebula” by R. Sahai etal for a good image of this object.
IRAS 16559-2957, GLMP 500
16 59 08.1 -30 01 40 MAGV =13.2
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
Water Lily Nebula, IRAS 16594-4656, GLMP 507
17 03 09.7 -47 00 28 MAGV ? SIZE 12.3”x8.8”
SIMBAD has it as a Planetary Nebula
Not in the SECGPN.
Not in the CGPN2
Nice picture of it on page 112 of Sun Kwok's Cosmic Butterflies book.
The name “Water Lily Nebula” was due to its morphology resembling a flower, see ApJ…524..849, “The Discovery of Two New Bipolar Proto-Planetary Nebulae: IRAS 16594-4656 and IRAS 17425-3951” by Bruce J. Hrivnak, Sun Kwok and Kate Y. L. Su, page 851.
Spindle Nebula, IRAS 17106-3046, GLMP531, PM 2-23
17 13 51.7 -30 49 40 MAGV 15.8 SIZE 7.7”x6.6”
SIMBAD has it as a Star of Suspected Variability.
Not in the SECGPN.
In the CGPN2, table 5.
There is a nice image of this object on page 113 of Sun Kwok's Cosmic Butterflies book.
Cotton Candy Nebula, IRAS 17150-3224, CRL 6815, GLMP 540
17 18 20.0 -32 27 20 MAGV 14.5 SIZE 16”x9”
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
There is a nice image of this object at http://www.iras.ucalgary.ca/~kwok/candy2.jpg
I was able to observe this object on July 8th, 2004 from Navaho Flats using a 20” f/5 reflector. At 254X it looked slightly fuzzy and elongated. There was no response to the O-III, UHC or H-Beta filters as expected. Found it by using an AP red plate finder chart.
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Walnut Nebula, IRAS 17245-3951, GLMP 565, PM 2-27, OH 348.81-2.84
17 28 04.8 -39 53 44 MAGV ? SIZE 4.8”x3.9
SIMBAD has it as a Star with OH/IR Envelope.
In the SECGPN as a possible PN.
In the CGPN2, table 5.
There is a nice picture of this object on page 112 of Sun Kwok's Cosmic Butterflies book.
This nebula was named the “Walnut Nebula” based on its general appearance, see 1999ApJ…524..849, “The Discovery of Two New Bipolar Proto-Planetary Nebulae: IRAS 16594-4656 and IRAS 17245-3951” by Bruce J. Hrivnak, Sun Kwok and Kate Y. L. Su, page 851.
IRAS 17311-4924, GLMP 581, He 3-1428
17 35 02.5 -49 26 26 MAGV 10.7
SIMBAD has it as a Possible Planetary Nebula.
Not in the SECGPN.
In the CGPN2, table 5.
This is a carbon rich, hot PPN.
IRAS 17436+5003, HD 161796, BD +50 2457, SAO 30548, V814 Her, RAFGL 5384
17 44 55.5 +50 02 39
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
Garden-sprinkler Nebula, IRAS 17423-1755, He 3-1475, GLMP 623
17 45 14.2 -17 56 47 MAGV 12.9
SIMBAD has it as a Post-AGB Star
Not in the SECGPN but is in Supplement 1 to the SECGPN as PN G 009.3+05.7
In the CGPN2, table 2 as a possible PN, PK 009+05.1
There is a nice image of this object at http://ad.usno.navy.mil/pne/images/h3_1475.gif which shows two elongated curved arms coming out of a bright center, giving it a garden sprinkler look.
Silkworm Nebula, IRAS 17441-2411, CRL 5385, GLMP 640
17 47 10.3 -24 12 54 MAGV 15.6 SIZE 11”x7”
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See http://www.iras.ucalgary.ca/~kwok/silkworm.jpg for an image of this object.
The origin of this name is from 1998ApJ…508..744, “Hubble Space Telescope Imaging of IRAS 17441-2411: A Case Study of a Bipolar Nebula With a Circumstellar Disk”, by Kate Y. L. Su, Kevin Volk, Sun Kwok and Bruce Hrivnak, page 746. In this paper, they state:“We name IRAS 17441-2411 the “Silkworm Nebula”, not only for its appearance but also for the scientific Connotation that the two lobes are breaking out of the ABG envelope as butterflies emerging from cocoons during their metamorphosis.”
IRAS 17534+2603, HD 163506, BD +26 3120, V441 Her, 89 Her, RAFGL 2028
17 55 25.2 +26 03 00 MAGV 5.5
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 18025-3906, GLMP 713, PM 2-34
18 06 03.1 -39 05 56
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
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Gomez's Hamburger, IRAS 18059-3211
18 09 13.3 -32 10 48 MAGV 14.4 SIZE 5.5”x3.5”
SIMBAD has it as a possible PN.
Not in the SECGPN
Not in the CGPN2
Discovered in May 1985 by Arturo Gomez.
See APOD, August 7, 2002 for a nice image.
At http://heritage.stsci.edu/2002/19/article.html is a good article by Barbara Wilson about observing Gomez's Hamburger.
I was able to observe this object on August 6th, 2002 from Mt. Pinos using a 20” f/5 reflector. At 250X it was very faint, stellar, requiring the O-III filter and averted vision. Found using an AP finderchart.
IRAS 18071-1727, OH 12.8+.9
18 10 05.4 -17 26 56
SIMBAD has it as a Molecular Cloud.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 18095+2704, V887 Her, GLMP 735, OH 53.8+20.2
18 11 30.7 +27 05 16 MAGV 10.4
SIMBAD has it as a Post-AGB Star.
In the SECGPN has it as a possible PN
In the CGPN2, table 5.
There is an image of this object on page 107 of Sun Kwok's Cosmic Butterflies book. Also see pages 33 and 34 of Sun Kwok's “Stellar Metamorphosis” article in Sky and Telescope, October 1998.
A good article is 1988ApJ…331..832, “The High-Latitude F Supergiant IRAS 18095+2704: A Proto-Planetary Nebula”, by Bruce Hrivnak, Sun Kwok and Kevin M. Volk.
IRAS 18135-1456, RAFGL 5458, OH 15.7+.8
18 16 25,4 -14 55 05
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 18276-1431, OH/IR 17.7-2.0, RAFGL 5497, V445 Sct
18 30 30.6 -14 28 46
SIMBAD has it as a Simi-regular Pulsating Star.
In the SECGPN as a possible planetary nebula.
In the CGPN2, table 5.
IRAS 18384-2800, HD 172481, CD -28 14878, V4728 Sgr
18 41 37.0 -27 57 01 MAGV 9.1
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 18596+0315, OH 37.1-0.8, PM 1-275
19 02 06.3 +03 20 16
SIMBAD has it as a Star with envelope of OH/IR Type.
Not in the SECGPN.
In the CGPN2, table 5.
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IRAS 19067+0811, OH 42.3-.1, V1368 Aql
19 09 08.5 +08 16 48
SIMBAD has it as a Variable Star of Mira Cet Type.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 19114+2002, RAFGL 2343, HD 179821, V1427 Aql, SAO 124414
19 13 58.6 +00 07 32
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See http://homepage.oma.be/ueta/research/conf/ass193/hstsnapshot.html for a Hubble image of this object.
IRAS 19 134+2131, VSP 2-31
19 15 35.4 +21 36 33
SIMBAD has it as a Planetary Nebula
Not in the SECGPN.
In the CGPN2, table 5.
This PPN has water maser emission.
IRAS 19296+2227, CGCS 4324
19 31 45.9 +22 33 43
SIMBAD has it as a Maser.
Not in the SECGPN.
In the CGPN2, table 5.
Minkowski's Footprint, IRAS 19434+2926, M 1-92, Footprint Nebula
19 36 18.8 +29 32 51 MAGV 11.7 SIZE 3”x 8”
SIMBAD has it as an Emission-line Star.
Not in the SECGPN
In the CGPN2, table 5.
In 1946PASP…58..309, Minkowski describes this object as a “Binuclear nebula without central star. The north preceding mass has a diameter of about 3” and is separated from the south following fainter mass by a dark lane”.
This is an oxygen rich PPN with a central star at 20,000 K.
See http://www.blacksies.com/images/hst_images/M1_92_hst.jpg for a nice image.
Also there are good images in 1996ApJ…486..107.
I was able to observe this object on June 19th, 2001 from Navaho Flats using an 8” f/10 SCT. At 100X and 200X, it was stellar, requiring averted vision. No response to the O-III, UHC or H-Beta filters. Can only see the bright 4”x3” sole of the footprint, can not see the fainter heel. This object is just east of a 10th magnitude star.
IRAS 19374+2359
19 39 35.4 +24 06 25 SIZE 2.6”
SIMBAD has it as a Peculiar Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 19386+0155, V1648 Aql, NVS 24846
19 41 08.3 +02 02 31
SIMBAD has it as a Variable Star.
Not in the SECGPN
In the CGPN2, table 5
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IRAS 19475+3119, HD 331319, PM 2-43, GLMP 951
19 49 29.6 +31 27 16 MAGV 9.5
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
Cloverleaf Nebula, IRAS 19477+2401, GLMP 952
19 49 54.5 +24 08 51
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
See 2001AJ…122..152 for name.
IRAS 19500-1709, RAFGL 5568, GLMP 954, HD 187885, V5112 Sgr
19 52 52.7 -17 01 50 MAGV 8.7
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 20000+3239, GLMP 963, CGCS 6857
20 01 59.5 +32 47 32
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 20028+3910, GLMP 968, PM 2-43
20 04 35.0 +39 18 38 MAGV 17.8
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
This is a bipolar PPN.
Egg Nebula, CRL 2688, V1610 Cyg, Pk 080-06.1 (unauthorized)
21 02 18.7 +36 41 38 MAGV 12.0 SIZE 24”x6”
SIMBAD has it as a Post-AGB Star
In the SECGPN as a possible PN.
In the CGPN2, Table 5.
Discovered by Tom Murdock in 1974.
Named the Egg Nebula by Mike Merrill in 1974 (see Sky & telescope, January 1975, page 21).
See APOD, January 29, 1996 and April 9, 2003 for nice images.
According to Sun Kwok (S&T, October 1998, page 36) if the Egg Nebula was turned 10 or 20 degrees, the nebula would be unobservable and the central star would be a naked eye object.
This is a carbon rich polarized PPN.
I was able to observe this object on June 19th, 2001 from Navaho Flats using an 8” f/10 SCT. At 62.5x it looks like a faint star. No response to the O-III, UHC or H-Beta filters. At 100X it looks like a faint close double star. At 200X, the two components are aligned roughly north - south with the larger component being on the north side.
Page 11
IRAS 22036+5306, GLMP 1052
22 05 30.3 +53 21 33 MAGV 16.4 SIZE 5.7”x1.3
SIMBAD has it as a Star With Envelope of OH/IR Type. Also under identifiers has the comment “PPN”.
Not in the SECGPN.
In the CGPN2, table 5
See 2003ApJ…586..81, “An Icy, Bipolar Proto-Planetary Nebula with Knotty Jets: IRAS 22036+5306” by R. Sahai et al, page 82 for a Hubble image of this object.
The Hubble image of this object show an elongated nebula with blunt pointed ends and a curved dark band around the middle, almost like cigar with band label around it.
IRAS 22223+4327, GLMP 1058, TYC 3212-676-1
22 24 30.7 +43 43 04 MAGV 9.7
SIMBAD has it as a Pulsating Variable Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 22272+54 35, HD 235858, GLMP 1059, V354 Lac, BD +54 2787
22 29 10.4 +54 51 06 MAGV 8.9
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN
In the CGPN2, table 5.
This is a carbon rich PPN. See 2003RmxAC…15..17, “Multipolar Bubbles, Point-symmetry, and Jets in Dying Stars” by R. Sahal and M. R. Morris, for an image of this object.
IRAS 22574+6609
22 59 18.4 +66 25 48
SIMBAD has it as a Peculiar Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 23304+6147, GLMP 1078, PM 2-47
23 32 45.0 +62 03 49
SIMBAD has it as a Post-AGB Star.
Not in the SECGPN.
In the CGPN2, table 5.
IRAS 23321+6545, PM 2-48, CGCS 6919
23 34 22.7 +66 01 50
SIMBAD has it as a Carbon Star.
Not in the SECGPN.
In the CGPN2, table 5.
M 2-56, IRAS 23541+7031, PK 118+08.1, ARO 386, CRL 3181
23 56 36.6 +70 48 16
SIMBAD has it as a Possible Planetary Nebula.
The SECGPN has it as a possible PN.
In the CGPN2 as a possible PN.
This is a compact bipolar nebula that is currently undergoing the transition from AGB star to PN. Shock emission dominates the optical line spectrum of the bipolar lobes.
Revision 0 created by Kent Wallace on September 03 2004.
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