Class information for:
Level 1: PLANETARY NEBULAE GENERAL//PLANETARY NEBULAE//STARS AGB AND POST AGB

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
470 3399 39.1 62%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
19 3       ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 118981
159 2             WHITE DWARFS//NOVAE CATACLYSMIC VARIABLES//STARS AGB AND POST AGB 22817
470 1                   PLANETARY NEBULAE GENERAL//PLANETARY NEBULAE//STARS AGB AND POST AGB 3399

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 PLANETARY NEBULAE GENERAL authKW 5907002 27% 73% 906
2 PLANETARY NEBULAE authKW 714491 4% 66% 120
3 STARS AGB AND POST AGB authKW 586937 12% 16% 421
4 ISM PLANETARY NEBULAE GENERAL authKW 530852 2% 73% 81
5 ISM ABUNDANCES authKW 291919 9% 11% 302
6 NEBULAE PLANETARY authKW 210509 1% 76% 31
7 PLANETARY NEBULAE INDIVIDUAL NGC 7293 authKW 202382 1% 87% 26
8 ASTRONOMY & ASTROPHYSICS WoSSC 200869 99% 1% 3363
9 STARS MASS LOSS authKW 196184 8% 8% 264
10 PLANETARY NEBULAE INDIVIDUAL NGC 7027 authKW 187065 1% 77% 27

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Astronomy & Astrophysics 200869 99% 1% 3363
2 History & Philosophy of Science -2 0% 0% 1
3 Multidisciplinary Sciences -4 0% 0% 3
4 Engineering, Aerospace -6 0% 0% 1
5 Computer Science, Software Engineering -11 0% 0% 4
6 Physics, Fluids & Plasmas -16 0% 0% 2
7 Geochemistry & Geophysics -20 0% 0% 3
8 Spectroscopy -23 0% 0% 1
9 Physics, Mathematical -24 0% 0% 1
10 Meteorology & Atmospheric Sciences -24 0% 0% 1

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 SCI EDUC ASTRON 69086 0% 77% 10
2 ASTRON 69073 21% 1% 697
3 POSTBUS 800 51960 0% 64% 9
4 LEHRSTUHL ASTROPHYS 39040 0% 43% 10
5 URA 173 ASTROPHYS EXTRAGALACT COSMOL 26945 0% 100% 3
6 ANAL NUMER ASTROFIS 25860 0% 26% 11
7 DIPARTIMENTO ASTRON SCI SPAZIO 25279 1% 9% 33
8 ASTRON ASTROPHYS ASTROPHOTON 24177 0% 17% 16
9 ASTROFIS ANDALUCIA 23014 2% 3% 78
10 ASTRON SOLAR PHYS 21832 1% 6% 40

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ASTRONOMY & ASTROPHYSICS 109114 23% 2% 783
2 REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA 101051 4% 9% 119
3 ASTROPHYSICAL JOURNAL 72194 23% 1% 796
4 IAU SYMPOSIA 64300 7% 3% 238
5 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 64287 17% 1% 562
6 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 32867 4% 3% 139
7 ASTRONOMICAL JOURNAL 20400 5% 1% 181
8 ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 19823 3% 2% 90
9 ASTROPHYSICS AND SPACE SCIENCE 13316 4% 1% 138
10 ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 9866 2% 2% 72

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 PLANETARY NEBULAE GENERAL 5907002 27% 73% 906 Search PLANETARY+NEBULAE+GENERAL Search PLANETARY+NEBULAE+GENERAL
2 PLANETARY NEBULAE 714491 4% 66% 120 Search PLANETARY+NEBULAE Search PLANETARY+NEBULAE
3 STARS AGB AND POST AGB 586937 12% 16% 421 Search STARS+AGB+AND+POST+AGB Search STARS+AGB+AND+POST+AGB
4 ISM PLANETARY NEBULAE GENERAL 530852 2% 73% 81 Search ISM+PLANETARY+NEBULAE+GENERAL Search ISM+PLANETARY+NEBULAE+GENERAL
5 ISM ABUNDANCES 291919 9% 11% 302 Search ISM+ABUNDANCES Search ISM+ABUNDANCES
6 NEBULAE PLANETARY 210509 1% 76% 31 Search NEBULAE+PLANETARY Search NEBULAE+PLANETARY
7 PLANETARY NEBULAE INDIVIDUAL NGC 7293 202382 1% 87% 26 Search PLANETARY+NEBULAE+INDIVIDUAL+NGC+7293 Search PLANETARY+NEBULAE+INDIVIDUAL+NGC+7293
8 STARS MASS LOSS 196184 8% 8% 264 Search STARS+MASS+LOSS Search STARS+MASS+LOSS
9 PLANETARY NEBULAE INDIVIDUAL NGC 7027 187065 1% 77% 27 Search PLANETARY+NEBULAE+INDIVIDUAL+NGC+7027 Search PLANETARY+NEBULAE+INDIVIDUAL+NGC+7027
10 PLANETARY NEBULAE INDIVIDUAL NGC 7009 143708 0% 100% 16 Search PLANETARY+NEBULAE+INDIVIDUAL+NGC+7009 Search PLANETARY+NEBULAE+INDIVIDUAL+NGC+7009

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 PARKER, QA , BOJICIC, IS , FREW, DJ , (2016) THE HA SURFACE BRIGHTNESS-RADIUS RELATION: A ROBUST STATISTICAL DISTANCE INDICATOR FOR PLANETARY NEBULAE.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 455. ISSUE 2. P. 1459 -1488 287 72% 10
2 FREW, DJ , BOJICIC, IS , PARKER, QA , (2013) A CATALOGUE OF INTEGRATED H ALPHA FLUXES FOR 1258 GALACTIC PLANETARY NEBULAE.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 431. ISSUE 1. P. 2 -26 227 83% 8
3 STERLING, NC , DINERSTEIN, HL , (2008) THE ABUNDANCES OF LIGHT NEUTRON-CAPTURE ELEMENTS IN PLANETARY NEBULAE. II. S-PROCESS ENRICHMENTS AND INTERPRETATION.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. VOL. 174. ISSUE 1. P. 158 -201 195 76% 41
4 AKRAS, S , GONCALVES, DR , (2016) LOW-IONIZATION STRUCTURES IN PLANETARY NEBULAE - I. PHYSICAL, KINEMATIC AND EXCITATION PROPERTIES.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 455. ISSUE 1. P. 930 -961 81 98% 3
5 DE MARCO, O , (2009) THE ORIGIN AND SHAPING OF PLANETARY NEBULAE: PUTTING THE BINARY HYPOTHESIS TO THE TEST.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC. VOL. 121. ISSUE 878. P. 316 -342 125 65% 137
6 BALICK, B , FRANK, A , (2002) SHAPES AND SHAPING OF PLANETARY NEBULAE.ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS. VOL. 40. ISSUE . P. 439 -486 131 65% 337
7 ALI, A , SABIN, L , SNAID, S , BASURAH, HM , (2012) INTERACTING PLANETARY NEBULAE I. CLASSIFICATION AND ORIENTATION.ASTRONOMY & ASTROPHYSICS. VOL. 541. ISSUE . P. - 86 95% 8
8 FREW, DJ , PARKER, QA , (2010) PLANETARY NEBULAE: OBSERVATIONAL PROPERTIES, MIMICS AND DIAGNOSTICS.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA. VOL. 27. ISSUE 2. P. 129 -148 123 56% 69
9 SABBADIN, F , TURATTO, M , CAPPELLARO, E , BENETTI, S , RAGAZZONI, R , (2004) THE 3-D IONIZATION STRUCTURE AND EVOLUTION OF NGC 7009 (SATURN NEBULA).ASTRONOMY & ASTROPHYSICS. VOL. 416. ISSUE 3. P. 955-981 98 95% 24
10 KWITTER, KB , MENDEZ, RH , PENA, M , STANGHELLINI, L , CORRADI, RLM , DE MARCO, O , FANG, X , HENRY, RBC , KARAKAS, AI , LIU, XW , ET AL (2014) THE PRESENT AND FUTURE OF PLANETARY NEBULA RESEARCH. A WHITE PAPER BY THE IAU PLANETARY NEBULA WORKING GROUP.REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA. VOL. 50. ISSUE 2. P. 203 -223 123 53% 7

Classes with closest relation at Level 1


Rank Class id link
1 8992 STARS AGB AND POST AGB//STARS INDIVIDUAL V4334 SGR//STARS INDIVIDUAL HD 56126
2 498 STARS AGB AND POST AGB//STARS CARBON//RADIO LINES STARS
3 9542 BINARIES SYMBIOTIC//STARS BINARIES SYMBIOTIC//SYMBIOTIC STARS
4 21451 ISM BUBBLES//STARS INDIVIDUAL HD 56925//STARS WOLF RAYET
5 6429 ISM INDIVIDUAL ORION NEBULA//ISM INDIVIDUAL OBJECTS ORION NEBULA//H II REGIONS
6 1961 WHITE DWARFS//STARS WHITE DWARFS//STARS EVOLUTION
7 11780 SUBDWARFS//STARS SUBDWARFS//STARS HOT SUBDWARFS
8 903 GALAXIES IRREGULAR//GALAXIES DWARF//GALAXIES ABUNDANCES
9 11090 STARS INDIVIDUAL ETA CARINAE//STARS INDIVIDUAL ETA CAR//STARS INDIVIDUAL P CYGNI
10 19511 STARS FORMATION EVOLUTION//GALAXY EVOLUTION//GALAXY ABUNDANCES

Go to start page