Alfa Antliae

	Alfa Antliae
Observationsdata; Epok: J2000.0
Stjärnbild	Luftpumpen
Rektascension	10t 27m 09,10313s
Deklination	-31° 04′ 03,98″
Skenbar magnitud ()	5,22-5,29 (V)
Stjärntyp
Spektraltyp	K3III
U–B	1,63
B–V	1,429±0,048
R–I	0,79
Variabeltyp	Misstänkt variabel stjärna
Astrometri
Radialhastighet ()	12,2 ± 2 km/s
Egenrörelse (µ)	RA: -83,335 ± 0,492 mas/år; Dek.: 8,269 ± 0,475 mas/år
Parallax ()	10,0734 ± 0,3348
Avstånd	320 ± 10 lå (99 ± 3 pc)
Absolut magnitud ()	-0,97
Detaljer
Massa	2,2 M☉
Radie	41 R☉
Luminositet	412 L☉
Temperatur	4 070 K
Metallicitet	-0,39
Andra beteckningar
	GSC 07184-02065, 2MASS J10270911-3104039, SKY# 20072, CD-30 8465, HD 90610, N30 2482, SRS 30392, CPC 17 5084, HIC 51172, NSV 4862, TYC 7184-2065-1, CPD-30 3121, HIP 51172, PLX 2452, UBV 9659, FK5 392, HR 4104, PLX 2452.00, UBV M 16238, GC 14352, IRAS 10248-3048, PMC 90-93 283, WEB 9355, GCRV 6563, IRC -30164, PPM 287713, YZ 120 6900, GEN# +1.00090610, JP11 1951, SAO 201405, Gaia DR2 5449188358926934016

Alfa Antliae är den ljusstarkaste stjärnan i stjärnbilden Luftpumpen. Alfa Antliae har en visuell magnitud som varierar mellan +4,22 och 4,29. Ljusvariationerna rapporterades först av den amerikanske astronomen Benjamin Gould 1879, men har inte bekräftats i modern tid. Stjärnan ligger på ungefär 320 ljusårs avstånd.

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, tidigare version.

Noter

^ [a b c d e f g] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ [a b c] ”Basic data: V* alf Ant – High proper-motion Star” (på engelska). Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=alf+Ant&submit=SIMBAD+search. Läst 2 mars 2019.
^ [a b] 43486 ”NSV 4862” (på engelska). The International Variable Star Index. AAVSO – American Association of Variable Star Observers. https://www.aavso.org/vsx/index.php?view=detail.top&oid= 43486. Läst 2 mars 2019.
^ [a b] Hoffleit, D.; Warren, Jr., W. H. "HR 4104". The Bright Star Catalogue (5th revised ed.). Centre de Données astronomiques de Strasbourg. Hämtad 2008-10-03.
^ van Leeuwen (2007). ”Hipparcos, the New Reduction” (på engelska). http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&HIP=51172. Läst 2 mars 2019.
^ Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick. Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. Bibcode:1967IAUS...30...57E.
^ Cardini, D. (January 2005), "Mg II chromospheric radiative loss rates in cool active and quiet stars", Astronomy and Astrophysics, 430: 303–311, arXiv:astro-ph/0409683, Bibcode:2005A&A...430..303C, doi:10.1051/0004-6361:20041440.
^ Alpha Antliae, Stars, Jim Kaler. Upptagen on line 3 oktober 2008.
^ McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". Astrophysical Journal Supplement Series. 74: 1075–1128. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527.

[A-1] [a b c d e f g] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[SIMBAD-2] [a b c] ”Basic data: V* alf Ant – High proper-motion Star” (på engelska). Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=alf+Ant&submit=SIMBAD+search. Läst 2 mars 2019.

[magnitud-3] [a b] 43486 ”NSV 4862” (på engelska). The International Variable Star Index. AAVSO – American Association of Variable Star Observers. https://www.aavso.org/vsx/index.php?view=detail.top&oid= 43486. Läst 2 mars 2019.

[B-4] [a b] Hoffleit, D.; Warren, Jr., W. H. "HR 4104". The Bright Star Catalogue (5th revised ed.). Centre de Données astronomiques de Strasbourg. Hämtad 2008-10-03.

[hip2-5] van Leeuwen (2007). ”Hipparcos, the New Reduction” (på engelska). http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&HIP=51172. Läst 2 mars 2019.

[C-6] Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick. Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. Bibcode:1967IAUS...30...57E.

[D-7] Cardini, D. (January 2005), "Mg II chromospheric radiative loss rates in cool active and quiet stars", Astronomy and Astrophysics, 430: 303–311, arXiv:astro-ph/0409683, Bibcode:2005A&A...430..303C, doi:10.1051/0004-6361:20041440.

[E-8] Alpha Antliae, Stars, Jim Kaler. Upptagen on line 3 oktober 2008.

[F-9] McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". Astrophysical Journal Supplement Series. 74: 1075–1128. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

Observationsdata Epok: J2000.0
Alfa Antliae

Stjärnbild	Luftpumpen
Rektascension	10^t 27^m 09,10313^s^[1]
Deklination	-31° 04′ 03,98″^[2]
Skenbar magnitud ( $V$ )	5,22-5,29 (V)^[3]
Stjärntyp
Spektraltyp	K3III^[2]
U–B	1,63^[4]
B–V	1,429±0,048^[5]
R–I	0,79^[4]
Variabeltyp	Misstänkt variabel stjärna^[3]
Astrometri
Radialhastighet ( $R_{v}$ )	12,2 ± 2^[6] km/s
Egenrörelse (µ)	RA: -83,335 ± 0,492^[1] mas/år Dek.: 8,269 ± 0,475^[1] mas/år
Parallax ( $\pi$ )	10,0734 ± 0,3348^[1]
Avstånd	320 ± 10 lå (99 ± 3 pc)
Absolut magnitud ( $M_{V}$ )	-0,97^[7]
Detaljer
Massa	2,2^[8] M_☉
Radie	41^[1] R_☉
Luminositet	412^[1] L_☉
Temperatur	4 070^[1] K
Metallicitet	-0,39^[9]
Andra beteckningar
GSC 07184-02065, 2MASS J10270911-3104039, SKY# 20072, CD-30 8465, HD 90610, N30 2482, SRS 30392, CPC 17 5084, HIC 51172, NSV 4862, TYC 7184-2065-1, CPD-30 3121, HIP 51172, PLX 2452, UBV 9659, FK5 392, HR 4104, PLX 2452.00, UBV M 16238, GC 14352, IRAS 10248-3048, PMC 90-93 283, WEB 9355, GCRV 6563, IRC -30164, PPM 287713, YZ 120 6900, GEN# +1.00090610, JP11 1951, SAO 201405, Gaia DR2 5449188358926934016^[2]