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V604 Aquilae

V604 Aquilae or Nova Aquilae 1905

A light curve for V604 Aquilae, plotted from data published by Walker (1933)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 02m 06.33s[2]
Declination −04° 26′ 43.2″[2]
Apparent magnitude (V) 7.6(blue) – 19.6(V)[3]
Astrometry
Absolute magnitude (MV)-8.3[4]
Characteristics
Spectral type pec(Nova)[3]
B−V color index 0.3[5]
Variable type NA[3]
Other designations
Nova Aquilae 1905, CSI-04-18594, SV* HV 1175, AAVSO 1856-04, AN 104.1905, HD 176779.
Database references
SIMBADdata
The location of V604 Aquilae (circled in red)

V604 Aquilae or Nova Aquilae 1905 is a nova which was first observed in the constellation Aquila in 1905 with a maximum brightness of magnitude 7.6.[3] It was never bright enough to be seen with the naked eye. It was discovered by Williamina Fleming on a Harvard College Observatory photographic plate taken on August 31, 1905.[6] Examination of plates taken earlier indicates that peak brightness occurred in mid-August 1905.[7] The star's quiescent visual band brightness is 19.6.[5]

V604 Aquilae faded by 3 magnitudes in just 25 days, making it a "fast nova".[6] Detection of a faint nebula surrounding the star, with a radius of 0.4 arc minutes, was reported early in 1906.[8] In 1994, a photometric study detected brightness variations of up to ~0.45 magnitudes on timescales of about one hour.[9] An attempt to detect cool molecular gas surrounding the nova in 2015 was unsuccessful.[10]

References

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  1. ^ Walker, Arville D. (1933). "The photographic light curves of thirteen novae". Annals of the Astronomical Observatory of Harvard College. 84 (7): 764. arXiv:astro-ph/0102302. Bibcode:2001PASP..113..764D. doi:10.1086/320802. S2CID 16285959. Retrieved 27 October 2022.
  2. ^ a b Downes, Ronald A.; Webbink, Ronald F.; Shara, Michael M.; Ritter, Hans; Kolb, Ulrich; Duerbeck, Hilmar W. (June 2001). "A Catalog and Atlas of Cataclysmic Variables: The Living Edition". The Publications of the Astronomical Society of the Pacific. 113 (784): 764–768. arXiv:astro-ph/0102302. Bibcode:2001PASP..113..764D. doi:10.1086/320802. S2CID 16285959. Retrieved 27 October 2022.
  3. ^ a b c d "V0604 Aql". The International Variable Star Index. AAVSO. Retrieved 27 October 2022.
  4. ^ Harrison, T. E. (February 1991). "IRAS Observations of Classical Novae. II. Modeling the Detections". Astronomical Journal. 101: 587. Bibcode:1991AJ....101..587H. doi:10.1086/115708. Retrieved 28 October 2022.
  5. ^ a b Szkody, Paula (August 1994). "BVRGK Observations of Northern Hemisphere Old Novae". Astronomical Journal. 108: 639. Bibcode:1994AJ....108..639S. doi:10.1086/117098. Retrieved 28 October 2022.
  6. ^ a b Duerbeck, Hilmar W. (March 1987). "A Reference Catalogue and Atlas of Galactic Novae". Space Science Reviews. 45 (1–2): 1–14. Bibcode:1987SSRv...45....1D. doi:10.1007/BF00187826. S2CID 115854775. Retrieved 27 October 2022.
  7. ^ Tappert, C.; Vogt, N.; Della Valle, M.; Schmidtobreick, L.; Ederoclite, A. (July 2014). "Life after eruption - IV. Spectroscopy of 13 old novae". Monthly Notices of the Royal Astronomical Society. 442 (1): 565–576. arXiv:1405.3635. Bibcode:2004IBVS.5550....1H. doi:10.1093/mnras/stu781. Retrieved 28 October 2022.
  8. ^ Pickering, Edward C. (January 1906). "Nova 104.1905 Aquilae". Astronomische Nachrichten. 170 (9): 147. Bibcode:1906AN....170..147P. doi:10.1002/asna.19051700913. Retrieved 27 October 2022.
  9. ^ Haefner, R. (August 2004). "CCD Photometry of Five Faint Cataclysmic Variables". Information Bulletin on Variable Stars. 5550: 1. Bibcode:2004IBVS.5550....1H. Retrieved 28 October 2022.
  10. ^ Kamiński, Tomek; Mazurek, Helena J.; Menten, Karl M.; Tylenda, Romuald (March 2022). "A search for cool molecular gas in GK Persei and other classical novae". Astronomy and Astrophysics. 659: A109. arXiv:2201.10332. Bibcode:2022A&A...659A.109K. doi:10.1051/0004-6361/202142737. Retrieved 28 October 2022.
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