2021
DOI: 10.48550/arxiv.2109.07329
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First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances

László Molnár,
Attila Bódi,
András Pál
et al.

Abstract: The TESS space telescope is collecting continuous, high-precision optical photometry of stars throughout the sky, including thousands of RR Lyrae stars. In this paper, we present results for an initial sample of 118 nearby RR Lyrae stars observed in TESS Sectors 1 and 2. We use differentialimage photometry to generate light curves and analyse their mode content and modulation properties. We combine accurate light curve parameters from TESS with parallax and color information from the

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Cited by 4 publications
(4 citation statements)
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References 129 publications
(200 reference statements)
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“…Color-magnitude diagrams of globular clusters M3 and NGC 6362 suggest that RR 0.61 tend to avoid the hottest (bluest) part of the diagrams (Jurcsik et al 2015;Smolec et al 2017b). Similar trend was noted for the TESS RR 0.61 stars (Molnár et al 2021). Thus, observations indicate that RR 0.61 phenomenon, while widespread, is not ubiquitous.…”
Section: The Incidence Rates Of Rr 061 Starssupporting
confidence: 63%
See 1 more Smart Citation
“…Color-magnitude diagrams of globular clusters M3 and NGC 6362 suggest that RR 0.61 tend to avoid the hottest (bluest) part of the diagrams (Jurcsik et al 2015;Smolec et al 2017b). Similar trend was noted for the TESS RR 0.61 stars (Molnár et al 2021). Thus, observations indicate that RR 0.61 phenomenon, while widespread, is not ubiquitous.…”
Section: The Incidence Rates Of Rr 061 Starssupporting
confidence: 63%
“…Molnár et al (2015) analyzed test K2 data for RR Lyrae stars in a field in Pisces and obtained incidence rate of RR 0.61 stars of 75 per cent. First results on the RR Lyrae stars observed in the TESS mission provided incidence rate of 65 per cent (Molnár et al 2021). General conclusion that can be drawn from these results is that the better the quality of the photometry, the higher the incidence rate.…”
Section: The Incidence Rates Of Rr 061 Starsmentioning
confidence: 95%
“…The error bars on the colors are large, and the main source of the error is the reddening, and dust map inaccuracies. For stars with apparent magnitudes above 13-14 mag Molnár et al (2021) the CMD is reliable in distinguishing between fundamental mode and overtone pulsation within one type of pulsating stars, but it is not too good for determining variable star classes (RRL vs ACEP vs DCEP vs T2C).…”
Section: Color-magnitude Diagram From Gaia Datamentioning
confidence: 99%
“…Up to now, the best applications in RR Lyrae stars study have relied dominantly on classical ground-based data sets (Alcock et al (2003) and Soszyński et al (2019)), improved progressively by use of space telescopes such as CoRoT (Auvergne et al (2009) and Chadid ( 2012)), Kepler (Gilliland et al (2010), Benkő et al (2014) and Molnár et al (2015) ) and TESS (Molnár et al (2021)), and accomplished by implementing a new way, Antarctica polar observations with PAIX long uninterrupted and continuous precision observations over 150 days from the ground, 1 polar night, and without the regular interruptions imposed by the earth rotation (Chadid & Vernin (2019) and Chadid et al (2014)).…”
Section: Introductionmentioning
confidence: 99%